JPS556232A - Steel pipe centering and marking-off tool - Google Patents

Steel pipe centering and marking-off tool

Info

Publication number
JPS556232A
JPS556232A JP7819278A JP7819278A JPS556232A JP S556232 A JPS556232 A JP S556232A JP 7819278 A JP7819278 A JP 7819278A JP 7819278 A JP7819278 A JP 7819278A JP S556232 A JPS556232 A JP S556232A
Authority
JP
Japan
Prior art keywords
pipe
steel pipe
marking
tool
turned
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
JP7819278A
Other languages
Japanese (ja)
Inventor
Kazunori Kiyono
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP7819278A priority Critical patent/JPS556232A/en
Publication of JPS556232A publication Critical patent/JPS556232A/en
Pending legal-status Critical Current

Links

Landscapes

  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

PURPOSE: To automatically center a steel pipe so that a circle may be easily drawn with respect to a rough end by turning a screw rod and by bringing a fixing jig into abutment contact with the inner side of the steel pipe thereby to fix the tool.
CONSTITUTION: If a handle 20 is turned, a screw rod 5 is turned, while being supported on a bearing body 6, and a screw cylinder 13 is moved in the direction of a bearing 4. Arms 9 and 16 expand a plate 41 through a supporting member 39 and force the same into contact with the inner wall of a steel pipe 1. Then, the rod 5 is fixed in alignment with the pipe 1. Then, a bearing body 22 is fixed to the rod 5 under the condition in which a marking-off pin 28 is in contact with the end of the pipe 1. A screw 32 is fastened to fix a compass 29. After that, if the compass 29 is turned, a circle can be drawn about the center of the pipe 1 at the end of the pipe 1.
COPYRIGHT: (C)1980,JPO&Japio
JP7819278A 1978-06-28 1978-06-28 Steel pipe centering and marking-off tool Pending JPS556232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7819278A JPS556232A (en) 1978-06-28 1978-06-28 Steel pipe centering and marking-off tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7819278A JPS556232A (en) 1978-06-28 1978-06-28 Steel pipe centering and marking-off tool

Publications (1)

Publication Number Publication Date
JPS556232A true JPS556232A (en) 1980-01-17

Family

ID=13655121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7819278A Pending JPS556232A (en) 1978-06-28 1978-06-28 Steel pipe centering and marking-off tool

Country Status (1)

Country Link
JP (1) JPS556232A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466701A (en) * 1981-08-25 1984-08-21 Optrex Corporation Highly reliable electrooptical device and process for manufacturing the same
JPH025004U (en) * 1988-06-22 1990-01-12
KR101185204B1 (en) 2010-09-29 2012-09-21 현대제철 주식회사 Device of inserting inside coil bore for preventing collapse and apparatus of inserting the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466701A (en) * 1981-08-25 1984-08-21 Optrex Corporation Highly reliable electrooptical device and process for manufacturing the same
JPH025004U (en) * 1988-06-22 1990-01-12
KR101185204B1 (en) 2010-09-29 2012-09-21 현대제철 주식회사 Device of inserting inside coil bore for preventing collapse and apparatus of inserting the same

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