Modeling and Simulation of Surface Topography under Ball-end Milling Based on Dynamic Response of Milling System

被引：0

作者：

Dong Y. ^{[1
]}

Li S. ^{[1
]}

Zhang Q. ^{[2
]}

Li P. ^{[1
]}

Li Q. ^{[1
]}

Jia Z. ^{[1
]}

Li Y. ^{[1
]}

机构：

[1] School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Shaanxi, Xi’an

[2] School of Mechanical and Electrical Engineering, Guilin University of Electronic Science and Technology, Guangxi, Guilin

来源：

Binggong Xuebao/Acta Armamentarii | 2022年 / 43卷 / 08期

关键词：

ball-end milling; dynamic displacement; modeling and simulation; surface topography;

D O I：

10.12382/bgxb.2021.0472

中图分类号：

学科分类号：

摘要：

Milling surface topography modeling based on the dynamic response of the weak-stiffness ball-end milling system has an important theoretical value for improving surface quality. To do this, first of all, the kinematic trajectory of the ball-end milling cutter teeth is established by homogeneous coordinate transformation, and a solution for the milling force is put forward according to the mechanical modeling method. A dynamic model for the flexible cutter-flexible workpiece milling system is established based on the regenerative vibration theory. A method for solving dynamic displacement of processes based on the full discrete method with the effect of variable time delay considered is proposed. And a linear interpolation method is adopted to modify the cutter tooth trajectory. Then, a simulation method for the surface topography under ball-end milling is proposed by combining Z-MAP method and numerical method. After completing geometric simulation of the surface topography generated by the machining path, a physical simulation considering the dynamic displacement of the process system induced by vibration is carried out. Lastly, a validation experiment is conducted by milling material 7050-T6 using a carbide ball-end milling cutter. The experiment and simulation results are consistent, indicating that the modeling method is effective and can provide theoretical basis for selecting and optimizing actual machining parameters. © 2022 China Ordnance Society. All rights reserved.

引用

页码：1977 / 1989

页数：12

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