类似QJ-40型钢筋切断机的冲切刀座及刀片,其结构都相似,我在使用修理过程中发现,冲切刀座及刀片存在如下问题: 1.刀床面容易形成拱弧面(见图1)。其主要原因(1) 床面短,刀刃端伸出长达22.5mm,由于刀刃伸出过长,就难以克服冲切产生的横向压力,也就是说,刀刃伸出越长,床面支承点承受的压力就越大,(2)床面中心没有退屑槽。更换刀片时,床面、 Similar to the QJ-40 rebar cutting machine, the punching cutter seat and the blade are similar in structure. I found during the repair process that the punching cutter seat and the blade have the following problems: 1. The cutter bed surface is easy to form arching surfaces ( see picture 1). The main reasons are as follows: (1) The bed surface is short, and the blade end protrudes as long as 22.5mm. It is difficult to overcome the lateral pressure caused by punching because the blade extends too long. That is, the longer the blade extends, the bed support point The greater the pressure, (2) There is no flute in the center of the bed. When the blade is changed, the bed surface,