形件弯曲模设计毕业论文

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1、毕业设计课　题：U形弯曲件设计时间：2010.11.11～12.11班　　级：学　　号：姓　　名：***指导教师：******完成日期：2010年12月11日前言一、弯曲的概念与应用金属材料被弯成一定形状和角度的零件的成形方法称为弯曲。弯曲是冲压生产中应用广泛的一种工艺，可用于制造大型结构零件，，如飞机机翼、汽车大梁等，也可用于生产中小型机器及电子仪器仪表零件，如铰链、点子元器件等。根据弯曲件的不同要求和生产批量的大小，有各种不同的弯曲方法。最常用的是以弯曲模具在通用压力机上进行压弯，此外也有在折弯机、滚弯机、拉弯机上进行的折弯、滚弯、及拉弯。目录前言

2、·····················································2设计任务书···············································5U形件弯曲模第一章工艺分析········································61.1材料分析··········································61.2结构分析··········································6第二章工艺方案拟定·········

3、···························72.1毛坯展开··········································72.2方案确定···········································8第三章弯曲工艺计算····································83.1冲压力计算········································83.2模具工作部分尺寸计算······························9第四章模具总结构形式确

4、定·····························12第五章冲压设备的选择·································12第六章弯曲模模架及零件设计···························136.1后侧导柱模架的选用································136.2其它零件结构·····································13第七章模具制造工艺过程·······························167.1凹模制造工艺过程···········

5、······················167.1凸模制造工艺过程·································16第八章模具各部分零件参数·····························16第九章橡胶垫的选用···································17第十章总工程图·······································18总结·················································19致谢信················

6、·······························20参考文献·············································22附录·················································23毕业设计任务书题目：根据下面的制件，设计冲压模具（为大批量生产）设计工作量：1、模具装配图一张（A0或者A1图纸）。2、主要零件图1～3张（A3或者A4图纸）。3、模具各零件及模具总体装配三维造型。4、模具设计说明书一份。5、PPT设计说明书一份。U形件弯曲模具设计如图所示的弯曲件，

7、其材料为10钢，料厚5mm，板宽40mm。图1一、工艺性分析。1、材料分析。该工件所用材料10钢是常用的冲压材料，，塑性较好，适合冲压加工。2、结构分析。该工件结构简单，形状对称，适合弯曲。工件弯曲半径为6mm，查表3.1（垂直于纤维），查表rmin=0.1t=0.6mm，即能一次弯曲成功。工件的弯曲直边高度为36-5-6=25mm，远大于2t，因此可以弯曲成功。该工件是一个弯曲角度为90o的弯曲件，所有尺寸精度均未标注公差，而当r/t<5时，可以不考虑圆角半径的回弹，所以该工件符合普通弯曲的经济精度要求。3、结论。该工件的弯曲工艺性良好，适合进行弯曲

8、加工。二、工艺方案的拟定。1、毛坯展开。如图所示：图2毛坯总长度等于各直边长度加上各圆角展开长