文档介绍：Mechanism and Machine Theory 44 (2009) 896–911
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Mechanism and Machine Theory
journal homepage: ate/mechmt
Configuration synthesis of mechanisms with variable topologies
Hong-Sen Yan *, Chen-Hsiung Kang
Department of Mechanical Engineering, National Cheng Kung University, 1, University Road, Tainan 70101, Taiwan, ROC
article info abstract
Article history: A mechanism with multiple topological structures during the operation process is called a
Received 4 August 2007 mechanism with variable topologies (MVT) or is called a variable chain. The kinematic
Received in revised form 18 June 2008 joints whose types and/or motion orientations are changeable during the operation process
Accepted 22 June 2008
of an MVT are called the variable joints. According to the fundamental concepts, simplified
Available online 8 August 2008
unified graph, coordinate sequence, and mobility criterion at each stage, a design method-
ology is proposed for the configuration synthesis of MVTs. Fundamental synthesizing cor-
Keywords:
ollaries are established first. The concept of the simplified unified graph that represents
Mechanisms with variable topologies
topological changes in an MVT is used to address the configurations of MVTs. A type of
Variable joints
Configuration synthesis one step push-button stopper locks is used as illustrative examples.
Mechanical lock Ó 2008 Elsevier Ltd. All rights reserved.
1. Introduction
Mechanisms with multiple topologies during operation process, such as metamorphic mechanisms, one step push-button
locks with variable passwords, and automatic steel clamping and sawing mechanisms, are called mechanisms with variable
topologies (MVTs), and their corresponding chains are called variable chains. An MVT can change its topological character-
istics and structures based on variable joints whose types and/or orientations are changeable during the operation process.
In general, the topology of kine