钛合金TC4盘铣开槽加工铣削力研究  

Milling Force of Disc Milling Grooving of TC4 Titanium Alloy

作　　者：辛红敏 董脉鸣 杨程 赵涛[2] 张清贵 XIN Hongmin;DONG Maiming;YANG Cheng;ZHAO Tao;ZHANG Qinggui(Hubei Key Laboratory of Power System Design and Test for Electrical Vehicle,Hubei University of Arts and Science,Xiangyang 441053;Key Laboratory of High Performance Manufacturing for Aero Engine,Ministry of Industry and Information Technology,Northwestern Polytechnical University,Xi’an 710072;Hubei Chaozhuo Aviation Technology Co.,Ltd.,Xiangyang 441000)

机构地区：[1]湖北文理学院,纯电动汽车动力系统设计与测试湖北省重点实验室,襄阳441053 [2]西北工业大学航空发动机高性能制造工业和信息化部重点实验室,西安710072 [3]湖北超卓航空科技股份有限公司,襄阳441000

出　　处：《宇航材料工艺》2021年第6期24-32,共9页Aerospace Materials & Technology

基　　金：高档数控机床与基础制造装备科技重大专项(2013ZX04001081);中国博士后面上资助(2018M631195);湖北文理学院“机电汽车”湖北省优势特色学科群开放基金;纯电动汽车动力系统设计与测试湖北省重点实验室开放基金。

摘　　要：由于盘铣刀具直径大,切削余量大,造成钛合金盘铣开槽过程中铣削力较大,进而引起刀具振动,缩短刀具寿命。为实现对钛合金盘铣开槽过程的优化与控制,本文设计单因素实验和正交实验,利用三向压电式测力仪测量铣削力数据,采用线性回归技术建立铣削力模型并以“F”检验法对模型进行显著性检验;利用极差分析法分析工艺参数对铣削力的影响规律,利用响应曲面法分析工艺参数对铣削力的交互影响规律。研究结果表明:对于切削深度变化敏感度依次为铣削力F_(x)>进给速度>主轴转速;对于进给速度变化敏感度依次为铣削力F_(y)>切削深度>主轴转速;对于铣削力F_(z)变化敏感度依次为主轴转速>切削深度。铣削力随着主轴转速的增大而减小,随着切削深度和进给速度的增大而增大。另外铣削力F_(x)大于F_(y)和F_(z),对加工性能和刀具磨损起主导作用。Milling force is large during disc milling grooving of titanium alloy because of big diameter of the cutter and large cutting output,which leads to obvious vibration of cutter and shorter tool life.In the study,in order to optimize and control the process of disc milling grooving in titanium alloy,single factor experiment and orthogonal experiment are designed,and milling force is measured by three-way piezoelectric dynamometer.The prediction model of milling force is built by linear regression method,and the significance of model is checked by“F”test method.The effect of technological parameters on milling force is analyzed by the extremum difference analysis.The interaction effect of technological parameters on milling force is studied by response surface method.Experiment results show that the sensitivity to changes in cutting depth is in the order of milling force F_(x)>feed speed>spindle speed.The sensitivity to feed rate changes is in the order of milling force F_(y)>cutting depth>spindle speed.The sensitivity to milling force F_(z) changes in the order of spindle speed>cutting depth.Milling force decreases with the increase of spindle speed and increases with the increase of cutting depth and feed speed.In addition,milling force F_(x)is greater than F_(y)and F_(z),which plays a leading role in machining performance and tool wear.

关 键 词：TC4钛合金 盘铣 铣削力 工艺参数 

分 类 号：TG506.7[金属学及工艺—金属切削加工及机床]