Title:
バーリング加工方法
Document Type and Number:
Japanese Patent JP6531819
Kind Code:
B2
Abstract:
In performing burring processing on a sheet-like member, the following processes are performed: a punching process of performing punching processing of the sheet-like member; a hole expansion process of performing hole expansion processing of a punched hole formed by the punching process; a re-punching process of performing punching processing again on a portion surrounding the punched hole expanded by force in the hole expansion process; and a burring process of pushing a portion surrounding a re-punched hole that is a punched hole formed by the re-punching process and forming a vertical wall.
More Like This:
| WO/2022/080431 | BURRING MACHINING MATERIAL |
Inventors:
Eishi Isogai
Yutaka Mikazuki
Riki Okamoto
Yutaka Mikazuki
Riki Okamoto
Application Number:
JP2017505378A
Publication Date:
June 19, 2019
Filing Date:
March 09, 2016
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21D19/08
Domestic Patent References:
| JP2001269723A | ||||
| JP2015036147A | ||||
| JP810872A | ||||
| JP201524427A |
Attorney, Agent or Firm:
Koji Hagiwara
Tetsuo Kanamoto
Naoki Ogita
Takashi Saito
Takuya Mine
Tetsuo Kanamoto
Naoki Ogita
Takashi Saito
Takuya Mine