FORGING DEVICE - SHOWA DENKO KK

Title:

FORGING DEVICE

Document Type and Number:

WIPO Patent Application WO/2012/086638

Kind Code:

A1

Abstract:

Provided is a forging device that has a simplified structure and is capable of producing a high-quality forged article. This forging device has a punch (1) and a shaping hole (22), and is also provided with back pressure generating means (15), a back pressure transmission mechanism, and dice (2) having a helical blade part (23) formed on an inner peripheral surface of the shaping hole. The back pressure transmission mechanism is provided with a rotation-side transmission member having a back pressure plate (40), as well as with a non-rotation-side transmission member. The back pressure plate (40) is disposed inside the shaping hole (22) in an appropriate state. When a forging material (W1) is cast into the shaping hole (22) and the back pressure plate (40) is pressed downward by metallic material, the back pressure plate (40) is guided by the blade part (23) of the shaping hole (22) and is thereby made to descend while rotating around an axis, and the back pressure caused by the back pressure generating means (15) is imparted to the metallic material via the back pressure transmission mechanism.

Inventors:

ENDO DAISUKE (JP)
UCHIDA TOMOO (JP)

Application Number:

PCT/JP2011/079495

Publication Date:

June 28, 2012

Filing Date:

December 20, 2011

Export Citation:

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Assignee:

SHOWA DENKO KK (JP)
ENDO DAISUKE (JP)
UCHIDA TOMOO (JP)

International Classes:

B21J5/12; B21J13/14; B21K1/12

Foreign References:

JP2002096139A	2002-04-02
JPH0857570A	1996-03-05
JPS3716159B1
JP2011073033A	2011-04-14
JP2007075884A	2007-03-29

Other References: