拉深工艺中新型变压边力装置的设计  

Design of A New Device with Variable Blank Holding Force in Deep Drawing Process

作　　者：刘念聪[1] 王银芝[2] 

机构地区：[1]成都理工大学自动化学院,四川成都610059 [2]西华大学机械工程与自动化学院,四川成都610039

出　　处：《制造技术与机床》2010年第2期126-128,共3页Manufacturing Technology & Machine Tool

摘　　要：在分析现有压边装置应用现状的基础上,提出了一种能够提供随法兰位置变化的新型变压边力装置。利用非线性电位器模拟理想变压边力曲线,更符合拉深过程中的压边力要求。利用电液伺服阀良好的快速响应性,可以调整拉深气垫作用在板料上的压边力大小。采用随动装置使电位器输出电压随法兰行程的变化而变化。实践表明,该装置可提高板料的可成形性、材料利用率,减少不良缺陷的发生。Based on the analysis of application status of blank holding equipment, a new device with variable blank holding force was proposed, the characteristic of which was that the blank holding force （ BHF ） varied with the flange location at the same time. Simulating ideal BHF curve with nonlinear potentiometer met the demands of blank holding force. To adjust effectively BHF on sheet metal exerted by air-cushion, electro-hydraulic servo valve with the fast response characteristics was used. Output voltage of nonlinear potentiometer varied with the flange stroke by servo device. Results show that the device can improve the formability and the utilization efficiency of sheet metal and avoid various defects.

关 键 词：压边装置 变压边力 起皱 曲线模拟 

分 类 号：TG386[金属学及工艺—金属压力加工] TG385.2