Bifurcation variations and motion-ruled-surface evolution of a novel Schatz linkage induced metamorphic mechanism

Bifurcation variations and motion-ruled-surface evolution of a novel Schatz linkage induced metamorphic mechanism
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新型 Schatz 连杆诱导变质机制的分叉变化和运动统治表面演化

DOI:
10.1016/j.mechmachtheory.2020.103867
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发表时间:
2020-08
影响因子:
5.2
通讯作者:
Yu Haoyong
Yu Haoyong
中科院分区:
工程技术1区
文献类型:
--
作者:
Kang Xi;Ma Xuesi;Dai Jian S.;Yu Haoyong

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本文提出了一种由Schatz链诱导的新型7R变态机构。该机构可以实现沙茨连杆机构两种装配构型之间的可重构切换,不需要拆卸和重组。该机构有4个不同的运动分支和12个分叉点。其中两个运动分支是沙茨连杆机构的两种装配构型,另外两个是两个不同的单自由度空间7R机构。机构的分叉变化由位形空间表示,该位形空间由闭环系统方程的数值方法得到。然后,通过一阶和二阶约束方程识别出12个分岔点。此外,还生成了连杆机构的运动直纹面,证明该机构有四个运动分支,可以通过另外两个运动分支从沙茨机构的一种装配构形切换到另一种装配构形。
This paper presents a novel 7R metamorphic mechanism induced by Schatz linkage. The mechanism can realize the reconfigurable switch between two assembly configurations of Schatz linkage without disassembly and reassembly. The mechanism has four different motion branches and twelve bifurcation points. Two of these motion branches are two assembly configurations of Schatz linkage, and the others are two different single degree-of-freedom spatial 7R mechanisms. Bifurcation variations of the mechanism are presented by the configuration space, which is obtained by using the numerical approach of closed-loop equations. Then, twelve bifurcation points are identified by first- and second-order constraint equations. Moreover, motion ruled surfaces of the coupler link are generated, which proves that the mechanism has four motion branches and can switch from one assembly configuration of Schatz linkage to the other assembly configuration through another two motion branches.
DOI: 10.1115/1.4041486
发表时间: 2018-11
期刊: Journal of Mechanisms and Robotics
影响因子: --
作者:
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通讯作者: Dai Jian S
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DOI: 10.1016/j.mechmachtheory.2018.05.001
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影响因子: 3.3
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