冲压模具U型弯曲模具设计说明书

U型冲孔模具设计说明书系别：

专业：

班级：

学号：

姓名：

指导教师：

完成日期：年月日

摘要

随着全球经济一体化的深入，模具工业在国民经济中所发挥的作用越来越明显。模具设计水平的高低直接影响产品的质量及生产效率。

设计本模具是为了制造普通 U 形弯件。设计中分析了零件的结构及工艺性，拟订该零件的冲压工艺为“切边—弯曲”，讨论了弯曲零件毛坯展开形状和尺寸的确定方法，设计了落料模和弯曲模，对关键零件的结构设计作了详细阐述，并指出了模具设计时的注意事项。其中，弯曲成形模是本设计的重点，将切边弯曲集中于一套模具中，使得冲件的质量和生产效率较高，满足了生产

需要。

由于模具设计是一种经验性较强的设计，经过长期发展积累了大量丰富的冲压工艺技术资料，在设计这两套模具时必然要借鉴这些经验数据，含括了落料模、弯曲模、拉深模中常用的工艺数据以及模具材料的选取和压力机基本参数等等.

关键词

冲压工艺毛坯展开弯曲成形模CAD

A BSTRACT

Along with global economic integration thorough, the mold industry the function which displays in the national economy is more and more obvious.Mold design level height direct influence product quality and production efficiency. Designs this mold is in order to make ordinary U shape curved.In the design has analyzed the components structure and the technology ca p a b ility, drafts this components the ramming craft is “the cutting edge - - cur ving”, discussed the curving components semifinished materials to launch the shape and the size definite method, has designed the cut die and the bending die, has made the detailed elaboration to the essential components structural design, and had pointed out the mold designed when matters needing attention.Among them, the curving molding machine is this design key point, concentrates curving the cutting edge in set of molds, caused to flush a quality and the production efficiency is high, has met the production needs. Because the mold design is one kind of empirical strong design, passed through the l ong -term development to accumulate the massive rich ramming processing technology material, when designed these two sets of molds had to profit from these empirical data inevitably, including has included the cut die, the bending die, in t h e dr a w i ng mold the commonly used craft data as well as mold material selection and press basic p a r a m eter and so on.

K EYWORD

Rough start stamping process bending modulus CAD

目录

目录

摘要 (4)

关键词 (4)

Abstract (5)

Keyword (5)

设计课题 (7)

设计内容 (7)

冲压件工艺分析 (7)

主要设计计算 (8)

1．毛坯尺寸计算 (8)

2．弯曲力计算 (8)

3．凸凹模尺寸确定 (9)

4.凸凹模间隙的确定 (10)

5.凹模圆角半径与凹模深度的确定 (10)

6.压力中心的计算 (10)

7.凹模周界的确定 (10)

模具的总体设计 (10)

1.模架的选择 (11)

2．卸料方式的选择 (11)

3．其他零部件的选用 (11)

1．材料选用 (12)

2．强度校核 (12)

模具总装图 (13)

结论 (14)

致谢 (16)

参考文献 (17)

设计课题

零件简图:如下图

所示:

生产批量: 大批量

材料: Q235

材料厚度: 5mm

材料宽度B：80mm

设计内容

冲压件工艺分析

材料结构及精度分析

该工件只有弯曲一个工序,材料Q235钢为软材料,在弯曲时应有一定的凸凹模间隙.工件的尺寸全部为自由公差,可看作I T14 级,尺寸精度较低,普通弯曲就能满足要求.

零件结构简单，左右对称，对弯曲成形较为有利，可查，Q235的允许最小弯曲半

径r min =0.5t=0.5mm, 而零件的弯曲半径r=2mm>0.5mm, 故，不会弯裂。