Title:
FORMATION OF LATERAL HOLE ON TUBE MEMBER
Document Type and Number:
Japanese Patent JP3310509
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To easily form a high strength lateral hole with a flange part in a few process number and at low cost without cutting a tube member in a method for forming the lateral hole in the tube member.
SOLUTION: An opening part 21 of almost elliptic shape is formed on the circumference face of a stainless tube 20, inside the stainless tube 20, a die body 40 whose upper cross-section shape is made in a similar shape being able to be inserted in the opening part 21, whose lower cross-section shape is formed in an opening shape of required lateral hole and which is provided with the circumference face formed continuously in the smooth curve face like from the upper side to the lower side is received, and the die body 40 is pulled out from the opening part 21 to the outside through pulling shafts 42, 43, etc. The opening periphery of the opening part 21 is pulled up following to raising of the die body 40, an outside projected flange part 22 is formed.
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| WO/2001/007183 | SHEET METAL MEMBER AND METHOD OF MANUFACTURING THE MEMBER |
| WO/2012/146379 | METHOD FOR PRODUCING CONNECTION PORTS |
Inventors:
Yamada grandson
Tetsuo Yajima
Makoto Teradaira
Tetsuo Yajima
Makoto Teradaira
Application Number:
JP28659195A
Publication Date:
August 05, 2002
Filing Date:
October 06, 1995
Export Citation:
Assignee:
Yamada Manufacturing Co., Ltd.
Nagano Seiko Metal Co., Ltd.
Minamihara Industry Co., Ltd.
Nagano Seiko Metal Co., Ltd.
Minamihara Industry Co., Ltd.
International Classes:
B21C37/29; B21D19/08; B21D51/16; (IPC1-7): B21D19/08; B21C37/29
Domestic Patent References:
| JP5410266A | ||||
| JP5431076A | ||||
| JP5431075A | ||||
| JP5356156A | ||||
| JP6434522A | ||||
| JP57121834A |
Attorney, Agent or Firm:
Hiroaki Saegusa