CN203210376U - Parallel robot and parallelogram rod group thereof - Google Patents
Parallel robot and parallelogram rod group thereof Download PDFInfo
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- CN203210376U CN203210376U CN 201320209685 CN201320209685U CN203210376U CN 203210376 U CN203210376 U CN 203210376U CN 201320209685 CN201320209685 CN 201320209685 CN 201320209685 U CN201320209685 U CN 201320209685U CN 203210376 U CN203210376 U CN 203210376U
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Abstract
The utility model discloses a parallel robot and parallelogram rod groups thereof, and belongs to the field of industrial robots. The parallel robot comprises a static platform, a mobile platform and three branch chains mounted between the static platform and the mobile platform in parallel, wherein the three branch chains include a first branch chain, a second branch chain and a third branch chain which have the same structures; the first branch chain is provided with a first parallelogram rod group; and the first parallelogram rod group comprises a first rotating shaft, a first driven lever, a second rotating shaft, a second driven lever, a first revolute pair and a second revolute pair which are in sequential connection, the first revolute pair is arranged on the first rotating shaft, and the second revolute pair is arranged on the second rotating shaft; tension sleeves are symmetrically arranged at two ends of the first rotating shaft, and the end surface of the first rotating shaft is attached to the end surface of the first revolute pair. According to the parallel robot and the parallelogram rod groups thereof, two-dimensional movement of the mobile platform at the tail end is achieved through the three branch chains which are arranged spatially, integral rigidity of the mechanism is effectively improved, and meanwhile, the parallelogram rod groups with accurate structures are arranged, so that the operation of the mechanism is stable.
Description
Technical field
The utility model relates to the industrial robot field, particularly a kind of parallel robot and parallelogram levers group thereof.
Background technology
Parallel institution (Parallel Mechanism, be called for short PM), can be defined as moving platform and fixed platform by at least two independently kinematic chain be connected, have two or more frees degree, and an a kind of closed loop mechanism that drives with parallel way.
Parallel robot and traditional industry are compared relation and the serial machine people that philosophy is the unity of opposites with the serial machine people, and parallel robot has following characteristics:
(1) no accumulated error, precision is higher;
(2) drive unit can place on the fixed platform or near the position of fixed platform, motion parts is in light weight like this, the speed height, and dynamic response is good;
(3) compact conformation, the rigidity height, bearing capacity is big;
(4) parallel institution of symmetry has isotropism preferably fully;
(5) working space is less.
According to these characteristics, parallel robot need not obtain extensive use in the field of very big working space in the high rigidity of needs, high accuracy or big load.
Light industry ubiquities such as electronics, medicine, packing are to the demand of material high speed pick-and-place operation.Existing parallel institution generally comprises frame, moving platform and two pairs of side chains; In frame two servomotors are installed, moving platform is connected with frame by two branches, forms parallel closed loop structure; Two side chains respectively contain two parallel-crank mechanisms, respectively as group of drive rods and follower lever group, adopt turning joint to connect between each movement parts fully; Adopt the parallelogram branched structure to realize the two-dimensional translation of moving platform.
In realizing process of the present utility model, the inventor finds that there is following problem at least in prior art:
Existing mechanism has limitation, and every side chain of mechanism contains two groups of parallel-crank mechanisms, and structure is nisi parallelogram, vibrations can occur in motion process, and transient impact; Each moving link is all in same plane or be parallel to this plane, and mechanism's rigidity on perpendicular to the plane of movement direction is relatively poor.
The utility model content
In order to solve prior art problems, the utility model provides a kind of parallel robot and parallelogram levers group thereof.Described technical scheme is as follows:
On the one hand, the utility model provides a kind of parallel robot, and described parallel robot comprises silent flatform, moving platform, is installed in parallel three side chains between described silent flatform and described moving platform; Described three side chains are made of the first identical side chain of structure, second side chain and the 3rd side chain; Described first side chain has the first parallelogram levers group;
The described first parallelogram levers group comprises first rotating shaft, first follower lever, second rotating shaft, second follower lever that are linked in sequence successively, be arranged at first revolute pair in described first rotating shaft, be arranged at second revolute pair in described second rotating shaft;
The described first rotating shaft two ends are symmetrically arranged with the tensioner cover, and the end face of described first rotating shaft fits in the end face of described first revolute pair.
Particularly, described first rotating shaft and described second rotating shaft opposing parallel setting, described first follower lever and the described second follower lever opposing parallel arrange.
Particularly, described first rotating shaft and described first revolute pair are formed the A1 limit, and described second rotating shaft and described second revolute pair are formed the A2 limit;
Described first follower lever and described second follower lever are respectively B1 limit and B2 limit;
Described A1 limit is parallel and equal with described A2 limit;
Described B1 limit is parallel and equal with described B2 limit.
Particularly, the described first parallelogram levers group, one end is connected with first driving lever by described first revolute pair, and the other end is connected with the moving platform body by described second revolute pair;
The axis of the axis of described first revolute pair and described second revolute pair is parallel to each other;
Described first rotating shaft is rotationally connected by described first revolute pair and described first driving lever, and described second rotating shaft is rotationally connected by described second revolute pair and described moving platform.
Further, described first follower lever and the described second follower lever structure are identical;
Described first follower lever, one end is provided with first yoke, second yoke, is arranged at the joint pin between described first yoke and described second yoke; The described first follower lever other end is provided with identical therewith structure.
Further, described first side chain, described second side chain and described the 3rd side chain one end are connected first drive unit, second drive unit, the 3rd drive unit respectively, and the other end is hinged with three bodies of moving platform respectively.
Particularly, described second side chain comprises second driving lever and the second parallelogram levers group;
Described the 3rd side chain comprises the 3rd driving lever and the 3rd parallelogram levers group.
Particularly, described silent flatform is provided with first drive unit, second drive unit and the 3rd drive unit, and it is mutually 120 ° in twos;
Described first drive unit, described second drive unit and described the 3rd drive unit are servo motor;
Described moving platform has pedestal, extends outward three bodies along described pedestal, is mutually 120 ° in twos; Described pedestal is provided with end effector.
On the other hand, the utility model embodiment provides a kind of parallelogram levers group, and the described first parallelogram levers group comprises first rotating shaft, first follower lever, second rotating shaft, second follower lever that are linked in sequence successively, be arranged at first revolute pair in described first rotating shaft, be arranged at second revolute pair in described second rotating shaft;
Described first rotating shaft and the setting of the described second rotating shaft opposing parallel, described first follower lever and the described second follower lever opposing parallel arrange;
The described first rotating shaft two ends are symmetrically arranged with the tensioner cover, and the end face of described first rotating shaft pushes up the end face of described first revolute pair.
Particularly, described first rotating shaft and described first revolute pair are formed the A1 limit, and described second rotating shaft and described second revolute pair are formed the A2 limit;
Described first follower lever and described second follower lever are respectively B1 limit and B2 limit;
Described A1 limit is parallel and equal with described A2 limit;
Described B1 limit is parallel and equal with described B2 limit.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
Realize that by three side chains that the space is arranged the two dimension of terminal moving platform moves, effectively improve mechanism's integral rigidity, structure parallelogram levers group accurately is set simultaneously, make mechanism operate steadily.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the parallel robot structural representation that the utility model embodiment provides;
Fig. 2 is the parallel robot A-A plane that the utility model embodiment provides;
Fig. 3 is the I portion structure cutaway view among Fig. 2.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model embodiment is described in further detail.
The utility model embodiment provides a kind of parallel robot and parallelogram levers group thereof, referring to Fig. 1, described parallel robot comprises silent flatform 1, and the moving platform 2 that is complementary of silent flatform 1, is installed in parallel three movement branched chain between silent flatform 1 and moving platform 2.
Particularly, silent flatform 1 is provided with first drive unit 11, second drive unit 12 and the 3rd drive unit 13.Wherein, first drive unit 11, second drive unit 12, the 3rd drive unit 13 are mutually 120 ° and are installed on silent flatform 1.Angle is identical between any two for it, can make silent flatform 1 stressed more even, and kinematic accuracy improves, error reduces.The motion that first drive unit 11, second drive unit 12, the 3rd drive unit 13 provide can be adopted the servomotor shown in figure l for rotating, and accurately controls thereby can rotatablely move to it by control device.
Particularly, moving platform 2 has pedestal 21, extends outward three bodies 22 along pedestal 21, and it is mutually 120 ° between any two.Pedestal 21 is provided with end effector 20, connects pedestal 21 and end effector 20 by a technology axle.Technology axle one end connects the centre bore of pedestal 21, the other end connects the centre bore of end effector 20, make the pedestal center coaxial with the end effector center, thereby the initial pivot angle that has guaranteed three driving levers is on all four, can the dismantle processes axle behind fixed drive axle and driving lever.End effector 20 can be jaw, sucker etc., and in conjunction with different end effector 20, parallel robot can correspondingly be finished multiple work such as carrying and location.
Particularly, three movement branched chain are made of the first identical side chain 3 of structure, second side chain 4 and the 3rd side chain 5; First side chain 3, second side chain 4 and the 3rd side chain 5 become by driving lever plane, place five equilibrium with the parallelogram levers fabric; First side chain 3, second side chain 4 and the 3rd side chain 5 one ends are connected the driving shaft of drive unit, and the other end and moving platform 2 are hinged.
Be example with first side chain 3 only below, the mechanism of each side chain is elaborated.
Further, first side chain 3 is made up of first driving lever 30, the first parallelogram levers group 31 that is arranged between first driving lever 30 and the moving platform 2.
At length, the first parallelogram levers group 31 comprises first rotating shaft 311, second rotating shaft 312 that is oppositely arranged, and first follower lever 313 that is oppositely arranged, second follower lever 314.First rotating shaft 311 and second rotating shaft, 312 physical dimensions are identical.First follower lever 313 and second follower lever, 314 physical dimensions are identical.
Further, referring to Fig. 3, first rotating shaft, 311 two ends are symmetrically arranged with tensioner cover 311a, and first rotating shaft 311 is connected with tensioner cover 311a by nut 311b.The end face of first rotating shaft 311 fits in the end face of first revolute pair 32 by the tensioner cover, is positioned by plane, first follower lever, 313 place, oppositely beats screw, fastening nut again.Thereby make the swelling casing pressure bearing pin that has cone structure, with the frictional force fixed pin shaft; The mounting means of opposite side is identical therewith.Guarantee that the A1 limit is parallel and equal with the A2 limit, the parallel and equal structure on B1 limit, B2 limit is based on parallel and equal structural in A1 limit, A2 limit.Wherein, first rotating shaft 311 and first revolute pair 32 are formed the A1 limit, and second rotating shaft 312 and second revolute pair 33 are formed the A2 limit; B1 limit, B2 limit are respectively first follower lever 313 and second follower lever 314.Two groups of opposite side are parallel and equal, and making parallelogram levers group 31 is an accurate parallelogram sturcutre.If structure is nisi parallelogram, in motion process vibrations can appear then, and transient impact.
At length, first follower lever, 313 1 ends are provided with the first yoke 313a, the second yoke 313b, are arranged at the joint pin 313c between the first yoke 313a and the second yoke 313b.First follower lever, 313 other ends are provided with identical therewith structure.
Wherein, first driving lever, 30 1 ends link to each other with first drive unit 11, and the other end links to each other with an end of first follower lever 313 by joint pin 313c.First follower lever, 313 other ends link to each other with moving platform 2 by joint pin.
Wherein, the first parallelogram levers group, 31 1 ends are connected with first driving lever 30 by first revolute pair 32, and the other end is connected with moving platform 2 by second revolute pair 33.The axis of the axis of first revolute pair 32 and second revolute pair 33 is parallel to each other.First drive unit 11 is used for output and rotatablely moves, so that first driving lever 30 rotates.First rotating shaft 311 is rotationally connected by first revolute pair 32 and first driving lever 30, and second rotating shaft 312 is rotationally connected with moving platform 2 by second revolute pair 33.
Wherein, second side chain 4 comprises second driving lever 40 and the second parallelogram levers group 41; The 3rd side chain 5 comprises the 3rd driving lever 50 and the 3rd parallelogram levers group 51.
Referring to Fig. 2, first side chain 3, second side chain 4 and the 3rd side chain 5 all are positioned at the A-A plane, are mutually 120 ° of five equilibrium A-A planes in twos.Moving platform 2 drives end effector 20 can pass through first drive unit 11, second drive unit 12 and the 3rd drive unit 13 with respect to the motion of silent flatform 1 rotation realization.First drive unit 11, second drive unit 12 and the 3rd drive unit 13 provide when driving, and moving platform 2 will be realized two-degree of freedom translation in the A-A plane.
Below introduce the course of action of the parallel robot of the utility model embodiment in detail.Parallel robot can be realized below illustrating along the rotatablely moving of solid axes Z.
When first drive unit 11 that is connected with first side chain 3, second side chain 4 and the 3rd side chain 5, second drive unit 12, the 3rd drive unit 13 drove the first corresponding driving lever 30, second driving lever 40 and the 3rd driving lever 50 respectively and move simultaneously, moving platform 2 was done translational motion along the Z axle.
Ball pair of the prior art or Hooke's hinge can be simplified the structure of parallel robot, and reduce manufacturing cost.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is: realize that by three side chains that the space is arranged the two dimension of terminal moving platform moves, effectively improve mechanism's integral rigidity, structure parallelogram levers group accurately is set simultaneously, makes mechanism operate steadily.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. a parallel robot comprises silent flatform, moving platform, is installed in parallel three side chains between described silent flatform and described moving platform; Described three side chains are made of the first identical side chain of structure, second side chain and the 3rd side chain; Described first side chain has the first parallelogram levers group; It is characterized in that,
The described first parallelogram levers group comprises first rotating shaft, first follower lever, second rotating shaft, second follower lever that are linked in sequence successively, be arranged at first revolute pair in described first rotating shaft, be arranged at second revolute pair in described second rotating shaft;
The described first rotating shaft two ends are symmetrically arranged with the tensioner cover, and the end face of described first rotating shaft fits in the end face of described first revolute pair.
2. parallel robot according to claim 1 is characterized in that,
Described first rotating shaft and the setting of the described second rotating shaft opposing parallel, described first follower lever and the described second follower lever opposing parallel arrange.
3. parallel robot according to claim 1 is characterized in that,
Described first rotating shaft and described first revolute pair are formed the A1 limit, and described second rotating shaft and described second revolute pair are formed the A2 limit;
Described first follower lever and described second follower lever are respectively B1 limit and B2 limit;
Described A1 limit is parallel and equal with described A2 limit;
Described B1 limit is parallel and equal with described B2 limit.
4. parallel robot according to claim 1 is characterized in that,
The described first parallelogram levers group, one end is connected with first driving lever by described first revolute pair, and the other end is connected with the moving platform body by described second revolute pair;
The axis of the axis of described first revolute pair and described second revolute pair is parallel to each other.
5. parallel robot according to claim 1 and 2 is characterized in that,
Described first follower lever and the described second follower lever structure are identical;
Described first follower lever, one end is provided with first yoke, second yoke, is arranged at the joint pin between described first yoke and described second yoke; The described first follower lever other end is provided with identical therewith structure.
6. parallel robot according to claim 1 is characterized in that,
Described first side chain, described second side chain and described the 3rd side chain one end are connected first drive unit, second drive unit, the 3rd drive unit respectively, and the other end is hinged with three bodies of moving platform respectively.
7. according to claim 1 or 6 described parallel robots, it is characterized in that,
Described second side chain comprises second driving lever and the second parallelogram levers group;
Described the 3rd side chain comprises the 3rd driving lever and the 3rd parallelogram levers group.
8. parallel robot according to claim 1 is characterized in that,
Described silent flatform is provided with first drive unit, second drive unit and the 3rd drive unit, and it is mutually 120 ° in twos;
Described first drive unit, described second drive unit and described the 3rd drive unit are servo motor;
Described moving platform has pedestal, extends outward three bodies along described pedestal, is mutually 120 ° in twos; Described pedestal is provided with end effector.
9. a parallelogram levers group is characterized in that,
The described first parallelogram levers group comprises first rotating shaft, first follower lever, second rotating shaft, second follower lever that are linked in sequence successively, be arranged at first revolute pair in described first rotating shaft, be arranged at second revolute pair in described second rotating shaft;
Described first rotating shaft and the setting of the described second rotating shaft opposing parallel, described first follower lever and the described second follower lever opposing parallel arrange;
The described first rotating shaft two ends are symmetrically arranged with the tensioner cover, and the end face of described first rotating shaft pushes up the end face of described first revolute pair.
10. parallelogram levers group according to claim 9 is characterized in that,
Described first rotating shaft and described first revolute pair are formed the A1 limit, and described second rotating shaft and described second revolute pair are formed the A2 limit;
Described first follower lever and described second follower lever are respectively B1 limit and B2 limit;
Described A1 limit is parallel and equal with described A2 limit;
Described B1 limit is parallel and equal with described B2 limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320209685 CN203210376U (en) | 2013-04-23 | 2013-04-23 | Parallel robot and parallelogram rod group thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320209685 CN203210376U (en) | 2013-04-23 | 2013-04-23 | Parallel robot and parallelogram rod group thereof |
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| CN203210376U true CN203210376U (en) | 2013-09-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231371A (en) * | 2013-04-23 | 2013-08-07 | 广州中国科学院先进技术研究所 | Parallel robot and parallelogram rod group thereof |
| CN105150213A (en) * | 2015-08-03 | 2015-12-16 | 吉林大学 | Multifunctional clamping mechanical hand |
-
2013
- 2013-04-23 CN CN 201320209685 patent/CN203210376U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231371A (en) * | 2013-04-23 | 2013-08-07 | 广州中国科学院先进技术研究所 | Parallel robot and parallelogram rod group thereof |
| CN103231371B (en) * | 2013-04-23 | 2015-10-14 | 广州中国科学院先进技术研究所 | Parallel robot and parallelogram levers group thereof |
| CN105150213A (en) * | 2015-08-03 | 2015-12-16 | 吉林大学 | Multifunctional clamping mechanical hand |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170406 Address after: 518000 Guangdong city of Shenzhen province Qianhai Shenzhen Hong Kong cooperation zone before Bay Road No. 1 building 201 room A Patentee after: SHENZHEN CAS DERUI INTELLIGENT TECH Co.,Ltd. Address before: 511458 Nansha District Haibin Road, Guangdong, China, No. 1121, No. Patentee before: GUANGZHOU INSTITUTE OF ADVANCED TECHNOLOGY, CHINESE ACADEMY OF SCIENCES |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
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| CX01 | Expiry of patent term |