毕业论文-冲孔落料复合模设计

发布时间 : 星期六 文章毕业论文-冲孔落料复合模设计更新完毕开始阅读

长春汽车工业高等专科学校

继续教育学院

毕业论文(设计)

中文题目: 冲孔落料复合模设计

英文题目:Punching Blanking Compound Die Design

毕业专业: 汽车机械制造 学生姓名: 准考证号: 指导教师:

二零一五 年 一 月

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中文摘要

中文摘要

近年来,我国冲压模具水平已有很大提高。大型冲压模具已能生产单套重量达50多吨的模具。为中档轿车配套的覆盖件模具国内也能生产了。精度达到1~2μm,寿命2亿次左右的多工位级进模国内已有多家企业能够生产。表面粗糙度达到Ra≦1.5μm的精冲模,大尺寸(Φ≧300mm)精冲模及中厚板精冲模国内也已达到相当高的水平。

围绕着汽车车身试制、大型覆盖件模具的快速制造,近年来也涌现出一些新的快速成型方法,例如目前已开始在生产中应用的无模多点成型及激光冲击和电磁成型等技术。它们都表现出了降低成本、提高效率等优点。

。 汽车覆盖件模具制造技术正在不断地提高和完善,高精度、高效益加工设备的使用越来越广泛。高性能的五轴高速铣床和三轴的高速铣床的应用已越来越多。NC、DNC技术的应用越来越成熟,可以进行倾角加工和超精加工。这些都提高了模具型面加工精度,提高了模具的质量,缩短了模具的制造周期。

。汽车覆盖件模具中发展重点是技术要求高的中高档轿车大中型覆盖件模具,尤其是外覆盖件模具。高强度板和不等厚板的冲压模具及大型多工位级进模、连续模今后将会有较快的发展。多功能、多工位级进模中发展重点是高精度、高效率和大型、高寿命的级进模。精冲模中发展重点是厚板精冲模大型精冲模,并不断提高其精度.

关键词:冲压模具 高精度 汽车覆盖件模具

英文摘要

Abstract

In recent years, China has greatly improved the level of stamping die. Large stamping die mold has been able to produce a single set of weighing over 50 tons. Complete coverage for the mid-range sedan mold can be produced

domestically. The accuracy of the 1~2 m, domestic enterprises into the die life is about 200000000 times more station level capable of producing. Fine

blanking die surface roughness of Ra is less than or equal to 1.5 m, the large size (phi = 300mm) thick plate fine blanking die and precision die at home also has reached a very high level.

Around the rapid manufacturing of automobile body manufacture, large

covering parts of the mould, have emerged in recent years, some new method of rapid prototyping, for example, has started the application in the production of multi point forming and laser shock and electromagnetic forming technology. They exhibit the advantages of lower costs, improve efficiency.

. Die manufacturing technology is constantly improving and improving

automobile coverage, high precision, high efficiency processing equipment is used more and more widely. Application of high speed milling machine five axis high-speed milling machine with high performance and a three shaft has been more and more. Application of NC DNC technology, more and more mature, can be inclined machining and ultra precision machining. All of these improve the precision mold surface, improve the quality of the mold, shorten manufacture cycle of mould.

. Panel die in the focus of development is large and medium-sized luxury sedan in the coverage mold high technical requirement of automobile panels, especially outer cover mold. High strength plate stamping die and dissimilar thickness and large multi position progressive die, progressive die in the future there will be rapid development. Multifunctional, multi position progressive die in the focus of development is high precision, high efficiency and large, high life progressive die. Fine blanking die in the focus of development is the thick plate fine blanking die of large precision die, and continue to improve its accuracy.

Keywords: high precision die stamping die of automobile cover

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