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EP3389929B1 - System zur vorspannung einer verbindung mit einer anzahl von gewindeelementen - Google Patents

System zur vorspannung einer verbindung mit einer anzahl von gewindeelementen Download PDF

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Publication number
EP3389929B1
EP3389929B1 EP16809814.3A EP16809814A EP3389929B1 EP 3389929 B1 EP3389929 B1 EP 3389929B1 EP 16809814 A EP16809814 A EP 16809814A EP 3389929 B1 EP3389929 B1 EP 3389929B1
Authority
EP
European Patent Office
Prior art keywords
power
wrenches
tightening
control unit
wrench
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.)
Active
Application number
EP16809814.3A
Other languages
English (en)
French (fr)
Other versions
EP3389929A1 (de
Inventor
Hans Niklas ÖBERG
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.)
Atlas Copco Industrial Technique AB
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Atlas Copco Industrial Technique AB
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Publication date
Application filed by Atlas Copco Industrial Technique AB filed Critical Atlas Copco Industrial Technique AB
Publication of EP3389929A1 publication Critical patent/EP3389929A1/de
Application granted granted Critical
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Classifications

    • 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
    • B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers

Definitions

  • the invention relates to a system for pre-tensioning a joint comprising two or more threaded fasteners.
  • the invention concerns a system in which two or more power wrenches are arranged to simultaneously tighten two or more threaded fasteners in a synchronized way in order to obtain an evenly distributed clamping force in the joint.
  • the EP 2421679 B1 discloses a tightening assembly for tightening two fasteners.
  • the torque of the tightening assembly is provided by electric, pneumatic or hydraulic energy and can be adjusted via switches.
  • the US 4081037 discloses a control system for a multiple spindle machine for simultaneously tightening a plurality of threaded fasteners.
  • a further object of the invention is to provide an improved system for pre-tensioning a joint including two or more threaded fasteners by simultaneous and synchronous tightening of the threaded fasteners by two or more manually supported power wrenches communicating with at least one common operation control unit, wherein the system is adaptable to different applications by an increased flexibility.
  • a system for pre-tensioning a joint including two or more threaded fasteners by a synchronized tightening of the threaded fasteners comprises two or more torque delivering power wrenches.
  • Each one of the power wrenches is a manually supported impulse type power wrench.
  • each one of the power wrenches is battery powered and comprise a wireless communication module.
  • Each of the power wrenches comprises at least one operation control unit, which comprises a wireless communication module for communicating with the wireless communication modules of the power wrenches to receive operation data from each power wrench and to deliver data to each power wrenches controlling the tightening operation of at least one power wrench in response to the received operation data from the respective power wrenches.
  • At least one power wrench is controlled to perform a step-wise tightening operation synchronized with a step-wise tightening operation of the other power wrench or wrenches of the system.
  • a number of the power wrenches are arranged in two or more groups for pre-tensioning a multi-fastener joint, and the power wrenches in each group are controlled to perform a simultaneous tightening operation to match in a synchronized way the tightening operation of the power wrenches in another group or groups.
  • the at least one operation control unit comprises a separate operation control unit provided at or inside each one of the power wrenches, each one of said separate operation control units is arranged to wirelessly communicate with the separate operation control unit or units of the other power wrench or wrenches of the system.
  • At least one operation control unit comprises a single operation control unit communicating with and controlling all of the power wrenches in the system.
  • a control unit for controlling pre-tensioning a joint including two or more threaded fasteners by a synchronized tightening of the threaded fasteners by two or more torque delivering power wrenches.
  • the control unit is in communication with the power wrenches for control of the operation of at least one of the power wrenches.
  • the operation control unit comprises a wireless communication module for communicating with a wireless communication module of the power wrenches.
  • the control unit is adapted to receive operation data from each power wrench and to deliver data to each power wenches controlling the tightening operation of at least one power wrench in response to the received operation data from the respective power wrenches.
  • control unit is adapted to control the at least one power wrench to perform a step-wise tightening operation synchronized with a step-wise tightening operation of at least one other power wrench used in a synchronized tightening of the threaded fasteners.
  • control unit when a number of the power wrenches controlled by the unit are arranged in two or more groups for pre-tensioning a multi-fastener joint, the control unit is adapted to control the power wrenches in each group to perform a simultaneous tightening operation to match in a synchronized way the tightening operation of the power wrenches in another group or groups.
  • control unit is a stand-alone device.
  • control unit is a separate operation control unit provided at or inside a power wrench.
  • the control unit is arranged to wirelessly communicate with at least one other separate operation control unit.
  • a power wrench provided with a wireless communication module adapted to wirelessly transmit operation data from a synchronized tightening of the threaded fasteners performed by the power wrench and at least one other power wrench is provided.
  • the wireless communication module is adapted to wirelessly transmit said operation data to a common control unit for control of the synchronized tightening.
  • the wireless communication module is adapted to wirelessly transmit said operation data to the at least one other power wrench.
  • the power wrench comprises a control unit adapted to control a synchronized tightening performed by the power wrench in response to control data wirelessly received from said at least one other power wrench.
  • a system 1 for pre-tensioning a joint 13 including two or more threaded fasteners 11a - c by a synchronized tightening of the threaded fasteners is depicted.
  • the system illustrated in Fig. 1 comprises three manually supported and battery powered power wrenches 10 a-c which are to be applied on a number of threaded fasteners 11 a-c.
  • the threaded fasteners 11 a-c are parts of a joint 13 wherein two elements 14, 15 are to be put together by a clamping force obtained by the threaded fasteners 11 a-c.
  • the power wrenches 10 a-c are of the torque impulse delivering type which do not generate any reaction forces, which makes it possible for an operator to operate two wrenches at a time.
  • the power wrenches 10 a-c can also be of the torque delivering type.
  • Each one of the power wrenches 10 a-c carries not only a detachable battery casing but also a non-illustrated internal means for indicating actual operation data like output torque, angular displacement etc.
  • Each one of the power wrenches 10 a-c comprises a wireless communication module 16a - c for communication with a common operation control unit 18. Since it is well known per se to provide battery powered power wrenches with equipment for wireless communication with an operation control unit that feature is not described in further detail.
  • the control unit 18 comprises a control circuit programmed with operation data suitable for the actual tightening operation, and a comparing circuit by which the outgoing control data for each power wrench are adapted to the received actual operation data from the other power wrenches.
  • the control circuit and the comparing circuit can for example be implemented using a processor 20 connected to a memory 22 on which a computer program is stored that when executed by the processor causes the control circuit and comparing circuit to perform the above tasks.
  • the control unit 18 is in accordance with one embodiment further arranged to identify the actual status of each one of the wrenches during a tightening sequence to control the tightening operation of the other power wrench or wrenches in response thereto, and to complete the predetermined tightening sequence via a synchronized tightening of the threaded fasteners 11 a-c.
  • the control unit 18 is provided with a wireless communication module 24 adapted to wirelessly transmitting and receiving data to/from the respective power wrenches 10a - 10 c.
  • the wireless communication module can be operatively connected to the control circuit.
  • the operation control unit is formed by separate control units 18 located at or inside the power wrenches themselves, which means that operation data and identification of the present status of the other power wrenches are received and compared by each one of the separate control units 18 in a distributed manner. This arrangement will contribute to an even more flexible system.
  • the synchronized tightening of the threaded fasteners 11 a-c may very well be executed continuously or in steps as long as the tightening operation performed by each one of the power wrenches 10 a-c is kept up with the operation of the other power wrenches to accomplish an evenly distributed clamping force in the joint 13.
  • the wrenches could be arranged in groups, whereby a synchronized tightening could be performed by controlling a simultaneous tightening operation of the power wrenches of one group in relation to a simultaneous tightening of the power wrenches in another group or groups.
  • the synchronized tightening aims to obtain an evenly distributed clamping force in the joint.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Claims (11)

  1. System (1) zum Vorspannen einer Verbindung (13) einschließlich zwei oder mehr Befestigungselemente (11a-c) mit Gewinde durch ein synchronisiertes Anziehen der Befestigungselemente mit Gewinde, umfassend zwei oder mehr Drehmoment abgebende, manuell getragene, batteriebetriebene Kraftschrauber (10a-10c),
    dadurch gekennzeichnet,
    dass jeder der Kraftschrauber eine separate Ablaufsteuereinheit (18), die angeordnet ist, um mit der separaten Ablaufsteuereinheit oder den separaten Ablaufsteuereinheiten des anderen Kraftschraubers oder der anderen Kraftschrauber des Systems drahtlos zu kommunizieren, ein Drahtloskommunikationsmodul (16a-c) umfasst, und
    dass die separate Ablaufsteuereinheit (18) ein Drahtloskommunikationsmodul (24) zum Kommunizieren mit den Drahtloskommunikationsmodulen (16a-c) der Kraftschrauber umfasst, um Ablaufdaten von jedem Kraftschrauber zu empfangen und um Daten, die den Anziehablauf mindestens eines Kraftschraubers steuern, als Reaktion auf die empfangenen Ablaufdaten von den jeweiligen Kraftschraubern an jeden Kraftschrauber abzugeben, wobei die separate Ablaufsteuereinheit (18) ferner eine Steuerschaltung, die mit Ablaufdaten programmiert ist, die für den tatsächlichen Anziehablauf geeignet sind, und eine Vergleichsschaltung umfasst, durch die die ausgehenden Steuerdaten für jeden Kraftschrauber an die empfangenen tatsächlichen Ablaufdaten von den anderen Kraftschraubern angepasst werden, um die zuvor bestimmte Anziehsequenz über ein synchronisiertes Anziehen der Befestigungselemente (11a-c) mit Gewinde abzuschließen.
  2. System nach Anspruch 1, wobei die zwei oder mehr Drehmoment abgebenden, manuell getragenen, batteriebetriebenen Kraftschrauber gesteuert werden, um einen schrittweisen Anziehablauf synchronisiert mit einem schrittweisen Anziehablauf des anderen Kraftschraubers oder der anderen Kraftschrauber des Systems durchzuführen.
  3. System nach Anspruch 1 oder 2, wobei eine Anzahl der Kraftschrauber in zwei oder mehr Gruppen zum Vorspannen einer Mehrbefestigungsverbindung angeordnet ist und die Kraftschrauber in jeder Gruppe gesteuert werden, um einen gleichzeitigen Anziehablauf durchzuführen, um in einer synchronisierten Weise dem Anziehablauf der Kraftschrauber in einer anderen Gruppe oder in anderen Gruppen zu entsprechen.
  4. System nach einem der Ansprüche 1 bis 3, wobei jeder der Kraftschrauber ein manuell getragener Kraftschrauber einer Impulsart ist.
  5. Steuereinheit (18) zum Steuern des Vorspannens einer Verbindung (13) einschließlich zwei oder mehr Befestigungselemente (11a-c) mit Gewinde durch ein synchronisiertes Anziehen der Befestigungselemente mit Gewinde unter Verwendung von zwei oder mehr Drehmoment abgebenden, manuell gestützten, batteriebetriebenen Kraftschraubern (10a-10c), wobei die Steuereinheit konfiguriert ist, um in jedem der Kraftschrauber zum Kommunizieren mit anderen Leistungsumsätzen für eine Steuerung des Ablaufs mindestens eines der Kraftschrauber angeordnet zu sein,
    dadurch gekennzeichnet,
    dass die Steuereinheit (18) ein Drahtloskommunikationsmodul (24) zum Kommunizieren mit einem Drahtloskommunikationsmodul der Kraftschrauber umfasst und angepasst ist, um Ablaufdaten von jedem Kraftschrauber zu empfangen und um Daten, die den Anziehablauf mindestens eines Kraftschraubers steuern, als Reaktion auf die empfangenen Ablaufdaten von den jeweiligen Kraftschraubern an jeden Kraftschrauber abzugeben, wobei die Steuereinheit (18) ferner eine Steuerschaltung, die mit Ablaufdaten programmiert ist, die für den tatsächlichen Anziehablauf geeignet sind, und eine Vergleichsschaltung umfasst, durch die die ausgehenden Steuerdaten für jeden Kraftschrauber an die empfangenen tatsächlichen Ablaufdaten von den anderen Kraftschraubern angepasst werden, um die zuvor bestimmte Anziehsequenz über ein synchronisiertes Anziehen der drei Befestigungselemente (11a-c) mit Gewinde abzuschließen.
  6. Steuereinheit (18) nach Anspruch 5, wobei die Steuereinheit angepasst ist, um den Kraftschrauber zu steuern, um einen schrittweisen Anziehablauf durchzuführen, der mit einem schrittweisen Anziehablauf mindestens eines anderen Kraftschraubers synchronisiert ist, der bei einem synchronisierten Anziehen der Befestigungselemente mit Gewinde verwendet wird.
  7. Steuereinheit (18) nach Anspruch 5 oder 6, wobei eine Anzahl der Kraftschrauber, die durch die Steuereinheiten (18) gesteuert werden, in zwei oder mehr Gruppen zum Vorspannen einer Mehrbefestigungsverbindung angeordnet ist, und wobei die Steuereinheiten angepasst sind, um die Kraftschrauber in jeder Gruppe zu steuern, um einen gleichzeitigen Anziehablauf durchzuführen, um in einer synchronisierten Weise dem Anziehablauf der Kraftschrauber in einer anderen Gruppe oder in anderen Gruppen zu entsprechen.
  8. Kraftschrauber (10a-c), umfassend eine Steuereinheit nach einem der Ansprüche 5 bis 7, wobei die Steuereinheit angeordnet ist, um mit mindestens einer anderen Steuereinheit mindestens eines anderen Kraftschraubers drahtlos zu kommunizieren.
  9. Kraftschrauber (10a-c) nach Anspruch 8, gekennzeichnet durch ein Drahtloskommunikationsmodul, das angepasst ist, um Ablaufdaten von einem synchronisierten Anziehen der Befestigungselemente mit Gewinde, das durch den Kraftschrauber und mindestens einen anderen Kraftschrauber durchgeführt wird, drahtlos zu übertragen.
  10. Kraftschrauber (10a-c) nach Anspruch 9, wobei das Drahtloskommunikationsmodul angepasst ist, um die Ablaufdaten an den mindestens einen anderen Kraftschrauber drahtlos zu übertragen.
  11. Kraftschrauber (10a-c) nach einem der Ansprüche 8 bis 10, wobei jeder der Kraftschrauber ein manuell getragener Kraftschrauber der Impulsart ist.
EP16809814.3A 2015-12-16 2016-12-13 System zur vorspannung einer verbindung mit einer anzahl von gewindeelementen Active EP3389929B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1551660 2015-12-16
PCT/EP2016/080804 WO2017102731A1 (en) 2015-12-16 2016-12-13 A system for pre-tensioning a joint comprising a number of threaded elements

Publications (2)

Publication Number Publication Date
EP3389929A1 EP3389929A1 (de) 2018-10-24
EP3389929B1 true EP3389929B1 (de) 2022-11-02

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Application Number Title Priority Date Filing Date
EP16809814.3A Active EP3389929B1 (de) 2015-12-16 2016-12-13 System zur vorspannung einer verbindung mit einer anzahl von gewindeelementen

Country Status (4)

Country Link
EP (1) EP3389929B1 (de)
KR (1) KR102573443B1 (de)
CN (1) CN108367417B (de)
WO (1) WO2017102731A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12017311B2 (en) * 2016-03-02 2024-06-25 HYTORC Division Unex Corporation Apparatus for tightening threaded fasteners
KR20220081011A (ko) * 2020-12-08 2022-06-15 (주)볼팅마스타 토크렌치 제어시스템
CN115723086A (zh) * 2021-08-30 2023-03-03 天泽电力(天津)有限公司 扳手装置及扳手装置的控制方法

Citations (6)

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Publication number Priority date Publication date Assignee Title
US3965778A (en) * 1974-09-19 1976-06-29 Standard Pressed Steel Co. Multi-stage tightening system
US4081037A (en) * 1976-02-02 1978-03-28 Thor Power Tool Company Control system for a multiple spindle machine
EP1902817A2 (de) * 2006-09-22 2008-03-26 Cooper Power Tools Gmbh & Co. Ohg Kabelloses Elektrowerkzeug und Fertigungssystem
EP2421679A2 (de) * 2009-04-22 2012-02-29 Hytorc Div. Unex Corporation Vorrichtung zum anziehen oder lockern von befestigungsvorrichtungen
US20130047408A1 (en) * 2010-05-03 2013-02-28 Innovation Plus, Llc System for performing predefined fastener installtion procedures
WO2013063507A1 (en) * 2011-10-26 2013-05-02 Milwaukee Electric Tool Corporation Wireless tracking of power tools and related devices

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KR930006997B1 (ko) * 1990-08-03 1993-07-26 하재의 익스팬션 러버 조인트
DE20007904U1 (de) * 2000-05-03 2001-09-06 Cooper Power Tools GmbH & Co., 73463 Westhausen Schraubsystem
ATE528481T1 (de) * 2002-06-27 2011-10-15 Snap On Tools Corp Werkzeugvorrichtung, system und verwendungsverfahren
US20050223856A1 (en) * 2004-04-07 2005-10-13 John Reynertson Torque wrench with fastener indicator and system and method employing same
JP5431006B2 (ja) * 2009-04-16 2014-03-05 Ｔｏｎｅ株式会社 ワイヤレス・データ送受信システム
DE202011004847U1 (de) * 2011-04-05 2011-06-09 Apex Brands, Inc. (n.d.Ges.d. Staates Delaware), N.C. Schraubersystem
JP6322387B2 (ja) * 2013-11-05 2018-05-09 Ｔｏｎｅ株式会社 締付装置及び締付方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965778A (en) * 1974-09-19 1976-06-29 Standard Pressed Steel Co. Multi-stage tightening system
US4081037A (en) * 1976-02-02 1978-03-28 Thor Power Tool Company Control system for a multiple spindle machine
EP1902817A2 (de) * 2006-09-22 2008-03-26 Cooper Power Tools Gmbh & Co. Ohg Kabelloses Elektrowerkzeug und Fertigungssystem
EP2421679A2 (de) * 2009-04-22 2012-02-29 Hytorc Div. Unex Corporation Vorrichtung zum anziehen oder lockern von befestigungsvorrichtungen
US20130047408A1 (en) * 2010-05-03 2013-02-28 Innovation Plus, Llc System for performing predefined fastener installtion procedures
WO2013063507A1 (en) * 2011-10-26 2013-05-02 Milwaukee Electric Tool Corporation Wireless tracking of power tools and related devices

Also Published As

Publication number Publication date
WO2017102731A1 (en) 2017-06-22
CN108367417B (zh) 2020-09-22
EP3389929A1 (de) 2018-10-24
KR20180094929A (ko) 2018-08-24
CN108367417A (zh) 2018-08-03
KR102573443B1 (ko) 2023-09-01

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