Bending method and bending device

Metal deforming – With indication of condition or position of work – product,... – Including deformation by simple bending

Reexamination Certificate

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Details

C072S031110, C072S389400, C072S389500, C072S702000, C100S257000, 36

Reexamination Certificate

active

07007530

ABSTRACT:
In bending a workpiece, a position of the workpiece relatively pressed down by a punch is directly detected by a plurality of position detectors provided in a V-groove of a die, and a bending speed calculation section obtains a bending speed from a change in this position. If bending speeds at position of the respective position detectors differ, a uniform speed arithmetic operation section calculates a bending speed to make the bending speeds at the positions of all of the position detectors, and a driving shaft instruction section controls driving shafts to bend the workpiece at the uniform bending speed.

REFERENCES:
patent: 4802357 (1989-02-01), Jones
patent: 4831862 (1989-05-01), Ohashi et al.
patent: 5497647 (1996-03-01), Nagakura
patent: 5761940 (1998-06-01), Moore, Jr. et al.
patent: 5987958 (1999-11-01), Moore, Jr. et al.
patent: 6189364 (2001-02-01), Takada
patent: 1-48087 (1989-10-01), None
patent: 4-2359 (1992-01-01), None
patent: 6-16994 (1994-03-01), None
patent: 7-246427 (1995-09-01), None

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