Geometric analysis of coupler-link mobility and circuits for planar four-bar linkages

被引：10
|
作者：
Bai, Shaoping [1 ]
机构：
[1] Aalborg Univ, Dept Mech & Mfg Engn, Aalborg, Denmark
来源：
MECHANISM AND MACHINE THEORY | 2017年 / 118卷
关键词：
Four-bar linkage mobility analysis; Number of circuits; Range of rotation; Turning points; Constraint triangle;
D O I：
10.1016/j.mechmachtheory.2017.07.019
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The problem of mobility analysis of planar four-bar linkages is revisited. The mobility is analyzed in terms of the range of coupler angle by a geometric approach, with a special interest on its full rotatability when the linkage is driven by the coupler link. A constraint triangle which characterizes the movement of the coupler link is constructed. By virtue of the constraint triangle, a new formulation on the couple curve rotation is derived, upon which the ranges of coupler angle are determined and the turning points are identified. Moreover, with the range of coupler angle, the number of circuits is determined. Examples are included to demonstrate the mobility analysis with the new approach. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：53 / 64
页数：12
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