复杂汽车零件级进模中间几何构形生成算法  

Generation algorithm of intermediate geometric configuration for progressive die of complex automotive parts

作　　者：王文圣 李贵[1,2] 邹光明[1,2] 陈志平 周敏 谭升洪[3] Wang Wensheng;Li Gui;Zou Guangming;Chen Zhiping;Zhou Min;Tan Shenghong(Key Laboratory of Metallurgical Equipment and Control Technology, Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;Guangdong Kelon Mould Co. , Ltd. , Foshan 528303, China)

机构地区：[1]武汉科技大学冶金装备及其控制教育部重点实验室,湖北武汉430081 [2]武汉科技大学机械传动与制造工程湖北省重点实验室,湖北武汉430081 [3]广东科龙模具有限公司,广东佛山528303

出　　处：《锻压技术》2018年第2期151-156,共6页Forging & Stamping Technology

基　　金：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)

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.

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[金属学及工艺—金属压力加工]