WO2009105008A1 - Boulonneuse électrique à engrenage de transmission de puissance et moyen de détection de rotation et procédé de détermination du statut - Google Patents

Boulonneuse électrique à engrenage de transmission de puissance et moyen de détection de rotation et procédé de détermination du statut Download PDF

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Publication number
WO2009105008A1
WO2009105008A1 PCT/SE2009/000095 SE2009000095W WO2009105008A1 WO 2009105008 A1 WO2009105008 A1 WO 2009105008A1 SE 2009000095 W SE2009000095 W SE 2009000095W WO 2009105008 A1 WO2009105008 A1 WO 2009105008A1
Authority
WO
WIPO (PCT)
Prior art keywords
output spindle
rotational movement
motor
power
rotation
Prior art date
Application number
PCT/SE2009/000095
Other languages
English (en)
Inventor
Karl Johan Lars Elsmark
Erik Vilhelm Persson
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
Priority to CN2009801041966A priority Critical patent/CN101939141B/zh
Priority to EP09712893.8A priority patent/EP2242620B1/fr
Priority to JP2010547588A priority patent/JP5771395B2/ja
Publication of WO2009105008A1 publication Critical patent/WO2009105008A1/fr

Links

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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • 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
    • B25B23/1405—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers for impact 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 power nutrunner with a rotation motor connected to an output spindle via a power transmitting gearing.
  • torque sensing means for indicating the torque delivered to a screw joint being tightened.
  • this torque sensing means is of a mechanical-electric type associated with the reduction gearing or in the case of an electrically powered tool incorporated in the electric motor drive to detect the motor current/torque.
  • the torque sensing means is associated with the output spindle and gives a fairly correct signal in relation to the actually delivered torque, because in these cases the torque signal is not disturbed by occurring deficiencies of the reduction gearing.
  • torque sensing means located at the output spindle in angle nutrunners might give a reliable torque signal but is disadvantageous as the torque sensing means requires some space and causes a bulky angle head.
  • Another source of torque sensing error is a certain elastic torsional deformation of the transmission parts and the output spindle which influences upon the rotation angle as well as the registration dynamics, service life and the installed torque.
  • One way of ensuring an acceptable output torque accuracy is to keep track on the status of the power transmitting gearing and to be able to decide when the gearing is mechanical worn down to such an extent that an overhaul or repair of the tool is necessary.
  • a worn down gearing results in impaired output performance of the tool, and the output torque of the nutrunner may no longer be what it was originally set to be, which means that screw joints tightened by the nutrunner may not be tightened to an acceptable pretension level.
  • a power nutrunner of the type having an electric motor powered and controlled by an electronic drive unit there are means provided for monitoring both the output torque and the angular movement parameters of the motor.
  • the main object for the invention is to provide a power nutrunner with a motor arranged to deliver torque to an output spindle via a gearing and comprising a means for indicating the rotational movement of the output spindle to thereby detect excessive mechanical wear or any other damages of the gearing resulting in unacceptable deviations of the output torque, and also to detect the amount of elastic yield of the power transmission, thereby, determining the angular lag of the output spindle in relation to the motor.
  • Fig. 1 shows the front section of a power nutrunner according to the invention.
  • Fig. 2 shows, on a larger scale, a longitudinal section through the output spindle of the nutrunner in Fig. 1 illustrating a rotation sensing means according to the invention.
  • Fig. 3 shows a graph illustrating the normal regular variation in the rotational movement of the angle gear output spindle.
  • Fig. 4 shows a graph illustrating the normal regular variation in the rotational movement of the angle gear output spindle with a gear teeth wear indication superimposed thereon.
  • the nutrunner front section shown in Fig. 1 comprises a housing 10 which is connectable to a non-illustrated rear section of the nutrunner including a rotation motor and power feed means connected to the motor.
  • This front section housing 10 comprises an angle head 11 with an output spindle 12 journalled in a forward ball bearing 13 and a rear needle bearing 14.
  • the output spindle 12 is formed with an output end 15 for carrying a nut sleeve for connection to a screw joint to be tightened.
  • the forward ball bearing 13 has one of its ball races formed directly on the output spindle 12, whereas the other ball race is formed on an end cover 17 threaded into the forward end of the angle head 11.
  • the output spindle 12 is connected to the motor via an angle gearing 18 and an intermediate shaft 19, wherein the angle gearing 18 includes a pinion gear 20 on the intermediate shaft 19 and a bevel gear 21 on the output spindle 12.
  • the intermediate shaft 19 is journalled in a rear adjustable ball bearing 22 and a forward needle bearing 23 and provided at its rear end with a coupling sleeve 24 for connection to the motor.
  • a rotation sensing means in the form of a Hall-element type sensor 26 secured in the angle head 11 and an activator 27 associated with the output spindle 12.
  • the activator 27 is preferably formed as a thin plastic strip 29 attached around the bevel gear 21 and magnetised in transverse equidistantly placed parallel bands. These magnetic bands are very narrow for a high resolution and arranged to accomplish a pulsing activation of the sensor 26.
  • the sensor 26 is connected to a non-illustrated electronic control and evaluation unit preferably located at the rear end of the nutrunner, and the sensor 26 will deliver electric pulses to that unit in response to the magnetic bands 29 pass it during rotation of the output spindle 12.
  • the output spindle 12 could as well be provided with a circumferential row of teeth to activate an inductive sensor located in the angle head.
  • Other types of rotation sensing means may also be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

La présente invention concerne une boulonneuse électrique dotée d'un boîtier (10, 11) avec un moteur de rotation, d'un engrenage de transmission de puissance (18) et d’un axe de sortie (12), un moyen de détection de rotation (26,27) étant associé à l’axe de sortie (12) et conçu pour envoyer des signaux d’impulsion générés de façon équidistante à une unité d’évaluation, afin de détecter toute irrégularité indésirable dans le mouvement de rotation de l’axe de sortie (12), due à des anomalies de l’engrenage (18).
PCT/SE2009/000095 2008-02-20 2009-02-19 Boulonneuse électrique à engrenage de transmission de puissance et moyen de détection de rotation et procédé de détermination du statut WO2009105008A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2009801041966A CN101939141B (zh) 2008-02-20 2009-02-19 具有动力传递齿轮系和旋转检测装置的动力螺帽扳手以及用于确定状态的方法
EP09712893.8A EP2242620B1 (fr) 2008-02-20 2009-02-19 Boulonneuse électrique à engrenage de transmission de puissance et moyen de détection de rotation et procédé de détermination du statut
JP2010547588A JP5771395B2 (ja) 2008-02-20 2009-02-19 動力伝達手段及び回転感知手段を備えた動力ナットランナー並びに状態を測定する方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0800385A SE532128C2 (sv) 2008-02-20 2008-02-20 Mutterdragare med en kraftöverförande växel och rotationsavkännande organ, samt metod för fastställande växelns status
SE0800385-7 2008-02-20

Publications (1)

Publication Number Publication Date
WO2009105008A1 true WO2009105008A1 (fr) 2009-08-27

Family

ID=40985757

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2009/000095 WO2009105008A1 (fr) 2008-02-20 2009-02-19 Boulonneuse électrique à engrenage de transmission de puissance et moyen de détection de rotation et procédé de détermination du statut

Country Status (5)

Country Link
EP (1) EP2242620B1 (fr)
JP (1) JP5771395B2 (fr)
CN (1) CN101939141B (fr)
SE (1) SE532128C2 (fr)
WO (1) WO2009105008A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10160106B2 (en) 2016-04-24 2018-12-25 Toyota Motor Engineering & Manufacturing North America, Inc. Programmable tool orientation based, assembly tightening control

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105848833B (zh) * 2013-12-27 2018-03-20 阿特拉斯·科普柯工业技术公司 动力工具
JP7080814B2 (ja) * 2015-12-11 2022-06-06 アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ アングル駆動装置付きパワーレンチ
SE539112C2 (en) * 2015-12-14 2017-04-11 Atlas Copco Ind Technique Ab Impulse wrench rotation detection
CN110730704A (zh) * 2017-06-12 2020-01-24 阿特拉斯·科普柯工业技术公司 带有角传动的动力扳手
CN111300325B (zh) * 2020-04-17 2021-09-14 湖南省东海五金工具制造有限公司 一种辅助式扳手

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844177A (en) * 1987-08-07 1989-07-04 The Aro Corporation Torque sensing, automatic shut-off and reset clutch for toggle controlled screwdrivers, nutsetters and the like
JPH05134769A (ja) * 1991-11-14 1993-06-01 Teijin Seiki Co Ltd トルク制御型アクチユエータ

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043222A (en) * 1973-05-14 1977-08-23 Thor Power Tool Company Housing construction for a power tool
DE19637934A1 (de) * 1996-09-17 1998-03-26 Psm Drucklufttechnik Vertrieb Winkelschrauber mit eingebautem Drehmomentgeber
DE20111326U1 (de) * 2001-07-07 2001-09-27 Wagner Paul Heinz Hydraulischer Kraftschrauber
JP4493920B2 (ja) * 2003-02-05 2010-06-30 株式会社マキタ 締付工具
JP4421193B2 (ja) * 2003-02-14 2010-02-24 株式会社マキタ 締付工具
JP2005118910A (ja) * 2003-10-14 2005-05-12 Matsushita Electric Works Ltd インパクト回転工具
JP4906236B2 (ja) * 2004-03-12 2012-03-28 株式会社マキタ 締付工具
JP2005351683A (ja) * 2004-06-09 2005-12-22 Makita Corp 締付工具とその管理装置とそれらのセット
JP3975299B2 (ja) * 2004-07-08 2007-09-12 前田金属工業株式会社 締付トルク測定ユニット及びトルク表示締付機
JP2007229853A (ja) * 2006-02-28 2007-09-13 Nitto Seiko Co Ltd ねじ締めドライバユニット

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844177A (en) * 1987-08-07 1989-07-04 The Aro Corporation Torque sensing, automatic shut-off and reset clutch for toggle controlled screwdrivers, nutsetters and the like
JPH05134769A (ja) * 1991-11-14 1993-06-01 Teijin Seiki Co Ltd トルク制御型アクチユエータ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2242620A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10160106B2 (en) 2016-04-24 2018-12-25 Toyota Motor Engineering & Manufacturing North America, Inc. Programmable tool orientation based, assembly tightening control

Also Published As

Publication number Publication date
JP5771395B2 (ja) 2015-08-26
JP2011512266A (ja) 2011-04-21
EP2242620A4 (fr) 2013-09-18
CN101939141B (zh) 2012-10-31
CN101939141A (zh) 2011-01-05
EP2242620B1 (fr) 2016-04-20
EP2242620A1 (fr) 2010-10-27
SE0800385L (sv) 2009-08-21
SE532128C2 (sv) 2009-10-27

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