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[1]戚厚军,等. 低刚度铣削工艺系统的弹性铣削力建模方法[J].天津大学学报(自然科学版),2010,(02):143-148.
 QI Hou-jun,ZHANG Da-wei,et al. Modeling Methodology of Flexible Milling Force for Low-Rigidity Processing System During High Speed Milling[J].Journal of Tianjin University,2010,(02):143-148.
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 低刚度铣削工艺系统的弹性铣削力建模方法()
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《天津大学学报(自然科学版)》[ISSN:0493-2137/CN:12-1127/N]

卷:
期数:
2010年02
页码:
143-148
栏目:
机械工程
出版日期:
2010-02-15

文章信息/Info

Title:
 Modeling Methodology of Flexible Milling Force for Low-Rigidity Processing System During High Speed Milling
作者:
 戚厚军1 2张大卫1蔡玉俊2沈 煜1
 1. 天津大学机械工程学院,天津 300072; 2. 天津工程师范学院天津市高速切削与精密加工重点实验室,天津 300222
Author(s):
 QI Hou-jun1 2ZHANG Da-wei1CAI Yu-jun2SHEN Yu1
 1. School of Mechanical Engineering,Tianjin University,Tianjin 300072,China;2. Tianjin Key Laboratory of High Speed Cutting and Precision Machining,Tianjin University of Technology and Education,Tianjin 300222,China
关键词:
 弹性铣削力低刚度工件形变预测弯扭耦合铣削加工
Keywords:
 flexible milling forcelow-rigidity componentdeflection predictionbending-torsional coupled theorymilling machine
分类号:
TG501
文献标志码:
A
摘要:
 为了提高高速加工过程中薄壁结构件的加工精度,针对低刚度工艺系统的形变特点,建立了低刚度铣削工艺系统的弹性铣削力模型.该模型中基于弯扭剪耦合弹性力学理论,推导出了工件弹性铣削形变的解析式;并考虑到工件和铣刀的弹性形变共同引起铣削啮合角的变化,推导出啮合角的表达式.通过铣削力和铣削变形仿真以及铣削试验验证得知:铣削力与工件的铣削形变密切相关,工件的法向铣削分力是引起工件形变的主要因素.最后,经铣削力试验验证了实测结果和仿真结果具有较好的一致性.
Abstract:
 To improve accuracy of the profile for flexible components during high speed milling,a model has beenproposed showing the relationship between deflection of the low-rigidity processing system and the flexible milling force.Based on the bending-torsional-shearing coupled theory,a mathematical expressionfor static machining deflection prediction of thin-wall plate components has been determined,and the bending deflection and shear deflection which affect the dimension stability of the finished parts have been analyzed. The expression for modified cutting teeth immersion angle has also been introduced which takes into account the deflection of the workpiece and the cutter. Simulation and experiment results indicate that deflection of the low-rigidity workpiece is closely related to the milling force,and the predicted force in the normal direction is the major factor influencing the workpiece deflection. The proposed flexible force model has been experimentally validated and the results of the predicted and measured force values show good consistency.

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备注/Memo

备注/Memo:
 通讯作者:张大卫,medzhang@tju.edu.cn.
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