筒形支座成形工艺分析及多工位级进模设计及CAD图纸
关键词：级进模、模具设计、工艺、结构设计
The cylindrical bearing forming process analysis and multistage progressive die design
Abstract: Punching die has been widely used in industry. More Self-acting feed technology of punching die is also used in production, punching die could increase the efficiencies of production and could alleviate the work burden，so it has significant meaning in technologic progress and economic value. In this design, first we use the 3D software function of UG to create 3D model of the part. During the procedure, the work piece’s craftwork character is analyzed, and the work piece’s 2D drawings are made by AutoCAD, so that the work piece can be better comprehended. Learn the structural craftwork character of the work piece, so does the drawing and forming craftwork character. Make sure the work piece’s craft project, compare them and make the final decision. Calculate the size of the roughcast and select its shape. Calculate the times of the drawings, make sure the size of the semi-manufactured work piece of every steps, and draw the working procedure’s sketch. Calculate the every working pressure, design and draw die’s sketch, select every appropriate parts. Comprehend every needed dies’ character and the issues that is needed to be played more attention. On the base of the dies’ sketch ，the dies’ structure is analyzed, and then go on designing their structures and selecting punch equipments.
Keywords: progressive die;Craft project ;manufacture ;structure design
目 录
1 绪论 …1
1.1 冲压技术的发展及应用 1
1.2 模具发展现状 2
2 工艺分析及冲压方案确定 3
2.1 冲压件的工艺分析 5
2.2 工艺方案的分析和确定 5
2.2.1 工艺方案分析 5
2.2.2 冲压工艺方案的确定 …6
2.3 冲压排样图设计 …7
2.3.1 排样原则 7
2.3.2 排样图 …10
2.3.3 压力中心计算 10
3 模具主要参数计算 …12
3.1 模具冲裁间隙选择 …12
3.2 模具刃口尺寸计算 …12
3.2.1 刃口尺寸计算的基本原则 13
3.2.2 刃口尺寸的计算 …13
4 模具总体设计 17
4.1 送料方式的选择 17
4.2 卸料方式的选择 18
4.3 模具定位与紧固件的选择 18
4.4 模具导向零件的选择 19
5 模具主要零部件设计 …20
5.1 主要模板设计 …20
5.2 凸模设计 …20
5.2.1 凸模设计原则 …20
5.2.2 凸模固定方式 …20
5.2.3 凸模长度的计算 21
5.2.4 凸模结构设计 …21
5.2.5 凸模的材料和技术要求 …23