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壳体 冲压 工艺 拉伸 复合 模具设计

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壳体冲压工艺及l落料拉伸复合模具设计,壳体,冲压,工艺,拉伸,复合,模具设计

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壳体冲压工艺及模具设计 摘 要：本设计题目是壳体落料拉深复合模，体现了带窄凸缘筒形零件的设计要求、内容及方向，具有设计意义。通过对该模具的设计，复习了我的冲压模具设计的基础知识，为今后设计更复杂的冲压模具做好了铺垫。 本设计运用冲压工艺及模具设计的基础知识，首先分析了制件的形状及生产可行性，为合理选取冲压工艺方案做好准备；然后估算了落料毛坯的体积，便于排样；最后分析模具结构，确定模具的设计参数、设计要点及卸料装置的选取。本制件是带窄凸缘的筒形件，选择合适的压边力是极为重要的，它具体应在保证不起皱的前提下取最小值。卸料板在落料前兼起压料作用。 本复合模具先由凸凹摸与落料凹模进行落料工序，后由凸凹摸与拉深凸模进行反向拉深工序。模具结构属于正装式复合模，比较适宜本制件的成形。此外，在排样的工作中力求板材利用率达到较高的水平。关键词：落料拉深复合模 反拉深 拉深间隙 窄凸缘筒形件 The Pressing Process and Die Design for the Shell ABSTRACT： The topic of the design is a shield produced by compound blanking and drawing dies, it is according to the requirements 、the contents、also the directions of cylindrical part which has a narrow flange. And it is of great significance. Throughing the die design of this part, my foundation knowledge of die design was enriched a lot. It will be helpful for my laters die-designing which are more difficult, in addition, I have gain countless experience .The design using blanking technique and foundation knowledge of die design, first by analysising the shape of the part and feasibility of producing. All have done are making preparation for reasonable selection of blanking technique scheme . Then calculated the volume of the blank flat,so it is simple for layout designing. Finally anlysised the die structure,confirmed the die designing parameter 、designing essences and selecting tripper.This part is a cylindrical part with a narrow flange, so tomake a suitable pressure-pad-force is very important. After make sure it will not wrinkle, it should be selected a minimum. The stripper also is act as a pressure-pad. First the compound die and blanking die doing the blanking process, then the compound die and the drawing punch doing the reverse drawing process, the structure is belonging to the simple compound die .It is quite suitable for this part s forming. Furthermore, during the layout-design I try my best to make the sheet-utilization at a rather hign level