论文部分内容阅读
从提高模具的使用寿命观点来言,在设计转子片槽孔冲模时,总是力求使冲头长度最大限度地增加。但是,对于中小型电机,尤其是小型低速电机,由于转子槽数多,槽形尺寸很窄,如果冲头长度设计过长,在很大的冲击载荷作用下,冲头自由端产生位移,这不仅使冲裁质量受到影响,而且还会使冲头纵向失稳弯曲,导致冲头弯折损坏、模具报废。因此转子槽孔冲头不失稳计算是模具设计中的关键之一。 转子槽孔冲头不失稳计算与一般园形及规则截面冲头的计算不同,其惯性矩在手册
From the viewpoint of improving the service life of the mold, it is always sought to maximize the punch length in the design of the rotor blade slot die. However, for small and medium-sized motors, especially small low-speed motors, due to the large number of slots in the rotor, the groove size is very narrow. If the length of the punch is too long, the free end of the punch is displaced under a large impact load, Not only the quality of the blanking is affected, but also the punch will buckle longitudinally, causing the punch to be damaged and the die scrapped. Therefore, the rotor slot punch punch stability calculation is one of the key design. Rotor slot punch does not destabilize the calculation of the calculation and the general circular and regular section punch different from the moment of inertia in the manual