对非元形冲件的冲裁凸模(图1),为了加工方便,设计者常常将固定部分设计成元柱形,因而必须采取特殊的定位措施,以防止凸模发生转动。否则,在使用时将会造成严重的事故。以下介绍常用的防止凸模转动的各种方法,以供参考。一、垂直销丁防止转动图2结构为最简单和最常用的方法。在凸模肩部和凸模固定板之间钻孔,并压装骑缝元柱销,销长与固定板厚度相同。为了拆换方便,亦可采用图3所示结构。由于钻有半个骑缝孔的凸模,在拆卸 For non-meta punch blanking punch (Figure 1), in order to facilitate the process, designers often design the fixed part into a pillar-shaped, and therefore must take special positioning measures to prevent the punch from turning. Otherwise, it will cause serious accident when using. The following describes the various commonly used to prevent the rotation of the punch method for reference. First, the vertical pin Ding to prevent the structure of Figure 2 is the simplest and most commonly used method. Drill holes between the punch shoulders and the punch mounting plate and press fit the sewing pin, with the same pin length as the mounting plate. In order to facilitate the demolition, you can also use the structure shown in Figure 3. As a result of drilling half a punch hole punch, the demolition