手柄花键套是我厂工农—11型手扶拖拉机液压悬挂部件中的零件之一(图1),材料是45号钢棒料。旧工艺采用车削加工,单件坯料需257克,要经过车端面、钻孔、倒内外角、调头车准总长、倒内外角、拉花键等多道工序。机加工成形后零件仅重163克,材料利用率只有63%,加工工时8.5分钟。真是费料、费工又费时。 Spline sleeve handle I plant workers and peasants -11 walking tractor hydraulic suspension parts of the one (Figure 1), the material is 45 bar material. The old process using turning, single piece of billet to be 257 grams, to go through the car face, drilling, down inside and outside the corner, the total length of the car head alignment, inverted inside and outside the corner, pull the spline and many other processes. Machined parts weighing only 163 grams, material utilization rate of only 63%, 8.5-hour working hours. Really wasteful, laborious and time-consuming.