EP1282484B1 - Werkzeugmaschine, insbesondere handwerkzeugmaschine - Google Patents

Werkzeugmaschine, insbesondere handwerkzeugmaschine Download PDF

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Publication number
EP1282484B1
EP1282484B1 EP01921202A EP01921202A EP1282484B1 EP 1282484 B1 EP1282484 B1 EP 1282484B1 EP 01921202 A EP01921202 A EP 01921202A EP 01921202 A EP01921202 A EP 01921202A EP 1282484 B1 EP1282484 B1 EP 1282484B1
Authority
EP
European Patent Office
Prior art keywords
machine tool
regulating device
tool according
unit
resetting
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
EP01921202A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1282484A1 (de
Inventor
Thomas Leitenberger
Gerhard Meixner
Guenther Schlachter
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1282484A1 publication Critical patent/EP1282484A1/de
Application granted granted Critical
Publication of EP1282484B1 publication Critical patent/EP1282484B1/de
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
    • 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
    • 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
    • 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
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools

Definitions

  • the invention relates to a machine tool, in particular a hand tool, according to the preamble of claim 1.
  • thumbwheel To adjust an operator is often offered a thumbwheel over which the speed can be set permanently or limited to a maximum value.
  • the thumbwheel can also be combined with a potentiometer in the switch trigger, so that the thumbwheel sets the upper limit of the pusher area.
  • the speed can be adjusted to a machining operation or to a material to be processed.
  • An operator may preselect a speed that can be kept constant while working on a workpiece, such as sawing, grinding, etc.
  • From the DE 39 16 355 A1 is a power tool with a motor and a motor control known.
  • the control takes place as a function of parameters which are input by a user via an adjusting device.
  • the controller automatically controls by means of a reset unit a provision in a starting position.
  • the invention is based on a machine tool, in particular a handheld power tool, with a housing arranged in a drive motor and at least one adjusting device via which at least one parameter of the drive motor and / or a transmission during an operating phase is permanently adjustable, wherein the adjusting device has a reset unit which resets the adjusting device to an initial position as a function of at least one operating parameter, and the reset unit resets the actuating device as a function of a standstill time.
  • the adjusting device has a reset unit, which resets the adjusting device depending on at least one operating parameter to an initial position, incorrect operation can be safely avoided especially when the machine tool is used by several people.
  • the machine tool can be advantageously always reset by the reset unit to a standard operating case, from which each operator can set the machine tool in the usual way to his specific application. It can be safely avoided that an unsuitable for a particular application special setting is overlooked by a new operator.
  • the machine tool in the initial position, can be operated with a maximum possible characteristic, which is then reduced by the actuator, that in the initial position, the machine tool with a minimum set Characteristic can be operated from the security reasons, a setting should always be started, or that in the initial position, the machine tool can be operated with a characteristic that is between a maximum and a minimum characteristic.
  • the reset unit resets the adjusting device depending on a downtime. It can be achieved structurally simple, a functionally correct provision.
  • the machine tool can furthermore be set to various fields of application and unintentional restoring can be reliably avoided, the downtime preferably being between one and twenty minutes.
  • a speed of the tool is often decisive for advantageous processing, whereby a maximum speed is preferably adjustable via the adjusting device as a parameter, directly via the drive machine and / or possibly also via a transmission.
  • a maximum speed is preferably adjustable via the adjusting device as a parameter, directly via the drive machine and / or possibly also via a transmission.
  • it may in principle also be useful to determine a minimum speed via the adjusting device, which should not be undershot, for example, in an application.
  • adjusting device In addition to a number of revolutions, it is also possible to use other parameters that appear appropriate to the person skilled in the art via the adjusting device be executed adjustable, in particular a minimum and / or maximum delivered torque and / or a machining stroke, for example, in a jigsaw or an eccentric grinder, etc.
  • the reset unit when interrupting a power supply, resets the adjusting device, for example, when pulling a power plug or when replacing a battery. Since before a change of operator, in particular a power plug of a power tool frequently unplugged or the power supply is interrupted, the operator change can be detected with a very high probability.
  • the reset unit resets the adjusting device, for example as a function of temperature values.
  • the adjusting device can be reset as soon as the machine tool has cooled down, for example by a bimetal element releasing a latching connection, and / or the adjusting device can be reset when a certain temperature is exceeded, for example in the event of an overload.
  • a mechanical reset mechanism can be realized, in particular with a tensioned spring element, which is held for example via a latching mechanism during operation in its position, which is coupled to an on-off switch and is released when you turn off the machine tool.
  • the reset operation can advantageously be easily coupled to a power supply, for example by a solenoid acting directly or via a latching mechanism preventing a return spring from returning the control device in the presence of a power supply.
  • a solenoid acting directly or via a latching mechanism preventing a return spring from returning the control device in the presence of a power supply.
  • the return spring returns the adjusting device.
  • the electromagnetic actuating element can also be combined with other mechanisms that appear appropriate to a person skilled in the art, for example with electric and / or hydraulic actuators.
  • the adjusting device for setting the characteristic has at least one electronic unit which can be reset via the reset unit.
  • the reset operation can advantageously be coupled to a power supply, as in the case of an electromagnetic unit.
  • the electronics unit can be particularly space-saving, easy and inexpensive to be realized.
  • a mechanical return of an actuating element can be advantageously avoided, for example a setting wheel.
  • the solution according to the invention can be used in various machine tools that appear appropriate to the person skilled in the art and which are frequently used by several operators, such as hand drills, percussion drills, rotary and / or chisel hammers, screwdrivers, angle grinders, eccentric grinding machines, saws, planers etc.
  • Fig. 1 shows a hand drill with an arranged in a housing 10 electric motor 12. With a switch 28, the hand drill can be turned on and off. To set a speed, the hand drill has an adjusting device 14 with a thumbwheel 30, via which a speed can be set to a certain value.
  • the switch can also be equipped with a potentiometer be that allows, for example, the speed from 0 to a pre-selected by the final value to vary.
  • the adjusting device 14 has a reset unit 18, which resets the adjusting device 14 depending on an operating parameter to an initial position, namely as soon as a power supply is interrupted ( Fig. 2 ).
  • the thumbwheel 30 is rotatably mounted in a housing part 34 with an axis 32, via which a not-shown potentiometer is rotatable.
  • the axis 32 is axially secured in the housing part 34 in the direction of thumbwheel 30 via a gear 32 fixed to the axis 32 and axially in the direction of gear 36 via a flange 38 on the thumbwheel 30.
  • a coil spring 22 is arranged, which positively engages with a first leg 42 in the direction of rotation between two attached to the setting wheel 30 pins 44, 46 and with a second leg 48 positively engages between two fixed to the housing part 34 pins 50, 52.
  • a solenoid 24 is energized and moves a plunger 54 in a tooth gap of the gear 36. If the thumbwheel 30 is rotated to a maximum through the shift lever 28 adjustable speed To limit a certain value, the plunger 54 can be moved from its detent position in the gear 36 and from the tooth gap against the magnetic force of the electromagnet 24. If a tooth gap of the toothed wheel 36 comes to lie above the plunger 54, the plunger 54 is displaced into the tooth gap by the magnetic force of the electromagnet 24. The thumbwheel 30 can in through the tooth gaps the gear 36 predetermined levels are adjusted.
  • the setting wheel 30 and the potentiometer via the axis 32, the gear 36 and fixed in the tooth gap of the gear 36 tappet 54 of the electromagnet 24 is fixed.
  • the coil spring 22 is tensioned.
  • the plunger 54 can be displaced via the spiral spring 22 out of the tooth gap of the toothed wheel 36.
  • the coil spring 22 returns the thumbwheel 30 and the potentiometer in their initial position, namely the speed limit is canceled so that the hand drill can be operated at a maximum possible speed via the shift lever 28.
  • the electromagnet 24 with the plunger 54 and the gear 36 are advantageously used to control the adjustment range of the setting wheel 30, the setting wheel 30 to lock during an operating phase and to realize an advantageous return mechanism.
  • the control wheel 56 is connected via a pulse generator 58 to an electronic control unit 26, which has a setpoint Speed controller 60 specifies. Instead of a pulse generator, however, an infinite potentiometer is possible. If the hand drill is connected via a power supply 62 with a power plug and a power cord to a power supply, the control unit 26 is energized via a line 64, regardless of the operation of the switch 28. The speed of the electric motor 12 can then be adjusted by the setting wheel 56 to a specific value. The set speed is displayed via a display 66. If a setting limit is reached in a direction of rotation of the setting wheel 56, the adjusting wheel 56 can be further rotated without the speed setting changing.
  • a reset unit 20 in the control unit 26 returns it to its initial position, namely the preselected speed is canceled, so that the hand drill can be operated at a maximum possible speed.
  • the idle time at which the control unit 26 is reset via the reset unit 20 can be adjusted via an adjusting wheel 40 to an amount between two and twenty minutes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Drilling And Boring (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
EP01921202A 2000-05-11 2001-03-15 Werkzeugmaschine, insbesondere handwerkzeugmaschine Expired - Lifetime EP1282484B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10023174 2000-05-11
DE10023174A DE10023174A1 (de) 2000-05-11 2000-05-11 Werkzeugmaschine, insbesondere Handwerkzeugmaschine
PCT/DE2001/000988 WO2001085399A1 (de) 2000-05-11 2001-03-15 Werkzeugmaschine, insbesondere handwerkzeugmaschine

Publications (2)

Publication Number Publication Date
EP1282484A1 EP1282484A1 (de) 2003-02-12
EP1282484B1 true EP1282484B1 (de) 2008-07-02

Family

ID=7641712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01921202A Expired - Lifetime EP1282484B1 (de) 2000-05-11 2001-03-15 Werkzeugmaschine, insbesondere handwerkzeugmaschine

Country Status (7)

Country Link
US (1) US6983809B2 (ja)
EP (1) EP1282484B1 (ja)
JP (1) JP5009470B2 (ja)
CN (1) CN1256217C (ja)
BR (1) BR0110711A (ja)
DE (2) DE10023174A1 (ja)
WO (1) WO2001085399A1 (ja)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3623444B1 (en) 2003-06-02 2021-05-26 UDC Ireland Limited Organic electroluminescent devices and metal complex compounds
DE102004003191A1 (de) 2004-01-22 2005-08-11 Robert Bosch Gmbh Elektrohandwerkzeug mit Speichermöglichkeit
JP4906236B2 (ja) * 2004-03-12 2012-03-28 株式会社マキタ 締付工具
DE102004017946A1 (de) * 2004-04-14 2005-11-03 Robert Bosch Gmbh Akkumulatorbetriebene Handwerkzeugmaschine
DE102008038811B4 (de) 2007-07-31 2023-09-21 Marquardt Gmbh Elektrischer Schalter
US20090065225A1 (en) * 2007-09-07 2009-03-12 Black & Decker Inc. Switchable anti-lock control
DE102008009233A1 (de) * 2008-02-04 2009-08-06 REMS-WERK Christian Föll und Söhne GmbH & Co KG Antriebsgerät für Werkzeuge, vorzugsweise für Kernbohrkronen
GB2457173A (en) * 2008-02-11 2009-08-12 Milwaukee Electric Tool Corp A Power Tool
CN102056697B (zh) * 2008-06-10 2013-05-29 株式会社牧田 圆锯
DE102008002594A1 (de) * 2008-06-24 2009-12-31 Robert Bosch Gmbh Verfahren zum Betrieb einer Werkzeugmaschine mit Kupplungsvorrichtung
JP4793426B2 (ja) 2008-11-10 2011-10-12 パナソニック電工株式会社 充電式電動工具
DE102009012181A1 (de) * 2009-02-27 2010-09-02 Andreas Stihl Ag & Co. Kg Akkubetriebenes, handgeführtes Arbeitsgerät mit einem Gashebel
JP5374331B2 (ja) * 2009-11-25 2013-12-25 パナソニック株式会社 回転工具
DE102010001030B4 (de) * 2010-01-19 2023-07-06 Robert Bosch Gmbh Akku-Handwerkzeugmaschine und Verfahren zum Betreiben einer Akku-Handwerkzeugmaschine
JP5468925B2 (ja) * 2010-01-29 2014-04-09 Ｄｍｇ森精機株式会社 工作機械の移設検知時におけるパラメータ設定装置およびその方法
DE102010029267A1 (de) * 2010-05-25 2011-12-01 Robert Bosch Gmbh Elektrowerkzeug, insbesondere Bohrschrauber
DE102011010224A1 (de) * 2011-02-03 2012-08-09 Festool Gmbh Hand-Werkzeugmaschine mit einem temperaturabhängigen Sensor
DE102011105306A1 (de) * 2011-06-22 2012-12-27 Robert Bosch Gmbh Tragbares Werkzeug mit drahtloser Messwertübertragung
DE102011109133B4 (de) * 2011-08-02 2020-10-22 Robert Bosch Gmbh Transportables Schraubwerkzeug mit integriertem Schaltelement
DE102012218300A1 (de) * 2012-10-08 2014-04-10 Hilti Aktiengesellschaft Verfahren und Vorrichtung zum Betreiben einer Handwerkzeugmaschine mit einem Tangentialschlagwerk
US20140166324A1 (en) * 2012-12-13 2014-06-19 Black & Decker Inc. Power Tool User Interface
WO2014161257A1 (en) 2013-04-04 2014-10-09 Milwaukee Electric Tool Corporation Power tool
EP2985119B1 (en) * 2014-07-18 2020-06-03 Black & Decker, Inc. A chop saw
JP6577830B2 (ja) * 2015-10-28 2019-09-18 株式会社マキタ 電動工具
DE102015226084A1 (de) * 2015-12-18 2017-06-22 Robert Bosch Gmbh Handwerkzeugmaschine mit einer Kommunikationsschnittstelle
JP6342974B2 (ja) * 2016-11-24 2018-06-13 ファナック株式会社 手動パルス発生装置
CN109746877A (zh) * 2019-03-27 2019-05-14 常州格力博有限公司 手持式电动工具

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Also Published As

Publication number Publication date
US20040159449A1 (en) 2004-08-19
JP5009470B2 (ja) 2012-08-22
US6983809B2 (en) 2006-01-10
JP2004507368A (ja) 2004-03-11
DE50114072D1 (de) 2008-08-14
EP1282484A1 (de) 2003-02-12
BR0110711A (pt) 2003-02-11
DE10023174A1 (de) 2001-11-22
WO2001085399A1 (de) 2001-11-15
CN1256217C (zh) 2006-05-17
CN1427756A (zh) 2003-07-02

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