Title:
曲げ加工装置
Document Type and Number:
Japanese Patent JP4524001
Kind Code:
B2
Abstract:
A bending apparatus which can bend pipes and obtain as small curvature as possible without flattening or buckling easily occurring in the bending region. The bending apparatus comprises a bending die for a pipe, a clamping die which rotates together with the bending die while clamping the pipe, a pressure die which hold down the pipe, and a metal core which is inserted into the pipe and maintains the shape of the bending region, wherein the metal core is a spherical metal core rotatably supported by an arch shaped arm on the leading end of a core holder.
Inventors:
Kazuhiko Nakazato
Application Number:
JP2004263965A
Publication Date:
August 11, 2010
Filing Date:
September 10, 2004
Export Citation:
Assignee:
Sanoh Industry Co., Ltd.
International Classes:
B21D9/03; B21D7/025
Domestic Patent References:
| JP10071430A | ||||
| JP32002472B1 |
Attorney, Agent or Firm:
Masatoshi Iwane