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Patent Searching and Data


Title:
BURRING PROCESSING METHOD AND BURRING PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/126696
Kind Code:
A1
Abstract:
A burring processing method is provided with a disposition step wherein a plate-shaped member to be processed, wherein is formed a through hole, is disposed such that a punch is positioned on one side of the member to be processed in the direction of plate thickness and a pad is positioned on the side opposite to the one side of the member to be processed in the direction of plate thickness, and a pushing step wherein a flange is formed by, while applying pressure to the peripheral edge of the through hole by the punch and the pad in the direction of plate thickness of the member to be processed, pushing the peripheral edge of the through hole with the punch by moving the punch relatively to the aforementioned opposite side of the member to be processed.

Inventors:
ITO, Yasuhiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
Application Number:
JP2017/002027
Publication Date:
July 27, 2017
Filing Date:
January 20, 2017
Export Citation:
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Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)
International Classes:
B21D19/08
Foreign References:
JPS62183916A1987-08-12
JPS5020387A1975-03-04
Other References:
See also references of EP 3406363A4
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (3-17, Shinjuku 4-chome Shinjuku-k, Tokyo 22, 〒1600022, JP)
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