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套式件磨削,常采用先磨内径,再用芯棒磨削外径的工艺方法。而冷冲模如图1所示,零件其内径磨削长度只有5～6mm,尤其是碰到批量生产,只得采用三爪夹头夹紧,用内外径(即工艺1,工艺2)交换磨削的工艺流程。如图1所示。其缺点为,由于内外径的交换磨削,必须将内磨头翻上翻下,不仅增加劳动强度。而且生产效率极低,更主要的是定位精度降低。为此我们制作了一种适宜冷冲模内径磨削的快速定位夹具。 1.快速定位磨夹具及磨削工艺
Set of pieces of grinding, often used first grinding diameter, and then grinding the outer diameter of the core rod process. The die is shown in Figure 1, the grinding length of the inner diameter of the part is only 5 ~ 6mm, especially hit mass production, had to use three claw chuck clamping, with the outer diameter (ie, Process 1, Process 2) exchange grinding The process. As shown in Figure 1. The disadvantage is that, due to the exchange of internal and external grinding grinding, the internal grinding head must turn upside down, not only increase the labor intensity. And the production efficiency is extremely low, more importantly, the positioning accuracy is reduced. To this end we have made a suitable cold die diameter grinding fast positioning fixture. 1. Rapid positioning grinding fixture and grinding process