JPS5639131A - Manufacture of coaxial reducing pipe - Google Patents

Manufacture of coaxial reducing pipe

Info

Publication number
JPS5639131A
JPS5639131A JP11490479A JP11490479A JPS5639131A JP S5639131 A JPS5639131 A JP S5639131A JP 11490479 A JP11490479 A JP 11490479A JP 11490479 A JP11490479 A JP 11490479A JP S5639131 A JPS5639131 A JP S5639131A
Authority
JP
Japan
Prior art keywords
pipe
reducing
die
cylindrical
press dies
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
JP11490479A
Other languages
Japanese (ja)
Inventor
Ichihei Yamaguchi
Masuko Fukazawa
Original Assignee
Ichihei Yamaguchi
Masuko Fukazawa
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 Ichihei Yamaguchi, Masuko Fukazawa filed Critical Ichihei Yamaguchi
Priority to JP11490479A priority Critical patent/JPS5639131A/en
Publication of JPS5639131A publication Critical patent/JPS5639131A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To simply deform the inclined reducing part of the reducing pipe so as to be radially set, by inserting the cylindrical press dies into both ends of the cylindrical outer die being freely slidably fitted to the outer surface of the coaxial reducing pipe obtained by the drawing work, and by forcibly pressing the cylindrical press dies toward the middle of the outer die.
CONSTITUTION: The pipe 1, obtained by the drawing work, is provided with the reducing part 1c inclining against the radius of the pipe 1 between the middle large diameter part 1a and the small diameter parts 1b on both ends. The cylindrical outer die 2 longer than the large diameter part 1a of the pipe 1 is freely slidably fitted to outer surface of the pipe 1; and the cylindrical press dies 3, 3 are inserted into both ends of the outer die 2, so as to be freely slidable along the outer surface of the small diameter parts 1b of the pipe 1. Next, both of press dies 3, 3 are forcibly pressed toward the middle of the outer die 2, or otherwise, one of the press dies 3, 3 is fixed and another is forcibly pressed similarly to above. Hereby, the neighborhood of the reducing parts 1c cause the plastic deformation and is tight pressed to the inner end plane 3a of the press die 3; as a result, the reducing pipe 1' with the radially set reducing parts 1c' is formed.
COPYRIGHT: (C)1981,JPO&Japio
JP11490479A 1979-09-07 1979-09-07 Manufacture of coaxial reducing pipe Pending JPS5639131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11490479A JPS5639131A (en) 1979-09-07 1979-09-07 Manufacture of coaxial reducing pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11490479A JPS5639131A (en) 1979-09-07 1979-09-07 Manufacture of coaxial reducing pipe

Publications (1)

Publication Number Publication Date
JPS5639131A true JPS5639131A (en) 1981-04-14

Family

ID=14649531

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11490479A Pending JPS5639131A (en) 1979-09-07 1979-09-07 Manufacture of coaxial reducing pipe

Country Status (1)

Country Link
JP (1) JPS5639131A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62247192A (en) * 1986-04-18 1987-10-28 Matsushita Refrig Co Sealing device for closed type motor-driven compressor
JPS636126U (en) * 1986-06-14 1988-01-16
JP2011062717A (en) * 2009-09-16 2011-03-31 Jatco Ltd Method for forming step on outer peripheral surface of shaft-shaped member having circular section

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50118958A (en) * 1974-03-05 1975-09-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50118958A (en) * 1974-03-05 1975-09-18

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62247192A (en) * 1986-04-18 1987-10-28 Matsushita Refrig Co Sealing device for closed type motor-driven compressor
JPS636126U (en) * 1986-06-14 1988-01-16
JP2011062717A (en) * 2009-09-16 2011-03-31 Jatco Ltd Method for forming step on outer peripheral surface of shaft-shaped member having circular section

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