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车轮的材料利用率很低,只有定额的43%。为此,我们根据对废料尺寸、形状及数量的分析,产生了用废料冲U形螺栓压板的设想。如实现,每块可冲制3～4块压板。试冲螺栓压板时,发现其平面度较差。分析原因,是由轮辐中心孔冲裁波浪刃口太大所致。废料经轻微校平后,再进行试验就得到了合格产品。由此可知,刃口虽仍要保留斜度,但勿过大,波浪形也应适当减少。利用废料进行冲裁时,冲裁力和卸料力都很大,仍用上模打料方法退料是不合适的。为此,采用弹性系数远较普通冲模弹簧大的
The material utilization of the wheel is very low, only 43% of the quota. For this reason, based on the analysis of scrap size, shape and quantity, we have created the idea of scraping U-bolts with scrap. If achieved, each can be made from 3 to 4 platen. When trying to punch bolt platen, found that the flatness is poor. Analysis of the reasons is punched by the spokes of the center hole wave cutting too much. Scrap slightly after leveling, and then tested to get the qualified product. It can be seen, although the blade edge to retain the slope, but not too large, the wavy shape should be appropriately reduced. Blanching waste, the blanking force and unloading force are still large, still use the punch material feeding method is not appropriate. To this end, the use of elastic modulus far larger than the ordinary die spring