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21. 发明申请

US20070228016A1 Wire electrode supply device for wire-cut electric discharge machine 审中-公开
标题翻译：线切割放电机线电极供应装置
公开(公告)号：US20070228016A1
公开(公告)日：2007-10-04
申请号：US11723939
申请日：2007-03-22
申请人： Yuki Kita , Yushi Takayama , Yoshiaki Tamura
发明人： Yuki Kita , Yushi Takayama , Yoshiaki Tamura
IPC分类号： B23H7/10
CPC分类号： B23H7/104 , B23H7/105
摘要： A wire electrode supply device capable of preventing slack and snapping of a wire electrode even using a heavy wire bobbin without using a wire electrode tension detector. A pulley is provided between the wire bobbin driven by a torque motor and a brake roller. The wire electrode unwinds from the wire bobbin, passes through the pulley, brake roller and a workpiece work area, and is taken up by a wind-up roller. When the wire electrode traveling speed is changed from fast to slow, the pulley descends to prevent the wire electrode from slackening between the wire bobbin and the brake roller. When the traveling speed is changed from slow to fast, the back tension from the torque motor is reduced for a predetermined period of time, reducing tension on the wire electrode and preventing it from snapping. Also, the pulley descends, rotating the wire bobbin in the feeding direction and quickening tracking of the shift to fast feed speed, enabling snapping of the wire electrode to be prevented even when a heavy wire bobbin is used.
摘要翻译：一种线电极供给装置，即使不使用线电极张力检测器，也能够使用粗线管，能够防止线电极的松弛和咬合。在由转矩电动机驱动的线筒与制动辊之间设置滑轮。线电极从电线绕线筒放出，通过滑轮，制动辊和工件工作区域，并被卷取辊吸收。当线电极行进速度从快速变化到慢时，滑轮下降，以防止线电极在线筒和制动辊之间松弛。当行驶速度从慢速变化到快速时，来自转矩电动机的背张力减小预定时间段，减少线电极上的张力并防止其卡扣。此外，滑轮下降，使线筒沿进给方向旋转，并且快速跟踪换档至快速进给速度，使得即使使用重型线筒也能够防止线电极的咬合。

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