整体叶盘通道去余量线切割加工技术研究

doi:10.3901/JME.2019.02.027

机械工程学报 ›› 2019, Vol. 55 ›› Issue (2): 27-32.doi: 10.3901/JME.2019.02.027

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整体叶盘通道去余量线切割加工技术研究

蔺小军¹, 杨碧颖¹, 张新鸽¹, 吴刚¹, 单秀峰¹, 胡良毅², 余杰²

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. 中国航发西安航空发动机有限公司西安 710021

收稿日期:2018-04-05 修回日期:2018-10-18 出版日期:2019-01-20 发布日期:2019-01-20
通讯作者: 蔺小军(通信作者),男,1968年出生,博士,高级工程师。主要研究方向为精密测量、逆向造型、CAD/CAM。E-mail:linxj@nwpu.edu.cn
作者简介:杨碧颖,女,1995年出生。主要研究方向为CAD/CAM。E-mail:yby950601@163.com
基金资助:
国家科技重大专项（2015ZX04001003）资助项目

Study on Wire Cutting Machining Techniques in Removing Allowance of Blisk Tunnel

LIN Xiaojun¹, YANG Biying¹, ZHANG Xinge¹, WU Gang¹, SHAN Xiufeng¹, HU Liangyi², YU Jie²

1. Key Laboratory of Contemporary Design and Integrated Manufacturing Technology of Ministry of Education, Northwestern Polytechnical University, Xi'an 710072;
2. AECC Xi'an Aero-engine LTD, Xi'an 710021

Received:2018-04-05 Revised:2018-10-18 Online:2019-01-20 Published:2019-01-20

摘要/Abstract

摘要： 整体叶盘的加工余量主要是在其通道开槽粗加工阶段去除的，合理选取整体叶盘粗加工通道余量去除方法是降低通道加工费用、实现整体叶盘加工经济性的关键。由于线切割机床加工单位成本低的原因，采用线切割加工方法对整体叶盘通道进行去余量加工。提出利用叶型与轮毂偏置面确定通道加工边界；通过比较通道边界投影后的投影面积大小确定最优矢量；然后根据最优矢量确定线切割丝与叶盘端面之间的夹角以及切割区域，实现整体叶盘粗加工阶段去除余量最大化。该方法可以有效地解决整体叶盘粗加工阶段经济性问题。试验表明，线切割加工可以应用在整体叶盘通道去余量加工中，并且与传统数控铣削相比，单个通道的加工费用仅为数控铣削加工费用的1/20。

关键词: 通道余量, 线切割, 整体叶盘, 最优矢量

Abstract: Machining allowance for a blisk is mainly removed in the rough milling, so selecting the appropriate machining method to remove the allowance of blisk tunnel in the rough milling is key to reducing the tunnel cutting costs and making the blisk machining economically. As the wire cut electrical discharge machining machine processing unit cost is low, wire cutting is used to remove the allowance of tunnel. The processing boundary of tunnel is determined by the offset surface of blade and hub of blisk.The optimal vector is determined by comparing the size of the projected area after the projection of the boundary of the tunnel. Then, the cutting area and the angle between the line cutting wire and the end face of the blisk are determined according to the optimal vector, and the cutting area is maximized. This method can effectively solve the economic problems of blisk in the rough milling. The demonstration shows that the wire cutting can be applied to remove the allowance of blisk, and compared with the traditional CNC milling, the processing cost of a single channel is only one-twentieth of the cost of CNC milling.

Key words: allowance of tunnel, blisk, optimal vector, wire cutting

中图分类号:

TP391

蔺小军, 杨碧颖, 张新鸽, 吴刚, 单秀峰, 胡良毅, 余杰. 整体叶盘通道去余量线切割加工技术研究[J]. 机械工程学报, 2019, 55(2): 27-32.

LIN Xiaojun, YANG Biying, ZHANG Xinge, WU Gang, SHAN Xiufeng, HU Liangyi, YU Jie. Study on Wire Cutting Machining Techniques in Removing Allowance of Blisk Tunnel[J]. Journal of Mechanical Engineering, 2019, 55(2): 27-32.

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整体叶盘通道去余量线切割加工技术研究

Study on Wire Cutting Machining Techniques in Removing Allowance of Blisk Tunnel

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