TC11钛合金插铣加工铣削力影响参数的灵敏度分析  

Sensitivity Analysis of Parameters Affecting Milling Force in Plunge Milling of Titanium Alloy TC11

作　　者：杨振朝[1] 张定华[1] 姚倡锋[1] 任军学[1] 田卫军[1] 

机构地区：[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,陕西西安710072

出　　处：《航空学报》2009年第9期1776-1781,共6页Acta Aeronautica et Astronautica Sinica

基　　金：国家科技支撑计划重点项目(2008BAF32B10);教育部重大项目(309026);航空科学基金(2007ZE53061)

摘　　要：为优化钛合金插铣加工工艺参数,对铣削力的控制提供试验依据,采用三因素四水平正交试验方法对TC11钛合金进行了插铣试验,运用多元线性回归进行数值拟合,建立了三向铣削力的数学模型。基于此模型,采用灵敏度分析的方法,分别分析了三向铣削力对铣削速度、每齿进给量和铣削深度的绝对灵敏度和相对灵敏度,研究了铣削参数对铣削力的影响规律。结果表明:钛合金插铣加工中,三向铣削力都随着铣削速度、每齿进给量和铣削深度的增加而增加,但影响程度不同;z向铣削力比x向、y向铣削力对铣削参数变化更为敏感;三向铣削力都是对铣削深度的变化最敏感,对每齿进给量次之,对铣削速度最不敏感。To optimize the parameters of plunge milling of titanium alloys and provide an experimental basis for milling force control, mathematical models of three-direction milling forces for plunge milling of titanium alloy TCll are built by three factors and four levels orthogonal experimental method, and multivariable linear regression method is used to conduct the numerical fitting. Based on these models, the absolute and relative sensitivities of three-direction milling force with respect to milling speed, feed per tooth and milling depth are analyzed. The effect of milling parameters on milling forces is studied. The results show that in plunge milling of titanium alloy TC11, the three-direction milling forces increase with increasing milling speed, feed per tooth and milling depth, but the influence degree is different. The z-direction milling force is more sensitive to all milling parameters variations than the x-direction and y-direction milling force. The three-direction milling forces are all more sensitive to milling depth than feed per tooth, least sensitive to milling speed.

关 键 词：灵敏度分析 钛合金 插铣 铣削力 铣削参数 

分 类 号：V261.23[航空宇航科学与技术—航空宇航制造工程]