锻压技术

金属板材渐进成形中局部纵向力的分析

英文标题：Analysis on local vertical force during the process of sheet metal incremental forming

作者：蔡改贫陈宗玉姜志宏

单位：江西理工大学

关键词：渐进成形应变分析横向力纵向力

分类号：TG386

出版年,卷(期):页码：2014,39(9):31-35

摘要：

针对板材渐进成形“分层加工”的特点，对渐进成形加工每层过程中局部成形力进行受力分析，并将其分解为水平方向的成形分力(横向力)与垂直方向的成形分力(纵向力)。根据加工每层进给时产生不同的应变量给予合理的假设和简化，建立了加工每层时纵向力的表达式。避免了以往渐进成形中成形力计算的笼统性以及不能与实际分层加工相对应的缺点，精确地建立了加工每层时纵向进给所需成形力模型。通过对比纵向力模型的数值计算与实验测得的纵向力数值，验证了所建立的纵向力模型能较准确地计算出分层加工时层与层之间进给所需的纵向力。

According to the hierarchical processing characteristics of sheet incremental forming, forces that formed in local area were analyzed in the process of incremental forming and divided into horizontal force and vertical force. Based on the different strains caused by each feed, reasonable hypothesis and simplification were given and the vertical force was expressed when the material of each layer was machined. Furthermore, the shortcoming of general calculation and mismatch with actual hierarchical processing was avoided and the forming force model for every layer was set up accurately. Comparing the calculated results with the experimental data, it is proved that the vertical force produced from every layer can be calculated accurately through the calculated model.

基金项目：

国家自然科学基金资助项目（50975131）

蔡改贫（1964-），男，博士，教授，硕士生导师

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