目前塑料模、冷冲模、压铸模等各种模具,其型腔、芯型(冲头)与模板连接时,以两个销子定位的形式应用较多(下面以冷冲模为例)。当凸、凹模更换后仍用原模板或模架时,要求凸、凹模或其固定板上两销孔位置必须与模座上两销孔位置完全一致,尤其有导柱的模架,要保证凸、凹模间隙均匀,这给加工带来很大难度,造成一般模架没有重复使用性,这在产品多品种少批量生产的情况下,是很不经济的。采用如图所示的定位方式,可以在凸、凹模更换后,模架可重复使用,省去了上、下模板、导柱、导套和模柄的加工,节约了材料和工时。对于凸、凹模上的两销孔的孔距精度要求不高,而且凸、凹模间隙在装配时易调整。衬套用碳素工具钢制作,HRC58～62, 与模板按H7/K6配合。塞堵不淬火,与凹模按 At present, plastic mold, cold die, die-casting molds and other molds, the cavity, the core (punch) and the template connection, the two pin positioning in the form of more applications (the following to die) as an example. When the convex and concave die still use the original template or mold base replacement, the requirements of convex, die or fixed plate pin hole location must be exactly the same with the two pin holes on the mold base, in particular, To ensure that the convex, die gap uniform, which brings great difficulty to the processing, resulting in the general mold is not reusable, which in the case of a small variety of products under production is very uneconomical. Adopting the positioning method as shown in the figure, the mold frame can be reused after the convex and the concave mold are replaced, and the processing of the upper and lower mold plates, the guide column, the guide sleeve and the mold shank is saved, thereby saving material and man-hours. For the convex, die hole on the two pinhole accuracy is not high, and convex, die gap in the assembly easy to adjust. Bush made of carbon tool steel, HRC58 ~ 62, with the template by H7 / K6 with. Plugging is not quenching, and die press