JPS61296925A - Forming method for precise cylinder - Google Patents

Forming method for precise cylinder

Info

Publication number
JPS61296925A
JPS61296925A JP13881485A JP13881485A JPS61296925A JP S61296925 A JPS61296925 A JP S61296925A JP 13881485 A JP13881485 A JP 13881485A JP 13881485 A JP13881485 A JP 13881485A JP S61296925 A JPS61296925 A JP S61296925A
Authority
JP
Japan
Prior art keywords
cylindrical body
shape
joining parts
cylindrical
outer side
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.)
Pending
Application number
JP13881485A
Other languages
Japanese (ja)
Inventor
Masayoshi Fujita
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.)
Fuji Machine Works Co Ltd
Original Assignee
Fuji Machine Works Co Ltd
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 Fuji Machine Works Co Ltd filed Critical Fuji Machine Works Co Ltd
Priority to JP13881485A priority Critical patent/JPS61296925A/en
Publication of JPS61296925A publication Critical patent/JPS61296925A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To form a cylinder in precise cylindrical shape by shrinking the cylindrical body obtd. by bending a short sheet and by expanding in cylindrical shape the cylindrical body after bending both joining parts to the inner side and welding said joining parts.
CONSTITUTION: The cylindrical body 6 in the shape of its both end parts being bent to the outer side more than the center part of the outer side face 6a and the bend starting part 7 and bend finishing part 8 of both joining parts being slightly expanded to the outer side as well as obtd. by passing a short sheet 5 in the gas of the driving rolls 1, 2, 3 and adjusting roll 4 of a roll forming machine. Said cylindrical body 6 is then shrinked with its compression by sliding divided dies 10a, 10b in the arrow mark radial direction and made in cylindrical shape. Both joining parts 7, 8 are made in flat shape, etc. and in the shape recessed to the inner side by the pressing member 11 fitted to the recessed part 10c formed on the inner peripheral wall of the divided die 10a of one part moreover. The seam part 9 of both joining part 7, 8 in said shape is then welded over the whole length. Thereafter the cylindrical body 6 is fitted to the outer periphery of a segment 15, a cone 16 is pushed in along the inner side slope face 15a of the segment 15 and the cylindrical body 6 is expanded.
COPYRIGHT: (C)1986,JPO&Japio
JP13881485A 1985-06-24 1985-06-24 Forming method for precise cylinder Pending JPS61296925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13881485A JPS61296925A (en) 1985-06-24 1985-06-24 Forming method for precise cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13881485A JPS61296925A (en) 1985-06-24 1985-06-24 Forming method for precise cylinder

Publications (1)

Publication Number Publication Date
JPS61296925A true JPS61296925A (en) 1986-12-27

Family

ID=15230865

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13881485A Pending JPS61296925A (en) 1985-06-24 1985-06-24 Forming method for precise cylinder

Country Status (1)

Country Link
JP (1) JPS61296925A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010184808A (en) * 2009-02-13 2010-08-26 Seiko Epson Corp Method of manufacturing carrier roller, carrier roller, carrying unit and printer
JP2014151359A (en) * 2013-02-13 2014-08-25 Chuo Spring Co Ltd Method of manufacturing annular member
JP2018103231A (en) * 2016-12-27 2018-07-05 株式会社富士機械工作所 Shell manufacturing apparatus and shell manufacturing method
US11183373B2 (en) 2017-10-11 2021-11-23 Honeywell International Inc. Multi-patterned sputter traps and methods of making

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55156618A (en) * 1979-05-22 1980-12-05 Nippon Kokan Kk <Nkk> Manufacture of thick-walled steel pipe
JPS55156619A (en) * 1979-05-22 1980-12-05 Nippon Kokan Kk <Nkk> Manufacture of thick-walled steel pipe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55156618A (en) * 1979-05-22 1980-12-05 Nippon Kokan Kk <Nkk> Manufacture of thick-walled steel pipe
JPS55156619A (en) * 1979-05-22 1980-12-05 Nippon Kokan Kk <Nkk> Manufacture of thick-walled steel pipe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010184808A (en) * 2009-02-13 2010-08-26 Seiko Epson Corp Method of manufacturing carrier roller, carrier roller, carrying unit and printer
JP2014151359A (en) * 2013-02-13 2014-08-25 Chuo Spring Co Ltd Method of manufacturing annular member
JP2018103231A (en) * 2016-12-27 2018-07-05 株式会社富士機械工作所 Shell manufacturing apparatus and shell manufacturing method
US11183373B2 (en) 2017-10-11 2021-11-23 Honeywell International Inc. Multi-patterned sputter traps and methods of making

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