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复杂汽车零件级进模中间几何构形生成算法
英文标题:Generation algorithm of intermediate geometric configuration for progressive die of complex automotive parts
作者:王文圣  李贵  邹光明  陈志平  周敏  谭升洪 
单位:武汉科技大学 广东科龙模具有限公司 
关键词:级进模 中间几何构形 中间参考面展开 旋转展开 有限元逆算法 
分类号:TG386
出版年,卷(期):页码:2018,43(2):0-0
摘要:

 复杂汽车级进模零件的成形需要多道成形工序,除产品构形以外,中间成形工序的几何构形难以确定,设计过程比较复杂,耗时费力。因此,针对该问题提出一种基于几何变形和冲压工艺相结合的中间几何构形生成算法,该算法由中间参考面展开和旋转展开组成。中间参考面展开参照基准面,通过对曲面的几何变换构造预期的中间形状,然后利用有限元逆算法逆向展开预定区域,获得精确的中间几何构形;旋转展开通过对变形面按特征分段,对各段变形面用不同的旋转轴处理,再将变换后的型面光滑的连接起来得到最终的中间几何构形。最后以复杂汽车级进模冲压零件为例,验证了该算法的可行性。结果表明,该算法能够实现复杂零件中间几何构形的生成,可以获得高曲面质量的中间几何构形,且有较高的效率。

 Forming of complex automotive progressive die parts requires multi forming processes. Except for the final geometric configuration of the product, the geometric configuration of the intermediate forming process is difficult to determine, and the design process is complicate and time-consuming. Therefore, an intermediate geometric configuration generation algorithm was proposed based on geometric deformation and stamping process. The algorithm consisted of intermediate reference surface unfolding algorithm and rotation unfolding algorithm. The former unfolding referred to datum plane, the expected intermediate shape was configured by the geometric transformation, and the intermediate geometric configuration was obtained by the finite element inverse algorithm to expand the predetermined region inversely. The final intermediate geometric configuration of the latter unfolding was obtained by connecting transformed profile smoothly through the segment of deformation surfaces according to features and process with different rotation axes for each section deformation surface. At last, for the stamping parts of complex automotive progressive die, the feasibility of the algorithm was verified. The results show that the proposed algorithm can realize the formation of intermediate geometric configuration for complex parts, and the high quality intermediate geometry configuration is obtained with high efficiency.

基金项目:
国家自然科学基金资助项目(51505348);武汉科技大学冶金装备及其控制教育部重点实验室开放基金资助项目(2015B08);2017年度容桂科技计划项目(容桂经发(2017)27号-8)
作者简介:
作者简介:王文圣(1991-), 男,硕士研究生 E-mail:1286793675@qq.com 通讯作者:李贵(1983-), 男, 博士, 副教授 E-mail:leegui2030@wust.edu.cn
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