不同冷却润滑条件下TB6钛合金高速铣削切削力实验研究

摘要

为研究冷却润滑介质及切削参数对TB6钛合金切削力的影响,在干式、低温冷风、常温微油雾3种冷却润滑条件下进行涂层硬质合金绿色切削TB6钛合金试验.通过多元回归分析法,建立3种冷却润滑条件下切削力的经验公式,研究工艺参数对切削力的影响.研究表明,相同工艺参数下,干式切削切削力最大,低温冷风次之,微油雾润滑条件下的切削力较干切降低20％.采用硬质合金刀具铣削TB6钛合金,应选择微量油雾作为冷却润滑介质,切削参数应选择大的切削速度和径向切深,适当的进给量和轴向切深.%High-speed cutting TB6 titanium alloy test were conducted with coated carbide tools.It is established the empirical formula of cutting force under three situations of dry type,low temperature air,and normal temperature tiny mist though the multiple regression analysis and it is studied the parameters affect on cutting speed.The studies show that in the same parameter the maximum the dry type cutting force,the low temperature air in the middle,compared with the dry type,the cutting speed is reduced by 20％ under the tiny mist lubricating.Adapt coated carbide tools to milling TB6 titanium alloy,it's better to choose the tiny mist as the cooling lubricating medium,the cutting parameter should choose the high speed cutting speed and the radial cutting depth of and give the appropriate feeding speed and axial depth.