ELBOW MATERIAL AND PRODUCTION DEVICE AND PRODUCTION METHOD THEREOF

Title:

ELBOW MATERIAL AND PRODUCTION DEVICE AND PRODUCTION METHOD THEREOF

Document Type and Number:

WIPO Patent Application WO/2008/069269

Kind Code:

A1

Abstract:

A method and a device for bending a metal hollow thick-walled member to a specified angle without deviation of the bending center position and without separation from a semi-die when an extrusion die moves up. With a pair of guide plates turnably attached to a center pin CP kept horizontal and the axis center of the center pin intersecting with the axis center of the metal hollow thick-walled member PM, the member PM is mounted on a semi-die (82a).When metal die holding members fixed to the above guide plates and kept horizontal are inclined and separated from each other as the center pin lowers, the member PM is bent to a specified angle and held on a semi-die (82b). When the center pin that can be moved vertically by a guide member moves down to a specified bending position, a contact portion (96b) contacts the inclined surface of a stopper (92b) to allow a base plate (16) to receive a pressurizing force from an upper die via the stopper.

More Like This:

JPS6313618

LAP BENDING MACHINE

Inventors:

BANDOU TAKEYASU (JP)
FUKAYA SHINJI (JP)
SHIRAYAMA HISASHI (JP)
TSUBOI HIDEICHI (JP)

Application Number:

PCT/JP2007/073583

Publication Date:

June 12, 2008

Filing Date:

December 06, 2007

Export Citation:

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Assignee:

IHARA SCIENCE CORP (JP)
BANDOU TAKEYASU (JP)
FUKAYA SHINJI (JP)
SHIRAYAMA HISASHI (JP)
TSUBOI HIDEICHI (JP)

International Classes:

B21D7/06; B30B1/10

Foreign References:

JPS62179820A	1987-08-07
JP2005219110A	2005-08-18
JPS54154341U	1979-10-26
JPS5254664A	1977-05-04
JPS49129666A	1974-12-12
JP2002273522A	2002-09-25
JP3544183B2	2004-07-21
US20020129636A1	2002-09-19
US20020150444A1	2002-10-17
GB609504A	1948-10-01
JPS50102562A	1975-08-13

Other References: