有些零件要求车削二端面、镗内孔、车削两至三个台阶外径尺寸,以及在外圆上切出一至两条环槽。由于须经常换刀,所以很费时间。如采用本文介绍的开槽弹性胀轴几乎可节省一半加工时间。图示零件的内孔尺寸为φ19.05毫米(0.75英寸),可 Some parts require turning two end faces, boring bores, turning two to three step outside diameters, and cutting one to two ring grooves on the outer circle. Due to frequent tool change, so it takes time. Such as using the slotted elastic expansion shaft introduced in this article can save almost half the processing time. The hole size of the part shown is φ19.05 mm (0.75 inch)