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家用电器的插头外壳属阶梯筒形件,内径由Φ9.7±0.03 mm、Φ8.7±0.03 mm和口部Φ10.8±0.05 mm这3个尺寸组成,总高为24.5 mm,其尺寸精度要求较高。通过对插头外壳的阶梯拉深成形工艺特点进行分析及计算,设计了连续拉深冲压工艺并确定了拉深成形工艺参数。介绍了14工位双侧载体、内外圈切口及3点搭边的排样设计图、模具结构设计特点以及模具制造工艺,以列表形式对各模板的材料选用、热处理硬度及线切割加工工艺作了说明。拉深成形试验表明,该模具配合拉料形式代替送料方式,可以实现自动化生产,模具结构安全可靠,成形试件质量合格。
Household appliances plug shell is a stepped cylinder, the inner diameter of Φ9.7 ± 0.03 mm, Φ8.7 ± 0.03 mm and mouth Φ10.8 ± 0.05 mm of these three dimensions, a total height of 24.5 mm, the dimensional accuracy Higher requirements. By analyzing and calculating the characteristics of step drawing process of plug shell, the drawing process of continuous drawing is designed and the parameters of drawing process are determined. The paper introduces the layout design of double-sided carrier, inner and outer ring incision and 3-sided lacing, the design features of mold structure and the mold manufacturing process of 14 stations, the material selection, heat treatment hardness and wire cutting process The explanation. Deep drawing test shows that the mold can meet the need of feeding instead of feeding, which can realize automatic production. The mold structure is safe and reliable, and the quality of the formed test piece is qualified.