Metal deforming – Tool and/or tool holder – Having unitary tool-face
Patent
1994-05-06
1996-05-07
Jones, David
Metal deforming
Tool and/or tool holder
Having unitary tool-face
72462, 723893, B21D 3704
Patent
active
055135145
ABSTRACT:
An upper tool for a press brake is removably attached on an upper tool holding device mounted on an upper table of the press brake, and includes a wedge portion having a contact surface brought into contact with a lower surface of a support plate provided on a holder body of the upper tool holding device. A slide surface is slidably brought into contact with any of front and rear surfaces of the support plate, and a clamp surface is brought into pressure contact with a pressing-down and fixing section of an upper-tool pressing-down and fixing member of the upper tool holding device. A work processing portion processes a workpiece in cooperation with a lower tool. Further, an upper tool holding device for a press brake, for removably mounting and supporting an upper tool on an upper table of the press brake, includes a holder body attached to the upper table. A support plate is provided on a lower portion of the holder body, and an upper-tool pressing-down and fixing member is attached to the holder body, for fixedly fastening an upper portion of an upper tool in cooperation with the support plate. A clamp force adjusting device adjusts clamping force of the upper-tool pressing-down and fixing member; and a clamp releasing device releases the clamped upper tool.
REFERENCES:
patent: 4534203 (1985-08-01), Cros
patent: 4993255 (1991-02-01), Treillet
patent: 5022256 (1991-06-01), Van der Meulen
patent: 5065610 (1991-11-01), Yonezawa
patent: 5245854 (1993-09-01), Bruggink et al.
Patent Abstracts of Japan, vol. 18, No. 227 (M-1597) of Apr. 25, 1994 and Japanese Patent Document No. 06-023436.
Patent Abstracts of Japan, vol. 8, No. 146 (M-307) of Jul. 7, 1984 and Japanese Patent Document No. 59-042124.
Patent Abstracts of Japan, vol. 18, no. 168 (M-1580) of Mar. 22, 1994 and Japanese Patent Document No. 05-0337553.
European Search Report and Annex.
Japanese Patent Abstract, vol. 12, No. 145 (M693).
European Search Report.
Amada Metrecs Company Limited
Jones David
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