JPS54153769A - Production of cylinder member having elevations on its inner or both faces from pipe with outer elevation - Google Patents

Production of cylinder member having elevations on its inner or both faces from pipe with outer elevation

Info

Publication number
JPS54153769A
JPS54153769A JP6315178A JP6315178A JPS54153769A JP S54153769 A JPS54153769 A JP S54153769A JP 6315178 A JP6315178 A JP 6315178A JP 6315178 A JP6315178 A JP 6315178A JP S54153769 A JPS54153769 A JP S54153769A
Authority
JP
Japan
Prior art keywords
pipe
oval
elevation
faces
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
JP6315178A
Other languages
Japanese (ja)
Other versions
JPS5546260B2 (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 JP6315178A priority Critical patent/JPS54153769A/en
Publication of JPS54153769A publication Critical patent/JPS54153769A/en
Publication of JPS5546260B2 publication Critical patent/JPS5546260B2/ja
Granted legal-status Critical Current

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  • Forging (AREA)

Abstract

PURPOSE: For simple, good-yield production of cylindrical member having elevated portions on its inner and outer surfaces or only inner surface, a pipe having on its outer face an elevated portion is plastically deformed in an oval shape and pressed to contract pipe diameter in the oval major axis direction by use of plurally devided die.
CONSTITUTION: Centrifugal cast or build-up welded peripheral elevation T is pressured on the whole of its surface through back plate X, X. This forms the elevation T in a substantial oval shape and nearabout straight pipe S in a slight oval shape. To prevent excessive straight pipe S oval formation, a core metal P is inserted, as required. The minor axis H of the elevation T oval is made smaller than the die internal diameter D'. The oval shaped elevation T and near straight pipe is pressed in the major direction to contract its diameter, by use of a pair of half dies having semicircular faces that will combine to form a circle of the diameter D' of the die. Thus, the method produces pipe having elevated prtions on its inner and outer faces or only on inner faces.
COPYRIGHT: (C)1979,JPO&Japio
JP6315178A 1978-05-25 1978-05-25 Production of cylinder member having elevations on its inner or both faces from pipe with outer elevation Granted JPS54153769A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6315178A JPS54153769A (en) 1978-05-25 1978-05-25 Production of cylinder member having elevations on its inner or both faces from pipe with outer elevation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6315178A JPS54153769A (en) 1978-05-25 1978-05-25 Production of cylinder member having elevations on its inner or both faces from pipe with outer elevation

Publications (2)

Publication Number Publication Date
JPS54153769A true JPS54153769A (en) 1979-12-04
JPS5546260B2 JPS5546260B2 (en) 1980-11-21

Family

ID=13220943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6315178A Granted JPS54153769A (en) 1978-05-25 1978-05-25 Production of cylinder member having elevations on its inner or both faces from pipe with outer elevation

Country Status (1)

Country Link
JP (1) JPS54153769A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57131004U (en) * 1981-02-05 1982-08-16

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161634A (en) * 1982-03-20 1983-09-26 Stanley Electric Co Ltd Speed alarm device for vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52140461A (en) * 1976-05-20 1977-11-24 Koshin Giken Kk Method and device for molding staged building up pipes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52140461A (en) * 1976-05-20 1977-11-24 Koshin Giken Kk Method and device for molding staged building up pipes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57131004U (en) * 1981-02-05 1982-08-16

Also Published As

Publication number Publication date
JPS5546260B2 (en) 1980-11-21

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