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Title:
STEEL MATERIAL BENDING METHOD
Document Type and Number:
Japanese Patent JP2007144523
Kind Code:
A
Abstract:

To provide a steel material bending method, manufacturing a product of high quality at a low cost without penetrant inspection and X-ray inspection without considering mold cost and repair cost.

In manufacturing a bead sheet 3, previously a three-dimensional CAD drawing of sheet-like steel to be curved is developed, and from the development, a stock removal for forming a schematic shape of the steel product is set to decide the shape before bending. Subsequently, this three-dimensional CAD data is input to a control device of NC machine tool, and according to the three-dimensional CAD data, a stock removal is cut from the steel by the NC machine tool or the like to machine the steel into a schematic product shape. After machining to the schematic product shape, the steel is bent to a curved shape, and after bending, a restraining rib is fitted to keep the curved shape. Further, the periphery of the steel product is thermally cut, and final machining is performed to manufacture the bead sheet 3 made of steel.


Inventors:
TANAKA TOMOSUKE
Application Number:
JP2005338667A
Publication Date:
June 14, 2007
Filing Date:
November 24, 2005
Export Citation:
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Assignee:
YOKOHAMA RUBBER CO LTD
International Classes:
B23P15/00
Domestic Patent References:
JPH08267232A1996-10-15
JPH08327726A1996-12-13
JP2000145607A2000-05-26
JP2001295506A2001-10-26
Attorney, Agent or Firm:
Shinichi Ogawa
Takashi Noguchi
Kazuhiko Saishita