Title:
METHOD FOR FORMING TUBULAR WALL FOR SHEET METAL MEMBER
Document Type and Number:
Japanese Patent JP3631816
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce the cost of material and the weight required for forming a tubular wall and to shorten time required for it by drawing the tubular part of a sheet metal member in the axial direction to form the tubular wall.
SOLUTION: The inner surface of a tubular part 81 as a sheet metal member is supported with a rotary die 2 with the tubular part 81 rotated with the rotary die 2; and then, the spiral ribs 51 of a spiral roller 5 is pressed against the outer surface of the tubular part 81 with the roller 5 rotated. The thickness of the tubular part 81 is moved by the spiral ribs 51, with the tubular part 81 drawn in the axial direction to form a tubular wall 8.
Inventors:
Toshiaki Kanemitsu
Shuji Kanemitsu
Hironori Nishioka
Shuji Kanemitsu
Hironori Nishioka
Application Number:
JP22671295A
Publication Date:
March 23, 2005
Filing Date:
September 04, 1995
Export Citation:
Assignee:
Kanemitsu Co., Ltd.
International Classes:
B21H1/04; (IPC1-7): B21H1/04
Domestic Patent References:
| JP7001066A | ||||
| JP54148161A | ||||
| JP3094942A |
Attorney, Agent or Firm:
Koichi Suzue
Shoji Suzue
Shoji Suzue
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