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为了使凸、凹模之间的间隙值,符合图纸的要求,为了保证凸模四周间隙均匀分布,各厂分别采用了垫铜皮、镀铜、涂淡金水和涂漆等不同的工艺方法。一、垫铜皮控制凸、凹模间隙的工艺方法将凸模与凸模固定板固定后,在平面磨床上磨平,使凸模的上端面与凸模固定板上平面在同一平面上,然后翻身磨凸模刃口平面。在凸模固定板与凹模平面之间两边垫以等高度的垫块,将凸模放入凹模孔内,按凸模与凹模间隙配合的要求,用0.03毫米～0.04毫米紫铜片叠加垫在凸模与凹模之间的空隙中,深度为10～12毫米。如图1所示。
In order to make the gap between the convex and concave die, in line with the requirements of the drawings, in order to ensure uniform distribution of the gap around the punch, the factory were used pad copper, copper, painted gold water and paint and other different methods. First, the pad copper control convex, die gap process After the punch and punch fixed plate is fixed, polished in a flat grinder so that the upper surface of the punch and the punch fixed plane on the same plane, Then stand up grinding punch edge plane. In the punch between the fixed plate and the die plane on both sides of the pad with the same height pad, the punch into the die hole, press the die and the die gap with the requirements of 0.03 mm ~ 0.04 mm copper sheet superimposed Pad in the gap between the punch and die in the depth of 10 to 12 mm. As shown in Figure 1.