The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 07, 2006

Filed:

Jan. 17, 2001
Applicants:

Junichi Koyama, Kanagawa, JP;

Kazunari Imai, Kanagawa, JP;

Hitoshi Omata, Kanagawa, JP;

Osamu Hayama, Kanagawa, JP;

Hidekatsu Ikeda, Kanagawa, JP;

Inventors:

Junichi Koyama, Kanagawa, JP;

Kazunari Imai, Kanagawa, JP;

Hitoshi Omata, Kanagawa, JP;

Osamu Hayama, Kanagawa, JP;

Hidekatsu Ikeda, Kanagawa, JP;

Assignee:

Amada Company, Limited, Kanagawa, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 5/02 (2006.01);
U.S. Cl.
CPC ...
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.


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