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精密冲裁是一种先进的少无切削加工工艺,它能在一次冲压工序中获得精度高、光洁度好、切剪边沿毛刺小、塌角小、不平度小的冲压零件。一般经精密冲裁后的零件不需经过机械加工而直接进行装配,这样就大大提高了生产率。国外已广泛用于打字机、计算机、钟表、照相机、电器、航空及汽车拖拉机等部门。文化大革命以来,我国广大工人和科技人员发扬自力更生、艰苦奋斗的精神,在普通压力机或液压机上进行了精密冲裁工作,取得了显著的成绩。但是,普通设备不能很好地满足精密冲裁工艺的要求,在一定程度上影响了这一先进工艺的普遍采用。为了进一步推广精密冲裁工艺,一机部给内江锻压厂下达了Y99-
Precision blanking is an advanced less non-cutting process, which can be obtained in a single stamping process with high precision, good finish, cut the edge burr is small, small angle, unevenness of small stamping parts. After the general precision blanking parts without machining directly assembled, thus greatly improving productivity. Foreign countries have been widely used in typewriters, computers, watches, cameras, electrical appliances, aviation and automotive tractors and other departments. Since the Cultural Revolution, the vast majority of workers and scientific and technical personnel in our country have carried forward the spirit of self-reliance and hard work, and have made fine blanking work on ordinary presses or hydraulic presses and achieved remarkable results. However, ordinary equipment can not meet the requirements of precision blanking process, to a certain extent, affected the widespread adoption of this advanced technology. In order to further promote the precision blanking process, a machine to Neijiang Forging Factory issued a Y99-