A Novel Family of Leaf-Type Compliant Joints: Combination of Two Isosceles-Trapezoidal Flexural Pivots

被引:23
|
作者
Pei, Xu [1 ]
Yu, Jingjun [1 ]
Zong, Guanghua [1 ]
Bi, Shusheng [1 ]
Hu, Yida [2 ]
机构
[1] Beihang Univ, Inst Robot, Beijing 100083, Peoples R China
[2] Univ Penn, Sch Med, Philadelphia, PA 19104 USA
基金
中国国家自然科学基金;
关键词
DESIGN;
D O I
10.1115/1.3046140
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The leaf-type isosceles-trapezoidal flexural (LITF) pivot consists of two compliant beams and two rigid bodies. For a single LITF pivot, the range of motion is small while the center-shift is relatively large. The capability of performance can be improved greatly by the combination of two LITF pivots. Base on the pseudorigid-body (PRB) model of a LITF pivot, a method to construct the double-LITF pivots is presented by regarding a single LITF pivot as a the configurable flexure module. The trends of the center-shift are mainly considered by using this method with the combination of two LIFT pivots. Eight types of double-LITF pivots are synthesized. Compared with the single LIFT pivot, the stroke becomes larger, and stiffness becomes smaller. Four of them have the increased center-shift. The other four have the decreased center-shift. Two of the double-LITF pivots are selected as the examples to explain the proposed method. The comparison between PRB model and finite element analysis result shows the validity and effectiveness of the method. [DOI: 10.1115/1.3046140]
引用
收藏
页码:1 / 6
页数:6
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