大型薄壁硬质铝合金零件加工技术研究

2020-10-19

作者：任宇强，李国剑，白浩单位：西北机电工程研究所

摘要：以某火炮左、右组合炮箱为例，分析高强度硬质铝合金薄壁零件的加工特点，通过优化工艺路线和加工方法，运用分层铣削法加工毛坯，利用交叉分层铣削法减少零件应力变形，采用刨削法保证大面平面度要求，将左、右箱体板耦合加工各孔，保证孔的位置度要求。结果表明，该加工方法可有效提高零件的加工质量和加工效率，对控制薄板类零件加工应力变形有一定的借鉴意义。

关键词：薄壁零件；多孔系零件；应力变形；交叉分层铣削法

中图分类号：TG166.3；TH162文献标志码：ADOI：10.3969/j.issn.1000-7008.2020.04.014

Research on Machining Techniques for Large Thinwalled

Components Made of Hard Aluminum Alloys

Ren Yuqiang，Li Guojian，Bai Hao

Abstract:Machining characteristics of thinwalled components made of highstrength hard aluminum alloys are studied with the example of the left and right receiver complex of a gun.Apply layered milling to the blank，use cross layered milling to reduce stressinduced deformation，and adopt the planing method to meet the requirement of big plane flatness and couple the walls of both receivers together to drill holes so as to make sure the holes are well aligned.All of these efforts are intended to optimize the process routes and machining techniques.It has been proved that through the practice these machining techniques have improved quality and efficiency，it can be applied to control stress deformation when machining other thinwalled components.

Keywords:thinwalled component；porous component；stressinduced deformation；cross layered milling