我厂螺纹车间生产圆滚模的批量比较大,而滚模技术要求又比较高:齿面光洁度▽8,任意两齿距偏差±0.01,全长累积偏差0.015,节径和外径跳动0.02,齿形角误差±20＇。为了满足生产需要,我们将一台报废的M120型外圆磨床改装为可磨削环形螺纹的机床。改装后的机床是以切入法来滚压环形螺纹,见图1。改装部分如下:主要将砂轮主轴的滑动轴承改为静压轴承,并增加多圈砂轮滚压装置(这两种改装已 The production of circular rolling mold in our factory is relatively large, while the technical requirements of rolling mold are relatively high: the tooth surface finish ▽ 8, the deviation of any two pitch ± 0.01, the cumulative deviation of full length 0.015, the pitch diameter and outer diameter runout 0.02, Tooth angle error ± 20 ’. To meet production needs, we converted a scrapped M120 cylindrical grinding machine into a ring-sharpened machine. The modified machine is rolling into the law to cut the ring thread, shown in Figure 1. Modified part as follows: The main spindle bearings to hydrostatic bearings, and increase multi-wheel grinding wheel rolling device (these two modifications have been