往复走丝线切割电极丝精确定位方法及系统开发  

The wire precise positioning method and system development of reciprocating thread cutting machine tool

作　　者：胡光忠[1,2] 刘康[1,2] 柳忠彬[1,2] 杨大志[1,2] 李克君 

机构地区：[1]过程装备与控制工程四川省重点实验室,自贡643000 [2]四川理工学院,自贡643000 [3]四川深扬数控机械有限公司,成都610061

出　　处：《现代制造工程》2012年第10期106-109,共4页Modern Manufacturing Engineering

基　　金：四川省国际科技合作与交流计划项目(2011HH0032);自贡市重点科技计划项目(10Q04)

摘　　要：电火花线切割加工精度取决于其定位精度和定形精度,而定位精度主要取决于线切割中电极丝的定位精度。分析影响电极丝位置精度的因素:丝杠等机械系统的传动精度、电极丝与工件的位置精度和电极丝的垂直度等。提出了"矩阵化"补偿方法和智能接触感知方法,开发了精确移轴、碰边、对中和校垂直等定位模块。该方法应用于往复走丝线切割数控系统,提高了电火花线切割加工的精度。Wire Electrical Discharge Machining （WEDM） accuracy depends on the positioning accuracy and precision shaping, and positioning accuracy depends on the electrode wire positioning accuracy. The impact factors of wire position accuracy：the drive precision of screw and other mechanical systems, the location accuracy of the electrode wire and workpiece and vertical de- gree of wire. The ＂matrix＂ of compensation and smart touch sensing method are proposed, and the precise shift axis module, the touch sensing module, proofreading midpoint module and vertical calibration positioning module are developed. The method is applied to the CNC system of reciprocating thread cutting machine tool,improve the accuracy of WEDM.

关 键 词：电火花线切割加工 电极丝 定位 误差补偿 接触感知 

分 类 号：TH9[机械工程]