• CN：11-2187/TH
• ISSN：0577-6686

• 制造工艺与装备 •

### 微铣削中考虑刀具跳动的瞬时切厚解析计算方法

1. 1. 上海交通大学机器人研究所  上海  200240；
2. 上海交通大学机械系统与振动国家重点实验室  上海  200240
• 收稿日期:2015-02-08 修回日期:2015-10-16 出版日期:2016-02-05 发布日期:2016-02-05
• 通讯作者: 毕庆贞，男，1979年出生，博士，副研究员，硕士研究生导师。主要研究方向为数控加工技术与装备。 E-mail：biqz@sjtu.edu.cn
• 作者简介:聂强，男，1990年出生。主要研究方向为微细加工制造。 E-mail：chonger2008nq@sina.com
• 基金资助:
国家高技术研究发展计划资助项目(863计划，2012AA041309)

### New Mathematic Method of Calculating Instantaneous Un-deformed Chip Thickness with Tool Run-out in Micro-end-milling

NIE Qiang1,2,  HUANG Kai1,2,  BI Qingzhen1,2,  ZHU Limin1,2

1. 1. Institute of Robotics, Shanghai Jiao Tong University, Shanghai 200240;
2. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240
• Received:2015-02-08 Revised:2015-10-16 Online:2016-02-05 Published:2016-02-05

Abstract: A new mathematic method of calculating instantaneous un-deformed chip thickness is established through analysis of true cutting tool tip trajectories. Two specific formulas are given in condition of two-flute and four-flute micro end milling. Then cutting process of each tooth with tool run out is analyzed by applying the new method in two-flute and four-flute micro slot milling. This new method considered comprehensive radial cutter run-out which include the spindle run-out and assemble errors and can be used to calculate the un-deformed chip thickness of cutting tools with any number of teeth. The accuracy and practicability are verified and some differences between micro milling and traditional milling process are pointed out by comparing the new method with other methods such as Bao’s and Newton-Raphson method. Cutting force is predicted based on the new method in micro slot milling experiment. The simulation result shows a very good agreement with experiment data.