CN104923431A - Spraying robot driven by multiple parallelogram links in parallel - Google Patents
Spraying robot driven by multiple parallelogram links in parallel Download PDFInfo
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- CN104923431A CN104923431A CN201410098381.1A CN201410098381A CN104923431A CN 104923431 A CN104923431 A CN 104923431A CN 201410098381 A CN201410098381 A CN 201410098381A CN 104923431 A CN104923431 A CN 104923431A
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Abstract
The invention provides a spraying robot driven by multiple parallelogram links in parallel. The spraying robot comprises a pedestal (3), a big-arm driving motor (4), a small-arm driving motor (10), a pitch adjusting motor (8), a movable platform (18) and three paralleled parallelogram link mechanisms. The spraying robot is characterized in that the big-arm driving motor (4), the small-arm driving motor (10), and the pitch adjusting motor (8) are all arranged on one end of the pedestal (3), and the three paralleled parallelogram link mechanisms cooperate with one another to drive the movable platform (18). According to the invention, a three-parallelogram-link driving manner is employed, when the three parallelogram link mechanisms are designed, the maximum pressure angle is limited, in the working range, no matter the robot rotates to any position, the transmission performance of movements and forces can remain excellent.
Description
Technical field
The present invention relates to a kind of many parallelogram connection-rods parallel drive spray robot, especially a kind ofly relate to the spray robot being applicable to complex-curved six degree of freedom many parallelogram connection-rods parallel drive such as profile as large in vehicle body, aircraft tail etc.
Background technology
Spraying coating process is one of important process in most industry production, and coating quality directly determines product appearance and product quality.Traditional spraying method mostly is hand spray, because paint vehicle vaporific in spraying process is huge to harm, throw light in painting environment, ventilation condition is very poor, therefore start to use spray robot to replace hand spray in a large number at industrial circle, not only effectively improve working condition, improve the quality of products and sprayed on material utilization rate, also reduce the production cost of enterprise.In addition, spray robot can be deep into the inside of workpiece easily, adds the scope of application of spraying coating process.In a word, spray robot is easy to realize the automation of whole spray-painting production line and the Precise control of spraying coating process.
Chinese patent ZL200910135040.6 discloses a kind of robot spray apparatus, and as illustrated in figs. 13-14, this spray equipment 16 is four axle joint of robot arms, and its free end is sprayer 17, and this sprayer is rotary bell applicator.This robot 16 comprises first or inner arm 32, is installed in robot base 33 at first end, in order to rotate around shoulder axis 34.Second or outer arm 35 be installed on the second end of inner arm 32 at first end, can rotate around elbow axis 36.Sprayer 17 is fixed on the second end of outer arm 35 by wrist 37, and has rotation 38 and tilt axis 39.This wrist 37 is around above-mentioned axis 38 rotary applicators 17, and this axis is parallel to the longitudinal axis of outer arm 35 usually, and this sprayer around axis 39 rotary applicators 17, thus tilts relative to axis 38 by wrist.Therefore, robot 16 opposite base 33 can provide four axes motion, makes arm 32,35, wrist 37, sprayer 17 action on the vertical plane.5th kinematic axis is rail axis 40, and robot base 33 is fixed to as shown in Figure 2 on mount pad 15, and robot 16 can be made to move back and forth along the horizontal longitudinal axes of corresponding frame rail 11.
Such industrial spraying robot overwhelming majority belongs to fisher's formula serial manipulator, and the attitude of its end sprayer is determined by the parameter of each driving joint of robot, and arm has larger space, can realize the motion of various complicated track.The forward kinematics solution of fisher's formula serial manipulator is simple, but its Inverse Kinematics Solution exists the problem of separating more, and the joint of series connection is more usually, and the number of solution is also more.In actual applications, each moment needs to obtain each according to the attitude of shower nozzle against solution and drives parameter, because inverse kinematics model has nonlinear characteristic, there is separate, therefore solution efficiency is lower more in addition, thus responds real-time poor; Need to judge optimum solution in the inverse solution of many groups, this certainly will cause robot control system more complicated, thus adds the production cost of product simultaneously.
Such industrial spraying robot drive motors dispersed placement is at each joint, and cause the comparatively large and dynamic load of robot end's dead load comparatively greatly, and drive motors is the closer to nozzle end, safety in utilization is lower, explosion-proof, dust-proofing cost is higher.The most fatal, if any one knuckle failure of tandem robot, then cause the paralysis of whole spray coating operations, therefore during operation, shut-down fault rate is high.
Such tandem spray robot, drive motors is arranged in each joint.This arrangement due to the dynamic loading of end large, the arm of force is longer, can cause tandem spray robot pedestal and each joint stressed comparatively large, therefore need the strength and stiffness strengthening whole spray robot, thus bring bulky, the heavier-weight of spray robot.
Such tandem spray robot is due to arm rotating multi, its electrical pipeline and fluid flow tube road are usually placed in the hollow part of rod member, thus cause fluid pipe and electrical conduits difficult arrangement and likely produce the mutual winding of pipeline, get rid of potential safety hazard and explosion-proof cost high.
Such tandem spray robot, especially for the spray robot of the complex-curved component of large gabarit, during as the spraying complex-curved for the large profile such as vehicle body, aircraft tail, during the very large operation of, range of movement complicated for such spraying curved surface, operation efficiency is low, controls is complicated, real-time is poor, robot end's dead load comparatively greatly, dynamic load is also larger when moving feature is especially outstanding in the complex-curved spraying of large profile.
The adjustment of such industrial spraying robot terminal angle generally relies between shower nozzle and forearm end to be installed wrist additional to realize, and defeated paint pipeline can only be laid in outside wrist.When wrist rotation, be easy to cause pipeline to be wound around, thus have serious consequences.Although there is oblique hollow wrist at present, it has involved great expense, and controls also complicated.
Summary of the invention
In order to overcome above-mentioned many technical problems, the invention provides a kind of many parallelogram connection-rods parallel drive spray robot, its main drive motors is placed in spray robot base ends, a kind of like this six degree of freedom spray robot of new type series-parallel connected mixing, be easy to realize complex-curved vertical spraying, there is drive characteristic excellent, safety and reliability is high, easy to maintenance, lightweight, high dynamic is good, rigidity is large, control simple, easily realize dust-proof and requirement of explosion proof, conveniently can process the remarkable advantages such as defeated paint pipeline winding problem, automobile can be widely used in, instrument, electrical equipment, enamel, the industrial production sectors such as aviation, be particularly useful for body of a motor car, the spraying operation that the large profile elements such as aircraft tail is complex-curved.
Action and function in solving the problems of the technologies described above of request protection domain of the present invention and the technical problem to be solved in the present invention, the technological means adopted and each technical characteristic of adopting and to illustrate that technical problem that the above-mentioned technological means adopted solves can reach technique effect as follows:
1, the invention provides a kind of many parallelogram connection-rods parallel drive spray robot, it comprises pedestal 3, large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8, moving platform 18 and three parallel parallelogram linkages, it is characterized in that described large arm drive motors 4 and forearm drive motors 10 and pitch regulation motor 8 are all arranged on pedestal 3 one end, and by the moving platform 18 described in described three parallel parallelogram linkage coordinated drive.
Because trolley drive motor 2 of the present invention, large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 are all arranged on pedestal one end, avoid the industrial spraying robot drive motors of prior art the closer to nozzle end, safety in utilization is lower, explosion-proof, dust-proofing cost is higher.
Because trolley drive motor 2 of the present invention, large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 are all arranged on pedestal one end, avoid the industrial spraying robot arm rotating multi of prior art, thus cause fluid pipe and electrical conduits difficult arrangement and likely produce the mutual winding of pipeline, get rid of potential safety hazard and explosion-proof cost high.
Because trolley drive motor 2 of the present invention, large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 are all arranged on pedestal one end, the industrial spraying robot pedestal and each joint that avoid prior art are stressed larger, the industrial spraying robot avoiding prior art needs the strength and stiffness strengthening whole spray robot, avoids bulky, the heavier-weight of the industrial spraying robot of prior art.
Because trolley drive motor 2 of the present invention, large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 are all arranged on pedestal one end, avoid traditional series connection fisher's formula spray robot, its electrical pipeline and fluid flow tube road are usually all in the hollow part of rod member, this not only can increase the difficulty of line arrangement, also there are some potential safety hazards.In the present invention, drive motors centralized arrangement is on pedestal, then electrical pipeline is arranged and can be omitted, and only needs the layout considering fluid flow tube road.So both reduce the difficulty of layout, can also reduce the size of robot end, shower nozzle operation is carried out in the inside making shower nozzle be easy to be deep into workpiece from narrow and small hole wall, indirectly adds the flexibility of mechanism.
The present invention arranges three parallelogram connection-rod type of drive dexterously, thus there is the problem of separating in simple still its Inverse Kinematics Solution of the forward kinematics solution solving prior art fisher's formula serial manipulator more, solve the problem that prior art fisher's formula serial manipulator needs to judge optimum solution and control system more complicated in the inverse solution of many groups, thus achieve the displacement of position by dolly of shower nozzle in space, the angle that large arm and forearm turn over determines, inverse solution like this calculates simply and there is not separate more, the attitude of shower nozzle is by pitch regulation Electric Machine Control, this control mode is also for trajectory planning brings conveniently.
The present invention arranges three parallelogram connection-rod type of drive dexterously, and three parallel-crank mechanisms are designing limit maximum pressure angle, and in job area, no matter what position robot goes to, and the transmission performance of motion and power can keep excellent level;
The present invention arranges three parallelogram connection-rod type of drive dexterously, the ingehious design of three parallel-crank mechanisms by large arm drive motors, forearm drive motors and pitch regulation motor centralized arrangement on pedestal.Motor centralized arrangement just can realize dustproof and anti-explosion requirement easily, improves the safety and reliability of spray robot under this hazardous environment of electrostatic spraying.
The present invention arranges three parallelogram connection-rod type of drive dexterously, owing to introducing parallel institution, the present invention has the advantage of some parallel institutions, thus overcome traditional various defect of series connection fisher's formula robot, such as, the driver part of traditional each rod member of series connection fisher's formula robot is usually placed in joint, the load of other rod members being added in its end so not only will be born near the rod member of pedestal, also to bear the load of drive motors larger than these rod members in weight, cause mechanism cumbersome, dynamic loading is larger.The rod member of each series connection is equivalent to cantilever beam structure simultaneously, and rigidity is also poor.
2, the present invention's many parallelogram connection-rods parallel drive spray robot, it is characterized in that being provided with below described pedestal 3 carrying trolley 1, trolley 1 can deliver on ground or along guide rail the translational degree of freedom that whole robot moves horizontally under the driving of power source 2.
Trolley 1 or can deliver whole robot along guide rail and moves horizontally on ground under the driving of trolley drive motor 2.This makes spray robot have very large working range, is particularly suitable for the spraying of large contoured workpiece.
3, the present invention's many parallelogram connection-rods parallel drive spray robot, characterized by further comprising a telescopic rod 16, described telescopic rod 16 one end 16c stretches out a connecting rod 14d phase ball pivot with one of above-mentioned three parallel parallelogram linkages, phase ball pivot between described telescopic rod 16 other end 16a and the rod end 18b of described moving platform 18, small machine and ball-screw are equipped with in described telescopic rod 16 inside, motor is fixed therein in the hollow pipe 16a of side, during driving, ball-screw drives that another root pipe is corresponding to be stretched out or retract, the change of length of telescopic bar realizes the free degree that swings of moving platform 18.
Micro motor and leading screw have been installed in its inside of telescopic rod 16, can extend easily and shorten, and control shower nozzle 17 preferably and realize swinging.The effect of expansion link 16 is just finely tuned the attitude of shower nozzle 17, its finite energy consumed.Therefore by expansion link 16 size design less, lightweight under the prerequisite can installing micro machine, to reduce the load of spray robot, energy ezpenditure can be reduced.The ball pivot at two ends is convenient to adapt to small machine and ball-screw rotary motion.
4, the present invention's many parallelogram connection-rods parallel drive spray robot, is characterized in that described three parallel parallelogram linkages are respectively: the first parallelogram connection-rod driving mechanism be made up of part, I connecting rod 13, I crank 9 between a branch 12d, the forearm 19 intermediate shaft hole 19a of large arm 12 shift fork and contiguous forearm 19 axle head 19b; The the second parallelogram connection-rod driving mechanism be made up of the side of another branch 12c of large arm 12 shift fork, II crank 7, II connecting rod 11, triangular coupling rod 14; By another side of triangular coupling rod 14, the 3rd parallelogram connection-rod driving mechanism that between forearm 19 intermediate shaft hole 19a and forearm 19 axle head 19a, part, moving platform 18 shaft portion, III connecting rod 15 are formed.
The present invention arranges three parallelogram connection-rod type of drive dexterously, three parallelogram connection-rod driving mechanisms share same bearing pin, share parts between two, three parallel-crank mechanisms are designing limit maximum pressure angle, in job area, no matter what position robot goes to, and the transmission performance of motion and power can keep excellent level; The industrial spraying robot pedestal and each joint that avoid prior art are stressed larger, the industrial spraying robot avoiding prior art needs the strength and stiffness strengthening whole spray robot, avoids bulky, the heavier-weight of the industrial spraying robot of prior art.
5, the present invention's many parallelogram connection-rods parallel drive spray robot, is characterized in that the support rotary oscillation that described large arm drive motors 4 drives large arm 12 on pedestal 3; Described pitch regulation motor (8) drives the support rotary oscillation of II crank (7) on pedestal; Described forearm drive motors (10) drives the support rotary oscillation of I crank (9) on pedestal (3); Described moving platform 18 has perpendicular to two translational degree of freedom in dolly advance direction plane under the drive of described large arm 12 and described forearm 19; Under the drive of described III connecting rod 15, there is the rotational freedom that can realize pitching.
Trolley drive motor 2 of the present invention, large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 are all arranged on pedestal one end, thus the industrial spraying robot drive motors dispersed placement overcoming prior art is at each joint, cause robot end's dead load larger, the defect that during motion, dynamic load is also larger, and will moving platform 18 be realized at the rotational freedom perpendicular to two translational degree of freedom in dolly advance direction plane and pitching by three parallelogram connection-rod driving mechanisms.
6, the present invention's many parallelogram connection-rods parallel drive spray robot, characterized by further comprising a telescopic rod 16, described telescopic rod 16 one end 16c stretches out a connecting rod (14d phase ball pivot with one of above-mentioned three parallel parallelogram linkages, phase ball pivot between described telescopic rod 16 other end 16a and the rod end 18b of described moving platform 18, small machine and ball-screw are equipped with in described telescopic rod 16 inside, motor is fixed therein in the hollow pipe 16a of side, during driving, ball-screw drives that another root pipe is corresponding to be stretched out or retract, the change of telescopic rod 16 length realizes the free degree that swings of moving platform 18.
Micro motor and leading screw have been installed in its inside of telescopic rod 16, can extend easily and shorten, and control shower nozzle 17 preferably and realize swinging.The effect of expansion link 16 is just finely tuned the attitude of shower nozzle 17, its finite energy consumed.Therefore by expansion link 16 size design less, lightweight under the prerequisite can installing micro machine, to reduce the load of spray robot, energy ezpenditure can be reduced.The ball pivot at two ends is convenient to offset and adapt to small machine and ball-screw rotary motion.The free degree that swings of moving platform 18 can also be realized.
7, the present invention's many parallelogram connection-rods parallel drive spray robot, is characterized in that the first described parallelogram connection-rod driving mechanism and the second described parallelogram connection-rod driving mechanism are connected together by bearing pin respectively by the large arm 12 of the shift fork shape shared.
This spline structure of large arm 12 of the present invention not only increases connecting rod strength and rigidity, and achieves the dual-purpose object of a bar.By integral for two parallelogram connection-rod driving mechanism limits, designing limit maximum pressure angle, in job area, no matter what position robot goes to, and the transmission performance of motion and power can keep excellent level; The industrial spraying robot pedestal and each joint that avoid prior art are stressed larger, the industrial spraying robot avoiding prior art needs the strength and stiffness strengthening whole spray robot, avoids bulky, the heavier-weight of the industrial spraying robot of prior art.
8, the present invention's many parallelogram connection-rods parallel drive spray robot, is characterized in that the second described parallelogram connection-rod driving mechanism and the 3rd described parallelogram connection-rod driving mechanism are connected together respectively by common triangular coupling rod 14 different sides.
Triangular coupling rod 14 1 side of the present invention constitutes a connecting rod in the present invention's second parallelogram connection-rod, and another side constitutes a connecting rod in the present invention's the 3rd parallelogram connection-rod.This spline structure of triangular coupling rod 14 of the present invention not only increases connecting rod strength and rigidity, and achieves the object of multi-use.Designing limit maximum pressure angle, in job area, no matter what position robot goes to, and the transmission performance of motion and power can keep excellent level; The industrial spraying robot pedestal and each joint that avoid prior art are stressed larger, the industrial spraying robot avoiding prior art needs the strength and stiffness strengthening whole spray robot, avoids bulky, the heavier-weight of the industrial spraying robot of prior art.
9, the present invention's many parallelogram connection-rods parallel drive spray robot, is characterized in that described large arm drive motors 4 drives worm gear 6 rotary motion by worm screw 5, the rotary motion of worm gear 6 rotational movement large arm 12.
Because worm couple has the advantage that gearratio is large and driving torque is large, therefore the present invention selects worm couple as gear transmission large arm 12.
10, the present invention's many parallelogram connection-rods parallel drive spray robot, it is characterized in that described large arm 12 is a bending shift fork shape, it collects axle head 12a and is branched into two drive link 12c and 12d, and bifurcated two end points 12b of its large arm 12 are connected and are connected with triangular coupling rod 14 axis hole 14c with described forearm 19 intermediate shaft hole 19a by bearing pin respectively.
Spray robot is in the process of work, and it is inevitable that its end produces the flutter continued.These vibrations are delivered to the hinged place 12b of large arm 19 and swinging axle through forearm 19, III connecting rod 15, large arm 12 etc.When the dynamic loading of end is larger, strong with regard to Shaoxing opera to the destruction of its hinged place, cause large arm 12 to bend the distortion of shift fork shape more obvious.For this reason, large arm 12 is designed to bending shift fork shape and structure, dynamic load impact will be reduced by bending method exactly.
11, the present invention's many parallelogram connection-rods parallel drive spray robot, it is characterized in that described triangular coupling rod 14 comprises three axis holes 14a, 14b, 14c, its top axis hole 14c with by bearing pin respectively with bifurcated two end points 12b of its large arm 12, be connected with forearm 19 intermediate shaft hole 19a; Base axis hole 14a is connected with II connecting rod 11 axis hole by bearing pin; Base another axis hole 14b is connected with III connecting rod 15 axis hole by bearing pin; Stretches out a connecting rod 14d in the middle of described triangular coupling rod 14, its with; Described telescopic rod 16 one end 16b phase ball pivot.
These two parallelogram connection-rods drive and are coupled by triangular coupling rod 14 of the present invention, the pitch regulation of moving platform 18 is gone to II crank 7 realize, and between them, there is linear relationship, pitch regulation motor 8 drives II crank 7 to turn over certain angle, moving platform 18 also turns over identical angle, and speed, acceleration are also consistent.The effect of these two parallelogram is equivalent to indirectly control moving platform 18 by by Direct driver moving platform 18 rotation transferred to by controlling I crank 9.Due to the angle turned between them, the speed of rotating is all equal with acceleration, when shower nozzle 17 needs relative to spraying surface of the work the adjustment doing pitch attitude, Surface Method is used as angular displacement that pitch regulation motor 8 needs to export, speed, amount of acceleration to the rule of change.
12, the present invention's many parallelogram connection-rods parallel drive spray robot, characterized by further comprising a shower nozzle 17, and described shower nozzle 17 is cemented on the coupling part 18a of described moving platform 18.
In the present invention, shower nozzle 17 is motionless relative to moving platform 18, can better avoid the adjustment of traditional series connection fisher's formula spray robot terminal angle generally to rely between shower nozzle and forearm end to install wrist additional to realize, defeated paint pipeline can only be laid in outside wrist, when wrist rotation, is easy to cause pipeline to be wound around, thus have serious consequences, although there is oblique hollow wrist at present, it has involved great expense, and controls also complicated.
13 the present invention's many parallelogram connection-rods parallel drive spray robots, it is characterized in that described moving platform 18 extends three connecting rods in mutually perpendicular direction, the rod end of every root connecting rod arranges three typed ball bearing pair 18b, 18c, 18d, two typed ball bearing pair 18d, 18c are positioned at together diametrically, another typed ball bearing pair 18b is positioned on the deviation post of the axis perpendicular with above-mentioned diameter, two typed ball bearing pair 18d, 18c are connected with described forearm 19 axle head 19a with described III connecting rod 15 respectively, and another typed ball bearing pair 18b is connected with telescopic rod 16.
Being provided with of above-mentioned typed ball bearing pair is beneficial to the various posture changing of moving platform 18, thus by many parallelogram connection-rods parallel drive and telescopic rod 16 stretch out or retraction movement converts the motion of the six degree of freedom of shower nozzle 17 to.According to the change of spraying surface of the work, control large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 and telescopic rod 16, vertically spray complex-curved arbitrarily with regard to ensureing, make spraying more even, reach better spraying coating process effect.
14, the present invention's many parallelogram connection-rods parallel drive spray robot, it is characterized in that described large arm 12 is variable section structure, the shift fork hollow structure of described large arm 12 arranges the fluid flow tube road of spraying.
In order to reduce own load, large arm 12 eliminates a part of material.The shift fork hollow structure of large arm 12 is mainly in order to needs are arranged on the fluid flow tube road of satisfied spraying, the design of large arm 12 has focused on the consumption that lightweight requirements reduces material under the prerequisite ensureing reliability, also taken into account the aesthetic property of mechanism, design simultaneously also ensure that these parts are easy to manufacture.Large arm 12 adopts the design of equal strength variable cross-section, and the benefit done like this is, can economize material, loss of weight under the prerequisite that intensity meets the demands, and makes robot light and handy, flexible, can also eliminate the low-frequency vibration produced in shower nozzle 17 course of work.
15, the present invention's many parallelogram connection-rods parallel drive spray robot, is characterized in that described forearm 19 is the structure of variable cross-section, eliminates a part of material in the middle of it.
In order to reduce forearm 19 load; forearm 19 mid portion eliminates a part of material; above-mentioned design is all feasible and useful on theory analysis or in the manufacturing; in order to reduce own load; also eliminate a part of material, by the service life of uniform strength design method elongate member.Both taken into account the aesthetic property of mechanism, design simultaneously also ensure that these parts are easy to manufacture.
16, the present invention's many parallelogram connection-rods parallel drive spray robot, is characterized in that described I crank 9 is identical with the dimensional parameters of described II crank 7; The structure of described I connecting rod 13 is identical with the dimensional parameters of described II connecting rod 11, described III connecting rod 15.
Same or similar parts, in order to product interchangeability and processing economy, are adopted same or similar dimensional parameters, thus have saved cost, reduce energy consumption by the present invention.
17, the present invention's many parallelogram connection-rods parallel drive spray robot, is characterized in that three described parallelogram connection-rod place planes are parallel to each other.
The present invention arranges three parallelogram connection-rod place planes dexterously and is parallel to each other, thus there is the problem of separating in simple still its Inverse Kinematics Solution of the forward kinematics solution solving prior art fisher's formula serial manipulator more, solve the problem that prior art fisher's formula serial manipulator needs to judge optimum solution and control system more complicated in the inverse solution of many groups, thus achieve the displacement of position by dolly of shower nozzle in space, the angle that large arm and forearm turn over determines, inverse solution like this calculates simply and there is not separate more, the attitude of shower nozzle is by pitch regulation motor and the Electric Machine Control being positioned at expansion link inside, because these two turning cylinders are orthogonal, can not disturb each other, this control mode is also for trajectory planning brings conveniently.The present invention arranges three parallelogram connection-rod type of drive dexterously, and three parallel-crank mechanisms are designing limit maximum pressure angle, and in job area, no matter what position robot goes to, and the transmission performance of motion and power can keep excellent level.
18, the present invention's many parallelogram connection-rods parallel drive spray robot, all supporting structures that it is characterized in that on described pedestal 3 ensure that the pivot center coincidence conllinear of large arm 12, I crank 9, II crank 7.
The pivot center coincidence conllinear of large arm 12 of the present invention, I crank 9, II crank 7, guarantees compact conformation, is positioned near pedestal 3 symmetrical center line, steadily of centre of gravity, and is convenient to arrange worm screw 5, worm gear 6 reducing gear.
19, the present invention's many parallelogram connection-rods parallel drive spray robot, it is characterized in that the forearm drive motors 10 on described pedestal 3 and pitch regulation motor 8 coaxial line layout, and large arm drive motors 4 is arranged on the axis vertical with above-mentioned coaxial space, such layout is convenient to homogenising pedestal 3 load, makes trolley uniform load.
Forearm drive motors 10 and pitch regulation motor 8 conllinear are arranged, then the large arm 12 mediated needs to place large arm drive motors 4 at the middle part of pedestal.Consider that large arm 12 is topmost carrying and motion rod member, the power of required motor is comparatively large, and the size of drive motors is also comparatively large, is arranged in intermediate demand and takies very large space.Such layout is convenient to homogenising pedestal 3 load, makes trolley uniform load.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of the present invention's many parallelogram connection-rods parallel drive spray robot;
Fig. 2 is the foundation means schematic diagram of the present invention's many parallelogram connection-rods parallel drive spray robot;
Fig. 3 is the pedestal driving relationship partial schematic diagram of the present invention's many parallelogram connection-rods parallel drive spray robot;
Fig. 4 is the present invention's many parallelogram connection-rods parallel drive spraying robot robot end annexation partial schematic diagram;
Fig. 5 A, 5B are the large arm structural representations of the present invention's many parallelogram connection-rods parallel drive spray robot;
Fig. 6 A, 6B are the forearm structure schematic diagrames of the present invention's many parallelogram connection-rods parallel drive spray robot;
Fig. 7 A, 7B are the I crank structure schematic diagrames of the present invention's many parallelogram connection-rods parallel drive spray robot;
Fig. 8 A, 8B are the I bar linkage structure schematic diagrames of the present invention's many parallelogram connection-rods parallel drive spray robot;
Fig. 9 A, 9B are the triangular coupling rod structural representations of the present invention's many parallelogram connection-rods parallel drive spray robot;
Figure 10 A-10C is moving platform and the shower nozzle syndeton schematic diagram of the present invention's many parallelogram connection-rods parallel drive spray robot;
Figure 11 A, 11B are the telescopic rod tubular structure schematic diagrames of the present invention's many parallelogram connection-rods parallel drive spray robot;
Figure 12 A, 12B are the telescopic rod solid tubes structural representations of the present invention's many parallelogram connection-rods parallel drive spray robot;
Figure 13-Figure 14 is the robot spray apparatus structural representation of prior art;
Under wherein Main Reference Numerals represents duty: 1-trolley; 2-trolley drive motor; 3-pedestal; 4-large arm drive motors; 5-worm screw; 6-worm gear; 7-II crank; 8-pitch regulation motor; 9-I crank; 10-forearm drive motors; 11-II connecting rod; 12-large arm; 13-I connecting rod; 14-triangular coupling rod; 15-III connecting rod; 16-telescopic rod; 17-shower nozzle; 18-moving platform; 19-forearm
Detailed description of the invention
Below in conjunction with accompanying drawing, describe inventive concept of the present invention in detail, be intended to the technical problem to be solved in the present invention is described, the technological means adopted, and the action and function of each technical characteristic in solving the problems of the technologies described above adopted, and illustrate that the technical problem that the above-mentioned technological means adopted solves can reach technique effect.
Fig. 1 is the general assembly schematic diagram of the present invention's many parallelogram connection-rods parallel drive spray robot, which gives overall and motion structure of the present invention.As shown in Fig. 1 direction of arrow, spraying robot people of the present invention, for possessing 5 free degree spray robots, comprises 3 translational degree of freedom and 2 rotational freedoms.Wherein, trolley 1 has a translational degree of freedom along car body direction of advance under the driving of trolley drive motor 2; Moving platform 18 has perpendicular to two translational degree of freedom in dolly advance direction plane together with shower nozzle 17 under the drive of large arm 12 and forearm 19; There is the rotational freedom that can realize pitching under the drive of III connecting rod 15; There is a rotational freedom that can swing under the driving of telescopic rod 16.
These 5 free degree power sources are respectively: trolley 1 or can deliver whole robot along guide rail and moves horizontally on ground under the driving of trolley drive motor 2; Large arm drive motors 4 drives the support rotary oscillation of large arm on pedestal; Pitch regulation motor 8 drives the support rotary oscillation of II crank 7 on pedestal; Forearm drive motors 10 drives the support rotary oscillation of I crank 9 on pedestal; Telescopic rod 16 is actually two sections of hollow pipes, small machine and leading screw are equipped with in inside, (not shown) in the hollow pipe that motor is fixed therein, during driving, leading screw drives that another root pipe is corresponding to be stretched out or retract, and the change of length of telescopic bar can realize swinging of moving platform 18.
Be described in detail below in conjunction with the structure of above-mentioned 5 free degree type of drive to six degree of freedom spray robot of the present invention.
As Figure 1-3, the structure of pedestal 3 mainly comprises base plate and the holder part that a piece is shaped with bolt hole.Base plate is fastened on the surface of trolley 1 by bolt group, and robot is moved with dolly.Support on pedestal can support large arm drive motors 4, worm screw 5, worm gear 6, large arm 12, forearm drive motors 10, I crank 9, pitch regulation motor 8, II crank 7, and ensures to rotate about the axis driving (not shown) by the mode of corresponding shaft hole matching.
Trolley 1 or can deliver whole robot along guide rail and moves horizontally on ground under the driving of trolley drive motor 2.As shown in figures 1 and 3, trolley 1 or can deliver whole robot along guide rail (not shown) and moves horizontally on ground under the driving of wheel drive motors 2, embodiment of the present invention provides on the wheel of two pairs, dolly one end and has installed drive motors 2, those skilled in the art should understand that this drive motors can have the different embodiments such as a drive motors, two drive motors and four drive motors; Guide rail is also not limited to slide rail form, also can be rack-and-pinion type of drive, sprocket wheel chain type of drive, and can also be even slide rail module type of drive, this makes spray robot have very large working range, is particularly suitable for the spraying of large contoured workpiece.
As shown in Figures 2 and 3, this trolley 1 carries spray robot base 3 of the present invention, base 3 is separately installed with the support 26 of the support 21 of carrying large arm drive motors 4, the support 23 of carrying pitch regulation motor 8, the first support 24 carrying the swinging axle of large arm 12 and the second support 25, carrying forearm drive motors 10.Wherein carry the as a whole supporting construction of the first support 24 of the support 21 of large arm drive motors 4, the support 23 of carrying pitch regulation motor 8, the swinging axle of carrying large arm 12; First support 24 of swinging axle of carrying large arm 12 and the corresponding horizontal symmetrical of axis hole of the second support 25, to install the swinging axle of large arm 12; The support 26 of carrying forearm drive motors 10 is convenient to install support I crank 9 mechanism (shown in Fig. 3) and forearm drive motors 10; The support 23 of carrying pitch regulation motor 8 is convenient to install support II crank 7 (shown in Fig. 3) and pitch regulation motor 8.
Forearm drive motors 10 on pedestal 3 and pitch regulation motor 8 conllinear are arranged, and large arm drive motors 4 is arranged on the axis vertical with above-mentioned coaxial space.All supporting structures on pedestal 3 ensure that the pivot center coincidence conllinear of large arm 12, I crank 9, II crank 7.
Large arm drive motors 4 drives the support 23 of large arm above the support 21 of pedestal 3 and the first support 24 rotary oscillation axle to rotate.As shown in Figure 3, large arm drive motors 4 drives worm gear 6 rotary motion by worm screw 5, the rotary motion of worm gear 6 rotational movement large arm 12, worm couple has the advantage that gearratio is large and driving torque is large, and therefore the present invention selects worm couple as gear transmission large arm 12.Concrete structure is: the output shaft of large arm drive motors 4 is connected to worm screw 5 by shaft coupling, and worm screw 5 is vertically meshed with worm gear 6, and worm gear 6 is arranged on (shown in Fig. 5 A and Fig. 5 B) on the swinging axle of large arm 12 one end 12a by spline or flat key.In order to realize larger gearratio, the present invention directly can also drive worm screw to rotate by large arm drive motors 4 output shaft after decelerator, and then by the meshing relation between worm and wormwheel, worm gear 6 rotates with slower speed.Worm gear 6 is arranged on the swinging axle of large arm 12 one end 12a by spline or flat key cooperation, large arm 12 is also arranged on this swinging axle axle by same mode, thus guarantee that large arm 12 rotates identical angle around the rotation of this swinging axle with worm gear 6, as long as the angle therefore controlling the output of large arm drive motors 4 just can determine large arm 12 position in space, the speed controlling the output of large arm drive motors 4 is also just corresponding determines the speed that large arm 12 is rotated.
As can be seen here, trolley drive motor 2 of the present invention, large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 are all arranged on pedestal one end, thus the industrial spraying robot drive motors dispersed placement overcoming prior art is at each joint, cause robot end's dead load comparatively large, the defect that during motion, dynamic load is also larger.
Because the trolley drive motor 2 of invention, large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 are all arranged on pedestal one end, avoid the industrial spraying robot drive motors of prior art the closer to nozzle end, safety in utilization is lower, explosion-proof, dust-proofing cost is higher.
Because the trolley drive motor 2 of invention, large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 are all arranged on pedestal one end, avoid the industrial spraying robot arm rotating multi of prior art, thus cause fluid pipe and electrical conduits difficult arrangement and likely produce the mutual winding of pipeline, get rid of potential safety hazard and explosion-proof cost high.
Because the trolley drive motor 2 of invention, large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 are all arranged on pedestal one end, the industrial spraying robot pedestal and each joint that avoid prior art are stressed larger, the industrial spraying robot avoiding prior art needs the strength and stiffness strengthening whole spray robot, avoids bulky, the heavier-weight of the industrial spraying robot of prior art.
Because the trolley drive motor 2 of invention, large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 are all arranged on pedestal one end, avoid traditional series connection fisher's formula spray robot, its electrical pipeline and fluid flow tube road are usually all in the hollow part of rod member, this not only can increase the difficulty of line arrangement, also there are some potential safety hazards.In the present invention, drive motors centralized arrangement is on pedestal, then electrical pipeline is arranged and can be omitted, and only needs the layout considering fluid flow tube road.So both reduce the difficulty of layout, can also reduce the size of robot end, shower nozzle operation is carried out in the inside making shower nozzle be easy to be deep into workpiece from narrow and small hole wall, indirectly adds the flexibility of mechanism.
As shown in Fig. 5,6,9, large arm 12 of the present invention is a bending shift fork shape, it collects all-in-one-piece axle head 12a and is branched into two drive link 12c and 12d, and bifurcated two end points 12b of its large arm 12 are connected with forearm 19 intermediate shaft hole 19a respectively by bearing pin and are connected with triangular coupling rod 14 axis hole 14c.This spline structure of large arm 12 of the present invention not only increases connecting rod strength and rigidity, and achieves the dual-purpose object of a bar.
The function of large arm 12 is except providing a supporting role parts such as forearm 19, delta links 14, and the power transmission simultaneously exported by large arm drive motors 4 is to forearm 19.Spray robot is in the process of work, and it is inevitable that its end produces the flutter continued.These vibrations are delivered to the hinged place 12b of large arm 19 and swinging axle through forearm 19, III connecting rod 15, large arm 12 etc.When the dynamic loading of end is larger, strong with regard to Shaoxing opera to the destruction of its hinged place, cause large arm 12 to bend the distortion of shift fork shape more obvious.For this reason, large arm 12 being designed to variable section structure, is exactly will by the service life of equal strength method elongate member.In order to reduce own load, large arm 12 eliminates a part of material.The hollow structure of large arm 12 is mainly in order to needs are arranged on the fluid flow tube road of satisfied spraying.The design of large arm 12 has focused on the consumption that lightweight requirements reduces material under the prerequisite ensureing reliability, has also taken into account the aesthetic property of mechanism, and design simultaneously also ensure that these parts are easy to manufacture.
As shown in Fig. 4,6, the function of forearm 19 mainly provides a supporting role the installation of shower nozzle, and the power transmission simultaneously large arm drive motors 4, forearm drive motors 10 exported, to shower nozzle, makes shower nozzle translation in the plane perpendicular to dolly 1 direction of advance.For the vibration that produces when reducing shower nozzle work is to the fatigue damage of forearm 19 particularly itself and large arm 12 hinged place 12b, forearm 19 is also designed to the structure of variable cross-section.In order to reduce forearm 19 load, illustrated that forearm 19 eliminates a part of material in Fig. 6, above-mentioned design is all feasible and useful on theory analysis or in the manufacturing.
As Fig. 1,3, shown in 5A, 5B, 6A, 6B, 8A, 8B, 10B, a branch 12d other end 12b of large arm 12 shift fork is connected with forearm 19 intermediate shaft hole 19a by bearing pin, the forearm 19 axle head 19b contiguous with intermediate shaft hole 19a is connected with I connecting rod 13 axle head 13a; another axle head of forearm 19 19c is connected with the ball pivot 18c of moving platform 18, and moving platform 18 drives shower nozzle 17 to rotate.As long as the angle controlling the output of large arm drive motors 4 just can determine large arm 12 position in space, the speed controlling the output of large arm drive motors 4 is also just corresponding determines the speed that large arm 12 is rotated.The axis that the some 19a that forearm 19 and a branch 12d of large arm 12 shift fork are hinged is connected with pedestal around large arm 12 moves in a circle.The speed of the position that large arm 12 turns over and rotation is actually position and the speed of the branch 12d pin joint 19a determining forearm 19 and large arm 12 shift fork.Forearm 19 planar makes compound motion, the motion of forearm 19 end is still can not determine in the motion of the pin joint 19a of a branch 12d of itself and large arm 12 shift fork; one end of forearm 19 is also hinged with I connecting rod 13 axle head 13a; forearm drive motors 10 is via I crank 9, I connecting rod 13, and final sum large arm 12 together drives forearm 19 to rotate.The end 19c of forearm 19 is the position that shower nozzle investigates point.Between a branch 12d, the forearm 19 intermediate shaft hole 19a of large arm 12 shift fork and contiguous forearm 19 axle head 19b, part, I connecting rod 13, I crank 9 constitute first parallelogram connection-rod type of drive of the present invention, first parallelogram connection-rod of the present invention is connected with the ball pivot 18c of moving platform 18 by another axle head of forearm 19 19c, and moving platform 18 drives shower nozzle 17 to rotate.
Be parallel to each other with first parallelogram connection-rod place plane of the present invention, also having second, third parallelogram connection-rod type of drive of the present invention.As shown in Fig. 1,3,4, second parallelogram connection-rod of the present invention is made up of the side of a branch 12c of large arm 12 shift fork, II crank 7, II connecting rod 11, triangular coupling rod 14.The present invention's the 3rd parallelogram connection-rod is by another side of triangular coupling rod 14, between forearm 19 intermediate shaft hole 19a and forearm 19 axle head 19a, part, moving platform 18 shaft portion, III connecting rod 15 form.
As shown in Fig. 4,9, triangular coupling rod 14 of the present invention comprises three axis holes 14a, 14b, 14c, its top axis hole 14c with by bearing pin respectively with bifurcated two end points 12b of its large arm 12, be connected with forearm 19 intermediate shaft hole 19a; Base axis hole 14a is connected with II connecting rod 11 axis hole by bearing pin; Base another axis hole 14b is connected with III connecting rod 15 axis hole by bearing pin.Triangular coupling rod 14 1 side of the present invention constitutes a connecting rod in the present invention's second parallelogram connection-rod, and another side constitutes a connecting rod in the present invention's the 3rd parallelogram connection-rod.This spline structure of triangular coupling rod 14 of the present invention not only increases connecting rod strength and rigidity, and achieves the object of multi-use.Triangular coupling rod 14 of the present invention by the sports coupling of these two parallelogram together, the pitch regulation of moving platform 18 is gone to II crank 7 realize, and between them, there is linear relationship, pitch regulation motor 8 drives II crank 7 to turn over certain angle, moving platform 18 also turns over identical angle, and speed, acceleration are also consistent.The effect of these two parallelogram is equivalent to indirectly control moving platform 18 by by Direct driver moving platform 18 rotation transferred to by controlling I crank 9.Due to the angle turned between them, the speed of rotating is all equal with acceleration, when shower nozzle 17 needs relative to spraying surface of the work the adjustment doing pitch attitude, Surface Method is used as angular displacement that pitch regulation motor 8 needs to export, speed, amount of acceleration to the rule of change.
A connecting rod 14d is stretched out in the middle of triangular coupling rod 14, itself and telescopic rod 16 one end 16b phase ball pivot, phase ball pivot between telescopic rod 16 other end 16a and the rod end 18b of moving platform 18, telescopic rod 16 is actually two sections of hollow pipes, small machine and ball-screw are equipped with in inside, motor is fixed in the hollow pipe 16a of wherein shown in Figure 11, during driving, leading screw drives that another root pipe is corresponding to be stretched out or retract, and the change of length of telescopic bar can realize the (not shown) that swings of moving platform 18.The ball screw drives structure of the associated machine robot arm that its concrete structure can be applied in the past see the applicant.
As can be seen here, the present invention arranges three parallelogram connection-rod type of drive dexterously, thus there is the problem of separating in simple still its Inverse Kinematics Solution of the forward kinematics solution solving prior art fisher's formula serial manipulator more, solve the problem that prior art fisher's formula serial manipulator needs to judge optimum solution and control system more complicated in the inverse solution of many groups, thus achieve the displacement of position by dolly of shower nozzle in space, the angle that large arm and forearm turn over determines, inverse solution like this calculates simply and there is not separate more, the attitude of shower nozzle is by pitch regulation motor and the Electric Machine Control being positioned at expansion link inside, because these two turning cylinders are orthogonal, can not disturb each other, this control mode is also for trajectory planning brings conveniently.
The present invention arranges three parallelogram connection-rod type of drive dexterously, and three parallel-crank mechanisms are designing limit maximum pressure angle, and in job area, no matter what position robot goes to, and the transmission performance of motion and power can keep excellent level;
Invention arranges three parallelogram connection-rod type of drive dexterously, the ingehious design of three parallel-crank mechanisms by large arm drive motors, forearm drive motors and pitch regulation motor centralized arrangement on pedestal.Motor centralized arrangement just can realize dustproof and anti-explosion requirement easily, improves the safety and reliability of spray robot under this hazardous environment of electrostatic spraying.
Invention arranges three parallelogram connection-rod type of drive dexterously, owing to introducing parallel institution, the present invention has the advantage of some parallel institutions, thus overcome traditional various defect of series connection fisher's formula robot, such as, the driver part of traditional each rod member of series connection fisher's formula robot is usually placed in joint, the load of other rod members being added in its end so not only will be born near the rod member of pedestal, also to bear the load of drive motors larger than these rod members in weight, cause mechanism cumbersome, dynamic loading is larger.The rod member of each series connection is equivalent to cantilever beam structure simultaneously, and rigidity is also poor.
Invention arranges three parallelogram connection-rod type of drive dexterously, and such structure control is simple.If disregard the offset or dish between nozzle and moving platform, the position of shower nozzle and attitude are decoupling zeros.The angle that the position of shower nozzle is turned over by the displacement of dolly, large arm and forearm in space determines, has mentioned this inverse solution above and has calculated simply and there is not separate more.The attitude of shower nozzle, by pitch regulation motor and the Electric Machine Control being positioned at expansion link inside, because these two turning cylinders are orthogonal, can not be disturbed each other, and this control mode is also for trajectory planning brings conveniently.
Should be appreciated that, the present invention's connecting rod substitutes the words of telescopic rod 16, the attitude of shower nozzle is only by pitch regulation Electric Machine Control, its control is simpler, thus the present invention constitutes the spray robot of six degree of freedom many parallelogram connection-rods parallel drive, the angle that the position of shower nozzle is turned over by the displacement of dolly, large arm and forearm in space determines.Also solve forward kinematics solution simple still its Inverse Kinematics Solution existence problem of separating of prior art fisher's formula serial manipulator, solve prior art fisher's formula serial manipulator needs organizing the problem judging optimum solution and control system more complicated in inverse solution more more.
As shown in Fig. 4,10, shower nozzle 17 is cemented on the coupling part 18a of moving platform 18, moving platform 18 extends three connecting rods in mutually perpendicular direction, the rod end of every root connecting rod arranges typed ball bearing pair 18b, 18c, 18d, typed ball bearing pair 18d, 18c are positioned at together diametrically, typed ball bearing pair 18b is positioned on the deviation post of the axis perpendicular with above-mentioned diameter, and typed ball bearing pair 18d, 18c are connected with forearm 19 axle head 19a with III connecting rod 15 respectively, and typed ball bearing pair 18b is connected with telescopic rod 16.Above-mentioned typed ball bearing pair is provided with and is beneficial to the various posture changing of moving platform 18, thus by many parallelogram connection-rods parallel drive and telescopic rod 16 stretch out or retraction movement converts the motion of the six degree of freedom of shower nozzle 17 to.According to the change of spraying surface of the work, control large arm drive motors 4, forearm drive motors 10, pitch regulation motor 8 and telescopic rod 16, vertically spray complex-curved arbitrarily with regard to ensureing, make spraying more even, reach better spraying coating process effect.The moving platform 18 of spray robot has two rotational freedoms, when spraying operation, can be adjusted the attitude of shower nozzle, therefore, it is possible to meet the requirement of vertical workpiece surface spraying preferably by the rotation of this both direction.In the present invention, shower nozzle is motionless relative to moving platform, and the adjustment of traditional series connection fisher's formula spray robot terminal angle better can be avoided generally to rely between shower nozzle and forearm end and install wrist additional to realize, defeated paint pipeline can only be laid in outside wrist.When wrist rotation, be easy to cause pipeline to be wound around, thus have serious consequences, although there is oblique hollow wrist at present, it has involved great expense, and controls also complicated.
Figure 7 show the structure of I crank 9.The function of I crank 9 provides a supporting role the installation of I connecting rod 13, forearm drive motors 10 outputting power passed to I connecting rod 13 simultaneously.The power transmitted due to forearm drive motors is less, and therefore its size value is less in design.In order to reduce the cost that robot manufactures and designs, the dimensional parameters of II crank 7 is identical with it.Focus on the compactedness requirement of lightweight and structure in the design of I crank 9, made its consumed energy on the basis meeting key property less.
Fig. 8 illustrating is the structure of I connecting rod 13.The function of I connecting rod 13 be power transmission that forearm drive motors 10 is exported to forearm 19, control shower nozzle translation planar together with large arm 12.Because the power transmitted is less, its design can be uniform elongated solid bar, even also can be designed to hollow-core construction.In order to reduce the convenience of cost and the installation manufactured and designed, it is identical with the dimensional parameters of II connecting rod 11, III connecting rod 15, this design has better highlighted the symmetry feature of mechanism, is also conducive to the transmission of lasting flutter in mechanism eliminating shower nozzle 17 generation.
Figure 9 show the structure of triangular coupling rod 14, triangular coupling rod 14 is hinged on the side 12c of large arm 12, and its effect provides a supporting role the installation of II connecting rod 11, III connecting rod 15, and III connecting rod 15 is given in the power transmission simultaneously exported by pitching motor 8.The sports coupling of two parallelogram gets up by triangular coupling rod 14, and its two limits are respectively parallelogram, and the angle on its both sides is constant.Above-mentioned design can ensure the angle of pitch to carry out reliable delivery, and its inside is that hollow-core construction is mainly limited based on the power transmitted, and lightweight can effectively reduce its load, reduces the energy ezpenditure of pitching drive motors 8.
Accompanying drawing 10 illustrates the structure of shower nozzle 17.The design of shower nozzle 17 is mainly based on 3 points: be first the spraying realizing aqueous coating, its inside need be designed with aperture, so that sprayed on material under high pressure evenly sprays.Secondly the size of shower nozzle 17 needs to minimize, so that shower nozzle 17 can be deep into the inside of micro-element, also reduces the load of self simultaneously.Moreover, shower nozzle 17 by moving platform 18 can reliably and III connecting rod 15, forearm 19, telescopic rod 16 hinged, operation can be carried out according to the path of planning in advance.The design of shower nozzle 17 has also taken into account cosmetic requirements, also conveniently carries out suitability for industrialized production.
Accompanying drawing 11 and accompanying drawing 12 have shown the structure of telescopic rod 16.Telescopic rod 16 is two sections of blank pipes compositions, respectively with shower nozzle 17 and triangular coupling rod 14 hinged, micro motor and leading screw have been installed in its inside, can extend easily and shorten, control shower nozzle 17 realization preferably and swing.The effect of expansion link 16 is just finely tuned the attitude of shower nozzle 17, its finite energy consumed.Therefore by expansion link 16 size design less under the prerequisite can installing micro machine, to reduce the load of spray robot, energy ezpenditure can be reduced.
For the ease of understanding, this description provides concrete enforcement various embodiment of the present invention, to those skilled in the art, above-mentioned various embodiment is only exemplary, and can not the various potential embodiment of limit the present invention, as large arm of the present invention can adopt Split type structure, can adopt rod shaped structure etc.; Triangular coupling rod structure of the present invention adopts set square alternative; The alternative of various crank structure, hollow and the solid construction of connecting rod, and omit the bad replacement of change of the big and small arms variable cross-section design in order to reduce vibration and fatigue damage, and many quadrilateral connecting rods parallel mechanism structure right position ordinal relation and quantity increase and decrease, and the spray robot of this many parallelogram connection-rods parallel drive is used for the various robot application fields such as product carrying, Product Assembly, explosion-protection equipment dismounting, detection, fire-fighting.These changes, amendment, change and application adjustment all do not depart within the scope of practicalness of the present invention and available protecting.
Claims (20)
1. the spray robot of parallelogram connection-rod parallel drive more than a kind, it comprises pedestal (3), large arm drive motors (4), forearm drive motors (10), pitch regulation motor (8), moving platform (18) and three parallel parallelogram linkages, it is characterized in that described large arm drive motors (4) and forearm drive motors (10) and pitch regulation motor (8) are all arranged on pedestal (3) one end, and by the moving platform (18) described in described three parallel parallelogram linkage coordinated drive.
2. many parallelogram connection-rods parallel drive spray robot as claimed in claim 1, it is characterized in that described pedestal (3) below is provided with carrying trolley (1), trolley (1) can deliver on ground or along guide rail the translational degree of freedom that whole robot moves horizontally under the driving of power source (2).
3. many parallelogram connection-rods parallel drive spray robot as claimed in claim 1 or 2, characterized by further comprising a telescopic rod (16), connecting rod (14d) phase ball pivot is stretched out with one of above-mentioned three parallel parallelogram linkages in described telescopic rod (16) one end (16c), phase ball pivot between described telescopic rod (16) other end (16a) and the rod end (18b) of described moving platform (18), small machine and ball-screw are equipped with in described telescopic rod (16) inside, motor is fixed therein in side hollow pipe (16a), during driving, ball-screw drives that another root pipe is corresponding to be stretched out or retract, the change of length of telescopic bar realizes the free degree that swings of moving platform (18).
4. many parallelogram connection-rods parallel drive spray robot as claimed in claim 1 or 2, is characterized in that described three parallel parallelogram linkages are respectively: by a branch (12d), the first parallelogram connection-rod driving mechanism that between forearm (19) intermediate shaft hole (19a) and contiguous forearm (19) axle head (19b), part, I connecting rod (13), I crank (9) are formed of large arm (12) shift fork; The the second parallelogram connection-rod driving mechanism be made up of the side of another branch (12c) of large arm (12) shift fork, II crank (7), II connecting rod (11), triangular coupling rod (14); By triangular coupling rod (14) another side, the 3rd parallelogram connection-rod driving mechanism that between forearm (19) intermediate shaft hole (19a) and forearm (19) axle head (19a), part, moving platform (18) shaft portion, III connecting rod (15) are formed.
5. many parallelogram connection-rods parallel drive spray robot as claimed in claim 4, is characterized in that described large arm drive motors (4) drives large arm (12) the support rotary oscillation on pedestal (3); Described pitch regulation motor (8) drives the support rotary oscillation of II crank (7) on pedestal; Described forearm drive motors (10) drives the support rotary oscillation of I crank (9) on pedestal (3); Described moving platform (18) has perpendicular to two translational degree of freedom in dolly advance direction plane under the drive of described large arm (12) and described forearm (19); Under the drive of described III connecting rod (15), there is the rotational freedom that can realize pitching.
6. many parallelogram connection-rods parallel drive spray robot as claimed in claim 5, characterized by further comprising a telescopic rod (16), connecting rod (14d) phase ball pivot is stretched out with one of above-mentioned three parallel parallelogram linkages in described telescopic rod (16) one end (16c), phase ball pivot between described telescopic rod (16) other end (16a) and the rod end (18b) of described moving platform (18), small machine and ball-screw are equipped with in described telescopic rod (16) inside, motor is fixed therein in side hollow pipe (16a), during driving, ball-screw drives that another root pipe is corresponding to be stretched out or retract, the change of telescopic rod (16) length realizes the free degree that swings of moving platform (18).
7. many parallelogram connection-rods parallel drive spray robot as claimed in claim 4, is characterized in that the first described parallelogram connection-rod driving mechanism and the second described parallelogram connection-rod driving mechanism are connected together by bearing pin respectively by the large arm (12) of the shift fork shape shared.
8. many parallelogram connection-rods parallel drive spray robot as claimed in claim 4, is characterized in that the second described parallelogram connection-rod driving mechanism and the 3rd described parallelogram connection-rod driving mechanism are connected together respectively by common triangular coupling rod (14) different sides.
9. many parallelogram connection-rods parallel drive spray robot as claimed in claim 5, it is characterized in that described large arm drive motors (4) drives worm gear (6) rotary motion by worm screw (5), worm gear (6) rotational movement large arm (12) rotary motion.
10. many parallelogram connection-rods parallel drive spray robot as claimed in claim 6, it is characterized in that described large arm (12) is a bending shift fork shape, it collects axle head (12a) and is branched into two drive link (12c) and (12d), and bifurcated two end points (12b) of its large arm 12 are connected and are connected with triangular coupling rod (14) axis hole (14c) with described forearm (19) intermediate shaft hole (19a) by bearing pin respectively.
11. many parallelogram connection-rods parallel drive spray robots as claimed in claim 8, it is characterized in that described triangular coupling rod (14) comprises three axis holes (14a, 14b, 14c), its top axis hole (14c) with by bearing pin respectively with bifurcated two end points (12b) of its large arm (12), be connected with forearm (19) intermediate shaft hole (19a); Base axis hole (14a) is connected with II connecting rod (11) axis hole by bearing pin; Base another axis hole (14b) is connected with III connecting rod (15) axis hole by bearing pin; Stretches out a connecting rod (14d) in the middle of described triangular coupling rod (14), its with; Described telescopic rod (16) one end (16b) phase ball pivot.
12. many parallelogram connection-rods parallel drive spray robots as claimed in claim 8, characterized by further comprising a shower nozzle (17), described shower nozzle (17) is cemented on the coupling part (18a) of described moving platform (18).
13. many parallelogram connection-rods parallel drive spray robots as claimed in claim 12, it is characterized in that described moving platform (18) extends three connecting rods in mutually perpendicular direction, the rod end of every root connecting rod arranges three typed ball bearing pair (18b, 18c, 18d), two typed ball bearing pair (18d, 18c) be positioned at together diametrically, another typed ball bearing pair (18b) is positioned on the deviation post of the axis perpendicular with above-mentioned diameter, two typed ball bearing pair (18d, 18c) be connected with described forearm (19) axle head (19a) with described III connecting rod (15) respectively, and another typed ball bearing pair (18b) is connected with telescopic rod (16).
14. many parallelogram connection-rods parallel drive spray robots as described in claim 4 or 6, is characterized in that described large arm (12) is variable section structure, and the shift fork hollow structure of described large arm (12) arranges the fluid flow tube road of spraying.
15. many parallelogram connection-rods parallel drive spray robots as claimed in claim 4, is characterized in that the structure that described forearm (19) is variable cross-section, eliminate a part of material in the middle of it.
16. many parallelogram connection-rods parallel drive spray robots as claimed in claim 4, is characterized in that described I crank (9) is identical with the dimensional parameters of described II crank (7); The structure of described I connecting rod (13) is identical with the dimensional parameters of described II connecting rod (11), described III connecting rod (15).
17. many parallelogram connection-rods parallel drive spray robots as claimed in claim 1, is characterized in that three described parallelogram connection-rod place planes are parallel to each other.
18. many parallelogram connection-rods parallel drive spray robots as claimed in claim 5, all supporting structures that it is characterized in that on described pedestal (3) ensure that the pivot center coincidence conllinear of large arm (12), I crank (9), II crank (7).
19. many parallelogram connection-rods parallel drive spray robots as claimed in claim 17, it is characterized in that the forearm drive motors (10) on described pedestal (3) and pitch regulation motor (8) coaxial line layout, and large arm drive motors (4) is arranged on the axis vertical with above-mentioned coaxial space.
The robot of parallelogram connection-rod parallel drive more than 20. 1 kinds, adopts the structure of the many parallelogram connection-rods parallel drive spray robot as described in claim 1-19, and it is in the fields such as product carrying, Product Assembly, detection, fire-fighting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410098381.1A CN104923431A (en) | 2014-03-18 | 2014-03-18 | Spraying robot driven by multiple parallelogram links in parallel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410098381.1A CN104923431A (en) | 2014-03-18 | 2014-03-18 | Spraying robot driven by multiple parallelogram links in parallel |
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| CN104923431A true CN104923431A (en) | 2015-09-23 |
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