Electric heating – Metal heating – Cutting or disintegrating
Patent
1980-03-03
1983-10-11
Paschall, M. H.
Electric heating
Metal heating
Cutting or disintegrating
219 69E, 51237R, 51 59R, B23P 108
Patent
active
044094574
ABSTRACT:
A system for manufacturing tire molding metal molds with electrical discharge machining is disclosed, which makes possible the rotation, longitudinal and cross feeding of a work table on which a workpiece to be machined into a tire molding metal mold is placed and the rotation, lifting and lowering of a machining head, whereby the workpiece is discharge-machined by feeding a discharge machining electrode in a plurality of different directions corresponding to a plurality of projections protruding essentially vertical to the tire molding surface of the tire molding metal mold to be machined, and by changing electrodes having such profiles as to prevent the excess metal removal of the projections in accordance with each of the electrode feeding directions.
REFERENCES:
patent: 3694610 (1972-09-01), Saito et al.
patent: 3777595 (1973-12-01), Hausermann et al.
patent: 3949185 (1976-04-01), Roach
patent: 3952179 (1976-04-01), Baker
patent: 3959929 (1976-06-01), Fleischmann et al.
patent: 4100388 (1978-07-01), Meyer
patent: 4132038 (1979-01-01), O'Connor
patent: 4247748 (1981-01-01), Sato et al.
Futamura Shoji
Hirano Koichi
Takahashi Ken'ichi
Bridgeport Tire Co. Ltd.
Institute of Technology & Precision Electrical Discharge Work's
Paschall M. H.
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