中小型变压器生产中常遇到单面敞开型冲裁件。此类工件在冲裁时,由于总有一面是单面冲裁,所以在板料对凸凹模刃口的侧压力P_1和P_2作用下,必然迫使凸模与凹模向相反的方向错开,间隙值增大,影响产品质量和模具寿命。甚至由于间隙的增大而影响生产的正常进行。据有关资料介绍,解决此类问题的办法,一般都是采用反侧装置或增加导向机构的方法。但这样做会使模具结构复杂化,同时增加了模具的制造费用,延长模具的制造周期。笔者根据自己的工作实践,设计了如图4、图5所示的 Small and medium-sized transformers often encountered in the production of open-type blanking pieces. Such blanking when the workpiece, because there is always one side of the blanking, so the plate punch and die edge pressure P_1 and P_2, inevitably forced the punch and die in the opposite direction staggered, the gap Value increases, affecting product quality and mold life. Even as the gap increases affect the normal production. According to relevant information, solutions to such problems are generally based on the use of anti-side devices or methods to increase the guidance mechanism. However, this will complicate the mold structure, while increasing the cost of mold manufacturing, mold extension to extend the manufacturing cycle. According to my own work practice, the author designed as shown in Figure 4, Figure 5 shows