我厂生产的汽车拖拉机用起动机轴(图1),原来是采用滚花法生产的。现在采用冲纹法,效果较好。一、模具结构与调整方法图2是该工艺的轴用冲纹模具。上、下模的对准可以通过图3所示的校模块进行调整。将校模块先放入下大凹模9的刃口槽内,缓慢放下上大凹模 I plant the car tractor with the starter shaft (Figure 1), the original is the use of knurled production. Now the use of stamping method, the effect is better. First, the mold structure and adjustment method Figure 2 is the shaft of the process with the red mold. Upper and lower mold alignment can be adjusted by the calibration module shown in Figure 3. Put the module of the school into the slot of the lower die 9 first, and slowly lower the upper die