我厂生产的方向机,其中滑阀梯形内螺纹,原来采用车刀加工,效率很低,每班仅能车二个,螺纹表面粗糙度只达到(?)。这样低精度的滑阀与丝杠装配时必须手工配研,且配研时间很长,劳动量相应增如。因此,我厂技术人员设计出提高工效25倍,表面粗糙度可降低到(?)的大螺旋角梯形螺纹拉削刀具,经试拉获得成功。采用拉削工艺方法加工出的滑阀与丝杠装配时,手工配研的时间大大缩短了,劳动强度也大大降低。 I plant the production of the direction of the machine, including trapezoidal valve trapezoidal thread, the original use of turning tools, the efficiency is very low, only two cars per class, thread surface roughness only reached (?). Such low-precision slide valve and screw assembly must be manual with the research, and with a long time, labor corresponding increase. Therefore, our factory technicians designed a large spiral angle trapezoidal thread broaching tool with 25 times higher work efficiency and lower surface roughness (?), Which achieved success through trial and pull. The use of broaching process to process the valve and screw assembly, the manual with research greatly reduced the time, labor intensity is greatly reduced.