压型板打弯工艺参数研究与优化

Research and Optimization of Crimp Curve Process Parameters of Profiled Plate

以550MPa级、厚度为0.3mm高强度超薄板的压型板打弯过程为研究对象,基于ABAQUS有限元软件显式算法,运用正交实验法分析了打弯工艺的主要参数打弯间距l、模具间隙h和冲压速度v对打弯曲率半径及减薄率、应力、等效塑性应变的影响。研究表明,影响打弯曲率半径的工艺参数显著性次序为l>v>h,影响减薄率的工艺参数显著性次序为h>l>v,影响应力的工艺参数显著性次序为l>h>v,影响等效塑性应变的工艺参数显著性次序为l>h>v;冲压间距为25mm、模具间隙为0.42mm、冲压速度为200mm/s为最优水平组合。

Taking the bending process of profiled plate made of high strength ultra-thin sheet with 550 MPa grade and 0.3 mm thickness as the study object, on the basis of explicit finite element method of the software ABAQUS, this paper used the orthogonal test method to analyze the influences of pressing spacing l, die clearance h and pressing speed v on the bending curvature radius, thinning rate, stress and equivalent plastic strain. The study shows that the significance sequence of process parameters which can influence bending curvature radius is l〉v〉h, the significance sequence of process parameters which can influence thinning rate is h〉l〉v, the significance sequence of process parameters which can influence stress is l〉h〉v, the significance sequence of process parameters which can influence equivalent plastic strain is l〉h〉v; and the best level combination is pressing spacing 25 mm, die clearance 0. 42mm, pressing speed 200 mm/s.