Title:
MANDREL FOR BENDING
Document Type and Number:
Japanese Patent JPH06304667
Kind Code:
A
Abstract:
PURPOSE: To bend a hollow work in a bent part without an unwilling deformation of a crush, etc., and together to efficiently and easily pull a mandrel after bending.
CONSTITUTION: Plural abutting members 3 are arranged in a prescribed interval in series, and together deformed restricting bodies 2 are arranged with interposing between the contact members 3. Each deformed restricting body 2 is made in a subject that the water is enclosed in a rubber tube 5. Then, a wire 13 is penetrated in them freely slidable a drop stopping body 14 is screwed on an one side end of the wire 13 and a nut 15 is screwed on the other side.
Inventors:
TASHIRO YASUSHI
YOKOYAMA MASAO
YOKOYAMA MASAO
Application Number:
JP9790993A
Publication Date:
November 01, 1994
Filing Date:
April 23, 1993
Export Citation:
Assignee:
SHOWA ALUMINUM CORP
International Classes:
B21D9/01; (IPC1-7): B21D9/01
Attorney, Agent or Firm:
Hisayoshi Shimizu (2 outside)