WO2013149827A2 - Carter de machine-outil portative - Google Patents
Carter de machine-outil portative Download PDFInfo
- Publication number
- WO2013149827A2 WO2013149827A2 PCT/EP2013/055714 EP2013055714W WO2013149827A2 WO 2013149827 A2 WO2013149827 A2 WO 2013149827A2 EP 2013055714 W EP2013055714 W EP 2013055714W WO 2013149827 A2 WO2013149827 A2 WO 2013149827A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tool
- housing
- drive motor
- torque
- tool spindle
- Prior art date
Links
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
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
Definitions
- the invention is based on a hand-held power tool device with a drive motor, a tool spindle, a hand-held power tool housing, a monitoring unit which is intended to be an unauthorized one
- Detecting housing movement state and with a motor control, which is connected to the monitoring unit and which is intended to at least reduce a power output of the drive motor in the invalid housing movement state.
- the handheld power tool device has a torque lock, which is intended to be inadmissible
- a "drive motor” is to be understood in particular as meaning a motor which, in at least one operating state, rotationally drives the tool spindle, in particular via a gear of the handheld power tool device Drive motor transmits torque transmitted to the tool spindle in particular directly to a tool holder of the power tool device.
- the tool spindle preferably rotatably fixes the tool holder relative to the hand tool machine housing.
- a "hand-held power tool housing” should be understood to mean, in particular, a housing which non-rotatably connects at least one stator of the drive motor and a handgrip of the hand-held power tool device.
- a “monitoring unit” is to be understood as a unit which is intended to move one from the handle to an operator transmitted force to monitor an acceleration of the handle and / or movement of the handle.
- a monitoring unit is described for example in DE 196 41 618 A1.
- the monitoring unit could detect a current flowing through the drive motor and / or a power received by the drive motor for detecting the impermissible housing movement state.
- provided is meant in particular specially programmed, designed and / or equipped understood
- Housing movement state is to be understood in particular an operating state in which the hand tool housing has a rotational movement about a rotation axis of the tool spindle, in which a safe grip of an operator on the hand tool housing is unlikely
- the impermissible housing movement state is caused by an uncontrolled lock case
- Operating state are understood in which a rotationally driven during a work insert tool, such as a drill hooked in a workpiece, wherein a momentarily applied by the operator holding force is too low, by a rotational acceleration and / or rotational movement of the hand tool machine housing by more as an uncritical value.
- a rotational energy of a Powertrain of the power tool device converted into a rotational energy of the power tool housing and fixed to the power tool housing associated elements of the power tool device.
- a "motor control” should in particular be understood to mean a device which at least controls and / or regulates a power output by the drive motor in the direction of the tool holder the tool spindle, in particular to the torque lock or advantageous to the transmission outputs.
- the drive motor outputs the power in the form of a rotary motion.
- Case movement state reduces a torque delivered by the drive motor in the direction of the tool spindle, a torque output stops and / or causes a torque with a reverse direction in the direction of the tool spindle.
- the drive motor is short-circuited to stop and / or advantageously switched off.
- Torque lock is understood to mean a device which is intended to establish a connection for transmitting torque between the tool spindle and the hand tool housing in at least one operating state
- the torque lock preferably connects the tool spindle directly to the hand tool housing in at least one operating state
- the torque lock could lock the tool spindle in at least one operating state via the transmission and / or
- the torque lock is used in uncontrolled blocking cases in both possible directions of rotation of the tool holder via the tool holder educated.
- the torque lock could be designed for uncontrolled blocking cases in one of the possible directions of rotation of the tool holder, in particular in the clockwise direction, usable.
- Torque lock transmits a force which counteracts a rotational movement of the power tool housing relative to the tool spindle, which is rotatably connected to the workpiece in the inadmissible housing movement state.
- the term "torque-dependent" is understood to mean that the torque lock responds to a change in torque, advantageously to a torque change caused in particular by the reduction of the power output of the drive motor
- a torque originating from the drive motor counteracts the rotational movement of the hand-held power tool housing, in particular the torque originating from the drive motor counteracts the rotary movement if the drive motor is stopped by friction or if the drive motor is a drive direction
- the torque lock connects the tool spindle with the power tool housing when the torque between the drive motor and tool spindle substantially is zero.
- the torque lock is provided to connect the tool spindle with the power tool housing of the torque transmitted to the tool spindle in particular purely mechanically dependent.
- the torque lock has only mechanically active components.
- the torque lock could detect the torque, in particular electrically, in a way that appears appropriate to the person skilled in the art.
- a "torque transmitted to the tool spindle by the drive motor” should in particular be understood to mean a torque which acts at a location between the drive motor and the tool holder, but preferably acts on the torque lock
- the torque lock transmits a torque from the drive motor to the tool spindle during operation, whereby the dependence on the torque can be achieved constructively.
- a torque transmitted from the drive motor to the tool spindle that the torque in the operation of the drive motor, in particular via the transmission, on the torque lock acts and acts from the torque lock, advantageously directly, on the tool spindle.
- the torque lock between the gear and the tool spindle is arranged.
- the torque lock could be arranged between the drive motor and the transmission.
- the torque lock is formed separately from the transmission.
- the torque lock could be at least partially integral with the transmission.
- a "re-commissioning" is to be understood in particular an operating state after a standstill of the tool spindle by a connection of the tool spindle with the power tool housing, in which the motor control a power output of the drive motor, in particular because of
- Housing movement state following operation must operate only the control element for controlling the drive motor.
- the torque lock is provided to solve the connection between the tool spindle and the power tool housing dependent on a torque of the drive motor.
- the motor control is intended to change a drive direction of the drive motor in the impermissible housing movement state, whereby a movement of the power tool housing in the impermissible housing movement state can be reduced particularly quickly.
- change a drive direction of the drive motor is to be understood in particular a sense of direction of a deraillee- from the drive motor in the direction of the tool spindle torque.
- Stop the power output of the drive motor can be understood that the drive motor, as soon as the tool spindle is stationary relative to the power tool housing, no torque in the direction of the tool spindle causes.
- resting is meant in particular an operating state in which the tool spindle is stationary relative to the hand tool housing.
- the torque lock acts directly on the tool spindle, whereby an advantageous positioning and a high degree of effectiveness can be achieved.
- direct is to be understood in this context in particular that the torque lock with the tool spindle at least temporarily in contact and / or is at least partially formed integrally with the tool spindle.
- the torque lock has at least one clamping body which clamps the tool spindle in the event of an impermissible housing movement condition, as a result of which particularly high torques can be transmitted in a wear-resistant manner via the torque lock.
- a “clamping body” is to be understood as meaning, in particular, a component of the torque lock which establishes a connection between the power tool housing and the tool spindle by clamping between two surfaces are mounted displaceably between the power tool housing and the tool spindle.
- the hand-machine tool device comprises a transmission which is between the
- Torque lock and the drive motor is arranged, whereby an advantageous positioning and high efficiency are possible.
- a “gear” should be understood in particular to mean a device which is intended to translate a rotational speed of a rotor of the drive motor into at least one rotational speed, in particular the tool spindle, which is different from the rotational speed.
- FIG. 1 shows a hand tool with a hand tool device according to the invention in a schematic sectional view
- FIG. 2 shows a drive motor, a monitoring unit and a motor control of the handheld power tool device from FIG. 1 in a schematic illustration, FIG.
- FIG. 3 shows a torque lock of the handheld power tool device of FIG.
- FIG. 1 shows a handheld power tool 28 having a handheld power tool device 10 according to the invention and a battery coupling means 30.
- the handheld power tool 28 is designed as a drill driver. Alternatively or additionally, the hand tool 28 could be designed as a percussion drill and / or as a hammer drill.
- the hand tool 28 has, not shown here, a hammer blower. Alternatively, the hand tool 28 could have a detent impactor.
- the battery coupler 30 is intended to provide operating power from one coupled to the battery coupler 30
- Hand tool battery 32 record.
- the handheld power tool device 10 comprises a drive motor 12, a tool spindle 14, a hand tool housing 16, a monitoring unit 18, a motor controller 20, a torque lock 22, a gear 26 and a tool holder 34.
- a rotor 36 of the drive motor 12 drives during operation the gear 26 on.
- the gear 26 is disposed between the torque lock 22 and the drive motor 12.
- the transmission 26 drives parts of the torque lock 22.
- the torque lock 22 drives the tool spindle 14.
- the tool spindle 14 is rotatably connected to the tool holder 34.
- the portable power tool housing 16 is in the form of a pistol.
- the portable power tool housing 16 connects a stator 38 of the drive motor 12, a part of the gear 26 and a part of the torque lock 22 rotatably with each other.
- the tool holder 34 is designed as a chuck. Alternatively, the tool holder 34 could be designed as an SDS tool holder.
- Tool holder 34 is provided to fasten an insert tool 48 rotatably.
- the tool holder 34 is provided to release the insert tool 48 by an unlocking force applied by an operator in the circumferential direction.
- the tool holder 34 could be provided to apply the tool 48 by an axially applied by an operator
- the monitoring unit 18 shown in greater detail in FIG. 2 is intended to detect an impermissible housing movement state.
- the monitoring unit 18 has an acceleration sensor 40, a current sensor 42, a
- the acceleration sensor 40 detects at least one rotational acceleration about an axis of rotation of the insertion tool 48.
- the current sensor 42 detects a current absorbed by the drive motor 12.
- the voltage sensor 44 detects a voltage applied to the drive motor 12.
- the evaluation unit 46 detects by the sensors of the monitoring unit
- the monitoring unit 18 is connected to the engine controller 20 and transmits to the engine controller 20 a parameter with an information as to whether an illegal
- the monitoring unit 18 may be formed at least partially in one piece with the engine controller 20.
- the motor controller 20 is provided to control the drive motor 12 during operation.
- the engine control 20 is connected to an operating unit 50 of the handheld power tool device 10. Via the operating unit 50, an operator controls a speed and a direction of rotation of the tool holder 34.
- the motor controller 20 is provided to drive the drive motor 12 with two different torque to drive it.
- the motor controller 20 reduces a power output of the drive motor 12 by reversing the torque direction of the drive motor 12. Once the tool spindle 14 is stationary relative to the power tool housing 16, the motor controller 20 stops the power output of the drive motor 12.
- the torque lock 22 shown in more detail in Figures 3 and 4 transmits during operation, a torque from the drive motor 12 to the tool spindle 14.
- the torque lock 22 driver 52 which transmit the torque to a driving structure 54 of the tool spindle 14 during operation.
- Torque lock 22 thus acts in the operation directly on the tool spindle 14.
- the connection between the drivers 52 and the driving structure 54 has a defined play in the direction of rotation.
- the drivers 52 of the torque lock 22 are rotatably connected to a portion of the transmission 26.
- the driver 52 are integrally formed with a planetary carrier 56 of the transmission 26.
- the torque lock 22 includes clamping body 24, a locking ring 58, clamping surfaces 60 and clamping body guide means 62.
- the clamping body 24 are formed as rolling elements.
- the locking ring 58 is rotatably connected to the hand tool machine housing 16.
- the clamping surfaces 60 are formed by a part of a surface of the tool spindle 14.
- the clamping body 24 are each arranged between the locking ring 58 and one of the clamping surfaces 60.
- the sprag guide means 62 are rotatably connected to the drivers 52.
- the sprag guide means 62 are each partially disposed between two of the clamp bodies 24. In one operation, that is, when the drive motor 12 a torque in
- Direction tool spindle 14 transmits, lead the clamping body guide means 62, the clamping body 24 and thus prevent jamming of the clamping body 24 between the clamping surfaces 60 and the locking ring 58.
- the drive motor 12 rotates by means of a torque
- Tool spindle 14 relative to the power tool housing 16.
- the insert tool 48 hooked into a workpiece.
- the power tool housing 16 is rotationally accelerated by the torque of the drive motor 12.
- the monitoring unit 18 detects the impermissible housing movement state and outputs a parameter with this information to the motor control 20.
- the engine controller 20 detects the characteristics size.
- the motor controller 20 changes the drive direction of the drive motor 12. This reduces the power output of the drive motor 12.
- the transmitted from the drive motor 12 and the gear 26 to the tool spindle 14 torque is thereby reduced to zero.
- the hooked insert tool 48 rotates the tool spindle 14 relative to the hand tool housing 16 by means of a changed torque.
- the changed torque starts from the insert tool 48.
- the tool spindle 14 transmits the torque via the torque lock 22 to the drive motor 12, the drive motor 12 counteracts the torque.
- the portable power tool housing 16 has a momentum at this time.
- connection between the drivers 52 and the driving structure 54 has a defined play in the direction of rotation. By changing the torque and the game, the driver 52 and the driving structure 54 move relative to each other.
- the clamping body guide means 62 move relative to the clamping surfaces 60.
- the clamping body guide means 62 release the clamping body 24 so far that they clamp in the impermissible housing movement state between the arranged on the tool spindle 14 clamping surfaces 60 and the locking ring 58.
- the clamping body 24 slip briefly over the clamping surfaces 60, whereby the kinetic energy of the power tool housing 16 is partially converted into thermal energy.
- the torque lock 22 is provided to connect in the inadmissible housing movement state, the tool spindle 14 in the direction of rotation with the power tool housing 16 depending on a torque transmitted to the tool spindle 14.
- the motor controller 20 stops a power output of the drive motor 12 as soon as the tool spindle 14 is stationary relative to the portable power tool housing 16.
- the engine controller 20 ignores operator input via the operating unit 50 from the detection of the inadmissible housing movement state to a restart. Subsequently, the handheld power tool device 10 can be put back into operation.
- the torque lock 22 triggers when restarting a connection between the tool spindle 14 and the power tool housing 16 automatically. In this case, a torque applied to the tool spindle 14 originates from the drive motor 12.
- the clamping body guide means 62 move the clamping body 24 from a blocking position.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Power Tools In General (AREA)
Abstract
L'invention porte sur un système de machine-outil portative comprenant un moteur d'entraînement (12), une broche porte-outil (14), un carter de machine-outil portative (16), une unité de surveillance (18), qui est conçue pour détecter un état de mouvement inadmissible du carter, et une commande de moteur (20), qui est reliée à l'unité de surveillance (18) et est conçue pour au moins réduire une puissance débitée par le moteur d'entraînement (12) lorsque l'état de mouvement du carter est inadmissible. Selon l'invention, le système de machine-outil portative comprend un mécanisme de verrouillage de couple (22) qui est conçu pour relier la broche porte-outil (14) dans le sens de rotation au carter de machine-outil portative (16), en fonction d'un couple transmis à la broche porte-outil (14), lorsque l'état de mouvement du carter est inadmissible.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13711034.2A EP2834044B1 (fr) | 2012-04-05 | 2013-03-19 | Dispositif de machine-outil manuelle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012205714.5 | 2012-04-05 | ||
DE102012205714A DE102012205714A1 (de) | 2012-04-05 | 2012-04-05 | Handwerkzeugmaschinengehäuse |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2013149827A2 true WO2013149827A2 (fr) | 2013-10-10 |
WO2013149827A3 WO2013149827A3 (fr) | 2013-11-28 |
Family
ID=47913425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/055714 WO2013149827A2 (fr) | 2012-04-05 | 2013-03-19 | Carter de machine-outil portative |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2834044B1 (fr) |
DE (1) | DE102012205714A1 (fr) |
WO (1) | WO2013149827A2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110625576A (zh) * | 2018-06-21 | 2019-12-31 | 罗伯特·博世有限公司 | 用于拧紧螺钉连接的方法、相应的电动机器和手持式工具机 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013224759A1 (de) * | 2013-12-03 | 2015-06-03 | Robert Bosch Gmbh | Werkzeugmaschinenvorrichtung |
EP4353387A1 (fr) * | 2022-10-12 | 2024-04-17 | Hilti Aktiengesellschaft | Procédé de maintien d'une broche d'une machine-outil mobile |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19641618A1 (de) | 1996-10-09 | 1998-04-30 | Hilti Ag | Einrichtung und Verfahren für handgeführte Werkzeugmaschinen zur Vermeidung von Unfällen durch Werkzeugblockieren |
DE102009000065A1 (de) | 2009-01-08 | 2010-07-15 | Robert Bosch Gmbh | Werkzeuggerät mit einer durch eine Antriebsvorrichtung angetriebenen Spindel |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7552781B2 (en) * | 2004-10-20 | 2009-06-30 | Black & Decker Inc. | Power tool anti-kickback system with rotational rate sensor |
DE102009054762A1 (de) * | 2009-12-16 | 2011-06-22 | Hilti Aktiengesellschaft | Steuerungsverfahren für eine handgeführte Werkzeugmaschine und Werkzeugmaschine |
-
2012
- 2012-04-05 DE DE102012205714A patent/DE102012205714A1/de not_active Withdrawn
-
2013
- 2013-03-19 WO PCT/EP2013/055714 patent/WO2013149827A2/fr active Application Filing
- 2013-03-19 EP EP13711034.2A patent/EP2834044B1/fr active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19641618A1 (de) | 1996-10-09 | 1998-04-30 | Hilti Ag | Einrichtung und Verfahren für handgeführte Werkzeugmaschinen zur Vermeidung von Unfällen durch Werkzeugblockieren |
DE102009000065A1 (de) | 2009-01-08 | 2010-07-15 | Robert Bosch Gmbh | Werkzeuggerät mit einer durch eine Antriebsvorrichtung angetriebenen Spindel |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110625576A (zh) * | 2018-06-21 | 2019-12-31 | 罗伯特·博世有限公司 | 用于拧紧螺钉连接的方法、相应的电动机器和手持式工具机 |
Also Published As
Publication number | Publication date |
---|---|
DE102012205714A1 (de) | 2013-10-10 |
WO2013149827A3 (fr) | 2013-11-28 |
EP2834044B1 (fr) | 2020-02-19 |
EP2834044A2 (fr) | 2015-02-11 |
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