Low/distortion on Exterior Surface of Auto Body and Its Correction Method

作     者：HU Ping BAO Jingru ZHAO Kunmin 

作者机构：School of Automotive EngineeringDalian University of TechnologyDalian 116024China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2012年第25卷第2期

页      面：299-305页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 081304[工学-建筑技术科学] 0802[工学-机械工程] 0813[工学-建筑学] 

基　　金：supported by Key Project of National Natural Science Foundation of China (Grant No. 10932003) National Hi-tech Research and Development Program of China (863 Program,Grant No.2009AA04Z101) National Basic Research Program of China (973Program,Grant No. 2010CB832700) 

主　　题：sheet metal forming surface low/distortion surface deflection corrective method morphing algorithm 

摘      要：Surface low/distortion is one of the most challenging surface deflections that have a great effect on the exterior appearance of *** studies on surface distortion/deflection have focused on evaluation and visualization techniques,the research work on correction or prevention of surface low/distortion is limited,and there is no perfect surface low/distortion corrective method that can satisfy the needs of the engineering.A B-spline based geometry morphing algorithm is proposed and then a new program based on UG-NX platform is developed to modify the die face in the surface low/distortion *** verify this developed system,the experimental dies that can replicate the surface low/distortion phenomenon successfully is put to *** geometric variables are introduced to describe the basic geometry of typical depression features of automotive outer *** experimental dies are then designed to reflect various combinations of these geometric *** stamping experiments are conducted on cold rolled grade 5（CR5） sheet steel and various static measurements,such as oil-stoning,laser scanner,etc,are performed to measure and record the surface low/*** approaches including good bearing,holds in blank and die face morphing that aim to correct low/distortions are tried out and surface low/distortions are observed in the specimen with reverse draw depth of 10 *** measurement results show that die morphing is a practical and effective method to correct the surface low/*** correction method proposed can be used to minimize the occurrence of surface low/distortion in die manufacturing,which has certain reference significance to the correction of surface low/distortion.