EP1008422B1 - Procédé et dispositif pour machines portatives pour éviter des accidents causés par un blocage d'outil - Google Patents

Procédé et dispositif pour machines portatives pour éviter des accidents causés par un blocage d'outil Download PDF

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Publication number
EP1008422B1
EP1008422B1 EP99811119A EP99811119A EP1008422B1 EP 1008422 B1 EP1008422 B1 EP 1008422B1 EP 99811119 A EP99811119 A EP 99811119A EP 99811119 A EP99811119 A EP 99811119A EP 1008422 B1 EP1008422 B1 EP 1008422B1
Authority
EP
European Patent Office
Prior art keywords
tool
acceleration
machine tool
acceleration sensors
cut
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.)
Expired - Lifetime
Application number
EP99811119A
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German (de)
English (en)
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EP1008422A2 (fr
EP1008422A3 (fr
Inventor
Roland Schaer
Martin Mayr
Peter Hellmann
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.)
Hilti AG
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Hilti AG
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Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP1008422A2 publication Critical patent/EP1008422A2/fr
Publication of EP1008422A3 publication Critical patent/EP1008422A3/fr
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Publication of EP1008422B1 publication Critical patent/EP1008422B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003—Crossed drill and motor spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/221—Sensors
    • 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/13—Cutting by use of rotating axially moving tool with randomly-actuated stopping means
    • Y10T408/14—Responsive to condition of Tool or tool-drive

Definitions

  • the invention relates to a method and a based on the application of the method based device for preventing accidents by blocking tools when working with hand-held machine tools with rotating tool, especially for rotary hammers, with a breaker device for interrupting the action of the drive motor to the tool in response to the equipped by a movement measuring device supplied rotary motion quantity detected operating state is equipped.
  • an acceleration threshold - triggers a clutch that interrupts the drive train between the drive motor and the actual tool unit, in particular the drill spindle.
  • Difficulties in the two known, approach similar solutions resulting from the fact that it comes with a desired operational use of the machine, such as when working with a hammer drill in a concrete mass inhomogeneous composition to false triggering the safety clutch.
  • This is related to the basic solution approach of an immediate signal evaluation without consequence estimation, that is, a signal evaluation with necessarily comparatively low safety threshold without individual evaluation of the respective accident.
  • a significant improvement has been achieved with a predictive evaluation method for the signals supplied by an acceleration sensor, as described in the patent DE 43 44 817 C2.
  • This improved The method is based on the idea of predictively calculating a rotation angle of the machine tool to be expected on the basis of the reaction torque during blocking or partial blocking of the tool while specifying a time constant from the rotational movement variable and then activating the safety coupling if the calculated expected twist angle is a predefinable one maximum permissible angle of rotation would exceed.
  • the future behavior of the machine is evaluated immediately after the occurrence of an accident and triggered a countermeasure when the machine tool has been subjected to an angular momentum, by which an accident can no longer be avoided.
  • the invention is therefore an object of the invention to improve hand-held machine tools of the type mentioned so that when blocking the tool by the reaction pulse or the reaction torque via the motion sensor triggered measurement signal also provides a clear statement about a dangerous case of blocking when the axis of rotation of the Tool is warped in case of failure, at the same time the influence of gravity acceleration on the measuring signal is to be turned off.
  • the invention is in a method for preventing tool blocking accidents when working with hand-held lathe tool-making machine tools, particularly in rotary hammers, equipped with interrupter means for interrupting the action of the drive motor on the tool as a function of the rotational movement quantity delivered by a movement measuring device characterized in that the movement of the machine tool is measured on at least two spaced apart from each other and against the axis of rotation during normal operation of the tool positions of the machine tool, and that the measured values obtained before further processing and evaluation be subtracted from each other.
  • a device for preventing rotational accidents due to tool blocking in a hand-held machine tool with rotating tool is characterized in that at least two acceleration sensors, preferably - especially for cost reasons - linear acceleration sensors as VerFsensoren within the housing of the machine tool to spatially from each other and are preferably mounted at different spaced locations relative to the tool axis and that the electronic evaluation unit includes a subtraction stage, in which the respective signals supplied by the acceleration sensors are subtracted from each other before the calculation of a particular signal for triggering the breaker device.
  • the method according to the invention and the safety device based thereon represent an improvement of the solution described in the cited DE document, wherein the signals respectively delivered by the plurality of acceleration sensors are subtracted from each other before the expected and predeterminable angle of rotation of the machine tool is calculated.
  • FIGS. 1A / B and 2 show in a schematic representation the essential components of a hand-held machine tool M of interest in connection with the invention, the operating state of which is monitored by means of two acceleration sensors 1a and 1b.
  • Fig. 1B is indicated by arrows, which acceleration 10 or deflection force in which deflection direction 11 act on the machine tool in the case of blocking the tool 8.
  • the signals of the acceleration sensors 1a, 1b reach an electronic evaluation unit 3, which may be a microprocessor, a microcomputer executed in discrete circuit technology, a signal processor or the like.
  • the digitized signals of the acceleration sensors 1a, 1b are first subtracted from each other, as explained and explained in more detail below. Subsequently, the result obtained in this way is evaluated by means of a model-based or rule-based algorithm which predicts the operating state of the handheld power tool M when the acceleration sensors 1a, 1b respond.
  • the invention can also be used advantageously for those applications in which no predictive calculation of the expected twist angle of the power tool M, ie in such safety devices that assess the acceleration signal generated due to tool blocking directly and when exceeding a certain level, optionally after Störsignalfilterung , as well as single and / or double integration, directly to trigger the drive-breaker device.
  • the service interruption device ie in particular a clutch 5 is actuated, which interrupts the drive train between a drive motor 7 and the tool holder or tool 8 and optionally additionally triggers a circuit breaker 6.
  • the method according to the invention and the measuring system based thereon act reliably for any arbitrary axis of rotation of the overall system as well as possibly tilted or distorted tool axis, as will be explained below with reference to FIG.
  • the movement measuring device has, as already mentioned, at least two acceleration sensors 1a, 1b whose measurement results according to the invention are subtracted before further processing. As can be seen from the following derivation for two possible applications, the disturbance magnitude of gravitational acceleration is eliminated for each possible application position of the power tool.
  • the second sensor 1b lies in a plane enclosing the axis of rotation 9 in normal operation.
  • the axis of rotation can take any position in an assumed two-dimensional sensor plane and always provides a corrected error signal, as can be seen from the subsequent mathematical derivation.
  • more than two sensors can be provided, in which case the reliability of the received signal is increased by averaging or a plausibility check. If two redundant sensor pairs are provided, the intervals for a security check can in principle be extended.
  • any measuring system with acceleration sensors or accelerometers ie those which are piezoelectrically, piezoresistively or inertially based and / or integrated as part of a microelectronic circuit, is suitable.
  • the electronic evaluation unit can either be realized analogously with the aid of operational amplifiers and corresponding filter circuits or digitally using a microprocessor with assigned processor interfaces (cf. DE 43 44 817 C2). It is equally possible to realize the evaluation as a fuzzy logic, which is described in detail in DE 196 41 618 A1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Drilling And Boring (AREA)
  • Portable Power Tools In General (AREA)
  • Manipulator (AREA)
  • Numerical Control (AREA)

Claims (7)

  1. Procédé pour éviter les accidents par blocage d'outil lors du travail avec une machine-outil à guidage manuel avec outil rotatif (8), en particulier avec des marteaux perforateurs, ladite machine-outil étant équipée d'un dispositif d'interruption (5, 6) pour interrompre l'action du moteur d'entraînement (7) sur l'outil (8) en fonction de l'état de fonctionnement détecté par un dispositif de mesure de déplacement (1), le déplacement de la machine-outil dans l'espace étant mesuré en au moins deux endroits de la machine-outil distants spatialement l'un de l'autre et de l'axe de l'outil, caractérisé en ce que les valeurs mesurées recueillies (a1, a2) sont soustraites l'une de l'autre avant le calcul d'un signal déclenchant le dispositif d'interruption (5, 6).
  2. Procédé selon la revendication 1, caractérisé en ce que le déplacement de la machine-outil dans l'espace est mesuré en des endroits présentant des distances différentes par rapport à l'axe de l'outil.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la grandeur de déplacement détectée est l'accélération de la machine-outil dans l'espace en au moins deux endroits distants spatialement l'un de l'autre.
  4. Procédé selon la revendication 3, caractérisé en ce que, après soustraction des valeurs mesurées par au moins deux capteurs d'accélération, un angle de rotation escompté (ϕ) de la machine-outil (M) est calculé par anticipation, avec une constante de temps imposée, à partir de la grandeur d'accélération angulaire fournie par la soustraction, et le dispositif d'interruption (5, 6) est activé dès que l'angle de rotation escompté calculé excède un angle de rotation maximal admis prédéfini.
  5. Dispositif pour éviter les accidents dus à un blocage d'outil dans une machine-outil à guidage manuel avec outil rotatif, en particulier dans des marteaux perforateurs, ladite machine-outil étant équipée d'un dispositif d'interruption (5, 6) pour interrompre l'action du moteur d'entraînement (7) sur l'outil (8) en fonction de l'état de fonctionnement détecté par un dispositif de mesure d'accélération (1), le dispositif de mesure d'accélération étant équipé d'au moins deux capteurs d'accélération (1a, 1b) implantés à l'intérieur du carter de la machine-outil en des endroits distants spatialement l'un de l'autre et de l'axe d'outil, caractérisé en ce que l'unité électronique d'analyse (3) traitant les signaux d'accélération (a1, a2) des capteurs d'accélération contient un étage de soustraction dans lequel les signaux fournis par chacun des capteurs d'accélération sont soustraits l'un de l'autre préalablement au calcul d'un signal de déclenchement du dispositif d'interruption (5, 6).
  6. Dispositif selon la revendication 5, caractérisé en ce que les capteurs d'accélération (1a, 1b) sont des capteurs d'accélération linéaire.
  7. Dispositif selon la revendication 5, caractérisé en ce qu'au moins un des capteurs d'accélération (1a, 1b) est disposé de façon à fournir un signal de sortie maximal dans la position de fonctionnement normal de la machine-outil.
EP99811119A 1998-12-10 1999-12-06 Procédé et dispositif pour machines portatives pour éviter des accidents causés par un blocage d'outil Expired - Lifetime EP1008422B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19857061 1998-12-10
DE19857061A DE19857061C2 (de) 1998-12-10 1998-12-10 Verfahren und Einrichtung zur Vermeidung von Unfällen bei handgeführten Werkzeugmaschinen durch Werkzeugblockieren

Publications (3)

Publication Number Publication Date
EP1008422A2 EP1008422A2 (fr) 2000-06-14
EP1008422A3 EP1008422A3 (fr) 2001-09-19
EP1008422B1 true EP1008422B1 (fr) 2007-02-14

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Application Number Title Priority Date Filing Date
EP99811119A Expired - Lifetime EP1008422B1 (fr) 1998-12-10 1999-12-06 Procédé et dispositif pour machines portatives pour éviter des accidents causés par un blocage d'outil

Country Status (5)

Country Link
US (1) US6111515A (fr)
EP (1) EP1008422B1 (fr)
JP (1) JP4486728B2 (fr)
CN (1) CN1160526C (fr)
DE (2) DE19857061C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8286723B2 (en) 2010-01-07 2012-10-16 Black & Decker Inc. Power screwdriver having rotary input control
US8418778B2 (en) 2010-01-07 2013-04-16 Black & Decker Inc. Power screwdriver having rotary input control
USRE44311E1 (en) 2004-10-20 2013-06-25 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19900882A1 (de) * 1999-01-12 2000-07-13 Bosch Gmbh Robert Handwerkzeugmaschine
DE10051775A1 (de) * 2000-10-19 2002-05-16 Hilti Ag Sicherheitsschaltung für drehendes Elektrohandwerkzeuggerät
DE10103142A1 (de) 2001-01-24 2002-07-25 Hilti Ag Drehendes Elektrohandwerkzeuggerät und Startsicherheitsroutine
SE520435C2 (sv) * 2001-03-30 2003-07-08 Scania Cv Ab Sätt och anordning för att bestämma cylindertryck vid en förbränningsmotor
DE10117121A1 (de) * 2001-04-06 2002-10-17 Bosch Gmbh Robert Handwerkzeugmaschine
CA2498035A1 (fr) * 2002-09-13 2004-03-25 Black & Decker Inc. Outil tournant
US7015409B2 (en) 2002-12-23 2006-03-21 Milwaukee Electric Tool Corporation Power tool trigger
DE10303006B4 (de) * 2003-01-27 2019-01-03 Hilti Aktiengesellschaft Handgeführtes Arbeitsgerät
DE10309012B3 (de) * 2003-03-01 2004-08-12 Hilti Ag Steuerverfahren einer axial schlagenden und drehenden Elektrohandwerkzeugmaschine
DE10309414B4 (de) * 2003-03-05 2009-01-08 Robert Bosch Gmbh Sensoreinrichtung und zugehöriges Verfahren für eine Handwerkzeugmaschine
DE10316844A1 (de) * 2003-04-11 2004-11-04 Hilti Ag Steuerung einer Elektrohandwerkzeugmaschine
US7395871B2 (en) * 2003-04-24 2008-07-08 Black & Decker Inc. Method for detecting a bit jam condition using a freely rotatable inertial mass
DE10318798B4 (de) * 2003-04-25 2006-01-26 Robert Bosch Gmbh Bohrgerät
DE10341974A1 (de) * 2003-09-11 2005-04-21 Bosch Gmbh Robert Abschaltschrauber
DE102004003202B4 (de) * 2004-01-22 2022-05-25 Robert Bosch Gmbh Handgriff mit Erfassungseinrichtung
US7410006B2 (en) * 2004-10-20 2008-08-12 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
US20060157262A1 (en) * 2005-01-14 2006-07-20 Jui-Yu Chen Power tool having presetable digital control of torque output
US7677844B2 (en) * 2005-04-19 2010-03-16 Black & Decker Inc. Electronic clutch for tool chuck with power take off and dead spindle features
US7650699B2 (en) * 2005-07-22 2010-01-26 Kazuhiro Yamamoto Electric drill
DK1971262T3 (da) * 2005-12-23 2013-05-27 Reactec Ltd Overvågningsapparat til overvågning af et håndholdt værktøj
US8316958B2 (en) * 2006-07-13 2012-11-27 Black & Decker Inc. Control scheme for detecting and preventing torque conditions in a power tool
US20080021590A1 (en) * 2006-07-21 2008-01-24 Vanko John C Adaptive control scheme for detecting and preventing torque conditions in a power tool
US20090065225A1 (en) * 2007-09-07 2009-03-12 Black & Decker Inc. Switchable anti-lock control
DE102008001774A1 (de) * 2008-05-14 2009-11-19 Robert Bosch Gmbh Verfahren zum Betrieb einer Werkzeugmaschine, insbesondere einer Handwerkzeugmaschine
FR2935496B1 (fr) * 2008-08-29 2014-05-16 Pellenc Sa Procede permettant l'arret des outils portatifs lors de mouvements brusques imprevus, et outils portatifs en faisant application
JP5537055B2 (ja) 2009-03-24 2014-07-02 株式会社マキタ 電動工具
JP5448568B2 (ja) * 2009-05-21 2014-03-19 株式会社やまびこ 安全装置付き作業機
JP5448569B2 (ja) * 2009-05-21 2014-03-19 株式会社やまびこ 安全装置付き刈払機
DE102009046789A1 (de) * 2009-11-17 2011-05-19 Robert Bosch Gmbh Handwerkzeugmaschinenvorrichtung
JP5412249B2 (ja) * 2009-11-19 2014-02-12 株式会社マキタ 手持ち工具
US9266178B2 (en) 2010-01-07 2016-02-23 Black & Decker Inc. Power tool having rotary input control
US9475180B2 (en) 2010-01-07 2016-10-25 Black & Decker Inc. Power tool having rotary input control
DE102010043032A1 (de) * 2010-10-28 2012-05-03 Hilti Aktiengesellschaft Steuerungsverfahren für eine Werkzeugmaschine und eine Werkzeugmaschine
EP2581168A1 (fr) * 2011-10-13 2013-04-17 Oy Kwh Mirka Ab Machine portable
US9352456B2 (en) 2011-10-26 2016-05-31 Black & Decker Inc. Power tool with force sensing electronic clutch
EP2631035B1 (fr) 2012-02-24 2019-10-16 Black & Decker Inc. Outil électrique
DE102012212377A1 (de) * 2012-04-26 2013-10-31 Robert Bosch Gmbh Elektrowerkzeug und Verfahren zu seinem Betrieb
DE102012208855A1 (de) * 2012-05-25 2013-11-28 Robert Bosch Gmbh Handwerkzeugmaschine
DE102012208913A1 (de) * 2012-05-25 2013-11-28 Robert Bosch Gmbh Schlagwerkeinheit
GB201212958D0 (en) * 2012-07-20 2012-09-05 Hosking Peter J Power tools
DE102014202585A1 (de) * 2013-04-29 2014-10-30 Robert Bosch Gmbh Handwerkzeugbedieneinheit
DE102013212626B4 (de) * 2013-06-28 2024-08-08 Robert Bosch Gmbh Handwerkzeugmaschinenvorrichtung
DE102014207434A1 (de) * 2014-04-17 2015-10-22 Robert Bosch Gmbh Verfahren zum Betreiben einer Handwerkzeugmaschine, Handwerkzeugmaschine
CN105082261A (zh) * 2014-05-13 2015-11-25 苏州宝时得电动工具有限公司 链锯及其控制方法
EP3023203A1 (fr) * 2014-11-20 2016-05-25 HILTI Aktiengesellschaft Procédé de commande pour une machine-outils manuelle
EP3023202A1 (fr) * 2014-11-20 2016-05-25 HILTI Aktiengesellschaft Procédé de sécurité et machine-outil manuelle
EP3023200A1 (fr) * 2014-11-20 2016-05-25 HILTI Aktiengesellschaft Procédé de commande d'une perceuse
DE102015205172A1 (de) * 2015-03-23 2016-09-29 Robert Bosch Gmbh Werkzeugmaschine, insbesondere Handwerkzeugmaschine, mit einer motorischen Antriebseinheit und mit zumindest einer Sensorvorrichtung
JP2017001115A (ja) 2015-06-05 2017-01-05 株式会社マキタ 作業工具
KR101799432B1 (ko) * 2015-09-22 2017-11-21 계양전기 주식회사 전동 공구
EP3199303A1 (fr) * 2016-01-29 2017-08-02 HILTI Aktiengesellschaft Machine-outil portative
US10589413B2 (en) 2016-06-20 2020-03-17 Black & Decker Inc. Power tool with anti-kickback control system
JP6757226B2 (ja) * 2016-10-07 2020-09-16 株式会社マキタ 電動工具
SE1651353A1 (en) 2016-10-17 2018-02-27 Husqvarna Ab Safety arrangement and method for a floor surfacing machine
US11529725B2 (en) 2017-10-20 2022-12-20 Milwaukee Electric Tool Corporation Power tool including electromagnetic clutch
WO2019084280A1 (fr) 2017-10-26 2019-05-02 Milwaukee Electric Tool Corporation Procédés de commande du recul pour outils électriques
EP3610990B1 (fr) 2018-08-14 2021-05-05 Hilti Aktiengesellschaft Procédé de commande pour une machine-outil portative, machine-outil portative et système doté d'une machine-outil portative et d'un support
US20220324092A1 (en) * 2019-09-20 2022-10-13 Hilti Aktiengesellschaft Method for operating a hand-guided machine tool, and hand-held machine tool
US11691262B2 (en) 2019-09-26 2023-07-04 Makita Corporation Electric power tool
JP7382190B2 (ja) * 2019-09-26 2023-11-16 株式会社マキタ 回転工具
EP3825066A1 (fr) * 2019-11-21 2021-05-26 Hilti Aktiengesellschaft Procédé de fonctionnement d'une machine-outil guidée à la main et machine-outil guidée à la main
US11641102B2 (en) 2020-03-10 2023-05-02 Smart Wires Inc. Modular FACTS devices with external fault current protection within the same impedance injection module
US11845173B2 (en) 2020-10-16 2023-12-19 Milwaukee Electric Tool Corporation Anti bind-up control for power tools

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063600A (en) * 1976-05-05 1977-12-20 Krzes Casey S Power tool safety mechanism
JPS6014487B2 (ja) * 1980-06-23 1985-04-13 株式会社明電舎 避雷器用素子の接着方法
DE3346215A1 (de) * 1983-12-21 1985-07-11 Hilti Ag, Schaan Handwerkzeug mit beweglich gelagerter traegheitsmasse
DE3707052A1 (de) * 1987-03-05 1988-09-15 Bosch Gmbh Robert Verfahren zum unterbrechen der antriebstaetigkeit, insbesondere drehantriebstaetigkeit, einer handwerkzeugmaschine
EP0303651B2 (fr) * 1987-03-05 1999-12-01 Robert Bosch Gmbh Procede d'interruption de l'entrainement, en particulier en percussion et/ou en rotation, d'un outil a main
US4866429A (en) * 1987-08-12 1989-09-12 Scientific Atlanta, Inc. Automated machine tool monitoring device
US5014793A (en) * 1989-04-10 1991-05-14 Measurement Specialties, Inc. Variable speed DC motor controller apparatus particularly adapted for control of portable-power tools
DE3941756A1 (de) * 1989-12-18 1991-06-20 Gildemeister Ag Verfahren zur ermittlung der anwesenheit, der abmessungen oder der richtigen lage und position eines werkstuecks auf einer werkzeugmaschine
DE4112012A1 (de) * 1991-04-12 1992-10-15 Bosch Gmbh Robert Handwerkzeugmaschine mit blockiersensor
US5235472A (en) * 1991-10-18 1993-08-10 Seagate Technology, Inc. Apparatus for sensing operating shock on a disk drive
DE4334933C2 (de) * 1993-10-13 1997-02-20 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum zwangsweisen Abschalten von handgeführten Arbeitsmitteln
DE4344817C2 (de) * 1993-12-28 1995-11-16 Hilti Ag Verfahren und Einrichtung für handgeführte Werkzeugmaschinen zur Vermeidung von Unfällen durch Werkzeugblockieren
DE19628945A1 (de) * 1995-11-02 1997-05-07 Bosch Gmbh Robert Verfahren zum Unterbrechen der Antriebstätigkeit einer Handwerkzeugmaschine, sowie nach diesem Verfahren arbeitende Handwerkzeugmaschine
EP0771619B2 (fr) * 1995-11-02 2004-11-10 Robert Bosch Gmbh Procédé d'interruption de l'entraínement d'un outil à main et outil à main correspondant
DE19641618A1 (de) * 1996-10-09 1998-04-30 Hilti Ag Einrichtung und Verfahren für handgeführte Werkzeugmaschinen zur Vermeidung von Unfällen durch Werkzeugblockieren
DE19646382A1 (de) * 1996-11-11 1998-05-14 Hilti Ag Handgerät
DE19646381A1 (de) * 1996-11-11 1998-05-14 Hilti Ag Handgerät

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE44311E1 (en) 2004-10-20 2013-06-25 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
USRE44993E1 (en) 2004-10-20 2014-07-08 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
USRE45112E1 (en) 2004-10-20 2014-09-09 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
US8286723B2 (en) 2010-01-07 2012-10-16 Black & Decker Inc. Power screwdriver having rotary input control
US8418778B2 (en) 2010-01-07 2013-04-16 Black & Decker Inc. Power screwdriver having rotary input control

Also Published As

Publication number Publication date
EP1008422A2 (fr) 2000-06-14
JP4486728B2 (ja) 2010-06-23
CN1256383A (zh) 2000-06-14
DE19857061A1 (de) 2000-06-15
EP1008422A3 (fr) 2001-09-19
US6111515A (en) 2000-08-29
JP2000263304A (ja) 2000-09-26
DE59914191D1 (de) 2007-03-29
CN1160526C (zh) 2004-08-04
DE19857061C2 (de) 2000-11-02

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