论文部分内容阅读
对于复杂型面零件,冲压回弹随参考点选择不同而不同,而且精确选择很难。以最小模具修模量为目标,提出一种回弹参考点选择的方法。该方法采用计算机仿真和逆向工程技术,计算回弹值并确定最优的回弹参考点。即在仿真计算中试确定回弹参考点,然后将实际冲压件通过逆向工程技术重构型面,采用迭代最近点算法将重构面与设计面进行配准,计算回弹值并分析其特征,判断参考点选择是否合理,通过与其他参考点配准结果进行对比以及实验验证,验证回弹参考点选择方法的可行性。
For complex profile parts, stamping rebound varies with reference point selection, and precise selection is difficult. Aiming at the minimum mold repair modulus, a method of springback reference point selection is proposed. The method uses computer simulation and reverse engineering to calculate the rebound value and determine the optimal rebound reference point. That is to say, in the simulation calculation, the springback reference point is determined by test, and then the actual stampings are reconstructed by reverse engineering technology. The iterative nearest-point algorithm is used to register the reconstructed surface with the design surface, calculate the rebound value and analyze its characteristics , To determine whether the reference point selection is reasonable, compared with other reference point registration results and experimental verification to verify the feasibility of springback reference point selection.