WO2007089760A3 - Thread forming fasteners for ultrasonic load measurement and control - Google Patents

Thread forming fasteners for ultrasonic load measurement and control Download PDF

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Publication number
WO2007089760A3
WO2007089760A3 PCT/US2007/002499 US2007002499W WO2007089760A3 WO 2007089760 A3 WO2007089760 A3 WO 2007089760A3 US 2007002499 W US2007002499 W US 2007002499W WO 2007089760 A3 WO2007089760 A3 WO 2007089760A3
Authority
WO
WIPO (PCT)
Prior art keywords
thread
control
load
fastener
load measurement
Prior art date
Application number
PCT/US2007/002499
Other languages
French (fr)
Other versions
WO2007089760A2 (en
Inventor
Ian E Kibblewhite
Robert Molsbergen
Original Assignee
Innovation Plus Llc
Ian E Kibblewhite
Robert Molsbergen
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 Innovation Plus Llc, Ian E Kibblewhite, Robert Molsbergen filed Critical Innovation Plus Llc
Publication of WO2007089760A2 publication Critical patent/WO2007089760A2/en
Publication of WO2007089760A3 publication Critical patent/WO2007089760A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B2031/022—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load using an ultrasonic transducer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/42—Piezoelectric device making

Abstract

An ultrasonic load measurement transducer (14) is mated with a thread-forming fastener (12) to provide a load indicating thread-forming fastener that can be used for the precise and reliable assembly of critical bolted joints, such as those in the automobile and aerospace industries, among others. Steps can then be taken to accurately measure and control the load in the thread-forming fastener during tightening, and to inspect the load in the thread-forming fastener after assembly. A similar result can be achieved for a thread-locking fastener by mating an ultrasonic transducer with the thread-locking fastener assembly.
PCT/US2007/002499 2006-01-31 2007-01-29 Thread forming fasteners for ultrasonic load measurement and control WO2007089760A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/344,028 US7467556B2 (en) 2001-01-29 2006-01-31 Thread forming fasteners for ultrasonic load measurement and control
US11/344,028 2006-01-31

Publications (2)

Publication Number Publication Date
WO2007089760A2 WO2007089760A2 (en) 2007-08-09
WO2007089760A3 true WO2007089760A3 (en) 2008-09-25

Family

ID=38327994

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/002499 WO2007089760A2 (en) 2006-01-31 2007-01-29 Thread forming fasteners for ultrasonic load measurement and control

Country Status (2)

Country Link
US (3) US7467556B2 (en)
WO (1) WO2007089760A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9339926B2 (en) 2010-05-03 2016-05-17 Innovation Plus, Llc System for performing predefined fastener installation procedures

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004027271A2 (en) * 2002-09-19 2004-04-01 Innovation Plus, L.L.C. Thread forming fasteners for ultrasonic load measurement and control
WO2002061292A1 (en) * 2001-01-29 2002-08-08 Innovation Plus, Inc. Load indicating member with identifying mark
US7467556B2 (en) * 2001-01-29 2008-12-23 Innovation Plus, Llc Thread forming fasteners for ultrasonic load measurement and control
US7698949B2 (en) * 2005-09-09 2010-04-20 The Boeing Company Active washers for monitoring bolted joints
EP2008342B1 (en) * 2006-04-06 2015-01-28 Innovation Plus, L.L.C. System for dynamically controlling the torque output of a pneumatic tool
ES2692451T3 (en) * 2006-05-26 2018-12-03 Innovation Plus, L.L.C. Probe for identification of fixing element and measurement of ultrasonic load
US20080178713A1 (en) * 2007-01-31 2008-07-31 Robert Earl Long Fastener tightening system utilizing identification technology
RU2467284C2 (en) * 2007-07-03 2012-11-20 ДжиКоудер Системз АБ Pretension monitoring
US8521448B1 (en) 2009-10-21 2013-08-27 The Boeing Company Structural analysis using measurement of fastener parameters
US8810370B2 (en) 2010-01-22 2014-08-19 The Boeing Company Wireless collection of fastener data
US8978967B2 (en) * 2007-10-31 2015-03-17 The Boeing Campany Intelligent fastener system
US8683869B2 (en) * 2008-09-04 2014-04-01 The Boeing Company Monitoring fastener preload
US20100161246A1 (en) * 2008-12-19 2010-06-24 Caterpillar Inc. Fault detection system and method
KR100939847B1 (en) 2009-05-13 2010-01-29 레미코리아 유한회사 Manufacturing method of battery terminal for startmotor
US8578778B2 (en) * 2009-10-15 2013-11-12 The Boeing Company Ultrasonic method to verify the interference fit of fasteners
DE102009060441B4 (en) * 2009-12-22 2014-11-20 Amg Intellifast Gmbh sensor element
EP2490017A1 (en) * 2011-02-18 2012-08-22 AMG Intellifast GmbH Ultrasound measurement system
US8893557B2 (en) * 2013-01-09 2014-11-25 King Fahd University Of Petroleum And Minerals Fastener tension monitoring system
EP3008439B1 (en) * 2013-06-12 2017-08-09 Atlas Copco Industrial Technique AB A method of measuring elongation of a fastener with ultrasound, performed by a power tool, and a power tool
US9483674B1 (en) 2014-03-07 2016-11-01 United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration RFID torque sensing tag system for fasteners
KR101685890B1 (en) * 2015-01-20 2016-12-28 현대자동차주식회사 Apparatus of acoustic wave sensor
EP3210725B1 (en) * 2016-02-23 2019-02-06 TE Connectivity Germany GmbH Hand-operated tool, ground contact mounting set and method for mounting a terminal onto a ground stud contact, in particular for a car body
US20180241139A1 (en) * 2017-02-23 2018-08-23 Lear Corporation Electrical terminal assembly and method of assembling the same
NO344894B1 (en) * 2018-09-12 2020-06-15 Sintef Tto As Assembly and method for measuring strain in a washer
US11022507B2 (en) * 2019-04-05 2021-06-01 Masoud Nasrollahzadeh Ultrasonic sensor
US10938447B1 (en) * 2019-08-08 2021-03-02 The Boeing Company Radio-frequency-identification-based smart fastener

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5165831A (en) * 1989-10-06 1992-11-24 Cummins Engine Company Capscrew head markings for torque-angle tightening
US5970798A (en) * 1997-09-25 1999-10-26 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ultrasonic bolt gage
US6186010B1 (en) * 1997-12-17 2001-02-13 Toyota Jidosha Kabushiki Kaisha Bolt for ultrasonic axial tension measurement

Family Cites Families (90)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US659890A (en) * 1900-06-18 1900-10-16 Otto O Stillman Eyeglass-hook.
US1909476A (en) * 1931-11-28 1933-05-16 Shakeproof Lock Washer Co Self-tapping screw
US2413797A (en) * 1945-04-16 1947-01-07 Gerotor May Corp Fastening device
US3181672A (en) 1961-06-20 1965-05-04 Gardner Denver Co Tension control wrench
US3774479A (en) 1970-06-08 1973-11-27 Chicago Pneumatic Tool Co Pneumatic marking device
US4281538A (en) 1973-05-14 1981-08-04 Thor Power Tool Company Transducer for indicating torque
US4043222A (en) 1973-05-14 1977-08-23 Thor Power Tool Company Housing construction for a power tool
US4006784A (en) 1973-05-14 1977-02-08 Thor Power Tool Company Fluid operated power tool
US3969960A (en) * 1974-05-13 1976-07-20 Dominick A Pagano Method and apparatus for tightening a bolt to exert a predetermined tension force by monitoring bolt elongation while the bolt is being installed
US3969810A (en) 1974-05-13 1976-07-20 Pagano Dominick A Method for tightening a bolt to exert a predetermined tension force by monitoring bolt elongation while the bolt is being installed
US4008772A (en) 1975-05-19 1977-02-22 Standard Pressed Steel Co. Tightening system
US4074772A (en) 1976-03-04 1978-02-21 Thor Power Tool Company Torquing tool control circuit
US4104778A (en) 1977-01-27 1978-08-08 Ingersoll-Rand Company Method and apparatus for fastener tensioning
US4316512A (en) 1979-04-04 1982-02-23 Sps Technologies, Inc. Impact wrench
US4305471A (en) * 1979-04-19 1981-12-15 Rockwell International Corporation Simplified fastening technique using the logarithmic rate method
US4294122A (en) * 1979-07-12 1981-10-13 General Dynamics Corporation Fastener incorporating ultrasonic transducer
US4295377A (en) * 1979-07-12 1981-10-20 General Dynamics Corporation Fastener incorporating removable ultrasonic transducer
US4281987A (en) 1980-01-21 1981-08-04 Cavitron Corporation Ultrasonically driven low-speed rotary motor
US4333351A (en) * 1980-02-25 1982-06-08 Raymond Engineering Inc. Method and apparatus for measuring the residual tension in a stud or a bolt
US4344138A (en) 1980-11-05 1982-08-10 Frasier Cline W Digital air brake control system
US4471657A (en) * 1981-05-12 1984-09-18 Stresstel Corporation Digital ultrasonic stress measuring method and apparatus
LU84553A1 (en) * 1982-12-24 1984-10-22 Benoit De Halleux METHOD OF MEASURING CONSTRAINT IN A MEDIUM AND ELEMENT AND ASSEMBLY FOR IMPLEMENTING THE METHOD
DE3327964A1 (en) 1983-08-03 1985-02-28 Oskar Ing.(grad.) 7073 Lorch Mohilo Method of identifying connecting bolts according to type and/or tightening specification
US4602511A (en) * 1985-06-20 1986-07-29 J. A. Green Company Method for measuring fastener stress utilizing longitudinal and transverse ultrasonic wave time-of-flight
US4649753A (en) * 1986-04-08 1987-03-17 Multifastener Corporation Verification probe
DE3720625A1 (en) * 1987-06-23 1989-01-05 Krautkraemer Gmbh HARDNESS TEST DEVICE FOR HARDNESS TESTING UNDER LOAD
US4899591A (en) * 1987-09-11 1990-02-13 Sps Technologies, Inc. Ultrasonic load indicating member, apparatus and method
US4846001A (en) * 1987-09-11 1989-07-11 Sps Technologies, Inc. Ultrasonic load indicating member
US5291789A (en) * 1987-11-10 1994-03-08 Rotabolt Limited Load indicating
US4977898A (en) * 1988-02-25 1990-12-18 Hoffrel Instruments, Inc. Miniaturized encapsulated ultrasonic transducer
US5170277A (en) * 1988-05-11 1992-12-08 Symbol Technologies, Inc. Piezoelectric beam deflector
US5042015A (en) * 1989-09-01 1991-08-20 Quantronix, Inc. Measuring method and apparatus
US5018988A (en) * 1989-10-10 1991-05-28 Sps Technologies, Inc. Electrical contact mechanism for ultrasonic transducers on fasteners
US5029480A (en) 1990-02-05 1991-07-09 Sps Technologies, Inc. Ultrasonic load indicating member
US5216622A (en) * 1990-04-27 1993-06-01 Sps Technologies, Inc. Ultrasonic drive/sense circuitry for automated fastener tightening
US5220839A (en) * 1990-08-27 1993-06-22 Ultrafast, Inc. Ultrasonic load measuring device with control feature
US5131276A (en) * 1990-08-27 1992-07-21 Ultrafast, Inc. Ultrasonic load indicating member with transducer
JPH04166732A (en) 1990-10-30 1992-06-12 Suzuki Motor Corp Ultrasonic-wave axial-tension measuring apparatus
US5150714A (en) * 1991-05-10 1992-09-29 Sri International Ultrasonic inspection method and apparatus with audible output
US5211061A (en) * 1991-07-16 1993-05-18 Goodwin Jerry J Bolt clamping force sensor and clamping force validation method
EP0535919A3 (en) 1991-10-01 1993-05-12 Michael C. Ryan Method for identifying a penetrable member
US5343785A (en) 1991-10-23 1994-09-06 Emerson Electric Co. Ultrasonic bolting control apparatus
US5303585A (en) * 1991-10-31 1994-04-19 Jtl Medical Corporation Fluid volume sensor
US5366026A (en) * 1992-08-28 1994-11-22 Nissan Motor Company, Ltd. Impact type clamping apparatus
US5807048A (en) 1992-09-03 1998-09-15 European Atomic Energy Community (Euratom) Sealing fastener with ultrasonic identifier and removal attempt indicator, and ultrasonic reading device for same
FR2696215B1 (en) 1992-09-25 1994-12-02 Serge Bras Assembly element and assembly method and machine.
US5242253A (en) * 1992-10-08 1993-09-07 Semblex Corporation Thread-forming screw
DE4243068C2 (en) * 1992-12-18 2003-06-26 Cooper Power Tools Gmbh & Co Pneumatic screwdrivers, in particular pulse or rotary screwdrivers
US6239737B1 (en) * 1994-07-15 2001-05-29 Micron Technology, Inc. Method and apparatus for attaching a radio frequency transponder to an object
CA2164187C (en) 1994-12-27 2000-02-01 Mohan L. Sanduja Protective coating on steel parts
US5726349A (en) * 1995-05-18 1998-03-10 United States Army Corps Of Engineers As Represented By The Secretary Of The Army Automated cone penetrometer
US6142023A (en) * 1995-11-17 2000-11-07 The Boeing Company Method and apparatus for applying a predetermined proof load to a cable and measuring the resultant cable length
JP3209082B2 (en) * 1996-03-06 2001-09-17 セイコーエプソン株式会社 Piezoelectric thin film element, method of manufacturing the same, and ink jet recording head using the same
WO1997042498A1 (en) * 1996-05-03 1997-11-13 Ultrafast, Inc. A technique for eliminating ambiguity when making pulse-echo timing measurements
JPH1086074A (en) 1996-09-18 1998-04-07 Hitachi Ltd Bolt tightening control method
US6053906A (en) * 1997-06-25 2000-04-25 Olympus Optical Co., Ltd. Ultrasonic operation apparatus
US6211626B1 (en) * 1997-08-26 2001-04-03 Color Kinetics, Incorporated Illumination components
US6268796B1 (en) * 1997-12-12 2001-07-31 Alfred Gnadinger Radio frequency identification transponder having integrated antenna
US6311558B1 (en) * 1998-03-23 2001-11-06 The United States Of America As Represented By The Secretary Of Commerce Ultrasonic strain gage using a motorized electromagnetic acoustic transducer
US6078874A (en) * 1998-08-04 2000-06-20 Csi Technology, Inc. Apparatus and method for machine data collection
US6167758B1 (en) * 1998-10-23 2001-01-02 Max I. Fomitchev Method and apparatus for generating ultrasonic pulses with a specified waveform shape
US6341271B1 (en) 1998-11-13 2002-01-22 General Electric Company Inventory management system and method
US6350245B1 (en) * 1998-12-22 2002-02-26 William W. Cimino Transdermal ultrasonic device and method
NL1011591C1 (en) * 1999-03-18 2000-10-03 Konink Nedschroef Holding N V Screw bolt with measuring faces.
DE19917222A1 (en) 1999-04-16 2000-11-02 Schrauben Betzer Gmbh & Co Kg Screw and device for handling such a screw
US6598900B2 (en) * 1999-04-19 2003-07-29 Automotive Systems Laboratory, Inc. Occupant detection system
US6338600B2 (en) 1999-11-15 2002-01-15 Ejot Verbindungstechnik Gmbh & Co. Kg Self-tapping, corrosion-resistant screw with hardened tip
US6338716B1 (en) * 1999-11-24 2002-01-15 Acuson Corporation Medical diagnostic ultrasonic transducer probe and imaging system for use with a position and orientation sensor
US6791465B2 (en) 2000-07-11 2004-09-14 Sergei V. Blagin Tamper indicating bolt
US6633821B2 (en) * 2001-01-08 2003-10-14 Xerox Corporation System for sensing factory workspace
US7467556B2 (en) 2001-01-29 2008-12-23 Innovation Plus, Llc Thread forming fasteners for ultrasonic load measurement and control
WO2002061292A1 (en) 2001-01-29 2002-08-08 Innovation Plus, Inc. Load indicating member with identifying mark
US7441462B2 (en) 2001-01-29 2008-10-28 Innovation Plus, Llc Load indicating member with identifying element
US6843326B2 (en) 2001-01-29 2005-01-18 Pat Technologies Limited Method and apparatus for determining when a fastener is tightened to a predetermined tightness by a pulse output tightening tool, and a pulsed output tightening tool incorporating the apparatus
WO2004027271A2 (en) 2002-09-19 2004-04-01 Innovation Plus, L.L.C. Thread forming fasteners for ultrasonic load measurement and control
JP2002239939A (en) 2001-02-19 2002-08-28 Hitachi Engineering & Services Co Ltd Tightening torque controller for bolt
US6802681B2 (en) * 2001-11-20 2004-10-12 Itw Limited Fastening element
US6671185B2 (en) 2001-11-28 2003-12-30 Landon Duval Intelligent fasteners
US20030173098A1 (en) 2002-03-18 2003-09-18 Evergreen Technologies, Llc Portable multipurpose demolition tool
US6907944B2 (en) * 2002-05-22 2005-06-21 Baker Hughes Incorporated Apparatus and method for minimizing wear and wear related measurement error in a logging-while-drilling tool
US20040045729A1 (en) 2002-09-09 2004-03-11 Lehnert Mark W. Control system for discontinuous power drive
SE526964C2 (en) 2003-12-29 2005-11-29 Atlas Copco Tools Ab Method for functional control of a pneumatic pulse nut puller and a power screwdriver system
DE102004003202B4 (en) 2004-01-22 2022-05-25 Robert Bosch Gmbh Handle with detection device
US20060102367A1 (en) 2004-02-04 2006-05-18 Etter Mark A Pneumatically powered rotary tool having linear forward and reverse switch
US20060004290A1 (en) 2004-06-30 2006-01-05 Smith Lowell S Ultrasound transducer with additional sensors
US20060157262A1 (en) 2005-01-14 2006-07-20 Jui-Yu Chen Power tool having presetable digital control of torque output
EP2008342B1 (en) * 2006-04-06 2015-01-28 Innovation Plus, L.L.C. System for dynamically controlling the torque output of a pneumatic tool
ES2692451T3 (en) 2006-05-26 2018-12-03 Innovation Plus, L.L.C. Probe for identification of fixing element and measurement of ultrasonic load
US7614303B2 (en) * 2007-03-27 2009-11-10 The United States Of America As Represented By The Secretary Of The Army Device for measuring bulk stress via insonification and method of use therefor
US20090188536A1 (en) * 2008-01-30 2009-07-30 Taiwan Supercritical Technology Co., Ltd. Ultrasonic cleaning device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5165831A (en) * 1989-10-06 1992-11-24 Cummins Engine Company Capscrew head markings for torque-angle tightening
US5970798A (en) * 1997-09-25 1999-10-26 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ultrasonic bolt gage
US6186010B1 (en) * 1997-12-17 2001-02-13 Toyota Jidosha Kabushiki Kaisha Bolt for ultrasonic axial tension measurement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9339926B2 (en) 2010-05-03 2016-05-17 Innovation Plus, Llc System for performing predefined fastener installation procedures

Also Published As

Publication number Publication date
US7946179B2 (en) 2011-05-24
US20090038402A1 (en) 2009-02-12
US20060130590A1 (en) 2006-06-22
US7644627B2 (en) 2010-01-12
US7467556B2 (en) 2008-12-23
WO2007089760A2 (en) 2007-08-09
US20100154183A1 (en) 2010-06-24

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