Controller for wire electric discharge machine

Details Controller for wire electric discharge machine Controller for wire electric discharge machine

2005-12-27

2005-12-27

Picard, Leo (Department: 2125)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Product assembly or manufacturing

C219S069110

Reexamination Certificate

active

06980879

ABSTRACT:
A discharge pulse number generated between a wire electrode and a workpiece is counted every predetermined time. A ratio Px/Ps of this counted value Px to the reference pulse number Ps will be determined to control an amount of coolant in response to this ratio Px/Ps. Also, in response to this ratio Px/Ps, an amount of movement within predetermined time is controlled. Further, through the ratio Px/Ps and the like, quiescent time to be controlled by the detection voltage generator is controlled. Thereby, surplus supply of energy is prevented, the machining speed and machining precision is improved and any disconnection of the wire electrode is avoided.

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Brink, Dean,“EDM: Principles of Operation”.
Jack, Hugh, “58. Electric Discharge Machining (EDM)”, Aug. 31, 2001.
European Search Report dated Nov. 13, 2003 for related application EP 01310631.

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