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1.住友金属工业(株):阶梯轴的冷锻制造方法(特开昭56—74343)(见图1) 成对上下拼合的凹模1,由前端可动凹模2和后端固定凹模3组成,并由螺旋弹簧4连结。另外,在可动凹模2和固定凹模3之间,配置有可进退而保持凹模2、3的轴向间隙用的楔块5。6是凸模。 首先,把所需长度的被加工轴插入上下凹模孔中,再用楔块5插入的状态保持凹模
1. SUMITOMO METAL INDUSTRY CO., LTD.: Cold Forging Manufacturing Method of Stepped Shaft (Japanese Unexamined Patent Publication No. 56-74343) (See Fig. 1) The female die 1, which is joined in pairs in upper and lower directions, is composed of a front end movable die 2 and a back- Die 3, and by the coil spring 4 link. In addition, a wedge piece 5.6 for allowing the axial gap between the female molds 2 and 3 to move forward and backward is disposed between the movable mold 2 and the fixed mold 3, and is a male mold. First, the desired length of the shaft to be machined into the upper and lower die hole, and then insert the wedge 5 to maintain the state of the die