JPH03170001A - Measuring instrument for mean internal diameter of pipe - Google Patents

Measuring instrument for mean internal diameter of pipe

Info

Publication number
JPH03170001A
JPH03170001A JP30995489A JP30995489A JPH03170001A JP H03170001 A JPH03170001 A JP H03170001A JP 30995489 A JP30995489 A JP 30995489A JP 30995489 A JP30995489 A JP 30995489A JP H03170001 A JPH03170001 A JP H03170001A
Authority
JP
Japan
Prior art keywords
pipe
value
arm
internal diameter
roller
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
JP30995489A
Other languages
Japanese (ja)
Inventor
Hitoshi Iijima
Takefumi Narahara
Ikuo Yamada
Kazuo Yamazaki
Original Assignee
Nkk Corp
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 Nkk Corp filed Critical Nkk Corp
Priority to JP30995489A priority Critical patent/JPH03170001A/en
Publication of JPH03170001A publication Critical patent/JPH03170001A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To accurately and speedily measure the mean internal diameter of the pipe by calculating the mean internal diameter of the pipe by a computing element from measured values obtained by a peripheral length meter, displaying the value on a display device, and comparing the calculated mean internal diameter value with a set value, and generating an alarm when the specific value is exceeded.
CONSTITUTION: The rotary shaft 7a of a motor 7 is positioned on the prolongation of the axis of the pipe 5. An arm 8 is fixed to the rotary shaft 7a at right angles to the rotary shaft 7a and a roller 9 is supported pivotally atop of the arm 8. The peripheral length meter 1 consists of the motor 7, the arm 8, and a roller 9 and is pressed against the inner peripheral surface of the pipe 5 by a spring 10 extended in the arm 8 by the roller 9. When the motor 7 is driven, the arm 8 rotates around the rotary shaft 7a and the roller 9 is therefore rotated; and the peripheral length of the pipe 5 is measured from the number of turns of the roller 9 when one round of the arm 9 is made and this value is converted into a signal, which is outputted to a computing element 2 connected to the peripheral length meter 1. The computing element 2 calculates the mean internal diameter of the pipe 5 from the measured value of the peripheral length of the pipe 5 and converts the value into a signal, which is outputted to a display device 3 and a warning device 4 connected to the computing element 2.
COPYRIGHT: (C)1991,JPO&Japio
JP30995489A 1989-11-29 1989-11-29 Measuring instrument for mean internal diameter of pipe Pending JPH03170001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30995489A JPH03170001A (en) 1989-11-29 1989-11-29 Measuring instrument for mean internal diameter of pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30995489A JPH03170001A (en) 1989-11-29 1989-11-29 Measuring instrument for mean internal diameter of pipe

Publications (1)

Publication Number Publication Date
JPH03170001A true JPH03170001A (en) 1991-07-23

Family

ID=17999356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30995489A Pending JPH03170001A (en) 1989-11-29 1989-11-29 Measuring instrument for mean internal diameter of pipe

Country Status (1)

Country Link
JP (1) JPH03170001A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0618264A (en) * 1992-07-03 1994-01-25 Ohbayashi Corp Marking device
KR100802039B1 (en) * 2001-07-11 2008-02-12 주식회사 포스코 Bearing Inside Calibrator Of Large Bushing type
JP2015506473A (en) * 2011-12-29 2015-03-02 ヴァルレック オイル アンド ガスフランス Device for measuring the internal or external contour of tubular components
CN108871159A (en) * 2018-06-14 2018-11-23 钟维栋 A kind of detection device of S-shaped pipe fitting

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0618264A (en) * 1992-07-03 1994-01-25 Ohbayashi Corp Marking device
KR100802039B1 (en) * 2001-07-11 2008-02-12 주식회사 포스코 Bearing Inside Calibrator Of Large Bushing type
JP2015506473A (en) * 2011-12-29 2015-03-02 ヴァルレック オイル アンド ガスフランス Device for measuring the internal or external contour of tubular components
CN108871159A (en) * 2018-06-14 2018-11-23 钟维栋 A kind of detection device of S-shaped pipe fitting
CN108871159B (en) * 2018-06-14 2020-06-05 台州宝诚科技服务有限公司 Detection apparatus for S-shaped pipe fitting is used

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