JPS54153880A - Production of cylindrical material with wall-thick part on inner or both outer and inner surfaces from cylindrical material with wall-thick part on the outer surface - Google Patents

Production of cylindrical material with wall-thick part on inner or both outer and inner surfaces from cylindrical material with wall-thick part on the outer surface

Info

Publication number
JPS54153880A
JPS54153880A JP6315278A JP6315278A JPS54153880A JP S54153880 A JPS54153880 A JP S54153880A JP 6315278 A JP6315278 A JP 6315278A JP 6315278 A JP6315278 A JP 6315278A JP S54153880 A JPS54153880 A JP S54153880A
Authority
JP
Japan
Prior art keywords
wall
thick part
cylindrical material
eclipse
diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6315278A
Other languages
Japanese (ja)
Other versions
JPS5951372B2 (en
Inventor
Sueyoshi Nomichi
Arata Komitsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP6315278A priority Critical patent/JPS5951372B2/ja
Publication of JPS54153880A publication Critical patent/JPS54153880A/en
Publication of JPS5951372B2 publication Critical patent/JPS5951372B2/ja
Expired legal-status Critical Current

Links

Abstract

PURPOSE: A cylindrical material consisting of the straight pipe part and the annular and wall-thick part of the different material from that of the straight part is formed into an eclipse in cross section, then is made to contract in the diameter using divided dice, thus forming title cylindrical material having increased strength at the part where the different material is bonded.
CONSTITUTION: Previously, wall-thick part T is formed by using a different material K at the position where wall-thick part shall be formed on the inner or inner and outer surface of the straight pipe S and the resulting pipe is plastically deformed into eclipse in cross section at and near the wall-thick part T. Then the pipe is set in a dice consisting of half-divided parts on top and bottom sides and forming the roundness with diameter D when combined, a and a, or b and b, and compressed at and near the eclipse part to shrink the diameter, thus forming said cylindrical material having wall-thick part on both inner and outer or the inner surface.
COPYRIGHT: (C)1979,JPO&Japio
JP6315278A 1978-05-25 1978-05-25 Expired JPS5951372B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6315278A JPS5951372B2 (en) 1978-05-25 1978-05-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6315278A JPS5951372B2 (en) 1978-05-25 1978-05-25

Publications (2)

Publication Number Publication Date
JPS54153880A true JPS54153880A (en) 1979-12-04
JPS5951372B2 JPS5951372B2 (en) 1984-12-13

Family

ID=13220971

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6315278A Expired JPS5951372B2 (en) 1978-05-25 1978-05-25

Country Status (1)

Country Link
JP (1) JPS5951372B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5791141A (en) * 1980-11-27 1982-06-07 Shimano Industrial Co Production of fishing rod
JP2002224743A (en) * 2001-02-01 2002-08-13 Fuji Kikai Kosakusho:Kk Cylindrical body radial expanding or contracting method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5791141A (en) * 1980-11-27 1982-06-07 Shimano Industrial Co Production of fishing rod
JPS6345948B2 (en) * 1980-11-27 1988-09-13 Shimano Kogyo Kk
JP2002224743A (en) * 2001-02-01 2002-08-13 Fuji Kikai Kosakusho:Kk Cylindrical body radial expanding or contracting method

Also Published As

Publication number Publication date
JPS5951372B2 (en) 1984-12-13

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