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1970年底,上级交给我们生产短线备件磨床主轴的任务。磨床主轴轴颈光洁度要求高达▽12,而我们厂没有高精度外圆磨床,经过反复模索,及时总结经验,终于用普通外圆磨床成批地生产了合格产品。一、用粗粒度砂轮进行超精磨的原理砂轮表面上各磨粒切刃的分布是杂乱无章参差不齐的。如以砂轮的最外圆周作为基准圆,各磨粒的顶峰并不都在基准圆上(如图1),磨粒切刃分布的这种状况称为微刃的不等高性。而每颗磨粒又有好几个切刃同时参加切削(如图
By the end of 1970, the superior handed over the task of producing the spindle of the short-term spare parts grinder. Grinder spindle shaft finish requirements up to ▽ 12, and our factory does not have high-precision cylindrical grinder, after repeated modeling, timely summary of experience, and finally with ordinary cylindrical grinder mass production of qualified products. First, the principle of super-fine grinding with coarse-grained grinding wheel The distribution of the abrasive cutting edge on the surface of the grinding wheel is disorderly uneven. Such as the outermost circumference of the wheel as a reference circle, the peak of the abrasive are not all in the reference circle (Figure 1), abrasive cutting edge distribution of this situation called micro-edge inequality. And each abrasive there are several cutting edge at the same time participate in cutting (Figure