Ceramic cutting tools at high temperature can produce self-lubricating phenomenon, which can play a friction and anti-wear effect role. In this paper, take the A1,O3ceramic cutting tool for an example. In the high temperature situation, the surface of tool can produce the self-lubricating film. With the help of finite element analysis DEFORM-3D,building a HSM cutting AISI-1045 model,for seeking for the speed of the lubrication phenomenon which can produce the self-lubricating phenomenon and researching for cutting the principal cutting force、 stress distribution, the temperature distribution on the rake face and tool wear state, etc. Research shows that; when cutting speed is 270 m/min, the temperature of cutting tool surface is as high as 842 ℃, which can produce self-lubricating phenomenon.%陶瓷刀具在高温作用下会产生自润滑现象,可起到减摩、抗磨作用.论文以Al2O3陶瓷刀具为例,在高温下刀具表面产生自润滑薄膜,利用有限元分析软件DEFORM-3D,建立高速切削AlSI——1045模型,分析Al2O3陶瓷刀具在高速切削加工时,产生自润滑现象所需切削速度,以及在高速切削时,刀具表面的主切削力、应力分布、温度分布和刀具的磨损状态等.研究表明:当切削速度为270m/min,时,刀具表面温度高达842℃,能够产生自润滑现象.
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