在超精切削时各种因素对表面光洁度的影响在国内是一个研究较少的领域,本研究工作用硬质合金车刀进行有色金属切削达到表面光洁度▽13级(Hb2黄铜)或▽12c级(Ly12—CZ硬铝)。应用价格低廉的硬质合金车刀进行这样高的光洁度的切削是有很大的经济意义的。经过研究试验对刀具材料提出了要求:切光能力高、切薄能力好,经久耐用。为了达到这些要求希望刃口要锋利、刃口圆弧半径ρ要小、刀面光洁度要高、刃口不平度要小,不能 In the super fine cutting various factors on the surface finish in the country is a less studied areas, the research work using carbide cutting tools for non-ferrous metal cutting to achieve surface finish ▽ 13 (Hb2 brass) or ▽ 12c Grade (Ly12-CZ duralumin). It is of great economic importance to use such a low-cost carbide cutting tool for cutting such a high finish. After research experiments on the cutting tool material requirements: cutting ability, cutting thin ability, durable. In order to meet these requirements, the cutting edge should be sharp, the radius of edge arc ρ should be small, the surface finish should be high, the edge roughness should be small,