Type Synthesis for 4-DOF Parallel Press Mechanism Using GF Set Theory

被引：0

作者：

HE Jun ^{[1
]}

GAO Feng ^{[1
]}

MENG Xiangdun ^{[1
]}

GUO Weizhong ^{[1
]}

机构：

[1] State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University

来源：

Chinese Journal of Mechanical Engineering | 2015年 / 04期

基金：

中国国家自然科学基金;

关键词：

parallel mechanism; type synthesis; GF Set; type evaluation; press mechanism;

D O I：

暂无

中图分类号：

TH112 [机构学];

学科分类号：

080203 ;

摘要：

Parallel mechanisms is used in the large capacity servo press to avoid the over-constraint of the traditional redundant actuation. Currently, the researches mainly focus on the performance analysis for some specific parallel press mechanisms. However, the type synthesis and evaluation of parallel press mechanisms is seldom studied, especially for the four degrees of freedom(DOF) press mechanisms. The type synthesis of 4-DOF parallel press mechanisms is carried out based on the generalized function(GF) set theory. Five design criteria of 4-DOF parallel press mechanisms are firstly proposed. The general procedure of type synthesis of parallel press mechanisms is obtained, which includes number synthesis, symmetrical synthesis of constraint GF sets, decomposition of motion GF sets and design of limbs. Nine combinations of constraint GF sets of 4-DOF parallel press mechanisms, ten combinations of GF sets of active limbs, and eleven combinations of GF sets of passive limbs are synthesized. Thirty-eight kinds of press mechanisms are presented and then different structures of kinematic limbs are designed. Finally, the geometrical constraint complexity(GCC), kinematic pair complexity(KPC), and type complexity(TC) are proposed to evaluate the press types and the optimal press type is achieved. The general methodologies of type synthesis and evaluation for parallel press mechanism are suggested.

引用

页码：851 / 859

页数：9

共 15 条

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