基于双刀对称车削工艺的杆件加工变形量控制研究  

Research on Deformation Control of Rod Machining Based on Double-tool Symmetrical Turning Process

作　　者：孙捷夫 薛详友 杨巍[1] 孙国雁[1] 唐臣升[1] Sun Jiefu;Xue Xiangyou;Yang Wei;Sun Guoyan;Tang Chensheng(AVIC Shenyang Aircraft Company Limited,Shenyang 110000,China;不详)

机构地区：[1]沈阳飞机工业(集团)有限公司,沈阳市110000 [2]哈尔滨工程大学

出　　处：《工具技术》2022年第11期108-113,共6页Tool Engineering

基　　金：国家重点研发计划(2019YFB2005400)。

摘　　要：为解决LF6铝合金杆件车削变形量大的问题,提出双刀对称车削工艺,并对杆件进行受力分析,锁定加工参数和加工刀具几何形状作为控制杆件变形的突破口。基于空间填充法对8个变量进行试验设计,通过对试验结果进行机理分析和极差分析,确定切削速度、进给量和刀具前角是控制杆件变形的主要因素,利用单因素试验法得出最优刀具前角为26°。基于中心复合法对切削速度和进给量进行试验设计,通过响应面法建模和哈里斯鹰群算法优化计算,得出最优切削速度为104m/min,最优进给量为0.28mm/r,并对优化结果进行实际加工验证。结果表明:采用双刀对称车削工艺并选取最优参数可有效实现杆件变形量的精准控制,满足实际工程要求。In order to solve the problem of large turning deformation of LF6 aluminum alloy rods, a double-tool symmetrical turning process is proposed, and the force analysis of the rod is carried out, locking processing parameters and machining tool geometry is to control the deformation of the rod.Based on the space-filling method, the test design of 8 variables is carried out.Through the mechanism analysis and range analysis of the test results, it is determined that the cutting speed, feed rate and rake angle are the main factors affecting the deformation of the rod and based on the single factor test, the optimal rake angle is 26°,based on the center compound method, the cutting speed and feed are experimentally designed.Through the response surface method modeling and the Harris Hawks Optimization calculation, the optimal cutting speed is 104 m/min, the optimal feed rate is 0.28 mm/r, and the optimization results are verified by actual machining.The results show that the use of the double-tool symmetrical turning process and the selection of optimized parameters can effectively achieve precise control of rod deformation and meet actual engineering requirements.

关 键 词：双刀对称车削工艺 LF6铝合金 杆件 变形量控制 参数优化 

分 类 号：TG51[金属学及工艺—金属切削加工及机床] TH161[机械工程—机械制造及自动化]