Title:
PRESS WORKING METHOD AND METAL MOLD
Document Type and Number:
Japanese Patent JP2014144463
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a press working method and a metal mold used for the press working method, capable of precision progressive feed work, by reducing scrap, while having a simple process.SOLUTION: The press working method executes working of including punching and compression while successively feeding a metal plate to a plurality of working stages in the metal mold, and includes a first punching process of projecting a punching blank material by roughly a plate thickness of the metal plate by using a die of a roundly chamfered shoulder part, a compression process of forming a recess-projection on a surface of the blank material by compressing the projected blank material in the plate thickness direction and a second punching process of completely punching the compressed blank material from the metal plate.
Inventors:
TERAMOTO KAZUHIKO
Application Number:
JP2013013052A
Publication Date:
August 14, 2014
Filing Date:
January 28, 2013
Export Citation:
Assignee:
EKO INSTRUMENTS TRADING
International Classes:
B21J5/02; B21D22/02; B21D28/10; B21J13/02; B21D53/20
Domestic Patent References:
| JPS4627567B1 | ||||
| JP2001324577A | 2001-11-22 | |||
| JPWO2006080356A1 | 2008-08-07 | |||
| JPH11267770A | 1999-10-05 |
Attorney, Agent or Firm:
Sakaoka 範穗
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