Press brake having spring back compensation stroke reversal cont

Details Press brake having spring back compensation stroke reversal cont Press brake having spring back compensation stroke reversal cont

1982-07-06

1985-04-16

Ruggiero, Joseph

Boots, shoes, and leggings

72 21, 72389, 72702, 364476, G06F 1546, B21D 502

Patent

active

045119767

ABSTRACT:
An electronic control system for use with hydraulic press brakes to provide compensation for material spring back to accurately produce a desired bend angle in the work piece. The ram force and flank angle of the work piece are monitored during the forming cycle to calculate the theoretical unloading curve of the work piece. Intersection of the plastic portion of the work piece force-angle curve with the theoretical unloading curve provides a calculated point of ram reversal resulting in the desired bend angle. The system compensates for changes in springback resulting from changes in material properties from one work piece to the next.

REFERENCES:
patent: 3145756 (1964-08-01), Hill
patent: 3156287 (1964-11-01), Munro
patent: 3181331 (1965-05-01), Wishing
patent: 3333445 (1967-08-01), Mergler
patent: 3352136 (1967-11-01), Clarke
patent: 3459018 (1969-08-01), Miller
patent: 3553990 (1971-01-01), Suding et al.
patent: 3564883 (1971-02-01), Koors et al.
patent: 3620066 (1971-11-01), Henkel et al.
patent: 3653251 (1972-04-01), Coonan
patent: 3713312 (1973-01-01), Galdabini
patent: 3729969 (1973-05-01), Gibson et al.
patent: 3777525 (1973-12-01), Peddinghaus
patent: 3812694 (1974-05-01), Peddinghaus
patent: 3821525 (1974-06-01), Eaton et al.
patent: 3895509 (1975-07-01), Peddinghaus
patent: 3943746 (1976-03-01), Eitel et al.
patent: 3948076 (1976-04-01), Eitel et al.
patent: 3955389 (1976-05-01), Foster
patent: 4148203 (1979-04-01), Farazandeh et al.
patent: 4408471 (1983-10-01), Gossard et al.
ICAM Integrated Computer Aided Manufacturing, presented at 4th Annual _Industry Briefing, Sep. 11, 1979, Southfield, Michigan, pp. 503-506.
ICAM Mathematical Modeling of Sheet Metal Formability Indices and Sheet _Metal Forming Processes, AFML-TR-79-4168, Nov. 1979, pp. 235-_237, by Air Force Materials Laboratory.

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