WO2000064639A1 - Systeme de serrage de fixations munies d'un dispositif d'emission et de detection d'ondes acoustiques ultrasonores - Google Patents

Systeme de serrage de fixations munies d'un dispositif d'emission et de detection d'ondes acoustiques ultrasonores Download PDF

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Publication number
WO2000064639A1
WO2000064639A1 PCT/SE2000/000800 SE0000800W WO0064639A1 WO 2000064639 A1 WO2000064639 A1 WO 2000064639A1 SE 0000800 W SE0000800 W SE 0000800W WO 0064639 A1 WO0064639 A1 WO 0064639A1
Authority
WO
WIPO (PCT)
Prior art keywords
socket portion
output shaft
fastener
lib
nut
Prior art date
Application number
PCT/SE2000/000800
Other languages
English (en)
Inventor
Tobias Axel LINDBÄCK
Original Assignee
Atlas Copco Tools Ab
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 Atlas Copco Tools Ab filed Critical Atlas Copco Tools Ab
Publication of WO2000064639A1 publication Critical patent/WO2000064639A1/fr

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
    • G01L5/246—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 using acoustic waves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1425—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by electrical means

Definitions

  • the invention relates to a system for tightening fasteners of the type having integrated ultra- sonic sound wave generating and sensing means by using a power wrench carrying a torque transferring nut socket, wherein a probe unit is used for transferring electrical signals between the power wrench and the fastener past the nut socket .
  • the probe unit has to have an extremity of different length to reach through to the fastener. Since the probe unit is mounted in the output shaft of the power wrench, the probe unit has to be exchanged when changing from a nut socket of one length to a shorter or longer nut socket . This is disadvantageous since it causes rather time consuming and costly production stops .
  • the main object of the invention is to provide an improved torque application system for tightening fasteners having integral electrically activated ultra-sonic sound wave generating and sensing devices, including a power wrench having an output shaft of a standard type provided with a contact means, and a set of nut sockets of different dimensions all fitting the same output shaft shape and dimension, and wherein no time consuming rebuilt of the power wrench is required to adapt the signal transferring probe unit to different nut socket dimensions.
  • Fig. 1 shows a side view of a power nutrunner forming part of the invention.
  • Fig. 2 shows, on a larger scale and partly in section, the output end of the power nuturunner shown in Fig. 1.
  • Fig. 3a shows a longitudinal section through a nut socket forming part of the invention, as well as a threaded fastener to be engaged by the nut socket .
  • Fig. 3b shows a longitudinal section through another nut socket also forming part of the invention, as well as a threaded fastener to be engaged by the socket .
  • Fig. 4a shows, on a larger scale and partly in section, a nut socket probe unit according to the invention.
  • Fig. 4b shows, on a larger scale and partly in section, an alternatively designed probe unit according to the invention.
  • the torque application system shown m drawings comprises mainly an electrically powered angle nutrunner 10 and a set of nut sockets 11a, lib etc. of different sizes and lengths for engaging threaded fasteners like screws 12a, 12b etc.
  • the power nutrunner 10 comprises a housing 14, a handle 15 and an angle head 16 with an output shaft 17. The latter is formed with a connection portion 19 of square cross section for connection to a standard type nut socket .
  • the nutrunner nousmg 14 contains an electric motor (not shown) which via a reduction gearing is connected to the angle head 16 and the output shaft 17 and which is supplied with electric power via a cable 18 connected to the nutrunner through the handle 15.
  • the cable 18 connects the nutrunner 10 to a remotely located operation control unit, including power supply means .
  • each one of the threaded fasteners to be tightened by this system comprises an electrically activated ultra-sonic sound wave transducer 21.
  • the latter is of a piezo-elect ⁇ c type and is formed integrally with the head of the fastener 12a, 12b etc.
  • electric pulses are delivered to the sound wave generating means of the fasteners 12a, 12b etc. so as to produce ultra-sonic sound wave pulses through the fasteners.
  • the reflected sound waves are transformed to electric pulses by the integral sound wave sensing means on the fasteners, and these electric pulses are fed back to the operation control unit via the contact element 20, the internal wiring in the nutrunner 14 and the cable 18.
  • the travel time of the sound waves through the fastener is calculated, and the actual axial load on the fastener is determined.
  • Each one of the nut sockets 11a, lib etc. comprises a forward socket portion 22, a rear socket port ⁇ on23, and a central portion 24.
  • the forward socket portion 22 is formed to fit the head of the fastener 12, usually of a hexagonal cross section, and having an axial extent substantially identical with the axial extent of the fastener head.
  • the axial extent of the forward socket portion 22 is defined by a shoulder 25.
  • Tne rear socket portion 23 is of a square cross section to receive a standard type square ended nutrunner output shaft 17.
  • the central portion 24 is the part of the nut socket that separates tne forward socket portion 22 from the rear socket portion 23 and comprises a sleeve insert 26.
  • each one of the nut sockets 11a, lib etc. is provided with a probe unit 28 which is secured m the sleeve insert 26 of the central portion 24.
  • this probe unit 28 has a rigid rear extremity 29 for co-operation with the contact element 20 of the output shaft 17, and a telescopically extendible forward extremity 30 which is axially biassed by a spring 31 to its extended position for getting into a proper contact with the fastener.
  • one type of probe units 28, irrespective of the length of the nut socket, comprises a sleeve element 32 which is rigidly secured in the sleeve insert 26, and a spring 33 located inside the sleeve element 32 and acting on the rear end of the forward extremity 30.
  • the latter is limited in its forward movement by a shoulder 36 engaging a inner shoulder 37 in the sleeve element 32.
  • the sleeve element 32 forms the rear extremity 29.
  • the length of the probe unit 28 is likewise adapted to the nut soc ⁇ et length.
  • the rear extremity 29 of the probe unit 28 is formed by the sleeve element 32 which is immovably secured to the sleeve insert 26 m the nut socket, whereas the forward extremity 30 is axially extendible and/or depressible to maintain a proper co-operation with the sound wave transducer 21 on the fastener. Due to the fact that the rear extremity 29 of the probe unit 28 is immovable, the contact element 20 m the nutrunner output shaft 17 is axially movable to ensure a proper co-operation with the probe unit 28. It is essential, though, that the length of the rear extremity 29 is equal m all nut sockets, irrespective of the nut socket length, so as to fit the contact element 20 m the output shaft 17.
  • both the forward extremity 30 and a rear extremity 38 are movably supported relative to a sleeve element 39 which is secured in the sleeve insert 26 of the nut socket.
  • the rear extremity 38 is limited m its rearward extension by a shoulder 40 co-operating with an internal shoulder 42 m the sleeve element 39.
  • the contact element 20 of the output shaft 17 does not have to be movable.
  • a spring 43 acts between the inner ends of the two probe extremities 30,38 to accomplish an axial expansion of the probe unit 28.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

L'invention porte sur un système d'application de couple destiné à serrer une fixation filetée (12) présentant une surface d'extrémité arrière munie d'un dispositif intégré d'émission et de détection d'ondes acoustiques ultrasonores (21). Le système comprend une clé à chocs (10) dotée d'un arbre secondaire (17) équipé d'un dispositif de contact (20) en forme de broche servant à émettre et recevoir des signaux électriques, et un jeu de douilles d'écrou à transfert de couple (11a, 11b). Chaque douille présente une partie avant (22) qui se fixe à la tête de la fixation, une partie arrière (23) qui se fixe à l'arbre secondaire (17) de la clé à chocs (10), et une partie centrale (24, 26) séparant la partie avant et la partie arrière (22, 23) de la douille. Chaque douille d'écrou à transfert de couple (11a, 11b) comporte une sonde (28) présentant une extrémité arrière (29) qui s'étend à l'intérieur de la partie arrière de la douille d'écrou (11), et une extrémité avant (30) qui s'étend à l'intérieur de la partie avant (22) de la douille d'écrou (11a, 11b). Chaque extrémité avant (30) peut être déployée de manière télescopique par une force de rappel pour entrer en contact avec le dispositif d'émission et de détection d'ondes acoustiques (21) à la surface d'extrémité arrière de la tête de fixation, lorsqu'une douille quelconque du jeu de douilles d'écrou (11a, 11b) est utilisée pour assembler l'arbre secondaire (17) et la fixation (12a, 12b).
PCT/SE2000/000800 1999-04-28 2000-04-28 Systeme de serrage de fixations munies d'un dispositif d'emission et de detection d'ondes acoustiques ultrasonores WO2000064639A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9901519-0 1999-04-28
SE9901519A SE515534C2 (sv) 1999-04-28 1999-04-28 Momentappliceringssystem för åtdragning av fästelement och en uppsättning mutterhylsor

Publications (1)

Publication Number Publication Date
WO2000064639A1 true WO2000064639A1 (fr) 2000-11-02

Family

ID=20415376

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2000/000800 WO2000064639A1 (fr) 1999-04-28 2000-04-28 Systeme de serrage de fixations munies d'un dispositif d'emission et de detection d'ondes acoustiques ultrasonores

Country Status (2)

Country Link
SE (1) SE515534C2 (fr)
WO (1) WO2000064639A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001021358A1 (fr) * 1999-09-17 2001-03-29 Weber Schraubautomaten Gmbh Dispositif de vissage
WO2002004174A1 (fr) * 2000-07-06 2002-01-17 Telezygology Inc. Outil multifonctions
GB2383282A (en) * 2002-04-02 2003-06-25 Crane Electronics Torque Sensing Tool
EP1462220A1 (fr) * 2003-03-26 2004-09-29 Snecma Moteurs Clé à serrage contrôlé
US7217059B1 (en) 1998-03-18 2007-05-15 Telezygology Pty Limited Fixing and release systems
CN108375444A (zh) * 2016-11-25 2018-08-07 沈阳黎明航空发动机(集团)有限责任公司 一种自锁螺母锁紧力矩测量方法
US10052733B2 (en) 2015-06-05 2018-08-21 Ingersoll-Rand Company Lighting systems for power tools
US10418879B2 (en) 2015-06-05 2019-09-17 Ingersoll-Rand Company Power tool user interfaces
US10615670B2 (en) 2015-06-05 2020-04-07 Ingersoll-Rand Industrial U.S., Inc. Power tool user interfaces
US10668614B2 (en) 2015-06-05 2020-06-02 Ingersoll-Rand Industrial U.S., Inc. Impact tools with ring gear alignment features
US11260517B2 (en) 2015-06-05 2022-03-01 Ingersoll-Rand Industrial U.S., Inc. Power tool housings
US11491616B2 (en) 2015-06-05 2022-11-08 Ingersoll-Rand Industrial U.S., Inc. Power tools with user-selectable operational modes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589271A1 (fr) * 1992-09-19 1994-03-30 Robert Bosch Gmbh Procédé et dispositif pour le serrage d'un vis contrôlé par ultrason
WO1996009525A1 (fr) * 1994-09-23 1996-03-28 Crane Electronics Limited Douille servant a mesurer une charge de serrage
US5699703A (en) * 1995-03-03 1997-12-23 Robert Bosch Gmbh Screwing device for measuring arrangement
SE510355C2 (sv) * 1994-09-06 1999-05-17 Bosch Gmbh Robert Skruvningsanordning för ultraljudsstyrd åtdragning av skruvförbindning

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589271A1 (fr) * 1992-09-19 1994-03-30 Robert Bosch Gmbh Procédé et dispositif pour le serrage d'un vis contrôlé par ultrason
SE510355C2 (sv) * 1994-09-06 1999-05-17 Bosch Gmbh Robert Skruvningsanordning för ultraljudsstyrd åtdragning av skruvförbindning
WO1996009525A1 (fr) * 1994-09-23 1996-03-28 Crane Electronics Limited Douille servant a mesurer une charge de serrage
US5699703A (en) * 1995-03-03 1997-12-23 Robert Bosch Gmbh Screwing device for measuring arrangement

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7217059B1 (en) 1998-03-18 2007-05-15 Telezygology Pty Limited Fixing and release systems
WO2001021358A1 (fr) * 1999-09-17 2001-03-29 Weber Schraubautomaten Gmbh Dispositif de vissage
WO2002004174A1 (fr) * 2000-07-06 2002-01-17 Telezygology Inc. Outil multifonctions
GB2383282A (en) * 2002-04-02 2003-06-25 Crane Electronics Torque Sensing Tool
GB2383282B (en) * 2002-04-02 2004-06-16 Crane Electronics Torque sensing tool
EP1462220A1 (fr) * 2003-03-26 2004-09-29 Snecma Moteurs Clé à serrage contrôlé
FR2852879A1 (fr) * 2003-03-26 2004-10-01 Snecma Moteurs Cle a serrage controle
US7036407B2 (en) 2003-03-26 2006-05-02 Snecma Moteurs Wrench with controlled tightening
US10668614B2 (en) 2015-06-05 2020-06-02 Ingersoll-Rand Industrial U.S., Inc. Impact tools with ring gear alignment features
US10052733B2 (en) 2015-06-05 2018-08-21 Ingersoll-Rand Company Lighting systems for power tools
US10418879B2 (en) 2015-06-05 2019-09-17 Ingersoll-Rand Company Power tool user interfaces
US10615670B2 (en) 2015-06-05 2020-04-07 Ingersoll-Rand Industrial U.S., Inc. Power tool user interfaces
US11260517B2 (en) 2015-06-05 2022-03-01 Ingersoll-Rand Industrial U.S., Inc. Power tool housings
US11491616B2 (en) 2015-06-05 2022-11-08 Ingersoll-Rand Industrial U.S., Inc. Power tools with user-selectable operational modes
US11602832B2 (en) 2015-06-05 2023-03-14 Ingersoll-Rand Industrial U.S., Inc. Impact tools with ring gear alignment features
US11707831B2 (en) 2015-06-05 2023-07-25 Ingersoll-Rand Industrial U.S., Inc. Power tool housings
US11784538B2 (en) 2015-06-05 2023-10-10 Ingersoll-Rand Industrial U.S., Inc. Power tool user interfaces
CN108375444A (zh) * 2016-11-25 2018-08-07 沈阳黎明航空发动机(集团)有限责任公司 一种自锁螺母锁紧力矩测量方法

Also Published As

Publication number Publication date
SE9901519D0 (sv) 1999-04-28
SE515534C2 (sv) 2001-08-20
SE9901519L (sv) 2000-10-29

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