Improving the WEDM Process Acting on the Tool Electrode

The wire electrical discharge machining is based on the developing electrical discharges between a travelling wire tool electrode and a plate workpiece, in order to detach parts characterized by machined ruler surfaces. The practical experience and the study of the specialty literature highlighted the possibilities to improve the material removal rate by acting on the wire tool electrode. Two versions of devices able to periodically change the wire traveling motion speed are discussed and proposed; the devices could be included in the circuit of guiding the wire electrode on the wire electrical discharge machine.