共查询到18条相似文献,搜索用时 171 毫秒
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汽车前底板冲压工艺分析与拉深模设计 总被引:3,自引:1,他引:3
在分析汽车前底板结构和工艺特点的基础上,确定了零件的成形工序,应用AUTOFORM V3.22软件对工艺方案进行了优化,以UG为辅助工具,设计出拉深成形所需的凸模、凹模以及压边圈,对于模具零部件装配,得到拉深模具的装配体三维数模.同时,介绍了覆盖件拉深模结构设计要点.通过实践验证,设计的拉深模工艺性良好、结构合理、符合生产要求. 相似文献
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《锻压技术》2021,46(7):172-177
通过分析排气罩的材料、数量、结构和工艺性,确定了此零件采用单工序模进行生产。设计了制件生产的工序图:工序1下方形料;工序2预拉深得到底部凸起位置;工序3激光切割翻边预制孔;工序4拉深翻边成形,得到翻边和下陷形状;工序5切边钻孔,完成制件。本次设计通过试压给出合格的展开件,使用展开毛料边缘定位,凸模与压边圈之间、压边圈与上模之间均采用导滑板的方式进行导向,定位精度高,以此实现了拉深翻边的准确加工。模具工作时安置调压垫调整压边力,设置镦死垫,避免了模具因受到巨大的冲击而导致的疲劳损伤。以CATIA为辅助工具,设计出拉深翻边成形所需的凸模、凹模以及压边圈,对模具零部件进行装配,得到拉深模具的装配体的三维数模。同时,介绍了覆盖件拉深模结构设计要点。通过实践验证,所设计的模具工艺性良好、结构合理、符合生产要求。 相似文献
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介绍了CATIA在汽车覆盖件模设计中的应用,重点阐述利用CATIA软件对拉伸模结构进行三维设计的过程,标准件的调用。 相似文献
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介绍了DDCAD系统拉深模设计,其中包括工件零件图的设计,国标标准件及常用图形符号的总体设计,基于标准的零件图及模具标准件的参数化绘制等,在此基础上设计拉深模装配图。 相似文献
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采用CAD/CAE数字化技术,基于自顶向下的设计思路,对汽车覆盖件模具进行了数字化设计,提高了覆盖件模具设计的准确性和开发效率。首先通过CAE技术对横梁零件的拉深方向、压料面和工艺补充面进行设计,获得数字化拉深模型面,并进行仿真验证,将拉深模型面导入UG软件中,从总体到局部设计了横梁拉深模结构,最后横梁零件的实际生产结果验证了该方法的有效性。 相似文献
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模具标准件二维图形元素库的建立方法 总被引:6,自引:0,他引:6
采用模具标准件图形元素库辅助绘图是模具行业提高计算机绘图速度的基本方法之一 ,对模具标准件的参数化处理会影响到图库制做的难度。详细的介绍了在AutoCAD2000中建立模具标准件二维图形元素库的具体方法与步骤 ,按照此方法 ,其他行业的设计人员也可根据自己的需要建立合适的图库文件辅助绘图。 相似文献
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《CIRP Annals》2022,71(1):225-228
Deep drawing dies are manufactured using metal sheets. Laser metal deposition is used for bonding the sheets and smoothening the edges. The strength and surface finish of the dies are the key challenges. Milling, roller burnishing, and laser treatment are applied as post-processing for improving the surface finish. A semi-analytical model is developed for selecting the sheet combination for sufficient strength. The new rapid prototyping process offers high flexibility for complex die geometries. The evaluation by deep drawing experiments using DC06 and high-strength HC380LA blanks revealed the feasibility of the new manufacturing routes regarding deep drawability and surface finish. 相似文献
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基于模板的汽车覆盖件拉延模具结构参数化设计 总被引:2,自引:1,他引:1
首先对模板技术、参数化设计技术、自顶向下的装配设计技术进行研究,采用基于“顶层基本骨架”的装配结构定义拉延模板,并应用WAVE技术实现覆盖件模具结构的关联设计,应用参数化设计实现模具结构相关参数的驱动。然后,制定了基于模板的覆盖件拉延模具结构设计流程,并通过UG二次开发,实现了结构的快速设计。最后,通过实例,验证了本方法的有效性。 相似文献
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《Journal of Materials Processing Technology》2014,214(9):1838-1843
The formability of deep drawn ultra-high strength steel sheets in dies coated with either titanium nitride (TiN) or Vanadium carbide (VC) at different drawing speeds and ironing ratios was investigated. TiN was deposited via chemical vapour deposition and physical vapour deposition (PVD) while thermal diffusion was used for VC deposition. In non-coated dies, seizure occurred on both surfaces of the die and the side wall of the drawn cup irrespective of the deep drawing conditions. The deep drawability is improved with coating of die. Whereas in coated dies, seizure became significant only during deep drawing extreme conditions of 120 mm/s for TiN-coated dies; and this was prevented in VC-coated dies across all drawing conditions. The VC-coated die was suitable for deep drawing of ultra-high strength steel sheets. The delayed fractured observed in the ultra-high strength steel cups occurred for a large amount of ironing ratio and drawing speeds; and this can be prevented by appropriate heat treatment. 相似文献
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Nowadays, sheet metal products are some of the most frequently found parts in industry. Progressive dies have a special role in various methods of sheet metal production. The design process however, requires a considerable amount of time and expertise. Two important activities during a progressive die design are “Nesting” and “Piloting”. In this paper, a software is introduced which automates the nesting of different parts according to minimum scrap strategy. The software is also capable of choosing the most suitable existing holes or designing auxiliary holes on the scrap part of the strip for piloting purposes. 相似文献