Electric heating – Metal heating – Cutting or disintegrating
Patent
1985-05-10
1987-12-15
Leung, Philip H.
Electric heating
Metal heating
Cutting or disintegrating
323287, B23H 714, G05F 144
Patent
active
047135166
ABSTRACT:
A pulse generator for spark erosive machining of a conductive workpiece, including a d.c. voltage source, a switching element such as a switching transistor connected in circuit with an inductive coil and the work gap across the voltage source, and a high frequency transformer, where one winding of the transformer is connected in parallel with the voltage source and the other winding is connected in parallel to the series circuit consisting of the inductance coil and the work gap. When the switching element is turned on, a machining pulse is applied to the gap; when the switching is turned off, stored energy in the inductance coil is dissipated across the gap and, owing to the transformer connection, generates a recuperation current flowing into the voltage source. The switching element is preferably controlled on the basis of the magnitude of the current flow through the circuit.
REFERENCES:
patent: 3052817 (1962-09-01), Brauker
patent: 3283116 (1966-11-01), Scarpelli
patent: 3289040 (1966-11-01), Pfau et al.
patent: 3389300 (1968-06-01), Walter et al.
patent: 3456087 (1969-07-01), Hockenberry et al.
patent: 3466416 (1969-09-01), Maillet
patent: 3485987 (1969-12-01), Porterfield
patent: 3717741 (1973-02-01), Verner
patent: 3745444 (1973-07-01), Calkin et al.
patent: 3832510 (1974-08-01), Pfau et al.
patent: 3893013 (1975-07-01), Mironoff
patent: 4004123 (1977-01-01), Inoue
patent: 4017705 (1977-04-01), Bazhenou et al.
patent: 4060758 (1977-11-01), Wright
patent: 4163887 (1979-08-01), Buhler
patent: 4237370 (1980-12-01), Ullmann
patent: 4277668 (1981-07-01), Inoue
patent: 4450337 (1984-05-01), Inoue
Buhler Ernst
Rullo Antonio
AG fur Industrielle Elektronik AGIE Losone b. Locarno
Evans Geoffrey S.
Leung Philip H.
LandOfFree
Pulse generator for spark erosive metal working does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pulse generator for spark erosive metal working, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse generator for spark erosive metal working will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1221593