目前我厂生产DT—65VB及汽车收录机芯。1毫米左右的板料冲压件产量很大。由于目前冷冲模在制造精度,模具材料以及热处理等方面的原因,寿命普遍较短。每修磨一次的产量一般1～2万件,只有极少数才达5万件。送磨刃口的原因都是毛刺太大。为了解决这个问题,我在“模具工业”第二期63页上“无毛刺冲裁”一文中得到启发。对个别模具作了改进,取得满意效果,供大家参考。 At present, I plant production DT-65VB and car included movement. About 1 mm sheet metal stamping a large yield. Due to the current die in manufacturing precision, mold materials and heat treatment and other reasons, the life expectancy is generally shorter. The output of each grinding time is generally 1 to 2 million, only a very small number of up to 50,000. The reason for sending grinding edge is too much burr. To solve this problem, I was inspired by the article “Burr-Free Punching” on page 63 of the second issue of Die & Mold Industry. Individual mold made improvements to obtain satisfactory results for your reference.