一级和二级绮度零件的最後加工用磨削法时,一般要进行几次的调整,这样难於达到技术条件所要求的被加工表面的同心度,在较低的切削规范下与因为经常修整砂轮及进行机床调整,耗费了大量的辅助时间,生产率是不够高的。 要提高产量而不增加机床数量,一系列二级精度零件的加工就改为 The first and second grade parts of the final processing with the grinding method, the general to be adjusted several times, it is difficult to achieve the technical conditions required by the concentricity of the surface to be machined, with lower cutting specifications and because Regular dressing wheel and machine adjustment, spent a lot of auxiliary time, productivity is not high enough. To increase production without increasing the number of machines, the machining of a series of secondary precision parts was changed to