JPS5766809A - Method of cutting pipe off - Google Patents

Method of cutting pipe off

Info

Publication number
JPS5766809A
JPS5766809A JP14135480A JP14135480A JPS5766809A JP S5766809 A JPS5766809 A JP S5766809A JP 14135480 A JP14135480 A JP 14135480A JP 14135480 A JP14135480 A JP 14135480A JP S5766809 A JPS5766809 A JP S5766809A
Authority
JP
Japan
Prior art keywords
pipe
main shaft
die
mandrel
sheared
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
JP14135480A
Other languages
Japanese (ja)
Inventor
Hideyuki Mizutani
Morihisa Yoshioka
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.)
NTN Corp
Original Assignee
NTN Toyo Bearing 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 NTN Toyo Bearing Co Ltd filed Critical NTN Toyo Bearing Co Ltd
Priority to JP14135480A priority Critical patent/JPS5766809A/en
Publication of JPS5766809A publication Critical patent/JPS5766809A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide a cut-off pipe of high accuracy in inside and outside diameters and shape, by shearing off a pipe while gradually expanding it and by thereafter effecting restrictive ring rolling on the pipe.
CONSTITUTION: A cutting-off die 10 and an outside diameter correcting die 15 are fitted in a first main shaft 11. A pipe 12 is then set. A mandrel 13 supported by a second main shaft 14 is inserted into the pipe 12. The second main shaft 14 is elevated perpendicularly to its axis by the rotation of the first main shaft 11. The pipe 12 is sheared off by the die 10 and the mandrel 13. The sheared-off pipe 12' is expanded. The inside and outside diameters of the pipe 12' are corrected by the die 15 and the mandrel 13.
COPYRIGHT: (C)1982,JPO&Japio
JP14135480A 1980-10-08 1980-10-08 Method of cutting pipe off Pending JPS5766809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14135480A JPS5766809A (en) 1980-10-08 1980-10-08 Method of cutting pipe off

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14135480A JPS5766809A (en) 1980-10-08 1980-10-08 Method of cutting pipe off

Publications (1)

Publication Number Publication Date
JPS5766809A true JPS5766809A (en) 1982-04-23

Family

ID=15290016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14135480A Pending JPS5766809A (en) 1980-10-08 1980-10-08 Method of cutting pipe off

Country Status (1)

Country Link
JP (1) JPS5766809A (en)

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