发布时间 : 星期五 文章汽车闪光器外壳落料拉深模具更新完毕开始阅读1cf13fea102de2bd960588cf
Xxxxx大学毕业设计（论文）
结论与展望
通过本次毕业设计，我学到了很多东西，可谓受益匪浅。掌握了盒形件坯料尺寸的计算方法，拉深次数的确定，模具工作部分的尺寸和公差的计算方法和模具结构设计等知识，另外由于大量的绘图工作，我已经熟练的掌握AUTOCAD、UG等制图方法，并对仿真学知识有一定的了解。对于模具设计我也有了一些自己的见解，我们不应该一味的照搬书本知识，应学会举一反三，只有通过创新才能快速推动我国模具行业的发展。
毕业设计是扎实专业基础知识和提高专业技能不可或缺的忠言步骤。学生们只有通过一定的课程设计及其相关实践，才能熟练掌握模具设计及其制造行业领域。作为机械方面的大学生来说模具毕业设计是不可少的一项学习任务。毕业设计是对所学的理论知识的巩固，扎实的理论知识对专业技能的提高其重要的推动作用，为实践提供的正确的指导，本次毕业设计是汽车闪光器外壳落料拉深模具设计及其仿真，通过本次的设计，学习了设计的思路方法。步骤，了解到了盒形件设计，并攻克了一系列的重点、难点。
模具制造技术的迅速发展，已经成为现代制造技术的重要组成部分。如模具
的CAD\\CAM技术，模具的激光快速成型技术，模具的精密成型技术，模具的超精密加工技术，模具在设计中采用有限元发，边界元发进行流动、冷却、传热过程的动态模拟技术，模具的CIMS技术，已在开发的模具DNM技术以及数控的，几乎覆盖了所有现代制造技术。现代模具制造技术朝着加快信息驱动、提高制造柔性、敏捷化制造及系统化集成方向发展。
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致谢
通过本次毕业设计，我学到了很多东西，可谓受益匪浅。掌握了盒形件坯料尺寸的计算方法，拉深次数的确定，模具工作部分的尺寸和公差的计算方法和模具结构设计等知识，另外由于大量的绘图工作，我已经熟练的掌握AUTOCAD、UG等制图方法，并对仿真学知识有一定的了解。
本次设计的顺利完成，也在经过大量的数据计算和大量的绘图工作的条件下完成的，当然在设计过程中也出想了一些问题，经过了反复的修改。这些问题的顺利解决主要在王老师的指导及同学的帮助。因此在这里我对他们表示由衷的感谢。
总之，这是一次难忘的经历，不仅让我学到了知识，同时也让我感觉到了同学之间的互助，老师对学术的精神。在我以后的人生经历中，这将是一批不小的财富。
王云龙 2011年6月
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Xxxxx大学毕业设计（论文）
参考文献
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[13] 周玲.冲模设计实例详解[M]．北京:化学工业出版社，2007． [14] 陶治.材料成形技术基础[M].北京：机械工业出版社,2002.
[15] 贾俐俐.冲压工艺与模具设计[M].北京：人民邮电出版社，2008. [16] Carlo H. Séquin. CAD tools for aesthetic engineering [J]. EECS Computer Science Division,2004,(2):30~33.
[17] D.H. Parka,*, S.S. Kanga, S.B. Parkb. A study on the improvement of formability for elliptical deep drawing processes [J]. Department of Die and Mould Design,2001,(113):662~665.
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附录A：引用的外文文献及其译文
A study on the improvement of formability for elliptical deep drawing processes
D.H. Parka,*, S.S. Kanga, S.B. Parkb
Abstract The punch and die corner radii, the lubricant condition, the working speed, the blank-holding force, the friction force and the clearance change the formability of the deep drawing process. In general, sheet metal forming may involve stretching, drawing or various combinations of these basic modes of deformation. The influence of the punch and die corner radii is of great importance in the design of sheet metal working processes. Recently, most of the research for the sheet metal deep drawing process has been performed on the formability of an axisymmetric shape, but there are not any concrete reports on the formability of a non-axisymmetric shape. In addition,the conventional corner radii of the punch and die have been determined by trial-and-error using industrial experience and post-processing tests, and only approximate corner radii of the punch and die have been presented. In order to obtain the optimal products in the deep drawing process, elliptical deep drawing tests were carried out with several corner radii of the punch and die. In this study, the optimal corner radii of the punch and die in the deep drawing process with a non-axisymmetric blank shape are proposed.Research has been carried out using diverse technologies including experimentation and the finite element method. C 2001 Elsevier Science B.V. All rights reserved
.Keywords: Non-axisymmetric deep drawing; Punch corner radius; Die corner radius; Finite element method; Blank shape 1. Introduction
Many research investigations for cylindrical products have been carried out into the fundamentals of the deep drawing process [1—4]. Thus, this has produced many applied shapes such as rectangular, elliptical and non-axi-symmetrical. In general, most of the research for the deep drawing process has been performed on the formability of an axisymmetrical shape, but there are no any concrete reports on the formability of an elliptical shape [5—7]. For the improvement of the formability of deep drawing process, the punch and die corner radii, the lubricant condition, the working speed, the blank-holding force, the friction force and the clearance are influential. In general, sheet metal forming may involve stretching, drawing or various combi-nations of these basic modes of deformation. It is important to determine the influence of the process variables in the design of sheet metal working processes. Especially, the punch and die corner radii for deep drawing will affect the formability. Research works for a better understanding of sheet metal forming processes have been carried out using diverse technologies including experimentation and the finite element method (FEM). The formability of non-axisymmetrical shapes has been explored under the process conditions that the blank size is different between the major and minor axes and that the material flow is non-uniform [8]. It is important to change the blank shape, because a blank comes into contact with the die [9,10]. In this study, the corner radii of the punch and die for the elliptical deep drawing process were studied to investigate their influence on formability.
2. Experimental work
2.1. Experimental material
The material used in this study is an electro-galvanized sheet steel SECE with a thickness of 1.6 mm. Tensile tests were carried out in the directions of 0°, 45° and 90° to the rolling direction. The gauge length and width of the tensile specimens were 25 and 50 mm, respectively.
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