面向叶片型面的五轴联动柔性数控砂带抛光技术

doi:10.7527/S1000-6893.2014.0203

材料工程与机械制造

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面向叶片型面的五轴联动柔性数控砂带抛光技术

蔺小军¹, 杨艳¹, 吴广¹, 高源¹, 陈悦¹, 刘敏², 刘明星³

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, 西安 710072;
2. 中航工业西安航空发动机(集团)有限公司科技发展部, 西安 710021;
3. 中航工业西安航空发动机(集团)有限公司工艺技术中心, 西安 710021

收稿日期:2014-06-30 修回日期:2014-07-18 出版日期:2015-06-15 发布日期:2014-09-22
通讯作者: 蔺小军 Tel.: 029-88460426 E-mail: linxj@nwpu.edu.cn E-mail:linxj@nwpu.edu.cn
作者简介:蔺小军男, 博士, 高级工程师, 硕士生导师。主要研究方向:精密几何测量、CAD/CAM。 Tel: 029-88460426 E-mail: linxj@nwpu.edu.cn;杨艳女,硕士研究生。主要研究方向:精密几何测量、CAD/CAM。 Tel: 029-88460426 E-mail: meisilin_2006@126.com
基金资助:
国家科技重大专项 (2013ZX04011031)

Flexible polishing technology of five-axis NC abrasive belt for blade surface

LIN Xiaojun¹, YANG Yan¹, WU Guang¹, GAO Yuan¹, CHEN Yue¹, LIU Min², LIU Mingxing³

1. Key Laboratory of Contemporary Design and Integrated Manufacturing Technology Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, China;
2. Department of Science and Technology, AVIC Xi'an Aircraft Engine (Group) Co., Ltd, Xi'an 710021, China;
3. Department of Process Technology Center, AVIC Xi'an Aircraft Engine (Group) Co., Ltd, Xi'an 710021, China

Received:2014-06-30 Revised:2014-07-18 Online:2015-06-15 Published:2014-09-22
Supported by:
National Science and Technology Major Projects (2013ZX04011031)

摘要/Abstract

摘要：

针对叶片型面抛光,在分析五轴联动数控砂带抛光可行性的基础上,设计并开发了五轴联动柔性数控砂带抛光机。提出了接触轮与叶片型面有效贴合的概念,并通过改善抛光工具、采用柔性抛光技术和控制抛光轴矢量来实现砂带与叶片型面的有效贴合。抛光轴矢量由抛光位点处法矢和接触轮进给矢量计算获得,既实现了砂带与叶片型面的有效贴合,而且满足抛光轮接触压力方向与柔性机构收缩方向基本一致的要求。抛光轨迹规划采用等参数线法,抛光行距根据抛光带宽确定。最后进行抛光实验,结果为精抛后粗糙度达到0.25~0.39 μm,抛光前后叶型轮廓度变化0.007 mm,抛光去除量在0.010~0.016 mm之间,满足图纸要求。通过实验表明,五轴联动数控砂带抛光叶片型面可行,采用本文所述技术能够满足叶片型面抛光要求。

关键词: 柔性, 抛光机床, 数控, 叶片, 路径规划, 姿态控制

Abstract:

For the abrasive belt polishing of blade surface, the flexible polishing machine of five-axis NC abrasive belt is designed and developed based on the feasibility of five-axis NC abrasive belt polishing. The concept of effective matching of contacting wheel and blade surface is put forward. A new method through improving the polishing tool,using the flexible polishing technology and controlling the polishing axis vector is used to ensure the effective matching of contacting wheel and blade surface. The polishing axis vector is calculated by normal vector of polishing location point and feed direction vector of contacting wheel, so as to achieve the effective matching of contacting wheel and blade surface, and meet the basic consistency between polishing wheel contacting pressure direction and flexible polishing structure retractable direction. The iso-parametric lines method is used to plan polishing path and polishing stepover length is determined by the polishing width. Finally, the polishing test result displays that the roughness of fine polishing can reach 0.25-0.39 μm, the profile about blade surface before and after polishing changes 0.007 mm, and the polishing material removal is between 0.010-0.016 mm, meeting the requirements of the drawings. Experiments show that five-axis NC abrasive belt polishing for blade surface is feasible and the technology described in this paper can meet the requirements of the blade surface polishing.

Key words: flexible, polishing machines, NC, blades, path formulation, attitude control

中图分类号:

V261.2⁺5

蔺小军, 杨艳, 吴广, 高源, 陈悦, 刘敏, 刘明星. 面向叶片型面的五轴联动柔性数控砂带抛光技术[J]. 航空学报, 2015, 36(6): 2074-2082.

LIN Xiaojun, YANG Yan, WU Guang, GAO Yuan, CHEN Yue, LIU Min, LIU Mingxing. Flexible polishing technology of five-axis NC abrasive belt for blade surface[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(6): 2074-2082.

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E-mail：hkxb@buaa.edu.cn

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面向叶片型面的五轴联动柔性数控砂带抛光技术

Flexible polishing technology of five-axis NC abrasive belt for blade surface

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