【摘要】 针对自主设计的一种新型WEDG系统走丝机构,提出了采用模糊控制的方法实现电极丝的恒张力控制。首先分析了该新型WEDG系统走丝机构的工作原理,建立了系统的走丝机构控制模型。在此基础上,基于模糊控制理论,根据张力反馈对送丝轮的转速进行闭环控制,最终实现了电极丝的恒张力控制。基于该WEDG系统进行了微小工具电极的加工实验。结果表明,该WEDG系统走丝稳定、张力恒定,能够以很高的效率制作出直径小(直径小于10μm)、几乎没有锥度的工具电极,很好地满足了的微细电火花加工机床微小工具电极的制作需要。更多还原

【Abstract】 Based on the new type WEDG system,fuzzy control method is presented for realizing the wire constant tension.Firstly,the working principle of this WEDG system is analyzed and the control model of the WEDG system is presented in this paper.On the basis,a tension fuzzy controller is designed and the wire constant tension is achieved.The micro electrode manufacturing experiment based on this WEDG system is carried out,the results demonstrated that the WEDG system wire transportation is stable,wire tension is constant,the micro tool electrode with small diameter (less 10μm) and almost no taper can be fabricated efficiently,and meet the requirement of manufacturing micro electrode on position for MEDM machine tool very well.更多还原