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JPS57161526A - Measuring method for axial tension of bolt - Google Patents

Measuring method for axial tension of bolt

Info

Publication number
JPS57161526A
JPS57161526A JP4627281A JP4627281A JPS57161526A JP S57161526 A JPS57161526 A JP S57161526A JP 4627281 A JP4627281 A JP 4627281A JP 4627281 A JP4627281 A JP 4627281A JP S57161526 A JPS57161526 A JP S57161526A
Authority
JP
Japan
Prior art keywords
bolt
axial tension
magnetic sensor
head part
watt loss
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
JP4627281A
Other languages
Japanese (ja)
Other versions
JPH0318137B2 (en
Inventor
Kenji Sakashita
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.)
Shibaura Mechatronics Corp
Original Assignee
Shibaura Engineering Works 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 Shibaura Engineering Works Co Ltd filed Critical Shibaura Engineering Works Co Ltd
Priority to JP4627281A priority Critical patent/JPS57161526A/en
Publication of JPS57161526A publication Critical patent/JPS57161526A/en
Publication of JPH0318137B2 publication Critical patent/JPH0318137B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

PURPOSE:To measure the axial tension of a bolt having the ruggedness of characteristics having relieve on the top surface of its head part by providing a magnetic sensor constituted by winding primary and secondary coils on an iron core of a U-shape in the cross section on the side face of the head part of the bolt and measuring watt loss. CONSTITUTION:A magnetic sensor 10 constituted by winding primary and secondary coils on an iron core 7 of roughly a U-shape in section is provided in the position 1/3-2/5 the height HH' passing the center of one side face of the head part 5 of a bolt 3 tightening assembled structures 1, 2. The watt loss W in the direction where the iron core direction of a magnetic sensor 10 intersects directly with the HH' is proportional to the axial tension of the bolt and the max. watt loss can be measured. The watt loss W' in the direction coinciding with the HH' is roughly constant with respect to the axial tension. Hence, if W-W' is multiplied by a proportional constant, the axial tension is determined. In spite of the presence of ruggedness of relieved characters or the like in the head part of the bolt, the axial tension is determined by providing the magnetic sensor on the side face of the head of the bolt.
JP4627281A 1981-03-31 1981-03-31 Measuring method for axial tension of bolt Granted JPS57161526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4627281A JPS57161526A (en) 1981-03-31 1981-03-31 Measuring method for axial tension of bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4627281A JPS57161526A (en) 1981-03-31 1981-03-31 Measuring method for axial tension of bolt

Publications (2)

Publication Number Publication Date
JPS57161526A true JPS57161526A (en) 1982-10-05
JPH0318137B2 JPH0318137B2 (en) 1991-03-11

Family

ID=12742587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4627281A Granted JPS57161526A (en) 1981-03-31 1981-03-31 Measuring method for axial tension of bolt

Country Status (1)

Country Link
JP (1) JPS57161526A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3093641A1 (en) * 2015-05-11 2016-11-16 Siemens Aktiengesellschaft Method for determining the axial tensile force introduced into a component
CN109435607A (en) * 2018-11-28 2019-03-08 黄琦 Heavy-duty car suspension anti-drop device
DE102023206067A1 (en) 2023-06-28 2025-01-02 Robert Bosch Gesellschaft mit beschränkter Haftung preload measuring device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134331A (en) * 1979-04-06 1980-10-20 Toshiba Corp Fastening load detector for bolt
JPS55155223A (en) * 1979-05-23 1980-12-03 Shibaura Eng Works Co Ltd Measuring method of main stress of magnetic material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134331A (en) * 1979-04-06 1980-10-20 Toshiba Corp Fastening load detector for bolt
JPS55155223A (en) * 1979-05-23 1980-12-03 Shibaura Eng Works Co Ltd Measuring method of main stress of magnetic material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3093641A1 (en) * 2015-05-11 2016-11-16 Siemens Aktiengesellschaft Method for determining the axial tensile force introduced into a component
WO2016180554A1 (en) 2015-05-11 2016-11-17 Siemens Aktiengesellschaft Method for determining an axial tensile force applied to a component
US10436657B2 (en) 2015-05-11 2019-10-08 Nord-Lock Switzerland Gmbh Method for determining an axial tensile force applied to a component
CN109435607A (en) * 2018-11-28 2019-03-08 黄琦 Heavy-duty car suspension anti-drop device
DE102023206067A1 (en) 2023-06-28 2025-01-02 Robert Bosch Gesellschaft mit beschränkter Haftung preload measuring device

Also Published As

Publication number Publication date
JPH0318137B2 (en) 1991-03-11

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