在无心磨床上磨削螺钉的螺纹部份滚丝前外圆时,如螺钉角买已铣好,或外露部份太长时,就给操作带来麻烦,这时可用如图所示方法来解决。在操作时通常使托板与导轮间的距离不变,而砂轮作进给运动。片簧用来支持工件,使其轴心线与砂轮轴心保持平行。片簧力不能过大,过大时会影响磨削效果;当支承力不够时,可增加片簧的片数。 Grinding the center of the screw thread grinder in the centerless grinder before the outer circle, such as the screw angle to buy has been milling, or exposed part of the long, give trouble to the operation, then available as shown solve. In operation, the distance between the support plate and the guide wheel is usually constant, and the grinding wheel is used for feeding motion. The leaf spring is used to support the workpiece so that its axis line is parallel to the axis of the grinding wheel. Sheet spring force can not be too large, too large will affect the grinding effect; when the supporting force is not enough, can increase the number of leaf spring.