前言 如所周知,电机铁芯对于定转子冲片内外圆的同心度、槽形的同一性和槽距的均匀性等都有着特殊的较高冲裁要求;同时由于其槽形型式的不同,冲片外径的大小、精度要求的高低以及剪冲车间的冲压设备能力和模具制造水平等等的差异,对其可按不同条件选择各种各样的冲裁工艺。为此,对模具也相应需要设计出多种类型的结构形式来满足其要求。特别是生产批量的多少,更是直 Preface As we all know, the motor core for stator and rotor inner and outer circle of concentricity, groove shape and the uniformity of groove pitch has a special high punching requirements; the same time due to the different groove shape, The size of the punch outside diameter, the level of precision required and the ability of the punching shop stamping equipment and mold manufacturing level and so on the difference, according to their different conditions can choose a variety of blanking process. To this end, the mold also need to design a corresponding type of structure to meet their requirements. In particular, the number of production lots, it is straight