Method for detecting and compensating electrode wear of...

Details Method for detecting and compensating electrode wear of... Method for detecting and compensating electrode wear of...

2007-05-11

2009-08-18

Evans, Geoffrey S (Department: 3742)

Electric heating

Metal heating

Cutting or disintegrating

C219S069160

Reexamination Certificate

active

07576295

ABSTRACT:
A method for detecting and compensating electrode wear of electric discharge machining (EDM) is disclosed, which comprises the steps of: defining a calibration node; calculating a wear length of a tool electrode by an edge-finding algorithm; using the calculated wear length of the tool electrode as a cut compensation for compensating a machining depth of next new tool electrode replacing the previously machined tool electrode; whereas the machining depth is obtained according to the following formula: the machining depth=designed depth of cut+predicted wear of the tool electrode for machining to desire depth−calculated wear length of the previously machined tool electrode+a through hole offset. With the aforesaid method, the wear of an used tool electrode can be detected automatically for compensating the machining depth of an unused tool electrode without ant additional equipment while achieving accurate machining.

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