Title:
MANUFACTURING METHOD OF METALLIC FABRICATED MATERIAL
Document Type and Number:
Japanese Patent JP2019000871
Kind Code:
A
Abstract:
To improve accuracy of an outer diameter of a metallic fabricated material having a circular tube part.SOLUTION: A manufacturing method of a metallic fabricated material includes a circular tube part formation step S300, and an extension step S302. In the circular tube part formation step S300, an un-illustrated metal plate is plastically processed so that the metallic fabricated material is formed. In the extension step S302, a rotary punch is inserted into the circular tube part in the state where a flange part of the metallic fabricated material is fixed. Hereby, the circular tube part is extended.SELECTED DRAWING: Figure 4
Inventors:
FUJII NAOKI
Application Number:
JP2017117414A
Publication Date:
January 10, 2019
Filing Date:
June 15, 2017
Export Citation:
Assignee:
KANEMITSU KK
International Classes:
B21D51/18; A47G19/22; B21D22/16; B21D22/30
Domestic Patent References:
| JPS5215472A | 1977-02-05 | |||
| JPS55161535A | 1980-12-16 |
Attorney, Agent or Firm:
Shoji Suzue
Tetsuro Yoshimura
Tetsuro Yoshimura