贵刊1986年第4期刊登《大螺距滚珠螺母在普通车床上的拉削》,简称《拉削》一文。现就拉刀中径取值及拉削方式等问题与韩裕生,来永祥两同志商榷。一拉刀螺旋角及导程为了方便排屑和使刀齿两侧前角相等,拉刀螺旋状容屑槽的螺旋角应等于工件螺纹中径上的螺纹升角,其旋向与工件螺纹的旋向相反。螺旋角相当于刀 Your magazine in 1986 No. 4 published “large pitch ball nut in the ordinary lathe broaching”, referred to as “broaching” article. Now broach median diameter and broaching methods and other issues with Han Yusheng, Lai Yongxiang two comrades to discuss. A broach helix angle and lead In order to facilitate chip removal and the teeth on both sides of the rake angle equal, broach helical chip flute spiral angle should be equal to the thread diameter on the workpiece thread angle, its rotation and the workpiece thread The opposite of rotation. Helix angle is equivalent to the knife