随着国民经济的飞速发展和社会主义革命及社会主义建设的迫切需要,我国的仪表、无线电、电机等产品的品种、数量正不断地增加。为了提高效率,提高质量,降低成本,对各种产品所需零件的工艺、质量的要求也提高了,冲压生产也必须用更高的速度,生产出符合要求的冲压件来满足工业生产的需要。 With the rapid development of the national economy and the urgent need of socialist revolution and socialist construction, the varieties and quantities of instruments, radios, motors and other products in our country are constantly increasing. In order to improve the efficiency, improve the quality and reduce the cost, the requirements on the process and quality of the parts required for various products are also raised. The stamping production must also produce the stampings with the required speed to meet the needs of industrial production at a higher speed .