Micro-EDM milling with tube electrode

The axial wear-loss insensitive tube electrodes was applied to substitute solid electrodes during micro-EDM milling process,and the tube electrode wear-loss characteristics during this processing was analyzed.The comparative experiments using both copper tube electrodes and solid electrodes were carried out on the convention micro-EDM milling system.Results indicate that tube electrode reduces wear-loss radius of the electrode end,improves machining accuracy,and simplifies the compensation method in micro-EDM milling process.