数控短电弧铣削加工最优进给速度研究  

Study on the Optimal Feed Rate in Short Arc Milling

作　　者：王博[1] 周建平[1,2] 木合塔尔.克力木 许燕[1,2] 汪兵兵[1] 李雪芝[1] 

机构地区：[1]新疆大学机械工程学院,乌鲁木齐830047 [2]西安交通大学机械工程学院,西安710049

出　　处：《机械设计与研究》2016年第6期110-112,117,共4页Machine Design And Research

基　　金：镍基高温合金短电弧高效切削过程中再铸层表面完整性热变形研究(51365053);自治区科技人才培养项目资助(gn2015yx008)

摘　　要：在实验基础上得出短电弧铣削加工进给速度对工具电极相对损耗的影响规律,并确定在特定铣削深度下的最优加工速度。实验分析发现:进给速度增加的过程中,各个阶段的损耗方式不相同;在一定范围内,随着工具电极进给速度的增加电极相对损耗呈现先减小后增大的趋势,当加工速度增加到0.75 mm/s时,电极相对损耗达到最小值10%。根据短电弧加工的机理和特点,提出了"逐差法"寻找不同铣削深度下最优电极进给速度,与手动寻找最优加工速度相对比发现二者结果相近。证明"逐差法"的准确性,为日后短电弧铣削加工探寻电极损耗提供参考。Based on the experimental results, the influence of feed rate on the relative loss of tool electrode was obtained, and the optimal processing speed in the specific milling depth was determined. The experimental analysis showeds that in the process of increasing the feed rate, the loss of each stage was different; In a certain range, with the increase of the feed rate of the tool electrode, the relative loss of the electrode decreaseds firstly and then increaseds. When the processing speed inereaseds to 0.75 mm/s, the relative loss of the electrode reacheds a minimum value of 10%. According to the mechanism and characteristics of the short arc machining, the optimal＇ electrode feed rate ＇of different milling depth was found by the method of ＂one by one＂, and the results were similar to the optimal processing speed obtained by the manual search. The accuracy of the method was proved to provide reference for the future short arc milling.

关 键 词：短电弧铣削加工 电极损耗 进给速度 算法 

分 类 号：TH164[机械工程—机械制造及自动化]