端面开槽的圆柱工件(图1)在汽车上应用较多,而且均用在十分重要的部位。如解放CA10B型、跃进NJ130型、交通SH141型等汽车上的转向节销,跃进NJ130型汽车的钢板弹簧销及吊耳销等,因装配调整的需要,均在一端开有起子槽。这些轴类零件加工精度较高,其表面光洁度均在▽7以上,因此,需经磨削加工。在大批生产的制造厂,通常在无心磨 End-slotted cylindrical workpieces (Figure 1) are used more in cars and are used in very important areas. Such as the liberation of CA10B type, Yuejin NJ130 type, traffic SH141-type steering knuckles on the car, such as spring into the NJ130-type steel plate spring pins and lifting pins, etc., due to the need to adjust the assembly, are open at one end of the slot driver. The machining accuracy of these shaft parts is high, the surface finish is above ▽ 7, therefore, need to be grinding. In mass-produced manufacturing plants, usually at the heartless mill