机械5

U形件手推车轴碗的冲压成形工艺及模具设计【落料拉深复合模】 摘要：本设计题目为落料拉深复合模，体现了典型冲压复合模的设计要求、内容及方向，有一定的设计意义。通过对该模具的设计，加强了设计者对冲压复合模设计基础知识的理解和运用，为设计更复杂的冲裁模具做好了铺垫。 本设计运用冲裁工艺及模具设计的基础知识，首先分析了板材的性能要求，为选取模具的类型做好了准备；然后计算了冲裁件的冲裁力，便于选取压力机吨位及确定压力机型号；最后分析了冲压件的特征，便于确定模具的设计参数、设计模具结构零件及定位，卸件装置。 本设计采用了落料——拉深——复合模成形导向板。成形原理可划分为三个个阶段：凸模，凸凹模和落料凹模同时作用落料，弯曲成型。 关键词：复合模落料拉深压力机吨位 Trolleys axis bowl stampi
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nage 目录 摘要………………………………………………………………………………….1 1绪论……………………………………………………………………………………3 2手推车轴碗落料拉深模设计………………………………………………………..8 2.1工艺分析……………………………………………………………………………8 2.2工艺方案的确定…………………………….………………………...……............8 2.2.1拉深件毛坯尺寸的计算……….…………….…………….…………….…8 2.2.2拉深系数与拉深次数的确定…….…………….…………….…………….…9 2.3必要的工艺计算…………………………………….……………………...........10 2.3.1排样的计算……………………………………………….……………………10 2.3.2拉深凸、凹模工作部分尺寸的设计计算………………………………….12 2.3.3落料凸、凹模工作部分尺寸的设计计算……………………………………13 2.3.4拉深凸、凹模圆角半径的计算……………………………………………….13 2.3.5凸、凹模间隙的计算…………………………………………………………14 2.3.6拉深力的计算及初选压力机………………………………………………..14 2.4模具总体设计…………………………………………………………………….16 2.5主要零部件的设计……………………………………………………………….17 2.5.1拉深凸、凹模结构设计………………………………………………………17 2.5.2压边装置的设计……………………………………………………………..18 2.5.3弹簧的设计…………………………………………………………………..18 2.5.4推件板的设计………………………………………………………………...20 2.5.5凸模固定板的设计…………………………………………………………...20 2.5.6垫板的设计…………………………………………………………………...20 2.5.7模架的选用…………………………………………………………………...21 2.5.8联接件的选用与标准化……………………………………………………..22 2.6模具总装图……………………………………………………………………….22 2.7压力机的选用…………………………………………………………………….23 2.8加工工艺卡……………………………………………………………………….24 2.8.1拉深凹模的工艺卡片………………………………………………………...24 2.8.2拉深凸模的工艺过程卡……………………………………………………...25 结束语………………………………….……………………..………………...……...26 致谢…………………………………………………………………………………….28 参考文献………………………………………………………………………………29