基于材料损伤演化的钛合金螺旋铣孔切削力仿真模型

兰州理工大学学报 ›› 2023, Vol. 49 ›› Issue (2): 56-64.

基于材料损伤演化的钛合金螺旋铣孔切削力仿真模型

李伟¹, 周兰^*1, 王林军¹, 安国升², 冯力², 冯照和³

1.兰州理工大学机电工程学院, 甘肃兰州 730050;
2.兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 甘肃兰州 730050;
3.杭州汽轮机股份有限公司, 浙江杭州 310022

收稿日期:2021-12-30 出版日期:2023-04-28 发布日期:2023-05-05
通讯作者: 周兰(1983-),女,甘肃兰州人,副教授.Email:11225012@zju.edu.cn
基金资助:
甘肃省自然科学基金(18JR3RA147),甘肃省青年博士基金(2021QB-043)

Simulation model of cutting force in helical milling hole of titanium alloy based on material damage evolution

LI Wei¹, ZHOU Lan¹, WANG Lin-jun¹, AN Guo-sheng², FENG Li², FENG Zhao-he³

1. School of Mechanical and Electrical Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China;
2. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal, Lanzhou Univ. of Tech., Lanzhou 730050, China;
3. Hangzhou Steam Turbine Company Limited, Hangzhou 310022, China

Received:2021-12-30 Online:2023-04-28 Published:2023-05-05

摘要/Abstract

摘要： 切削力仿真是降低实验验证成本、优化工艺参数的有效途径,但是螺旋铣孔为偏心加工,切削力仿真时材料损伤过程难以描述且网格畸变严重,大大局限了仿真预测的应用.通过引入物理分离准则,将断裂能演化方式定义为指数演化方式,确定断裂能参数为44 350 N/m,结合加工周期内轴向和切向进给量取值范围,优化网格划分参数,最终通过ABAQUS软件实现了四齿立铣刀螺旋铣孔稳定加工阶段中单位公转周期的三维有限元模型构建.结果表明,断裂能的演化方式和网格划分参数的合理选取能够有效提高切削力仿真模型的准确性,螺旋铣孔轴向切削力和切向切削力的平均预测值为实验值的91.7%和92%,且最大误差不超过9%.模型在不同齿数(单齿、两齿、三齿、四齿)、相同几何结构立铣刀的螺旋铣孔切削力仿真中亦体现出较强的可扩展性.

关键词: 螺旋铣孔, 有限元模型, 损伤演化, 切削力

Abstract: Cutting force simulation is an effective way to reduce experimental verification costs and optimize process parameters. The material damage process is difficult to describe and the grid distortion is serious in the 3D simulation of helical milling hole. In order to solve this problems, the evolution mode of fracture energy is defined as exponential evolution, the physical separation criterion was adopted and the fracture energy parameter was determined to be 44 350 N/m. Combined with the range of axial and tangential feed in the machining cycle, the meshing parameters were set and the 3D finite element model of unit period of revolution in the stable machining stage of helical milling hole was constructed. The results show that the fracture energy and meshing parameters can effectively improve the accuracy of cutting force simulation model. The average values of axial cutting force and tangential cutting force of helical milling are 91.7% and 92% of the experimental values, respectively, with the maximum error less than 9%. The model also shows strong can also be applied to the simulation of cutting force in helical milling with different cutter teeth (single, two, three and four teeth) and the same geometry of mills.

Key words: helical milling hole, finite element model, damage evolution, cutting force

中图分类号:

TH123

李伟, 周兰, 王林军, 安国升, 冯力, 冯照和. 基于材料损伤演化的钛合金螺旋铣孔切削力仿真模型[J]. 兰州理工大学学报, 2023, 49(2): 56-64.

LI Wei, ZHOU Lan, WANG Lin-jun, AN Guo-sheng, FENG Li, FENG Zhao-he. Simulation model of cutting force in helical milling hole of titanium alloy based on material damage evolution[J]. Journal of Lanzhou University of Technology, 2023, 49(2): 56-64.

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