杯形件落料,拉深,冲孔,复合模的设计(附机械加工工艺卡)
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资料介绍
杯形件落料,拉深,冲孔,复合模的设计(附机械加工工艺卡)(含任务书,开题报告,毕业论文说明书10000字,cad图纸6张零件图1张装配图)
摘要
通过对制件的工艺计算及反拉深时的受力,应力及金属流动状态进行分析,设计并改进了反拉深模的结构,保证了零件尺寸的要求,消除了料厚变薄等缺陷,此模具结构简单,实用性强,提高劳动生产率,为保证模具冲裁间隙均匀性,凸模选用无机粘接剂,粘接固定,以消除制造误差,同时分析了该制件的工艺性。设计了拉深模具,并介绍了所用模具材料特点
关键词 拉深模 设计 冲孔 落料 改进
Abstract
Through the technological calculation of the product and the analysis of the exerted force ,stree and metal flowing status when drawing for ward and backward,the back ward drawing die was desingal and improved in its structure,which ensured the requirement of the part dimensions and eliminated some defects such as the material thickness becoming thinner,The structure of the die for the technological process is simple and practical,it can increase the production efficiency,in order to ensure the uniformity of the blanking clearance of the die ,inorganic adhesive is used to bord and fix the punch to eliminate manufacturing errors,after an analysis of the technological property of the producte,the dimensions of the blank were determined and the drawing die for the part was designeal the characteristics of the die material were introduced at last.
Key words backward drawing die design material thickness getting thinner improvement
题目:杯形件落料、拉深、冲孔、复合模
内容:(1)杯形件工艺性分析及工艺方案制定
(2)完成杯形件模具装配图及全部零件图的绘制
(3)完成模具主要工作零件的工艺规程编制
(4)编写设计说明书
工件名称:杯形件
工件简图:如图一所示。
生产批量:中批量
材料:Q235
材料厚度:1.5mm
冲压件结构工艺性分析
此工件有落料、拉深、冲孔三个工序。材料为Q235钢,具有良好的冲压性能,适合冲裁。工件结构相对简单,有3个ø20mm的孔、2个ø5mm的孔、2个ø3mm的孔、还有一个不规则的孔,孔与孔、孔与边缘之间的距离也满足要求,最小壁厚为3mm(ø20mm的孔与杯形件内壁之间的壁厚)。工件属于典型圆筒形件拉深,形状基本对称,对工件厚度变化也没有作要求,但是零件图上已经给出了孔心距的公差,由公差可以查得公差等级应为IT12级,尺寸精度较低,而工件总高度尺寸32mm可在拉深后采用修边达到要求,普通冲裁完全能满足要求。
插图清单
图1-1 产品零件图-------------------------------------------------------------------1
图3-1 排样图-------------------------------------------------------------------------3
图3-2 凹模型口图-------------------------------------------------------------------6
图5-1 凸、凹模----------------------------------------------------------------------11
图6-1 总装图-------------------------------------------------------------------------15
表格清单
表一 主要设计计算-------------------------------------------------------------------4
表二 压力中心数据表-----------------------------------------------------------------5
表三 工作部分尺寸计算--------------------------------------------------------------6
表四 工作部分尺寸计算--------------------------------------------------------------7
表五 卸料弹簧的设计计算-----------------------------------------------------------8
表六 杯形件复合模的装配-----------------------------------------------------------18
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