WO2003069268A1 - Tool for measuring the diameter of a body with polygonal or circular cross section - Google Patents

Tool for measuring the diameter of a body with polygonal or circular cross section Download PDF

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Publication number
WO2003069268A1
WO2003069268A1 PCT/NO2003/000060 NO0300060W WO03069268A1 WO 2003069268 A1 WO2003069268 A1 WO 2003069268A1 NO 0300060 W NO0300060 W NO 0300060W WO 03069268 A1 WO03069268 A1 WO 03069268A1
Authority
WO
WIPO (PCT)
Prior art keywords
arms
tool according
measuring
distance sensor
diameter
Prior art date
Application number
PCT/NO2003/000060
Other languages
French (fr)
Inventor
Odd Vigo MØLMANN
Original Assignee
Moelmann Odd Vigo
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 Moelmann Odd Vigo filed Critical Moelmann Odd Vigo
Priority to US10/504,178 priority Critical patent/US7752770B2/en
Priority to JP2003568343A priority patent/JP3983740B2/en
Priority to EP03705531A priority patent/EP1485671A1/en
Priority to AU2003206452A priority patent/AU2003206452A1/en
Publication of WO2003069268A1 publication Critical patent/WO2003069268A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/22—Feeler-pin gauges, e.g. dial gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters

Definitions

  • the present invention is related to a tool for measuring the diameter of a body with polygonal or circular cross section.
  • the most used tool for measuring the outside diameter of cylindrical bodies or the key width for hexagonal heads on screws or nuts are slide calipers of various forms or compasses for feeling the diameter with subsequent measuring of the compasses' opening, mostly with a ruler. Also tapes for measuring the diameter's circumference are being used.
  • the calipers measure the distance between two diametrically opposite points, and therefore require the access to diametrically opposite sides of the cylindrical body, respectively the hexagonal head, which in many cases is difficult and in other cases impossible. Slide calipers require also in practice the use of two hands to separate the two parts of the calipers. The design of the calipers also requires suitable rooms for storage because of the size and the form.
  • the measuring tool for cylindrical bodies with circular cross sections are known from among others US 1 389 486, US 1 553 961 and GB 650 588.
  • the measuring tool according to the present invention avoids the above mentioned drawbacks, while other benefits are attained.
  • the measuring tool is defined by the features set forth in the claims.
  • Figures 1 and 2 on the drawing show an embodiment of the invention during two phases of measuring of the key width of a hexagonal nut
  • figure 3 shows a side view of a situation on figure 2
  • figure 4 and 5 show, corresponding to figure 1 and two, measuring of the diameters of a cylindrical body with circular cross section
  • figure 6 shows schematically the instrument for measuring of two circular bodies with different diameters
  • figure 7 shows another embodiment of the present invention measuring the inside diameter of the circle
  • figure 8 shows the device on figure 7 measuring the outside diameter.
  • the measuring tool according to the present invention comprises two arms 1 arranged in an angle to each other.
  • the angle between the arms 1 may preferably be 60° for example, to make contact to two sides of a hexagonal head on a nut or bolt, as shown on figures 1 and 2.
  • the angle between the arms 1 for measuring of bodies with circular cross section may on the other hand be more or less than 60° to fit special purposes that are for measuring of larger or smaller diameters.
  • a distance sensor device 2 Centrally between the two arms 1 is provided a distance sensor device 2 -which is arranged to contact a circular arc in the central axis.
  • the two arms 1 each contact aside of a cylinder with circular cross section, the arms will make tangents to the cylinder's outside circumference.
  • the circle's diameter may be calculated, that is the distance between the two tangent points and the distance from the tangent points to the measuring point.
  • the measuring tool has a latching device 5 whereby the user can latch the distance sensor device 2 when this and the arms 1 have reached contact with the object 4 to be measured.
  • the measurement may be kept and read separately, for example on a measuring disc or a viewing device 3, in millimetres or other units of measurement.
  • the latching device 5 may also be arranged as an activating device, that is that the measurement takes place by activating the latching device 5 and that the latching device 5 registers the measuring result.
  • the measuring sensor device 2 may be a physical, preferably spring loaded needle or rod which makes direct contact against the measured object 4. Other measuring methods may be used, for example, the distance sensor device 2 may be a transmitter for infrared ray, ultrasound, laser beams etc.
  • a circle's diameter may be calculated on the basis of the placement of the three contact points with respect to each other, based on the fact that these three points all are on the same circle.
  • Measuring results may be shown on the viewing device 3 in the form of a pointer against the scale that shows the diameter in millimetre or other unit of measurement, or the viewing device 3 may be a digital display or other device on which the circle's diameter may be read.
  • the reading may also be transferred and logged by a cable or a wireless connection as radio signals, for example to a hand held or stationary computer for similar device.
  • the measuring tool according to the invention may be embodied in small dimensions, and may be able to measure relatively large diameters, respectively large hexagonal nuts. This way the user may keep the tool on his body without hampering his movement.
  • the arms 1 may be equipped with a telescopic adjustable extensions or replaceable arms 1 which may also have telescopic extensions.
  • Essential for measuring of correct diameter is that the length of the two arms 1 is sufficient to assure that the insides of the arms may contact the circle or measure object 4 as tangents to the circumference circle of the measured object 4. This is necessary to assure that the diametrical calculation of the diameter is correct.
  • the measuring tool may be embodied in different ways, depending on the user and the area of use. It is suitable that the measuring tool has a possibility calibration, not only at production, but also at a later point in time.
  • the measuring tool may be made substantially smaller than sliding calipers and compass.
  • Figures 7 and 8 show another embodiment of the measuring tool according to the present invention.
  • the points of the arms 1 are used to contact an in cross section circular body's inside or outside for measuring of inside or outside circle diameters.
  • the length of the arms 1 or the angle between them may be chosen suitably according to the use.
  • the distance sensor device 2 may be chosen according to the use.
  • the measuring tool registers if the distance sensor device 2 senses a point outside or inside the point 1, respectively a line between these, that is measuring of inside or outside diameter.
  • the viewing device 3 shows after calculations, the circle diameter whether the measurement is made as an inside measurement or an outside measurement, by basing the calculation on the distance from the connecting line between the points of the arms 1.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Tool for measuring of the diameter of a body with circular cross section, where two arms (1) are provided in a fixed angle to another, in that a distance sensor device (2) is provided axially between the two arms (1), in that the distance sensor device (2) is adapted to register a contact point for the distance sensor device (2) against the body with respect to the contact points of the arms against the body, and that a viewing device (3) is adapted to calculate and show the diameter of the circle on the basis of the three contact points on the circle.

Description

Tool for measuring the diameter of a body with polygonal or circular cross section
The present invention is related to a tool for measuring the diameter of a body with polygonal or circular cross section.
The most used tool for measuring the outside diameter of cylindrical bodies or the key width for hexagonal heads on screws or nuts, are slide calipers of various forms or compasses for feeling the diameter with subsequent measuring of the compasses' opening, mostly with a ruler. Also tapes for measuring the diameter's circumference are being used.
The calipers measure the distance between two diametrically opposite points, and therefore require the access to diametrically opposite sides of the cylindrical body, respectively the hexagonal head, which in many cases is difficult and in other cases impossible. Slide calipers require also in practice the use of two hands to separate the two parts of the calipers. The design of the calipers also requires suitable rooms for storage because of the size and the form.
The measuring tool for cylindrical bodies with circular cross sections are known from among others US 1 389 486, US 1 553 961 and GB 650 588. The measuring tool according to the present invention avoids the above mentioned drawbacks, while other benefits are attained. The measuring tool is defined by the features set forth in the claims.
Figures 1 and 2 on the drawing show an embodiment of the invention during two phases of measuring of the key width of a hexagonal nut, figure 3 shows a side view of a situation on figure 2, figure 4 and 5 show, corresponding to figure 1 and two, measuring of the diameters of a cylindrical body with circular cross section, figure 6 shows schematically the instrument for measuring of two circular bodies with different diameters, figure 7 shows another embodiment of the present invention measuring the inside diameter of the circle, and figure 8 shows the device on figure 7 measuring the outside diameter.
The measuring tool according to the present invention comprises two arms 1 arranged in an angle to each other. The angle between the arms 1 may preferably be 60° for example, to make contact to two sides of a hexagonal head on a nut or bolt, as shown on figures 1 and 2. The angle between the arms 1 for measuring of bodies with circular cross section may on the other hand be more or less than 60° to fit special purposes that are for measuring of larger or smaller diameters.
Centrally between the two arms 1 is provided a distance sensor device 2 -which is arranged to contact a circular arc in the central axis. When the two arms 1 each contact aside of a cylinder with circular cross section, the arms will make tangents to the cylinder's outside circumference. By registering these three points with respect to each other, the circle's diameter may be calculated, that is the distance between the two tangent points and the distance from the tangent points to the measuring point.
Suitably the measuring tool has a latching device 5 whereby the user can latch the distance sensor device 2 when this and the arms 1 have reached contact with the object 4 to be measured. Thereby the measurement may be kept and read separately, for example on a measuring disc or a viewing device 3, in millimetres or other units of measurement. The latching device 5 may also be arranged as an activating device, that is that the measurement takes place by activating the latching device 5 and that the latching device 5 registers the measuring result. The measuring sensor device 2 may be a physical, preferably spring loaded needle or rod which makes direct contact against the measured object 4. Other measuring methods may be used, for example, the distance sensor device 2 may be a transmitter for infrared ray, ultrasound, laser beams etc. Also other mechanical measuring methods than the above mentioned may be used. Essential is that a circle's diameter may be calculated on the basis of the placement of the three contact points with respect to each other, based on the fact that these three points all are on the same circle. Measuring results may be shown on the viewing device 3 in the form of a pointer against the scale that shows the diameter in millimetre or other unit of measurement, or the viewing device 3 may be a digital display or other device on which the circle's diameter may be read. The reading may also be transferred and logged by a cable or a wireless connection as radio signals, for example to a hand held or stationary computer for similar device.
The measuring tool according to the invention may be embodied in small dimensions, and may be able to measure relatively large diameters, respectively large hexagonal nuts. This way the user may keep the tool on his body without hampering his movement. The arms 1 may be equipped with a telescopic adjustable extensions or replaceable arms 1 which may also have telescopic extensions.
Essential for measuring of correct diameter is that the length of the two arms 1 is sufficient to assure that the insides of the arms may contact the circle or measure object 4 as tangents to the circumference circle of the measured object 4. This is necessary to assure that the diametrical calculation of the diameter is correct.
The measuring tool may be embodied in different ways, depending on the user and the area of use. It is suitable that the measuring tool has a possibility calibration, not only at production, but also at a later point in time. The measuring tool may be made substantially smaller than sliding calipers and compass. Figures 7 and 8 show another embodiment of the measuring tool according to the present invention. The points of the arms 1 are used to contact an in cross section circular body's inside or outside for measuring of inside or outside circle diameters. As for the earlier embodiment, the length of the arms 1 or the angle between them may be chosen suitably according to the use. Similarly, the distance sensor device 2 may be chosen according to the use. The measuring tool registers if the distance sensor device 2 senses a point outside or inside the point 1, respectively a line between these, that is measuring of inside or outside diameter.
The viewing device 3 shows after calculations, the circle diameter whether the measurement is made as an inside measurement or an outside measurement, by basing the calculation on the distance from the connecting line between the points of the arms 1.

Claims

P a t e n t C l a i m s
1. Tool for measuring of the diameter of a body having a polygonal or circular cross section, characterized in that two arms (1) are provided at a fixed angle of 60° to each other, that a distance sensor device (2) is provided axially between the two arms (1), that the distance sensor device (2) is adapted to register the geometrical position of a contact point between the distance sensor device (2) and the body in relation to the contact points of the arms against the body, and that a viewing device (3) is adapted to calculate and show the diameter of a circle through the three contact points with the body.
2. Tool according to the previous claim, characterized in that the distance sensor device (2) is a transmitter/receiver for ultrasound, infrared rays, laser beams or similar.
3. Tool according to claim 1, characterized in that the distance sensor device (2) is a preferably spring loaded mechanical sensor.
4. Tool according to the previous claims, characterized in that the arms (1) have telescopically adjustable expanders.
5. Tool according to the previous claims, characterized in that the viewing device (3) is a digital display.
6. Tool according to claims 1-4, characterized in that the viewing device (3) is a pointer against a scale.
7. Tool according to previous claims, characterized in that a latching device (5) is provided for after activating to lock the measured value for later reading and/or processing.
8. Tool according to claims 1-6, characterized in that a latching device (5) is provided for at activating to perform the measurement and register the measuring result.
9. Tool according to the previous claims, characterized in that the facing sides of the arms 1 are adopted to be tangent to the outside circular surface of the body (4).
10. Tool according to claims 1-8, characterized in that the points of the arms (1) are adapted to contact the outside or inside circular surface of the body (4).
PCT/NO2003/000060 2002-02-18 2003-02-17 Tool for measuring the diameter of a body with polygonal or circular cross section WO2003069268A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US10/504,178 US7752770B2 (en) 2002-02-18 2003-02-17 Tool for measuring the diameter of a body with polygonal or circular cross section
JP2003568343A JP3983740B2 (en) 2002-02-18 2003-02-17 Tool for measuring the diameter of an object having a polygonal or circular cross section
EP03705531A EP1485671A1 (en) 2002-02-18 2003-02-17 Tool for measuring the diameter of a body with polygonal or circular cross section
AU2003206452A AU2003206452A1 (en) 2002-02-18 2003-02-17 Tool for measuring the diameter of a body with polygonal or circular cross section

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20020795A NO316700B1 (en) 2002-02-18 2002-02-18 Maleverktoy
NO20020795 2002-02-18

Publications (1)

Publication Number Publication Date
WO2003069268A1 true WO2003069268A1 (en) 2003-08-21

Family

ID=19913341

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2003/000060 WO2003069268A1 (en) 2002-02-18 2003-02-17 Tool for measuring the diameter of a body with polygonal or circular cross section

Country Status (7)

Country Link
US (1) US7752770B2 (en)
EP (1) EP1485671A1 (en)
JP (1) JP3983740B2 (en)
CN (1) CN1633580A (en)
AU (1) AU2003206452A1 (en)
NO (1) NO316700B1 (en)
WO (1) WO2003069268A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024033571A1 (en) * 2022-08-09 2024-02-15 Pjk Forest Tech Oy A method for calibrating the log thickness measurement device of a forest harvester and an apparatus for measuring the diameter of a tree

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US8091249B2 (en) * 2007-08-24 2012-01-10 Peter Galbert Galbert caliper
TW201028644A (en) * 2009-01-23 2010-08-01 Hou-Fei Hu Gauge structure
IT1397518B1 (en) * 2009-12-21 2013-01-16 Tenova Spa METHOD AND APPARATUS FOR DETECTION OF GEOMETRY OF OPERATING CYLINDERS.
CN102759317A (en) * 2011-04-29 2012-10-31 东莞信易电热机械有限公司 Outer circular arc rule
CN102322786B (en) * 2011-08-10 2013-01-16 山东力诺瑞特新能源有限公司 Measuring tool for vacuum pipe opening of solar water heater
CN103115578A (en) * 2013-01-24 2013-05-22 北京林业大学 Instrument for measuring diameter of tree at high position
CN103256898A (en) * 2013-04-12 2013-08-21 北京林业大学 Instrument for conveniently measuring diameter of high portion of tree and height
CN104482870B (en) * 2014-12-18 2018-07-06 成都铁安科技有限责任公司 A kind of locomotive wheel diameter detection method
US10288400B2 (en) * 2015-06-01 2019-05-14 Wesley Keith Johnson Nut and stud size gauge
CN105222706A (en) * 2015-09-01 2016-01-06 徐州工业职业技术学院 Greenhouse corps stem stalk, fruit size measure wireless acquisition system
USD782351S1 (en) 2015-09-15 2017-03-28 Brandon Zahora Bolt-measuring tool
US10066928B1 (en) * 2016-10-06 2018-09-04 George Cooper Nut measuring device
JP6867582B2 (en) * 2017-02-22 2021-04-28 富士通株式会社 Signal processing system
CN108592756A (en) * 2018-05-07 2018-09-28 山东华源莱动内燃机有限公司 It measures and cubing and method of the arc structure central plane apart from size
US11609080B2 (en) * 2020-06-25 2023-03-21 Volvo Car Corporation Assembly, adapter device, and method for measuring the height of a flange

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US2560571A (en) * 1947-11-03 1951-07-17 Aline B Hawkins Gauge
GB2103800A (en) * 1981-08-05 1983-02-23 Whitebarn Ind Limited Measuring instrument
FR2617957A1 (en) * 1987-07-07 1989-01-13 Giraud Louis Instrument for measuring the diameters of trees
US4928392A (en) * 1988-02-16 1990-05-29 General Electric Company Diameter gauge
DE4241335A1 (en) * 1992-08-18 1994-02-24 Chuo Electronics Co Ldt Measuring outer dia. for cylindrical object e.g. tree - using angle between two caliper measuring arms which engage object, and V=shaped stop which abuts object between arms and connected to caliper pivot point by known distance
US5428903A (en) * 1993-04-02 1995-07-04 Pocci; Silvano Measuring instrument

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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2560571A (en) * 1947-11-03 1951-07-17 Aline B Hawkins Gauge
GB2103800A (en) * 1981-08-05 1983-02-23 Whitebarn Ind Limited Measuring instrument
FR2617957A1 (en) * 1987-07-07 1989-01-13 Giraud Louis Instrument for measuring the diameters of trees
US4928392A (en) * 1988-02-16 1990-05-29 General Electric Company Diameter gauge
DE4241335A1 (en) * 1992-08-18 1994-02-24 Chuo Electronics Co Ldt Measuring outer dia. for cylindrical object e.g. tree - using angle between two caliper measuring arms which engage object, and V=shaped stop which abuts object between arms and connected to caliper pivot point by known distance
US5428903A (en) * 1993-04-02 1995-07-04 Pocci; Silvano Measuring instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024033571A1 (en) * 2022-08-09 2024-02-15 Pjk Forest Tech Oy A method for calibrating the log thickness measurement device of a forest harvester and an apparatus for measuring the diameter of a tree

Also Published As

Publication number Publication date
CN1633580A (en) 2005-06-29
NO316700B1 (en) 2004-04-05
NO20020795D0 (en) 2002-02-18
US20050120575A1 (en) 2005-06-09
US7752770B2 (en) 2010-07-13
AU2003206452A1 (en) 2003-09-04
EP1485671A1 (en) 2004-12-15
JP2005517910A (en) 2005-06-16
NO20020795L (en) 2003-08-19
JP3983740B2 (en) 2007-09-26

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