Design of an adjustable cam based constant force mechanism

被引：35
作者：
Liu, Yang [1 ]
Yu, De-ping [1 ]
Yao, Jin [1 ]
机构：
[1] Sichuan Univ, Sch Mfg Sci & Engn, Chengdu 610065, Peoples R China
来源：
MECHANISM AND MACHINE THEORY | 2016年 / 103卷
关键词：
Adjustable constant force mechanism; Cam mechanism; Negative stiffness; NEGATIVE STIFFNESS ELEMENTS; MATING UNCERTAINTY; OPTIMIZATION; OUTPUT;
D O I：
10.1016/j.mechmachtheory.2016.04.014
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A novel adjustable constant force mechanism (ACFM), which mainly consists of a linear spring and a cam mechanism (CM), has been proposed to passively regulate contact force. The CM is a linear negative stiffness mechanism and the constant force can be derived by paralleling the CM and the linear spring. To obtain the linear negative stiffness characteristic of the CM, the cam profile has been designed in detail. The magnitude of the constant force can be adjusted by preloading the linear spring. The mathematical model of the proposed ACFM, which doesn't contain complicated flexible members, is simple and accurate. To verify feasibility of the theoretical design procedure of the cam profile, a simulation of the ACFM has been carried out in virtual simulation software and the simulation results are consistent with the theoretical design procedure. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：85 / 97
页数：13
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