Capacitor-type pulse generator for electrical discharge machinin

Details Capacitor-type pulse generator for electrical discharge machinin Capacitor-type pulse generator for electrical discharge machinin

1986-04-10

1989-02-07

Paschall, M. H.

Electric heating

Metal heating

Cutting or disintegrating

219 69S, 219 69P, 219 69M, B23P 108

Patent

active

RE0328553

ABSTRACT:
A capacitor-type pulse generator is provided for wire-cutting EDM. The generator includes a capacitor connected on one hand to a DC source in series with a charging switch and on the other hand to the EDM gap in series with a discharging switch. A first sensing circuit turns the discharging switch into conduction when the charging voltage on the capacitor reaches a predetermined level. The charging switch is normally in its conductive state and is turned into its nonconductive state when a second sensing circuit senses that the EDM gap voltage exceeds a preselected value. In a modified generator, parallel-connected discharging switches are triggered in sequence when the capacitor voltage reaches the predetermined level.

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