JPS55112540A - Washer with axial power detection unit - Google Patents
Washer with axial power detection unitInfo
- 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
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
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)
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 |
-
1979
- 1979-02-22 JP JP2012079A patent/JPS6052369B2/en not_active Expired
Cited By (7)
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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