| 并联机床主模块静刚度的有限元分析(英文) |
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| 引用本文： | 周立华,王玉茹,黄田,MODLER K H.并联机床主模块静刚度的有限元分析(英文)[J].天津大学学报(英文版),2001,7(1). |
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| 作者姓名： | 周立华 王玉茹 黄田 MODLER K H |
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| 作者单位： | 1. 天津大学机械工程学院,
2. 德国德累斯顿理工学院机械学院 |
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| 基金项目： | Tianjin Key Project !(No.9931 0 71 1 1 ) |
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| 摘 要： | 借助商用有限元分析软件 ANSYS,首先研究了并联机床主模块各主要构件对其刚度的贡献 ,发现机架起主要作用 ;进而研究了约束条件、支链长度以及不同工作方式对其刚度的影响规律 ,发现当约束机架上不含驱动单元的主侧面时 ,主模块的刚度最大 ,并且主模块用于立式机床时 ,其刚度远优于用于卧式机床 ;最后 ,分析总结了机床位于工作空间不同位置时的刚度变化规律 .该成果为并联机床主模块的设计提供了重要的理论指导 .
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| 关 键 词： | 并联机床 主模块 静刚度 有限元分析 |
STIFFNESS ANALYSIS OF THE MAIN MODULE FOR PARALLEL MACHINE TOOLS BY FINITE ELEMENT ANALYSIS |
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| ZHOU Li-hua,WANG Yu-ru,HUANG Tian,MODLER K H.STIFFNESS ANALYSIS OF THE MAIN MODULE FOR PARALLEL MACHINE TOOLS BY FINITE ELEMENT ANALYSIS[J].Transactions of Tianjin University,2001,7(1). |
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| Authors: | ZHOU Li-hua WANG Yu-ru HUANG Tian MODLER K H |
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| Institution: | ZHOU Li-hua 1,WANG Yu-ru,1 HUANG Tian 1,MODLER K H 2 |
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| Abstract: | With the aid of commercial finite element analysis software package ANSYS,investigations are made on the contributions of main components to stiffness of the main module for parallel machine tools,and it is found that the frame is the main contributor.Then,influences of constraints,strut length and working ways of the main module have also been investigated.It can be concluded that when one of the main planes of the frame without linear drive unit is constrained,the largest whole stiffness can be acquired.And,the stiffness is much better when the main module is used in a vertical machine tool instead of a horizontal one.Finally,the principle of stiffness variation is summarized when the mobile platform reaches various positions within its working space and when various loads are applied.These achievements have provided critical instructions for the design of the main module for parallel machine tools. |
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| Keywords: | parallel machine tool main module stiffness finite element analysis |
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