| 工-夹系统刚度计算及变形加工误差模型 |
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| 引用本文： | 张发平,孙厚芳,袁光明,陈光明. 工-夹系统刚度计算及变形加工误差模型[J]. 北京理工大学学报, 2004, 24(12): 1041-1044 |
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| 作者姓名： | 张发平 孙厚芳 袁光明 陈光明 |
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| 作者单位： | 北京理工大学,机械与车辆工程学院,北京,100081;北京理工大学,机械与车辆工程学院,北京,100081;山东理工大学,机械工程学院,山东,淄博,255012;北京理工大学,机械与车辆工程学院,北京,100081;中国人民解放军陆军航空兵学院,机械系,北京,101104 |
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| 摘 要： | 研究切削加工过程中工件-夹具系统的刚度计算方法及变形加工误差.运用经典Hertz接触理论和有限元方法,基于切削加工中工件的准静态受力分析,提出工件-夹具系统刚度计算的新方法,建立了基于工件-夹具系统刚度的工件加工误差预报模型.该方法避免了有限元计算中接触分析的使用,无需多次非线性迭代计算,减少了计算时间.
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| 关 键 词： | 工-夹系统 刚度计算 有限元方法 加工误差 |
| 文章编号： | 1001-0645(2004)12-1041-05 |
| 收稿时间： | 2004-06-10 |
Machining Error Analysis Based on the Stiffness of Workpiece-Fixture System |
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| ZHANG Fa-ping,SUN Hou-fang,YUAN Guang-ming and CHEN Guang-ming. Machining Error Analysis Based on the Stiffness of Workpiece-Fixture System[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2004, 24(12): 1041-1044 |
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| Authors: | ZHANG Fa-ping SUN Hou-fang YUAN Guang-ming CHEN Guang-ming |
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| Affiliation: | ZHANG Fa-ping~1,SUN Hou-fang~1,YUAN Guang-ming~ |
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| Abstract: | Workpiece-fixture stiffness and machining errors are studied. Based on the quasi static force analysis of workpiece,a new method to compute the stiffness of workpiece-fixture system is presented. The classic Hertz contact theory and finite element method(FEM) are made use of, yet the contact analysis in FEM and multi-nonlinear calculations are avoided. A model to predict workpiece machining errors based on the deformation of workpiece-fixture system is provided. In this way much of the time of calculation can be cut down. |
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| Keywords: | workpiece-fixture system stiffness computation FEM method machining errors |
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