JPS5741823A - Recess part forming method on peripheral surface of metallic pipe - Google Patents

Recess part forming method on peripheral surface of metallic pipe

Info

Publication number
JPS5741823A
JPS5741823A JP11671980A JP11671980A JPS5741823A JP S5741823 A JPS5741823 A JP S5741823A JP 11671980 A JP11671980 A JP 11671980A JP 11671980 A JP11671980 A JP 11671980A JP S5741823 A JPS5741823 A JP S5741823A
Authority
JP
Japan
Prior art keywords
peripheral surface
metallic pipe
pipe
outer peripheral
forming method
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
JP11671980A
Other languages
Japanese (ja)
Inventor
Fumito Saito
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP11671980A priority Critical patent/JPS5741823A/en
Publication of JPS5741823A publication Critical patent/JPS5741823A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To form recessed parts on a metallic pipe surface avoiding the generation of waves on recessed bottom surfaces and a buckling on the peripheral surface of said pipe, by pressing the outer peripheral surface of the metallic pipe with the aid of plunger punches by simultaneously adding the hydraulic pressure to the inner surface of the pipe.
CONSTITUTION: Plunger punches 5, having horizontal bottom-end surfaces 5' and moving vertically along upper and lower guide holes 4 provided to a upper die 2, are allowed to press-contact on the outer peripheral surface of a horizontally placed metallic pipe 1 held by the upper die 2 and a lower die 3. Recessed parts 6, having flat bottom surfaces 8 approximately vertical side-wall surfaces 9, 9, are formed by pressing the outer peripheral surface of the metallic pipe 1 with the aid of plunger punches 5 and by simultaneously adding the hydraulic pressure 7 to the inner peripheral surface of the pipe 1. The metallic pipe 1 has said recessed parts 6 capable of hanging other parts and has a beautiful appearance because of no buckling.
COPYRIGHT: (C)1982,JPO&Japio
JP11671980A 1980-08-25 1980-08-25 Recess part forming method on peripheral surface of metallic pipe Pending JPS5741823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11671980A JPS5741823A (en) 1980-08-25 1980-08-25 Recess part forming method on peripheral surface of metallic pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11671980A JPS5741823A (en) 1980-08-25 1980-08-25 Recess part forming method on peripheral surface of metallic pipe

Publications (1)

Publication Number Publication Date
JPS5741823A true JPS5741823A (en) 1982-03-09

Family

ID=14694107

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11671980A Pending JPS5741823A (en) 1980-08-25 1980-08-25 Recess part forming method on peripheral surface of metallic pipe

Country Status (1)

Country Link
JP (1) JPS5741823A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4885472A (en) * 1972-02-18 1973-11-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4885472A (en) * 1972-02-18 1973-11-13

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