Characterizing the machining effects of new lateral electrodes in electrical discharge machining
- 作者：A-Cheng WangShih-Hsien ChouChun-Sheng Wang
- 会议时间：2014-07-23
- 关键词：Electrical discharge machining ; Modified lateral electrode ; Gear ; Rack ; Groove
- 作者单位：Department of Mechanical Engineering,Chien Hsin University of Science and Technology,229,Chien-Hsin Rd.,Jung-Li,Taoyuan city,Taiwan
- 母体文献：第十一届先进成型与材料加工技术国际研讨会论文集
- 会议名称：第十一届先进成型与材料加工技术国际研讨会
- 会议地点：大连
- 主办单位：中国机械工程学会
- 语种：chi
摘要
The side machining in EDM created by lateral electrodes produces the plow grooves and the curved surfaces on the side wall of the blind hole, enhancing the values of the electrode in the machining process.However, lateral electrodes developed by strip spring or triangle copper block are not very stable in the lateral discharge machining.This study develops two new lateral electrodes that can generate lateral discharge on the workpiece in EDM.One is an electrode that can transfer down motion to side deformation by four 45° inclined planes; the other electrode includes gear-and-rack-transmitted elements to obtain a discharge effect in lateral EDM.In the latter process, two rotating gears are utilized to deliver two horizontal racks, and then these racks push copper plates to have horizontal deformation, thereby inducing grooves and curve surface being machined during this stage.Moreover, copper plates will go back to the original position due to the recovering forces of the springs after EDM.As a result, lateral electrode with gear-and-rack-transmitted system performs better than that with inclined plane elements; moreover, tooth-shaped grooves and curve surfaces are easily to create in the tube because of stable feeding mechanism of this electrode.