Title:
金属パイプの溝加工方法及び溝加工装置
Document Type and Number:
Japanese Patent JP3610653
Kind Code:
B2
Abstract:
Each of specific rollers which corresponds to one of the grooves is disposed in a circumference of the metal pipe at equal intervals and is pressed against the periphery of the metal pipe 10, thereby forming a plurality of the grooves at the same time. Because each of the grooves is formed by a specific forming roller, a plurality of the grooves can be formed separately, and the material of the wall between the grooves is prevented from being drawn. Thus, the grooves can be formed into a desired shape.
Inventors:
Tetsuya Sakakibara
Yoshitaka Kuroda
Yoshitaka Kuroda
Application Number:
JP33953995A
Publication Date:
January 19, 2005
Filing Date:
December 26, 1995
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F16L21/08; B21D17/04; B21H8/00; (IPC1-7): B21H8/00
Domestic Patent References:
| JP6207615A | ||||
| JP6320223A |
Attorney, Agent or Firm:
Yoji Ito