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基于塑变成筒壁环料的筒件成形工艺分析——简介“一种筒形件成形工艺分析方法”的发明专利
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英文标题：Forming technology analysis for the loop materials of cylindrical wall formed by plastic deformation——Introduction to an invention patent about technology analysis method for cylindrical workpieces forming |
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作者：林政武 林东泓 |
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单位：广东省澄海密封件厂 广东省农垦集团 |
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关键词：筒形件 板料冲压成形 环形材料 环料的材料消化率(环料变形基因) |
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分类号：TG386 |
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出版年,卷(期):页码：2009,34(3):57-62 |
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摘要：
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与国内外现行的以各类经验数表为标准进行参照估算设计的方法不同,提出了以在成形过程中实际塑变成筒壁的环形材料为研究对象,把拉深过程看成是筒周长×环宽的(矩形)基本材料吸收消化其余三角形材料的过程,从而得到环料变形的基本特性因子(b/d)lg(b/t)。以实验数据为依据,基于变化规律和数量关系建立起关于拉深极限、拉深力、压边力、拉深次数、圆角选取、坯料修正和内孔翻边以及带缺口或凸耳的筒件直接拉深成形等工艺分析问题的数学公式。该方法将工艺分析从经验数表参照估算改为公式计算精确判定,形成了一个完整的分析计算体系,能够满足生产的实际要求,可作为编制先进计算机应用软件的技术基础。
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A different method was presented, which improved the technical analysis for stamping forming of cylindrical workpieces from estimation according to the tables in texts to the precise judgement formula phase. The loop materials were taken to form cylinder wall by plastic deformation as the research object, and the judgement formula were established based on the experiential data, variation rule and the quantitative relationship to solve the technical analysis problems for stamping forming of cylindrical workpieces, including drawing limit, drawing force, blank holding force, drawing times, selection of fillets, blank modification, edge turning of interior holes, as well as the notch or lug formed by direct deep drawing. The drawing process was regarded as a basic rectangular material to digest the rest of the triangular materials in order to find the basic characteristics factor (b/d) lg (b/t) of the loop material deformation. This method formed a complete analysis system to find a solution to meet the practical application of the production from the formula, and could be used as the preparation of computer-based technology applications.
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基金项目：
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作者简介：
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参考文献：
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[1]林政武,阮锋,张世俊,等.筒形件第一次拉深极限的公式判定法[J].锻压技术,1999,24(4):16-18.
[2]林政武,蔡锐彬.带U形缺口圆筒件拉伸变形规律的探讨[J].汽车技术,1997,(8):39-46.
[3]林政武,林东泓.内孔翻边极限的公式判定法[J].机电工程技术,2001,(1):30-32.
[4]王孝培.冲压设计资料[M].北京:机械工业出版社,1987.
[5]中国机械工程学会塑性工程学会编.锻压手册:第2卷冲压[M].3版.北京:机械工业出版社,2008.
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