JPS571942A - Measuring method for axial force of bolt - Google Patents

Measuring method for axial force of bolt

Info

Publication number
JPS571942A
JPS571942A JP7550880A JP7550880A JPS571942A JP S571942 A JPS571942 A JP S571942A JP 7550880 A JP7550880 A JP 7550880A JP 7550880 A JP7550880 A JP 7550880A JP S571942 A JPS571942 A JP S571942A
Authority
JP
Japan
Prior art keywords
bolt
axial force
measured
iron loss
exciting
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
JP7550880A
Other languages
Japanese (ja)
Other versions
JPS6054615B2 (en
Inventor
Tadamasa Nakamura
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 JP7550880A priority Critical patent/JPS6054615B2/en
Publication of JPS571942A publication Critical patent/JPS571942A/en
Publication of JPS6054615B2 publication Critical patent/JPS6054615B2/en
Expired 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 obtain the axial force acting on the bolt with small dispersion, by exciting the primary coil of a magnetic sensor which is contacted on the top surface of a bolt head with two different exciting frequencies, and obtaining the iron loss for each exciting frequency. CONSTITUTION:The magnetic sensor 4 is contacted with the top surface of the head of the bolt 2 made of a magnetic material, and the iron loss of the bolt 2 is measured. The axial power acting on the bolt 2 is obtained from the measured iron loss. In this case, two different exciting frequencies are used to excite the primary coil 6 of the magnetic sensor 4, and the iron each exciting frequency is measured. From the difference between the two measured iron loss values, the axial force acting on the bolt 2 is obtained. In this way, the axial force of the bolt 2 characterized by small dispersion can be measured.
JP7550880A 1980-06-06 1980-06-06 Bolt axial force measurement method Expired JPS6054615B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7550880A JPS6054615B2 (en) 1980-06-06 1980-06-06 Bolt axial force measurement method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7550880A JPS6054615B2 (en) 1980-06-06 1980-06-06 Bolt axial force measurement method

Publications (2)

Publication Number Publication Date
JPS571942A true JPS571942A (en) 1982-01-07
JPS6054615B2 JPS6054615B2 (en) 1985-11-30

Family

ID=13578244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7550880A Expired JPS6054615B2 (en) 1980-06-06 1980-06-06 Bolt axial force measurement method

Country Status (1)

Country Link
JP (1) JPS6054615B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991003717A1 (en) * 1989-09-05 1991-03-21 Kohler, Emma Process and device for non-destructive determination of the prestressing condition of ferromagnetic securing elements
JP2008106923A (en) * 2006-10-27 2008-05-08 Ntn Corp Planetary-roller-type transmission

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63155810U (en) * 1987-04-01 1988-10-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991003717A1 (en) * 1989-09-05 1991-03-21 Kohler, Emma Process and device for non-destructive determination of the prestressing condition of ferromagnetic securing elements
JP2008106923A (en) * 2006-10-27 2008-05-08 Ntn Corp Planetary-roller-type transmission

Also Published As

Publication number Publication date
JPS6054615B2 (en) 1985-11-30

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