Abstract

Most parallel mechanisms (PMs) encountered today have a common disadvantage, i.e., their low rotational capability. In order to develop PMs with high rotational capability, a family of novel manipulators with one or two dimensional rotations is proposed. The planar one-rotational one-translational (1R1T) and one-rotational two-translational (1R2T) PMs evolved from the crank-and-rocker mechanism (CRM) are presented by means of Lie group theory. A spatial 2R1T PM and a 2R parallel moving platform with bifurcated large-angle rotations are proposed by orthogonal combination of the RRRR limbs. According to the product principle of the displacement group theory, a hybrid 2R3T mechanism in possession of bifurcated motion is obtained by connecting the 2R parallel moving platform with a parallel part, which is constructed by four 3T1R kinematic chains. The presented manipulators possess high rotational capability. The proposed research enriches the family of spatial mechanisms and the construction method provides an instruction to design more complex mechanisms.

Details

Title
Structural Synthesis of Parallel Mechanisms with High Rotational Capability
Author
Xiao-Dong, Jin 1 ; Yue-Fa, Fang 1 ; Guo, Sheng 1 ; Hai-Bo, Qu 1 

 Beijing Jiaotong University, School of Mechanical, Electronic and Control Engineering, Beijing, China (GRID:grid.181531.f) (ISNI:0000 0004 1789 9622) 
Publication year
2018
Publication date
Dec 2018
Publisher
Springer Nature B.V.
ISSN
10009345
e-ISSN
21928258
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2511602510
Copyright
© The Author(s) 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.