高硬度合金铣削力预测研究进展

高硬度合金材料因其较高的比强度、优异的耐腐蚀和耐热性能,广泛应用于各个领域。但在实际加工过程中,由于热导系数低、弹性模量小、单位面积切削力大、刀-屑接触面积小等特性,其加工一度成为研究的难点与热点。从传统铣削和微铣削的不同加工机理出发,对高硬度合金材料铣削力建模并进行探讨。阐述了铣削力系数、铣削速度、刀刃圆弧半径、刀具跳动和挠性变形对铣削力预测的影响,分析了高硬度合金材料铣削力预测中的一些热点与难点以及目前铣削力建模存在的问题。

A Review of Milling Force Prediction on High-hardness Alloys

High-hardness alloys are widely used in various fields because of their high specific strength,excellent corrosion resistance and heat resistance.However,due to the low thermal conductivity,small elastic modulus,large cutting force per unit area and toolchip contact area,the machining process becomes a difficulty and hot spot in the process of practical processing.From the different machining mechanisms of traditional milling and micro-milling,this paper discusses the modeling of milling force of difficult materials,describes the effect of force coefficient,milling speed,cutting edge arc radius,tool run-out and flexible deformation on the milling force prediction and analyes,the hot and difficult points and the problems existing in the present modelling of the milling force.