钛合金加工切削力试验研究  

Test study on cutting force in titanium alloy machining

作　　者：李登万[1] 陈洪涛[1] 甘建水[1] 许明恒[1] 黄遂[1] 

机构地区：[1]西南交通大学机械工程学院,四川成都610031

出　　处：《广西大学学报（自然科学版）》2010年第5期733-737,共5页Journal of Guangxi University（Natural Science Edition）

基　　金：国家重大专项资助项目(2009ZX04014-102-03)

摘　　要：为了探索难加工材料钛合金的切削规律,采用均匀设计方法设计了试验参数,在12℃常温干式切削和-50℃低温冷风降温切削条件下,对切削力进行试验研究。将常用的指数形式切削力经验公式进行线性化处理,并对试验数据进行多元线性回归分析,在此基础上建立了适用于钛合金的切削力的指数形式经验公式,方差分析结果,线性关系高度显著。对比分析了钛合金常温干式切削和低温冷风降温切削的主切削力,发现钛合金低温冷风降温切削相对于常温干式切削,主切削力虽然较大,但变化范围较小,有利于提高工艺系统的稳定性,适宜精密加工;提出钛合金低温冷风降温精密切削加工,为了减小主切削力,获得理想的精度、表面质量和切削效率,可选用较高的切削速度,较大背吃刀量和较小的进给量。In order to explore the cutting rule of hard-to-machine material titanium alloy,multiple sets of parameters of titanium alloy cutting were combined through using uniform design method.The cutting forces were studied under the condition of 12℃dry cutting and-50℃cold blast machining.The exponential empirical formulas of cutting force applied to titanium alloy was established through linearization to the empirical formula of cutting force,and multiple linear regression analysis to experimental data.Variance analysis showed that these formulas have highly significant linear relationship.The results of test show that,although the main cutting force of cold blast machining is larger than dry cutting for titanium alloy turning,the range of the main cutting force is smallar.Therefore,compared with dry cutting,cold blast machining is better to improve the stability of the process system,it is suitable for precision machining of titanium alloy.It is proposed that higher cutting speed,greater depth of cut and smaller feed rate can be selected to reduce the main cutting force,to get a good precision,surface quality and machining efficiency in cold blast machining of titanium alloy.

关 键 词：钛合金 冷风加工 切削力 经验公式 均匀设计 

分 类 号：TG506.3[金属学及工艺—金属切削加工及机床]