计算机显示卡支架的级进模设计 毕业论文.doc

摘 要 关键词：；；；Abstract This desighn is about the Stent of Computer Graphics.It’s hard to process and has difficulty to punch once.The multi-station progressive die assumped in this paper can finish the complex process—blanking and bending. The material of products is LY12M aluminum.The output is 300,000 Pieces. At this time designed of progressive die complet rushing to cut and curving compound technology of The Stent of Computer Graphics. This paper first analyses for part drawing and Bending technology, after expounding and proving emphatically for queuing up shape method, it is reasonable and good to choose row shape method, the location of the gate and the knockout way, reduces the production costs and increases the production efficiency. . After having passed pressure central calculation, have improved row shape method , and have determined the basic structure of mould. Described detailed course of selecting of every standard component?that has been designed and calculation. Summarized after having carried out economy analysis for complete die full paper. It built a 3D model of the die, compiled the process of a typical part. Keywords: Computer Graphics; type technology; row shape method; economy analysis 目 录 1 引言 1 1.1 级进模概述 1 1.2 毕业设计内容、步骤 2 2 零件图及成形工艺性分析 3 2.1 零件图的尺寸公差及技术要求 3 2.2 LY12M铝合金磁盘芯轴的机械性能 4 2.3 弯曲件的工艺性分析 4 2.3.1 成型分析 4 2.3.2 弯曲件直边的高度 4 2.3.3 弯曲件孔边的距离 4 2.3.4 弯曲件的回弹 5 2.4 确定工艺方案 5 3 毛坯尺寸的计算及方案确定 6 3.1 毛坯展开尺寸的计算 6 3.2 排样图工艺分析 7 3.2.1 横排工艺分析（方案一） 7 3.2.2 纵排排样分析（方案二） 8 3.3 优选分析 9 3.4 压力中心的计算 9 3.5 排样图的确定 14 3.5.1 排样图设计原理 14 3.5.2 载体设置的确定 14 3.5.3 确定工位数 14 3.5.4 步距精度和定距方式 15 3.6 冲裁间隙 15 4 模具结构设计与强度校核 16 4.1 模架的选择 16 4.2 凹模的设计与校核 16 4.2.1 凹模外形尺寸设计 16 4.2.2 凹模与边缘最小值 17 4.2.3 凹模上螺钉孔,圆柱销孔的小距离 17 4.2.4 凹模材料 17 4.2.5 凹模强度的校核 17 4.3 导料板的设计 18 4.4 凸模的设计 18 4.4.1 圆形凸模的设计与校核 18 4.4.2 材料选择 18 4.4.3 凸模强度校核 18 4.4.4 异形凸模（冲裁） 19 4.4.5 弯曲凸模的设计 20 4.5 浮顶器的设计 20 4.5.1 浮顶器的选用 20 4.5.2 材料选择 21 4.6 卸料装置的设计 21 4.6.1 卸料板的结构形式 21 4.6.2 材料的选择 21 4.7 固定板的设计 21 4.7.1 厚度的确定 21 4.