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我厂1984年买了一台J82—1型纵剪机,该机带有滚剪刀。开机后不久,电工钢片的毛刺便严重超差,刀刃磨后仍然有问题。其主要原因是:对刀的经验不足;滚刀的精度和结构不理想;磨刀心轴的制造精度有问题。于是开始考虑怎样改进滚剪刀和另行加工新心轴。 1.刀具刃口的改进厂里配置了一套新滚刀,而且采用北京粉末冶金研究所研制的DT钢结硬质合金新材料作刀片。原刀片刃口的角度约是88°,这种刀开始使用时比较锋利,但刃磨时既困难又麻烦。两
I bought a factory in 1984 J82-1 type slitting machine, the machine with a rolling scissors. Shortly after power on, the burrs on the electrical steel sheet will be seriously out of tolerance and there is still a problem after the blade is sharpened. The main reason is: lack of experience on the knife; Hob accuracy and structure is not ideal; Sharpening mandrel manufacturing accuracy problems. So began to consider how to improve the rolling scissors and processing new mandrel. 1. The improvement of the cutting edge The factory is equipped with a new hob, but also with the Beijing Institute of Powder Metallurgy DT hard knurl new material for blade. The original blade edge angle of about 88 °, this knife began to use more sharp, but the grinding is difficult and troublesome. Two