Abstract
Cathode design is a difficult problem must be faced and solved in electrochemical machining (ECM). In ECM process, various parameters, such as applied voltage, current density, gap distribution, machining rate and electrolyte composition and concentration, can affect ECM machining process and therefore cathode design. Among all these machining parameters, gap distribution is the most vital. Regard some type of aero-engine compressor blade as research object, this paper concentrates on the effects of the normal gap distribution of 2-dimension and 3-dimension on cathode design based on the cathode design method of , moreover the errors between two and three dimension normal gap also can be compared and analyzed in detail. To verify the accuracy of the designed cathode, the machining experiments were conducted on an industrial scale ECM machine and the experimental results demonstrates that the cathode designed utilizing 3-dimension normal gap exhibits more machining accuracy and therefore valuable.
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