我厂电机硅钢片的复式冲模其凹模系由电火花穿孔而成。上电极(即凸模)原来采用齿盘式卡具将各凸模组装在一起。由于我厂加工能力所限,齿盘卡具的垂直精度和等分精度,尤其各凸模之间的互换性等方面都难以达到要求,因此装卡后需要钳工逐一校核捻正,费时很多且精度不易保证。考虑电加工过程中电极之间的机械力不是很大,我 I plant motor silicon steel composite die of the die by the EDM perforated. The upper electrode (ie, punch) the original use of gear plate fixture will be assembled together the punch. Due to the limited processing capacity of our factory, the vertical accuracy and bisector accuracy of the gear plate fixture, especially the interchangeability between each punch are difficult to meet the requirements, so the fitter need to check the twist one by one, time-consuming A lot and accuracy is not easy to guarantee. Consider the mechanical force between the electrodes in the electrical process is not very large, I