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采用斜刃凸模和凹模冲裁板材,这在矿山机械、汽车、拖拉机等制造行业的冲压加工中已普遍应用,尤其是对板厚在4毫米以上,或周长较大的大型板制件,采用斜刃冲裁更有其优越性。为了简化各种斜刃的复杂的计算公式,这里设计了几种诺莫计算图表,供从事冲压工艺制订和模具设计的技术人员以及冲压工人参考使用。一、单面斜刃剪切力1.单面斜刃剪切力计算公式当 H>t时(H 为斜刃高低差,t 为料厚):
The use of oblique edge punch and die blanking plates, which in the mining machinery, automobiles, tractors and other manufacturing industries stamping has been widely used, especially for the plate thickness of 4 mm or more, or larger perimeter of the board Pieces, using oblique edge blanking more its superiority. In order to simplify the complicated calculation formulas of various oblique edges, several NoMo calculation charts are designed here for reference of technicians and stamping workers engaged in stamping process design and mold design. First, the shear strength of single-sided oblique edge 1. Single-sided oblique edge shear force formula When H> t (H is the oblique edge height difference, t is material thickness):