拉削加工方法在成批和大量生产中得到广泛使用。近年来,在小批生产中,具有一定精度的花键孔、键槽、圆孔等都采用拉削。在现代化的自动线上,拉削工艺也得到了应用。工厂中的圆孔拉刀在经过多次刃磨后,加工出的孔内表面质量往往很差,呈鱼鳞,且拉刀易发热、易断。是拉刀刃磨的不 Broaching methods are widely used in mass and mass production. In recent years, in a small batch of production, with a certain degree of precision spline holes, keyways, round holes, etc. are used broaching. In the modern automatic line, broaching process has also been applied. Round hole broach in the factory after repeated sharpening, the processing of the hole surface quality is often poor, was fish scales, and broaches easy to heat, easily broken. Is broaching sharpening is not