板液压成形及无模充液拉深技术

About sheet hydroforming and hydromechanical deep drawing without draw die

板液压成形技术是液压成形技术中重要的一类 ,广泛地应用于宇航、汽车等工业领域。近年来由于新材料和复杂几何形状零件的不断出现 ,更加突出此种技术的关键性。本文就板液压成形技术原理、数值模拟技术和分类进行了研究 ,探讨了此种技术将来的发展 ,介绍了基于板液压成形技术的无模充液拉深技术 ,利用实验和数值模拟技术对此技术进行了分析 ,验证了此项技术的可行性 。

Sheet hydroforming is one type of hydroforming and has many advantages.In this paper,the sheet hydroforming processs development has been reviewed and the basic principles and features are introduced and discussed.Some new ideas about the equipment and process are summarized.The prospects about sheet hydroforming are estimated.Based on the existed sheet hydroforming technologies,a new method,named as hydromechanical deep drawing without draw die is proposed and developed.By means of experiment and numerical simulation,this process has been analyzed and studied,and good results have been obtained.This proves that the process is reliable and can be used to form the parts with better quality and higher drawing ratio.