Method for the manufacture of a tool-set for the forming of shee

Details Method for the manufacture of a tool-set for the forming of shee Method for the manufacture of a tool-set for the forming of shee

1973-12-06

1976-05-11

Edmundson, F. C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204 6, 204224M, C25F 306, C25F 700

Patent

active

039560856

ABSTRACT:
In manufacturing a tool-set for sheet-metal forming which consists of a punch part and a die part, one of the parts is given its final shape and is then coated with a layer of an electrically conductive material, such as copper electroplated on it. This coated surface is then used as the electrode in a spark erosion process, which removes material from the second part and brings its shape into conformity with that of the first part.

REFERENCES:
patent: 3095364 (1963-06-01), Faust et al.
patent: 3513282 (1970-05-01), Fox
patent: 3591760 (1971-07-01), Inoue
patent: 3689729 (1972-09-01), Neward et al.
patent: 3694610 (1972-09-01), Saito et al.
patent: 3714017 (1973-01-01), Stark et al.
patent: 3723695 (1973-03-01), Gutnajar
Practice and Theory of Electrochemical Machining by Wilson, pp. 77 and 78, pub. by Wiley-Interscience, New York, 1971.
Electrochemical Machining by DeBarr et al., p. 26, pub. by American Elsevier, New York, 1968.

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