摘要
针对复杂弯曲件的模具修形及回弹预测问题,笔者在UG环境中,提出了一种曲率半径可变的空间引导线修正算法;首先将空间引导线按需求分割为N段,采用空间曲线的直线圆弧修正算法对每段曲线按预设的半径修正系数进行修正,然后把修正后的N段曲线特征对齐连接,便得到修正后的模具型面引导线;最后将此算法成功应用到汽车复杂弯曲件的模具引导线修正中。
To the problems in predicting amendment and springback of the complex bending parts die surface,a space pilot line amendment algorithm of radius of curvature variable was proposed in the UG environment.First,space pilot line was divided into N sections according to the requirement,each section was amended based on presumptive radius′ correcting factor with the algorithm of space curve line-arc amendment,Then,feature aligning and linking amended sections,and amended pilot line of die surface was obtained.Finally,this algorithm is applied to the amendment of the pilot line in a car′s complex bending die to accomplish the amendment function.Our method is simple and practical and easy to understand.
出处
《机械科学与技术》
CSCD
北大核心
2010年第6期737-739,共3页
Mechanical Science and Technology for Aerospace Engineering
关键词
复杂弯曲件
UG环境
修正算法
空间引导线
直线圆弧逼近
complex bending parts
UG environment
amendment algorithm
space pilot line
line-arc approximation
