机械5

云母片冲压工艺及模具设计【薄板类冲裁件落料模】 摘要：本设计的题目为云母片冲压工艺及模具设计,体现了薄板类冲裁零件的要求、内容及方向，有一定的设计意义。通过对该零件模具的设计，进一步加强了本人冲压模设计的基础知识，为设计更复杂的冲压模具做好了铺垫和吸取更深刻的经验。 本设计运用冲压成形工艺及模具设计的基础知识，首先分析了冲裁件的冲压工艺性，为确定冲裁工艺方案做好了准备；然后计算冲裁力和模具刃口尺寸，便于选取压力机及确定工作零件的尺寸和结构；最后分析了制件的特征，确定模具的设计参数、设计要点及推件装置的选龋 本冲裁件为不规则形状,为了便于凸模的加工，所以在设计时把凸模设计成直通式,然后,将其铆接在凸模固定板上。此外,该制件的尺寸较小,为保证凹模的加工精度,在设计时应将其设计成整体式凹模。同时,为了简化模具结构采用弹性推件装置。 关键词：冲压模整体式凹模弹性推件 Lami
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ng 目录 1绪论………………………………………………………………1 1.1国内模具的现状和发展趋势…………………………1 1.1.1国内模具现状………………………………………1 1.1.2国内模具的发展趋势………………………………2 1.2国外模具的现状和发展趋势…………………………3 1.3云母片模具设计与制造方…………………………4 1.3.1云母片模具设计的设计思路………………………4 1.3.2云母片冲压模具设计的进度………………………4 2云母片的冲压工艺性分析………………………………………6 3分析比较和确定工艺方案………………………………………8 4主要工艺计算……………………………………………………9 4.1排样设计及毛坯尺寸计算……………………………9 4.1.1确定零件的排样方案………………………………9 4.1.2冲压力的计算……………………………………10 4.1.3初选压力机…………………………………………11 4.1.4压力中心的计算……………………………………11 4.2计算零件刃口尺寸………………………………… 13 5计算各主要零部件的尺寸…………………………………… 19 5.1凹模厚度…………………………………………… 19 5.2凸模固定板厚度………………………………………19 5.3垫板的采用与厚度……………………………………19 5.4弹压卸料板……………………………………………19 5.5卸料橡胶的设计………………………………………19 6模具总体设计……………………………………………………22 6.1模具类型的选择………………………………………22 6.2定位方式的选择………………………………………22 6.3卸料方式的选择………………………………………22 6.4导向方式的选择………………………………………22 7主要零部件设计…………………………………………………23 7.1工作零部件的结构设计………………………………23 7.1.1凸模的设计…………………………………………23 7.1.2凹模的设计…………………………………………24 7.2定位零件的设计与选用……………………………25 7.2.1挡料销的选用………………………………………25 7.2.2卸料零件的选用……………………………………25 7.3导向零件的选用…………………………………… 26 7.4固定零件的选用………………………………………26 7.5模架的选用……………………………………………26 7.6模柄的选用……………………………………………27 8模具总装图………………………………………………………28 8.1模具总装图……………………………………………28 8.2冲压设备的选定………………………………………29 9结束语……………………………………………………………30 致谢………………………………………………………………… 31 参考文献…………………………………………………………… 32