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Patent Searching and Data


Title:
FORGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/208669
Kind Code:
A1
Abstract:
Provided is a forging device capable of forming a forged product that is lightweight, compact, and has excellent dimensional precision in terms of the height of protruding parts. The present invention is a forging device for producing a forged product wherein protruding parts are formed on a base plate. The forging device is equipped with a die 1 having a forming hole 11, and a punch 2 that is driven into the forming hole 11. Protruding part formation recesses 32 are formed in the base surface of the forming hole 11 in the die 1 and/or the front-end surface of the punch 2. A base plate formation section 31 is formed between the front-end surface of the punch 2 and the base surface of the forming hole 11. A burr formation section 33 is formed between the outer peripheral surface of the front-end surface of the punch 2 and the inner peripheral surface of the forming hole 11. The inner peripheral surface 13 of the forming hole 11 is formed as an inclined surface that is inclined with respect to an axial center X, and that draws closer to the axial center X in the pressing direction of the punch 2.

Inventors:
IGARASHI Kazuo (SHOWA DENKO K.K. 7840, Aza Nagauchi, Kitakata-sh, Fukushima 45, 〒9660845, JP)
Application Number:
JP2017/016021
Publication Date:
December 07, 2017
Filing Date:
April 21, 2017
Export Citation:
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Assignee:
SHOWA DENKO K.K. (13-9, Shiba Daimon 1-Chome Minato-k, Tokyo 18, 〒1058518, JP)
International Classes:
B21J5/02; H01L23/36
Foreign References:
JP2015050318A2015-03-16
JPH0857573A1996-03-05
JP2010074024A2010-04-02
Attorney, Agent or Firm:
SHIMIZU Yoshihito et al. (Idemitsu Nagahori Building, 4-26 Minamisemba 3-chome, Chuo-ku, Osaka-sh, Osaka 81, 〒5420081, JP)
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