论文部分内容阅读
精冲技术发端于二十年代之初,取得突破则是在六十年代以后。瑞士、西德和日本从实践和理论两方面率先致力于开拓与研究,推动了精冲技术的发展。加工对象精密冲裁的一个引人注目的动向是实现了16mm左右厚板料的批量生产,抗拉强度达93.5 kgf/mm~2的高强度钢之类硬质材料的精冲实例明显增多,冲孔直径和沿边尺寸小于板厚的情况亦不在少数。精冲1.5mm厚的黄铜,零件外径157mm、小孔直径5±0.02mm、小孔总数580个、
Jing Chong technology originated in the early 1920s, made a breakthrough is in the sixties. Switzerland, West Germany and Japan took the lead in practice and theory to devote themselves to exploration and research and promoted the development of precision blanking technology. A striking trend of the precision blanking of the processing object is the mass production of about 16mm thick sheets, and the fine blanking examples of hard materials such as high-strength steel with a tensile strength of 93.5 kgf / mm ~ 2 are obviously increased, Punching diameter and edge size is less than the thickness of the case is not unusual. Fine blanking 1.5mm thick brass, parts diameter 157mm, hole diameter 5 ± 0.02mm, the total number of holes 580,