Title:
CUP STRUCTURE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2018/186214
Kind Code:
A1
Abstract:
[Problem] To manufacture a cup structure by forging while ensuring a flat surface of an end surface that is pressed of a peripheral portion of a material and preventing the occurrence of burrs.
[Solution] A profile 1 manufacturing method disclosed in the present description is provided with: a mounting step of mounting a material 9 to dies (mouth die 21, molding die 22); a forging step of pressing an inside portion 912 of a peripheral portion 911 of an end surface 91 of the material 9 using a molding punch 31, causing a press-contact member (punch sleeve 32) to abut against the peripheral portion 911 of the end surface 91 of the material 9, and shaping the profile 1 in a state in which a space S is ensured under a projection portion 4 which is formed by a part of the material 9 being pushed out by an opposing end surface 311 of the molding punch 31 into an relief hole 26; and an extraction step of extracting the profile 1 from the molding punch 31 by pushing out a peripheral portion 8 of the profile 1 by means of the punch sleeve 32.
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Inventors:
MASUYAMA TAKEHIKO (JP)
Application Number:
PCT/JP2018/012022
Publication Date:
October 11, 2018
Filing Date:
March 26, 2018
Export Citation:
Assignee:
MATEC CO LTD (JP)
International Classes:
B21K21/04; B21J5/06; B21J13/14
Foreign References:
| JP2006007260A | 2006-01-12 | |||
| JP2014223644A | 2014-12-04 | |||
| JPS6422434A | 1989-01-25 | |||
| JP2014027516A | 2014-02-06 |
Other References:
See also references of EP 3434388A4
Attorney, Agent or Firm:
AKATSUKI UNION PATENT FIRM (JP)
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