Ezperimental Study of Hydrodynamic Bearing Groove Machining Using Fized Position Cathode Pulse ECM
Due to its high efficiency, burr free, non contact, no tooling wear, and easy to machining difficult-tocut metal properties, electrochemical machining (ECM)has been validated as an important method for kinds of mass product applications in the past several decades. Recently, take advantages of high frequency power electronic technology improvement, pulse electrochemical machining (PECM) also been widely considered for micro scale tolerance precise manufacturing instead of conventional mechanic machining methods. Refer to those applications, this study devotes to apply the PECM method for grooves machining of a 1.5 mm diameter hydrodynamic journal bearing, which is made of SUS304 stainless steel. The rod tooling cathode made by insulated layer coating and herringbone pattern micro machining is used as the fixed position type for keeping a designed initial machining gap of 50 μm. Both surface finishing and micro scale feature machining could be achieved in the same fixture by using different tooling cathode in sequence without reclamping the workpiece. As shown in the experimental machining results, these herringbone grooves with width and depth less than 200 μm and 10 μm, respectively could be fabricated within 3 seconds by applying a 5 kHz pulse voltage power.
Electrochemical Machining Micro ECM Pulse ECM Hydrodynamic Bearing
Wenchieh Wu Chenhui Chang Shujhuan Liu Kuanchih Chiu Dayu Lin
Regional R&D Service Department, Metal Industries Research & Development Centre, Taichung 40768, Taiwan
国际会议
The 16th International Symposium on Electromachining(第16届国际电加工会议)
上海
英文
293-297
2010-04-19（万方平台首次上网日期，不代表论文的发表时间）