### 考虑加工过程的复杂薄壁件加工综合误差补偿方法

1. 西北工业大学 现代设计与集成制造技术教育部重点实验室, 陕西 西安 710072
• 收稿日期:2013-11-27 修回日期:2014-03-14 出版日期:2014-11-25 发布日期:2014-03-20
• 通讯作者: 张定华,Tel.: 029-88493232 E-mail: dhzhang@nwpu.deu.cn E-mail:dhzhang@nwpu.deu.cn
• 作者简介:杨建华 男, 博士研究生.主要研究方向:复杂结构的高效精密数控加工技术. Tel: 029-88493232-411 E-mail: yjh2099@gmail.com; 张定华 男, 博士, 教授, 博士生导师.主要研究方向:航空发动机先进制造技术. E-mail:dhzhang@nwpu.edu.cn; 吴宝海 男, 博士, 副教授.主要研究方向: 复杂结构的高效精密数控加工技术. E-mail:wubaohai@nwpu.edu.cn
• 基金资助:

国家"973"计划 (2013CB35802)

### A Comprehensive Error Compensation Approach Considering Machining Process for Complex Thin-wall Parts Machining

YANG Jianhua, ZHANG Dinghua, WU Baohai

1. Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, China
• Received:2013-11-27 Revised:2014-03-14 Online:2014-11-25 Published:2014-03-20
• Supported by:

National Basic Research Program of China (2013CB35802)

Abstract:

Based on statistical analysis, the paper viewed the process of NC machining as a mathematical function with the reference model as an independent variable and the machining result as the dependent variable. Then the whole error compensation process is divided into three typical states whose process functions are built separately. With the help of the removal amount coefficient, the mathematical model of comprehensive error compensation is constructed. And the model is resolved by Taylor expansion to calculate the error compensation amount which is used to reconstruct the geometric model of the part and regenerate a new NC program. The approach is verified with a milling experiment of thin-wall blades. The maximum error was 0.031 mm after machining at the error compensation machining amount, which is 32.9% of the maximum error of 0.094 mm after machining at the normal machining amount. The result shows that the approach is efficient in improving machining quality.