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图1所示为W67Y-40G/2000液压板料折弯机的上模,每台折弯机上共有六件上模,其中一件又分割成长度不等的5小件,将这些长短不一的上模组合起来,安装在滑块上,可以对板料进行加工,形成各种形状零件。为了提高板料零件的精度等级,组合后上模的刀尖和刃口角度必须是一致的,其刀尖直线度允差不超过0.04mm。以前是以A和B两面作为基准加工上模的。将6件上模、组成一组,打上记号,放在一长夹具上,用导轨磨床进行磨削加工。这种方法磨削后,每组上模的刀尖和刃口角度是一致的,但有下列缺点:
Figure 1 shows the W67Y-40G / 2000 hydraulic plate bending machine die, each bending machine on a total of six upper die, one of which is divided into 5 pieces of varying lengths, these different lengths The combination of the upper mold, mounted on the slider, you can sheet processing, the formation of various shapes of parts. In order to improve the accuracy of sheet metal parts, the combination of the tool tip and edge angle must be consistent, the tip straightness tolerance of not more than 0.04mm. Previously based on A and B as a benchmark die processing. Will be six on the mold, a group, marked marked on a long fixture, grinding with a rail grinder. After grinding in this way, the tip angle and the cutting edge angle of each group of upper die are the same, but have the following disadvantages: