Metal working – Convertible metal working machine
Patent
1989-10-19
1990-05-29
Briggs, William
Metal working
Convertible metal working machine
72481, 83552, B23P 2300, B21D 4300, B26D 900
Patent
active
049283774
ABSTRACT:
A machine tool having a machine frame open on three sides in the shape of the letter C, comprising an upper die support, disposed on the machine frame and vertically movable by a drive cradle, with at least two die holding fixtures placed side by side and having corresponding upper dies, a lower die support disposed on the machine frame with a corresponding number of die holding fixtures placed side by side and having corresponding lower dies, and a matrix plate clamped on the lower die support, disposed in a frame containing the die holding fixtures. In this configurement, it is possible to use a self-guided tool unit in an equally flexible manner as the normal upper and lower dies, by disposing, instead of a lower die, a tool unit comprising an upper die and a lower die contained in a guide frame, such as a cutting unit or a coping unit, on a matrix plate in a corresponding die holding fixture, and to drivingly couple it with the upper die support.
REFERENCES:
patent: 3942431 (1976-03-01), Goff
patent: 4241632 (1980-12-01), Seo
patent: 4250784 (1981-02-01), Bredow
patent: 4587830 (1986-05-01), Mills
patent: 4691554 (1987-09-01), Murphy
patent: 4733552 (1988-03-01), Lefils
patent: 4738018 (1988-04-01), Ebrahimian
Briggs William
Muhr und Bender Maschinenbau GmbH
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