JPS55112540A - Washer with axial power detection unit - Google Patents

Washer with axial power detection unit

Info

Publication number
JPS55112540A
JPS55112540A JP2012079A JP2012079A JPS55112540A JP S55112540 A JPS55112540 A JP S55112540A JP 2012079 A JP2012079 A JP 2012079A JP 2012079 A JP2012079 A JP 2012079A JP S55112540 A JPS55112540 A JP S55112540A
Authority
JP
Japan
Prior art keywords
washer
axial power
strain gauge
screwing
bolt
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.)
Granted
Application number
JP2012079A
Other languages
Japanese (ja)
Other versions
JPS6052369B2 (en
Inventor
Yukiyoshi Kawabata
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 JP2012079A priority Critical patent/JPS6052369B2/en
Publication of JPS55112540A publication Critical patent/JPS55112540A/en
Publication of JPS6052369B2 publication Critical patent/JPS6052369B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Bolts, Nuts, And Washers (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

PURPOSE: To make it possible to measure rapidly and easily the screwing axial power of a bolt, etc., by fitting a strain gauge to the outside circumference edge of the washer of a dish-shaped spring form and by detecting the axial power for screwing on the basis of expansion of the outside circumference of the washer.
CONSTITUTION: Ring groove 2 having a U-shaped section is provided on the outside circumfernce edge of washer 1 of a dish-shaped spring form, and strain gauge 4 of a lead wire form is fitted to ring groove 2 through an electric insulating fixing agent and is fixed. Then, auxiliary washer 7 is placed under washer 1 and is slided to be brought into contact with washer 1 through conical slope 8. When auxiliary washer 7 is fitted under the neck of bolt and is screwed, washer 1 is displaced in the radius direction to change the electric resistance of strain gauge 4, and this change of strain gauge 4 is measured because this electric resistance change is proportional to the screwing axial power of the bolt, thus measuring the screwing axial power of the screw.
COPYRIGHT: (C)1980,JPO&Japio
JP2012079A 1979-02-22 1979-02-22 Screw axial force measuring device Expired JPS6052369B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012079A JPS6052369B2 (en) 1979-02-22 1979-02-22 Screw axial force measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012079A JPS6052369B2 (en) 1979-02-22 1979-02-22 Screw axial force measuring device

Publications (2)

Publication Number Publication Date
JPS55112540A true JPS55112540A (en) 1980-08-30
JPS6052369B2 JPS6052369B2 (en) 1985-11-19

Family

ID=12018253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012079A Expired JPS6052369B2 (en) 1979-02-22 1979-02-22 Screw axial force measuring device

Country Status (1)

Country Link
JP (1) JPS6052369B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995033917A1 (en) * 1994-06-09 1995-12-14 Industrial Rollformers Pty. Ltd. Washer for use in mining
JP2014105843A (en) * 2012-11-29 2014-06-09 Mitsubishi Electric Corp Washer
WO2015075823A1 (en) * 2013-11-22 2015-05-28 株式会社サンノハシ Bolt, nut, and strain measurement system
US9719900B1 (en) 2016-04-26 2017-08-01 Northrop Grumman Systems Corporation Strain-gauged washer for measuring bolt preload
WO2018024449A1 (en) * 2016-08-01 2018-02-08 Fischerwerke Gmbh & Co. Kg Fastener and method for determining a relocation of a fastener

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995033917A1 (en) * 1994-06-09 1995-12-14 Industrial Rollformers Pty. Ltd. Washer for use in mining
US5885034A (en) * 1994-06-09 1999-03-23 Industrial Rollformers Pty. Ltd. Washer for use in mining
JP2014105843A (en) * 2012-11-29 2014-06-09 Mitsubishi Electric Corp Washer
WO2015075823A1 (en) * 2013-11-22 2015-05-28 株式会社サンノハシ Bolt, nut, and strain measurement system
JPWO2015075823A1 (en) * 2013-11-22 2017-03-16 株式会社サンノハシ Bolt, nut and strain measurement system
US9719900B1 (en) 2016-04-26 2017-08-01 Northrop Grumman Systems Corporation Strain-gauged washer for measuring bolt preload
WO2018024449A1 (en) * 2016-08-01 2018-02-08 Fischerwerke Gmbh & Co. Kg Fastener and method for determining a relocation of a fastener

Also Published As

Publication number Publication date
JPS6052369B2 (en) 1985-11-19

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