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用聚氨酯冲裁模冲裁较大特型薄板件时,必须进行力的计算及平衡,设计结构要合理,这样才能得到高质量的零件,制模费用约可降低40％。我们曾冲制如图1的零件。 零件的内外型不规则,料厚0.2mm尺寸精度要求较高。零件最窄的宽度理论上1.5mm,实际上只1.3mm,内外型凸块16等分要求均等,此零件年产量较大。按冲裁力公式计算,冲外形时需用冲裁力P_(外冲)=1485kg:而P_(内冲=2266kg,内形冲裁力比外形冲裁力大781公斤。
With polyurethane blanking die blanking larger special-shaped plate, the force must be calculated and balanced, the design structure to be reasonable, so as to get high-quality parts, molding costs can be reduced by about 40%. We have punched the parts shown in Figure 1. Irregular internal and external parts, material thickness 0.2mm higher dimensional accuracy. The narrowest part width of 1.5mm in theory, in fact only 1.3mm, internal and external bumps 16 equally divided equally, the larger the annual output of this part. According to the formula of blanking force, the punching force is required when blanking profile P_ (outer punch) = 1485kg: and P_ (inner punch = 2266kg, blanking force than the shape of the blanking force of 781 kg.