CN207104907U - A kind of SCARA motion parallel connection mechanisms with rectangular workspace - Google Patents
A kind of SCARA motion parallel connection mechanisms with rectangular workspace Download PDFInfo
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- CN207104907U CN207104907U CN201721167869.0U CN201721167869U CN207104907U CN 207104907 U CN207104907 U CN 207104907U CN 201721167869 U CN201721167869 U CN 201721167869U CN 207104907 U CN207104907 U CN 207104907U
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Abstract
A kind of SCARA motion parallel connection mechanisms with rectangular workspace, are related to parallel robot field.SCARA motion parallel connection mechanisms include fixed platform, motor reducer combination, motion platform, sub-platform and movement branched chain；Movement branched chain includes rotary pair, actuating arm, planar flexible spring and parallelogram sturcutre；Secondth, connected by the first sub-platform between the 4th side chain, and be connected with motion platform by revolute pair, connected between the first, the 3rd side chain by the second sub-platform, and be connected with motion platform by screw pair；The space parallel mechanism makes to move in space between two sub-platforms and produces relative motion vertically, so as to which SCARA motion parallel connection mechanisms realize the three-dimensional movement in space and the rotation of vertical direction by four active rotary pair input motions.The parallel institution is nonaxisymmetric structure, reduces floor space, can produce relatively long and narrow working space, is more bonded the distributed areas of pickup robot end effector.
Description
Technical field
The utility model belongs to parallel robot technical field, especially should towards packaging, assembling etc. and material pickup
A kind of SCARA motion parallel connection mechanisms with rectangular workspace.
Background technology
One four-freedom parallel mechanism for rotating SACRA motions of three movements and vertical direction in space can be achieved, have
Larger working space and the rigidity of structure, suitable for quick pickup work, larger commercial application potentiality is shown, and
The high-speed picking-up application of production in light industry line is applied to more and more widely.Except different types of structure end effector it
Outside, the four-degree-of-freedom high speed parallel robot occurred at present is more using similar to Patent No. US20090019960A1 mechanism
Full symmetric structure, ensure that the isotropism of parallel institution performance.This full symmetrical configuration determines that robot has post
The working space of shape, be advantageous to expand the pickup scope of robot.
On the other hand, it is most pickup operating mode under, that is, be picked object and riding position respectively it is discrete at two simultaneously
Arrange on parallel conveyer belt, the picking action of robot be generally confined within one it is relatively long and narrow and perpendicular to transmission tape motion direction
Space in, the space of this circumference causes the waste of hall space, virtually generates very important production
Cost.Based on this consideration, development structure is compact, the high speed parallel robot equipment of the actual pickup operating mode of installation fitting is for drop
Low production cost, increase and machine installation number have economic implications to improve production efficiency.
Utility model content
The purpose of this utility model is to take up an area installing space and increase and machine installation number to reduce robot, is proposed not
It is same as the topological structure of the full symmetric robot of tradition, there is provided a kind of high speed parallel machine with relatively long and narrow working space
Structure.
The technical solution of the utility model:
A kind of SCARA motion parallel connection mechanisms with rectangular workspace, it is characterised in that including fixed platform 1, motor
Reducer group 2, motion platform 7, sub-platform and movement branched chain；
Described movement branched chain is arranged between fixed platform 1 and motion platform 7, totally four, has identical structure；The
One movement branched chain 12 and the second movement branched chain 13 are arranged in the side of fixed platform 1, the 3rd movement branched chain 14, the 4th movement branched chain
15 are arranged in the opposite side of fixed platform 1, into symmetric configuration；
Described movement branched chain includes rotary pair, actuating arm 3, planar flexible spring 5 and the parallelogram of active drive
Component；Rotary pair is arranged at the both ends of fixed platform 1, and the rotation axis with two rotary pairs of one end is parallel to each other, and
It is in the horizontal 45° angle, the upper end connection motor reducer combination 2 of rotary pair, lower end connection actuating arm 3, four actuating arms 3
Rectangle mounting arrangements, the end of actuating arm 3 is by being fixedly connected with the end of a spherical pair 4 of parallelogram component；
Described parallelogram component is formed by connecting by two passive rod members 6 and four spherical pairs 4, planar flexible spring
5 are arranged between two passive rod members 6, for constraining two passive rod members 6, appear as the forms of motion of universal joint；It is flat
Row quadrangle component is connected by another end of spherical pair 4 with sub-platform；Wherein, the second movement branched chain 13 and the 4th movement branched chain
The parallelogram component of 15 connections is connected to the both ends of the first sub-platform 8；First movement branched chain 12 and the 3rd motion branch
The parallelogram component that chain 14 connects is connected to the both ends of the second sub-platform 9；First sub-platform 8 and the second sub-platform 9
Into cross structure, the first sub-platform 8 is connected with motion platform 7 by revolute pair, and the second sub-platform 9 passes through spiral shell with motion platform 7
Rotation is secondary to be connected；
Actuator is arranged at the bottom of motion platform 7, realizes that pick-and-place acts；
An axis parallel with rotary pair be present in described spherical pair 4；SCARA motion parallel connection mechanisms pass through four revolutions
After auxiliary input motion, two sub-platforms is moved in space and produce relative motion vertically；SCARA motions are in parallel
The working space of mechanism is rectangular workspace 11 or Work space 10.
The beneficial effects of the utility model：A kind of SCARA motions with rectangular workspace of the present utility model are in parallel
Mechanism, its asymmetric mechanism make it have relatively long and narrow working space, and actual pickup work is more bonded in installation
Condition, beneficial to reducing space to reduce production cost, increase and machine installation number to improve production efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of mechanism described in the utility model.
Fig. 2 is motion platform structural representation of the present utility model.
Fig. 3 (a) is a kind of form of the working space of mechanism described in the utility model.
Fig. 3 (b) is a kind of form of the working space of mechanism described in the utility model.
In figure：1 fixed platform；2 motor reducers combine；3 actuating arms；4 spherical pairs；5 planar flexible springs；6 by lever
Part；7 motion platforms；8 first sub-platforms；9 second sub-platforms；10 Work spaces；11 rectangular workspaces；12 first motions
Side chain；13 second movement branched chains；14 the 3rd movement branched chains；15 the 4th movement branched chains.
Embodiment
A kind of SCARA motion parallel connection mechanisms with rectangular workspace of the present utility model are detailed in conjunction with the accompanying drawings and embodiments
Carefully state clearly as follows：
The utility model proposes a kind of SCARA motion parallel connection mechanisms with rectangular workspace, including fixed platform
1st, can install actuator motion platform 7, connection two platforms between there is mutually isostructural four movement branched chains.
Each movement branched chain of the utility model mechanism includes the rotary pair R, actuating arm 3, use of an active drive
The parallelogram sturcutre that four spherical pair S4 connections and plane flexure spring 5 constrain；Each parallelogram sturcutre is by driving
Four ball pivots 4 and two passive rod members 6 on arm 3 and sub-platform 8 or 9 are formed.
Four actuating arms 3 of the utility model mechanism combine 2 drivings, the rectangular cloth of its installation site by motor reducer
Put, two active rotary pair R of homonymy rotation axis is parallel to each other and with the horizontal 45° angle.
The utility model mechanism the 2nd II, connected by a sub-platform 8 between the 4th IV side chain, and with execution can be installed
The motion platform 7 of device is connected by revolute pair R, is connected between the one I, the 3rd III side chain by a sub-platform 9, and flat with moving
Platform 7 is connected by screw pair H.
The utility model space parallel mechanism is made between two sub-platforms in sky by four active rotary pair input motions
Interior movement simultaneously produces relative motion vertically, realizes the three-dimensional movement in space and the rotation of vertical direction.
Claims (1)
1. a kind of SCARA motion parallel connection mechanisms with rectangular workspace, it is characterised in that including fixed platform (1), motor
Reducer group (2), motion platform (7), sub-platform and movement branched chain；
Described movement branched chain is arranged between fixed platform (1) and motion platform (7), totally four, has identical structure；The
One movement branched chain (12) and the second movement branched chain (13) are arranged in the side of fixed platform (1), the 3rd movement branched chain (14), the 4th
Movement branched chain (15) is arranged in the opposite side of fixed platform (1), into symmetric configuration；
Described movement branched chain includes rotary pair, actuating arm (3), planar flexible spring (5) and the parallelogram of active drive
Component；Rotary pair is arranged at the both ends of fixed platform (1), and the rotation axis with two rotary pairs of one end is parallel to each other,
And with the horizontal 45° angle, the upper end connection motor reducer combination (2) of rotary pair, lower end connection actuating arm (3), four drives
Swing arm (3) rectangular mounting arrangements, the end of actuating arm (3) is by being fixedly connected with the spherical pair (4) of parallelogram component
End；
Described parallelogram component is formed by connecting by two passive rod members (6) and four spherical pairs (4), planar flexible spring
(5) it is arranged between two passive rod members (6), for constraining two passive rod members (6), appears as the motion shape of universal joint
Formula；Being held by another spherical pair (4) for parallelogram component is connected with sub-platform；Wherein, the second movement branched chain (13) and
The parallelogram component of four movement branched chains (15) connection is connected to the both ends of the first sub-platform (8)；First movement branched chain
(12) and the parallelogram component of the 3rd movement branched chain (14) connection is connected to the both ends of the second sub-platform (9)；First
Sub-platform (8) is connected into cross structure, the first sub-platform (8) with the second sub-platform (9) with motion platform (7) by revolute pair,
Second sub-platform (9) is connected with motion platform (7) by screw pair；
Actuator is arranged at motion platform (7) bottom, realizes that pick-and-place acts；
An axis parallel with rotary pair be present in described spherical pair (4)；SCARA motion parallel connection mechanisms pass through four rotary pairs
After input motion, two sub-platforms is moved in space and produce relative motion vertically；SCARA moves parallel machine
The working space of structure is rectangular workspace (11) or Work space (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721167869.0U CN207104907U (en) | 2017-09-15 | 2017-09-15 | A kind of SCARA motion parallel connection mechanisms with rectangular workspace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721167869.0U CN207104907U (en) | 2017-09-15 | 2017-09-15 | A kind of SCARA motion parallel connection mechanisms with rectangular workspace |
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| Publication Number | Publication Date |
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| CN207104907U true CN207104907U (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721167869.0U Expired - Fee Related CN207104907U (en) | 2017-09-15 | 2017-09-15 | A kind of SCARA motion parallel connection mechanisms with rectangular workspace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107486841A (en) * | 2017-09-15 | 2017-12-19 | 大连理工大学 | A kind of SCARA motion parallel connection mechanisms with rectangular workspace |
| CN109531556A (en) * | 2018-12-26 | 2019-03-29 | 清华大学 | Four-degree-of-freedom cylindrical coordinates parallel robot |
-
2017
- 2017-09-15 CN CN201721167869.0U patent/CN207104907U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107486841A (en) * | 2017-09-15 | 2017-12-19 | 大连理工大学 | A kind of SCARA motion parallel connection mechanisms with rectangular workspace |
| CN109531556A (en) * | 2018-12-26 | 2019-03-29 | 清华大学 | Four-degree-of-freedom cylindrical coordinates parallel robot |
| CN109531556B (en) * | 2018-12-26 | 2021-09-24 | 清华大学 | Four-freedom-degree cylindrical coordinate parallel robot |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20200915 |