Title:
THREE-DEGREES-OF-FREEDOM PARALLEL MECHANISM HAVING AN ARC-SHAPED MOVEMENT PAIR
Document Type and Number:
WIPO Patent Application WO/2018/195762
Kind Code:
A1
Abstract:
Provided is a three-degrees-of-freedom parallel mechanism having an arc-shaped movement pair, comprising a fixed platform (110), a movable platform (120) and three arc-shaped support linkages (130) provided between the fixed platform (110) and the movable platform (120). Each of the arc-shaped support linkages (130) comprises a first arc-shaped connecting rod (132) and a second arc-shaped connecting rod (134) sharing the same arc centre. One end of the first arc-shaped connecting rod (132) is connected to the fixed platform (110) using a revolute pair (136). One end of the second arc-shaped connecting rod (134) is provided in a cavity of the other end of the first arc-shaped connecting rod (132), and the second arc-shaped connecting rod (134) can perform a reciprocating motion in a tangential direction of a circular arc of the first arc-shaped connecting rod (132). The other end of the second arc-shaped connecting rod (134) is connected to the movable platform (120) using a ball joint (138). Axes of the three revolute pairs (136) of the three arc-shaped support linkages (130) coincide with each other, and are perpendicular to the fixed platform. The movable platform (120) of the parallel mechanism rotates around the X-axis, Y-axis and Z-axis of the coordinate system centred in the arc centre of the three arc-shaped support linkages (130), wherein the rotation of the movable platform (120) around the Z-axis has a decoupling property compared with when same rotates in the other two directions.
Inventors:
ZHAO GUORU (CN)
WANG YONGFENG (CN)
WANG YONGFENG (CN)
Application Number:
PCT/CN2017/081823
Publication Date:
November 01, 2018
Filing Date:
April 25, 2017
Export Citation:
Assignee:
SHENZHEN INST OF ADV TECH CAS (CN)
International Classes:
B25J17/00; B25J9/08
Foreign References:
| CN104827463A | 2015-08-12 | |||
| CN101244560A | 2008-08-20 | |||
| CN102528817A | 2012-07-04 | |||
| CN206066431U | 2017-04-05 | |||
| TW201121735A | 2011-07-01 |
Attorney, Agent or Firm:
SHENZHEN KEJIN INTELLECTUAL PROPERTY OFFICE (CN)
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