EP2636490B1 - Motor-driven machine tool - Google Patents

Motor-driven machine tool Download PDF

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Publication number
EP2636490B1
EP2636490B1 EP13170277.1A EP13170277A EP2636490B1 EP 2636490 B1 EP2636490 B1 EP 2636490B1 EP 13170277 A EP13170277 A EP 13170277A EP 2636490 B1 EP2636490 B1 EP 2636490B1
Authority
EP
European Patent Office
Prior art keywords
tool
transmission
manner
housing
receptacle
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
EP13170277.1A
Other languages
German (de)
French (fr)
Other versions
EP2636490A1 (en
Inventor
Andreas Moser
Joerg Dehde
Steffen Tiede
Christoph Cramer
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 EP2636490A1 publication Critical patent/EP2636490A1/en
Application granted granted Critical
Publication of EP2636490B1 publication Critical patent/EP2636490B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25F5/02—Construction of casings, bodies or handles
    • B25F5/029—Construction of casings, bodies or handles with storage compartments
    • 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
    • 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
    • Y10T408/36—Machine including plural tools
    • Y10T408/37—Turret of tools
    • 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
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1733—Rotary spindle machine tool [e.g., milling machine, boring, machine, grinding machine, etc.]
    • 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
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1733—Rotary spindle machine tool [e.g., milling machine, boring, machine, grinding machine, etc.]
    • Y10T483/1748—Tool changer between spindle and matrix
    • 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
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1733—Rotary spindle machine tool [e.g., milling machine, boring, machine, grinding machine, etc.]
    • Y10T483/1748—Tool changer between spindle and matrix
    • Y10T483/1752—Tool changer between spindle and matrix including tool holder pivotable about axis
    • Y10T483/1755—Plural tool holders pivotable about common axis
    • 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
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1733—Rotary spindle machine tool [e.g., milling machine, boring, machine, grinding machine, etc.]
    • Y10T483/179—Direct tool exchange between spindle and matrix
    • Y10T483/1798—Direct tool exchange between spindle and matrix including means to project tool from matrix
    • 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
    • Y10T483/00—Tool changing
    • Y10T483/18—Tool transfer to or from matrix
    • Y10T483/1818—Matrix including means to project tool for transfer
    • Y10T483/1827—Rectilinear

Definitions

  • the invention relates to a motor-driven machine tool, in particular a hand tool with rotatably driven tool according to the preamble of claim 1.
  • a motor-driven machine tool in particular a hand tool with rotatably driven tool according to the preamble of claim 1.
  • Such a machine is from the document US 5 065 498 A known.
  • a machine tool is also known as a battery-powered hand tool from the DE 199 51 264 A1 in the embodiment according to their Fig. 12 known.
  • the known hand-held power tool has a main axis extending in the direction of the gun barrel.
  • the machine housing takes as a coaxial drive unit to the engine and the transmission, which is drivingly connected to a tool holder, which is mounted offset to the engine and transmission axis parallel to the main axis of rotation in the front end wall of the machine housing ,
  • a tool change magazine in the form of a hollow cylindrical drum magazine is the tool holder upstream. The axes of the drum magazine and the tool holder are parallel to the main axis.
  • the drum magazine In its drum ring, the drum magazine is provided with parallel to the main axis of the tool chambers, each occupying an aligned overlap position for tool holder depending on the rotational position of the drum magazine. In this overlapping position a displacement of the respective tool between the tool chamber and the tool holder is possible.
  • the displacement takes place via a coaxial to the tool holder, the housing side guided actuator in the form of a control slide, which is arranged in the axial transition region between the gearbox and drum magazine.
  • the latter is likewise mounted in the housing and in its central region enclosed by the drum housing containing the tool chambers from the transmission output shaft interspersed, which is drivingly connected via a the distance between the transmission output shaft and tool holder bridging intermediate gear with the tool holder.
  • Such a structure requires a relatively large manufacturing effort in terms of the correct assignment of the components, makes installation difficult and leads to considerable space requirements.
  • the invention has the object of providing a machine tool, in particular a hand tool, the production of the type mentioned and easy to assemble assembly in a compact design.
  • the tool change magazine is supported in the inventive solution preferably on the transmission side adjustable on the transmission and motor comprehensive drive unit.
  • the tool change magazine is inventively designed as a drum magazine, so that a rotatable support thereof to the drive unit, in particular their transmission proves to be particularly advantageous.
  • the transmission is provided with a Geretehals, which is enclosed by the tool chambers containing drum ring of the drum magazine, which is penetrated by the transmission output shaft, so that in spatially compact design of the transmission offers the opportunity Make the bearing of the transmission output shaft in the transition area to the gearbox neck or within the gearbox neck.
  • connection with an embodiment of the transmission as a planetary gear can be a very compact in length design realize in which the storage of the transmission output shaft and the drum magazine in axially adjacent, or even overlapping areas can be realized.
  • the transmission output shaft with the tool holder connecting intermediate gear in a favorable manner and to store the transmission output shaft can be supported in the region of their free, remote from the gear end in a bearing plate, which also receives the storage for the tool holder.
  • the tool holder is preferably structurally integrated into one of the wheels of the intermediate gear, the other wheel sits as a drive wheel on the transmission output shaft, the intermediate gear is a total of space between this bearing plate and the tool change drum and the enclosed by the tool changing drum gear neck.
  • This structure makes it possible to form the intended for the displacement of a respective tool between a tool chamber of the drum magazine and the tool holder actuator as a control slide in the form of an actuating rod, preferably parallel to the main axis of the machine, which coincides with the axis of the drive unit, circumferentially to the transmission housing in this is performed so that the forces acting on the lock slider forces are supported on the drive unit, and in particular on the transmission housing.
  • This is particularly important in view of the fact that the respective tool in the tool holder in its operating position is axially supported via the lock slider and thus the bearing plate is supported indirectly via the lock slider at its axial engagement in the tool holder, since the tool holder in turn against the Bearing plate is rotatably supported.
  • the design of the lock slider as a control rod makes its axial support in its held in the tool holder tool axially supporting position with simple means possible, such as a extending in the longitudinal direction of the slide, back lying to this support plate on his the locking slide behind supporting position resiliently loaded, and which can be adjusted to unlock in the opposite direction via a button.
  • the only transversely adjustable to the main axis button and the handle for axial adjustment of the control slide are preferably the housing of the machine passing through in corresponding recesses thereof and, based on the support position of the control slide, adjacent to each other.
  • the support plate is in turn preferably clamped in a fixed to the housing, but possibly also to the motor gear unit holder, that it is resiliently biased on its the locking slide engaging behind support layer.
  • About the support plate as well as a frictional application and securing the locking slide in its retracted from the tool holder position can be reached when the support plate rests on the circumference of the slider.
  • a unit extending from the motor to the tool receptacle and comprising the drive unit can be created, to which the machine housing merely surrounds, and thus essentially forms only a covering.
  • the machine housing as such can be made simpler and easier.
  • the machine housing in the training as a hand tool, the machine housing is pistol-shaped and has a handle portion in which an energy storage, especially a battery and the associated control can accommodate cheap, the control is preferably in the transition region between the handle and shaft of the gun-shaped machine housing and In particular, in this transition region, the actuating device is provided, which is preferably designed as a switch-switch combination.
  • the handling of the machine according to the invention is further simplified and facilitated by the fact that the drum-like changing magazine over a portion of its circumference overlapping to a section of the housing, in particular in the region of this cutout protrudes with a segment over the circumference of the housing.
  • This allows the tool change magazine by immediate access be adjusted.
  • such an arrangement in particular in conjunction with a design of the machine housing, which is supported on the unit comprising the drive unit and stiffened by the latter, optionally also allows the tool change magazine to be swung out for fitting with tools, such as drum revolvers.
  • the tool change magazine circumferentially in coverage to the respective chamber corresponding, the respective tool identifying markings, such as symbols, wearing when adjusting the tool change magazine to a housing-side viewing window in Covering come.
  • This window is preferably provided with a transparent, designed in particular as a magnifying cover and is located on the housing side aligned longitudinally to the tool holder, so that there is a simple assignment for the operating position.
  • a hand-held power tool designed as a screwdriver is shown in the figures, which, in the pistol-shaped basic shape of its machine housing 14, has a shaft part 2 corresponding to the gun barrel.
  • the main axis 3 along which, lying coaxially behind one another and determining the main axis, the motor 4 and the transmission 5 are arranged as part of a drive unit extends.
  • the gear 5 is arranged as a tool change magazine 6, a drum magazine.
  • a tool holder 7 is provided, which is shown in the figures with an inserted tool, here a screwdriver bit 8, and which extends parallel to the main axis 3.
  • an actuator 10 in the form of a lock slider 11 is provided, which is to operate via a handle 12.
  • the handle 12 is adjustable in a longitudinal slot 13 extending in the direction of the main axis 3, which lies in the part plane of the machine housing 14 consisting of two housing halves, in which the axis of the tool holder 7 also lies.
  • the machine housing 14 has, in the area of the tool magazine 6 designed as a drum magazine, a cutout 15 in the area of which the tool changer magazine 6 is exposed with a segment 16, the tool changer magazine 6 preferably protruding beyond the outer contour of the machine housing 14 with this segment 16.
  • a viewing window 17 is provided in the overlap area for the tool changer magazine 6, which may preferably be provided with a magnifying-glass insert, so that tool-identifying symbols provided on the circumference of the drum-shaped tool changer magazine 6 are easily identifiable.
  • the viewing window 17 is preferably bridging to the part plane of the housing halves of the machine housing 14 and in alignment with the slot 13 for the handle 12 of the control slide 11. Between the slot 13 and the viewing window 17 is located in front of the handle 12, a button 18th
  • Fig. 2 and 3 show, furthermore, that an accumulator is provided as the energy store 20 in the gripping part 19 transverse to the shank part 2, via which the motor 4 is fed, wherein the control is also arranged in the gripping part 19 and, in turn, in the part plane between the housing halves the operating element 21, over which, designed as a button and / or switch, the control is performed by an operator.
  • the transmission 5 is designed as a planetary gear and lying in alignment with the motor 4 is combined with this to a drive unit.
  • the transmission 5 has a transmission housing 22, which has the output shaft 23 of the transmission 5 enclosing a neck 24 extending in the direction of the main axis.
  • this neck 24 is designed as a drum magazine tool change magazine 6, which has a concentric drum axis to the drum ring 25, in which, axially parallel to the drum axis and the main axis 3 extending, preferably over the circumference of uniform distribution tool chambers 26 are provided, which peripherally to Drum ring 25 which are assigned in overlapping to the viewing window 17 symbols for the respective tools.
  • Fig. 3 shows further that the output shaft 23 of the transmission 5 ends in the region of a lying at the front end of the machine bearing plate 27 and is mounted to the bearing plate 27.
  • the intermediate gear 9 which bridges the radial, given transversely to the main axis 3 distance between the output shaft 23 and the tool holder 7.
  • the tool holder 7 is assigned to the output-side gear 29 of the intermediate gear 9, whose drive-side gear 30 is seated on the output shaft 23 of the transmission 5.
  • the output side gear 29 has a neck 31 which extends in the direction of the axis of this gear 29 and is provided to a central through opening 32 of the gear 29 surrounding.
  • the neck 31 is designed as a tool holder 7 and has for the rotationally fixed support of the respectively inserted tool, here a screwdriver insert 8, a corresponding non-circular profile.
  • FIG. 3 illustrates a respective tool, here the screwdriver insert 8 from a tool chamber 26 of the tool changing drum 6 in the tool holder 7 can be inserted or removed from this.
  • the actuator 10 in the form of the locking slide 11, designed as an actuating rod connected to the handle 12.
  • the locking slide 11 is designed so that the respective tool can be pushed into both the tool holder 7 and also pulled out of this.
  • the lock slider 11 is magnetically formed in its head area.
  • the tool change magazine 6 When inserted into the tool holder 7 tool, here screw 8, the tool change magazine 6 is blocked via the lock slider 11 in its aligned with a respective tool chamber 26 to the tool holder 7 position, via the engagement of the lock slider 11 in the tool holder 7 due to their storage in the Bearing plate 27 and this is supported against the gear housing 22 in which the lock slider 11 is guided longitudinally displaceable.
  • the lock slider 11 is thus a part of the assembly, which extends from the motor 4 to the tool holder 7 and which is embedded in the machine housing 14 of this essentially only enclosing and thus also forms a stiffening of the machine housing 14.
  • a support lever 34 which is designed in the embodiment as a support plate, which at its end remote from the lock slider 11 in a slot-shaped, adjacent to the engine 4 extending guide 35 is held.
  • the support plate 34 acting as supporting support extends, as seen from Fig. 2 can be seen, with an arm 36 into the region of the button 18 and is against its resilient bias in the direction of the button 18 and its support position on this from the particular in Fig. 3 shown support position for adjusting slide 11 adjustable.
  • the support lever formed as a support plate 34 engages with an angled end portion 37, the lock slider 11 so that it forms a contact surface to the rear end face of the lock slider 11.
  • the support lever 34 designed as an actuating rod, can be overridden by the lock slider 11 and preferably supported circumferentially on the lock slider 11, so that the lock slider 11 in its retracted, the tool change magazine 6 releasing position at least frictionally engaged, if necessary, also frictionally engaged and locked over latching.
  • Fig. 3 shows the position of the Geretehalses 24 eccentric to the passing through output shaft 23 of the transmission 5, whose axis is coaxial to the axis of the motor 4 and the transmission 5.
  • tool change magazine 6 is offset in the axial direction.
  • the illustrated embodiment illustrates that due to this design with stable support different eccentricities of the tool changer magazine 6 to the output shaft 23 can be realized, but possibly also a centric arrangement, so given in terms of construction dimensions as well as the number of tool chambers 26 of the tool changer magazine 6 large margins are.
  • the figures also illustrate the possibility, despite the arrangement of a tool changer magazine 6 and the facilitated thereby facilitated to design the shape of a gun hand tool especially slim in her subsequent to the handle portion 19 shank part 2, which facilitates a two-handed guidance of the machine tool 1.
  • a correspondingly designed, also to be guided by hand machine tool 1 can also be used as a drill, in which the tool chambers 26 serve to accommodate drills that can be selectively used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Scissors And Nippers (AREA)
  • Drilling And Boring (AREA)
  • Shearing Machines (AREA)

Description

Die Erfindung bezieht sich auf eine motorisch angetriebene Werkzeugmaschine, insbesondere eine Handwerkzeugmaschine mit drehbar anzutreibendem Werkzeug gemäß dem Oberbegriff des Anspruches 1. Eine derartige Maschine ist aus dem Dokument US 5 065 498 A bekannt.The invention relates to a motor-driven machine tool, in particular a hand tool with rotatably driven tool according to the preamble of claim 1. Such a machine is from the document US 5 065 498 A known.

Stand der TechnikState of the art

Eine Werkzeugmaschine ist auch als batteriebetriebene Handwerkzeugmaschine aus der DE 199 51 264 A1 in der Ausgestaltung gemäß deren Fig. 12 bekannt. Bei pistolenförmigem Maschinengehäuse weist die bekannte Handwerkzeugmaschine eine in Richtung des Pistolenlaufes sich erstreckende Hauptachse auf. Im rückwärtigen, mit dem Handgriff verbundenen Bereich des Schaftteiles nimmt das Maschinengehäuse als koaxiale Antriebseinheit den Motor und das Getriebe auf, das mit einer Werkzeugaufnahme antriebsverbunden ist, die achsversetzt zu Motor und Getriebe bei zur Hauptachse paralleler Drehachse im Bereich der frontseitigen Stirnwand des Maschinengehäuses gelagert ist. Ein Werkzeugwechselmagazin in Form eines hohlzylindrisch ausgebildeten Trommelmagazins ist der Werkzeugaufnahme vorgelagert. Die Achsen des Trommelmagazins und der Werkzeugaufnahme liegen parallel zur Hauptachse. In seinem Trommelring ist das Trommelmagazin mit zur Hauptachse parallelen Werkzeugkammern versehen, die jeweils in Abhängigkeit von der Drehstellung des Trommelmagazins eine fluchtende Überdeckungslage zur Werkzeugaufnahme einnehmen. In dieser Überdeckungslage ist eine Verlagerung des jeweiligen Werkzeuges zwischen der Werkzeugkammer und der Werkzeugaufnahme möglicht. Die Verlagerung erfolgt über ein zur Werkzeugaufnahme koaxial liegendes, gehäuseseitig geführtes Stellglied in Form eines Stellschiebers, der im axialen Übergangsbereich zwischen Getriebe und Trommelmagazin angeordnet ist. Letzteres ist ebenfalls im Gehäuse gelagert und in seinem vom die Werkzeugkammern enthaltenden Trommelring umschlossenen zentralen Bereich von der Getriebeausgangswelle durchsetzt, die über ein den Achsabstand zwischen Getriebeausgangswelle und Werkzeugaufnahme überbrückendes Zwischengetriebe mit der Werkzeugaufnahme antriebsverbunden ist. Ein derartiger Aufbau bedingt hinsichtlich der lagerichtigen Zuordnung der Bauteile einen verhältnismäßig großen Fertigungsaufwand, erschwert die Montage und führt zu erheblichem Raumbedarf.A machine tool is also known as a battery-powered hand tool from the DE 199 51 264 A1 in the embodiment according to their Fig. 12 known. In the case of a pistol-shaped machine housing, the known hand-held power tool has a main axis extending in the direction of the gun barrel. In the rear, connected to the handle portion of the shaft portion, the machine housing takes as a coaxial drive unit to the engine and the transmission, which is drivingly connected to a tool holder, which is mounted offset to the engine and transmission axis parallel to the main axis of rotation in the front end wall of the machine housing , A tool change magazine in the form of a hollow cylindrical drum magazine is the tool holder upstream. The axes of the drum magazine and the tool holder are parallel to the main axis. In its drum ring, the drum magazine is provided with parallel to the main axis of the tool chambers, each occupying an aligned overlap position for tool holder depending on the rotational position of the drum magazine. In this overlapping position a displacement of the respective tool between the tool chamber and the tool holder is possible. The displacement takes place via a coaxial to the tool holder, the housing side guided actuator in the form of a control slide, which is arranged in the axial transition region between the gearbox and drum magazine. The latter is likewise mounted in the housing and in its central region enclosed by the drum housing containing the tool chambers from the transmission output shaft interspersed, which is drivingly connected via a the distance between the transmission output shaft and tool holder bridging intermediate gear with the tool holder. Such a structure requires a relatively large manufacturing effort in terms of the correct assignment of the components, makes installation difficult and leads to considerable space requirements.

Aus US 5065498 ist eine elektrische Bohrmaschine mit einem Werkzeugwechselmagazin bekannt, welches zylindrisch ausgebildet ist und für den Wechsel eines Einsatzwerkzeuges um eine zentrale Achse drehbar gelagert ist.Out US 5065498 an electric drill with a tool change magazine is known, which is cylindrical and is rotatably mounted for the exchange of an insert tool about a central axis.

Offenbarung der ErfindungDisclosure of the invention

Der Erfindung liegt die Aufgabe zugrunde, eine Werkzeugmaschine, insbesondere eine Handwerkzeugmaschine, der eingangs genannten Art fertigungs- und montagegünstig in kompakter Bauweise auszugestalten.The invention has the object of providing a machine tool, in particular a hand tool, the production of the type mentioned and easy to assemble assembly in a compact design.

Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruches 1 gelöst. Die Unteransprüche geben zweckmäßige Weiterbildungen an.This object is achieved with the features of claim 1. The dependent claims indicate expedient developments.

Bei der erfindungsgemäßen Lösung, die insbesondere auch für als Schrauber eingesetzte, handgeführte Werkzeugmaschinen vorteilhaft ist, wird durch die verstellbare Abstützung des Werkzeugwechselmagazins auf der Antriebseinheit eine kompakte und montagegünstige Bauform erreicht, die eine für die Handhabung vorteilhafte, schlanke Gestaltung des Maschinengehäuses ermöglicht, und dies selbst im Schaftbereich bei pistolenförmig gestalteten Maschinengehäusen von Handwerkzeugmaschinen. Dies in Verbindung mit einem verhältnismäßig großen Durchmesser des Werkzeugwechselmagazins, so dass eine Vielzahl von Werkzeugkammern zur Verfügung steht.In the solution according to the invention, which is particularly advantageous for hand-held machine tools used as a screwdriver, a compact and easy-to-install design is achieved by the adjustable support of the tool change magazine on the drive unit, which allows an advantageous for handling, slim design of the machine housing, and this even in the shaft area in pistol-shaped machine housings of hand tool machines. This in conjunction with a relatively large diameter of the tool change magazine, so that a plurality of tool chambers is available.

Das Werkzeugwechselmagazin ist bei der erfindungsgemäßen Lösung bevorzugt getriebeseitig auf der getriebe- und motorumfassenden Antriebseinheit verstellbar abgestützt.The tool change magazine is supported in the inventive solution preferably on the transmission side adjustable on the transmission and motor comprehensive drive unit.

Das Werkzeugwechselmagazin ist erfindungsgemäß als Trommelmagazin ausgebildet, so dass sich eine drehbare Abstützung desselben zur Antriebseinheit, insbesondere deren Getriebe als besonders vorteilhaft erweist. Hierzu ist das Getriebe mit einem Getriebehals versehen sein, der von dem die Werkzeugkammern enthaltenden Trommelring des Trommelmagazins umschlossen ist, der von der Getriebeausgangswelle durchsetzt ist, so dass sich bei räumlich kompakter Gestaltung des Getriebes die Möglichkeit bietet, im Übergangsbereich zum Getriebehals oder innerhalb des Getriebehalses die Lagerung der Getriebeausgangswelle vorzunehmen.The tool change magazine is inventively designed as a drum magazine, so that a rotatable support thereof to the drive unit, in particular their transmission proves to be particularly advantageous. For this purpose, the transmission is provided with a Getriebehals, which is enclosed by the tool chambers containing drum ring of the drum magazine, which is penetrated by the transmission output shaft, so that in spatially compact design of the transmission offers the opportunity Make the bearing of the transmission output shaft in the transition area to the gearbox neck or within the gearbox neck.

Insbesondere in Verbindung mit einer Ausgestaltung des Getriebes als Planetengetriebe lässt sich eine auch in der Länge sehr gedrungene Bauform realisieren, bei der die Lagerung der Getriebeausgangswelle und des Trommelmagazins in axial benachbarten, oder sich sogar überdeckenden Bereichen verwirklichen lässt.In particular, in connection with an embodiment of the transmission as a planetary gear can be a very compact in length design realize in which the storage of the transmission output shaft and the drum magazine in axially adjacent, or even overlapping areas can be realized.

Dadurch ist eine stabile Lagerung der Getriebeausgangswelle ohne die Handlichkeit der Maschine beeinträchtigendes Bauvolumen zu erreichen.As a result, a stable mounting of the transmission output shaft without compromising the manageability of the machine construction volume can be achieved.

Um das die Getriebeausgangswelle mit der Werkzeugaufnahme verbindende Zwischengetriebe in günstiger Weise abzustützen und zu lagern kann die Getriebeausgangswelle im Bereich ihres freien, vom Getriebe abgelegenen Endes in einer Lagerplatte abgestützt werden, die auch die Lagerung für die Werkzeugaufnahme aufnimmt. Die Werkzeugaufnahme ist bevorzugt baulich in eines der Räder des Zwischengetriebes integriert, dessen anderes Rad als Antriebsrad auf der Getriebeausgangswelle sitzt, wobei das Zwischengetriebe insgesamt raumsparend zwischen dieser Lagerplatte und der Werkzeugwechseltrommel sowie dem von der Werkzeugwechseltrommel umschlossenen Getriebehals liegt.In order to support the transmission output shaft with the tool holder connecting intermediate gear in a favorable manner and to store the transmission output shaft can be supported in the region of their free, remote from the gear end in a bearing plate, which also receives the storage for the tool holder. The tool holder is preferably structurally integrated into one of the wheels of the intermediate gear, the other wheel sits as a drive wheel on the transmission output shaft, the intermediate gear is a total of space between this bearing plate and the tool change drum and the enclosed by the tool changing drum gear neck.

Dieser Aufbau macht es möglich, das zur Verlagerung eines jeweiligen Werkzeuges zwischen einer Werkzeugkammer des Trommelmagazins und der Werkzeugaufnahme vorgesehene Stellglied als Stellschieber in Form einer Stellstange auszubilden, die bevorzugt parallel zur Hauptachse der Maschine, die mit der Achse der Antriebseinheit zusammenfällt, umfangsseitig zum Getriebegehäuse in diesem geführt ist, so dass auch die auf den Stellschieber wirkenden Kräfte auf die Antriebseinheit, und im Besonderen auf das Getriebegehäuse abgestützt werden. Dies ist insbesondere im Hinblick darauf von Bedeutung, dass über den Stellschieber das jeweilige Werkzeug in der Werkzeugaufnahme in seiner Betriebslage axial abgestützt ist und somit über den Stellschieber bei dessen axialem Eingriff in die Werkzeugaufnahme auch die Lagerplatte indirekt abgestützt wird, da die Werkzeugaufnahme ihrerseits gegen die Lagerplatte drehbar abgestützt ist.This structure makes it possible to form the intended for the displacement of a respective tool between a tool chamber of the drum magazine and the tool holder actuator as a control slide in the form of an actuating rod, preferably parallel to the main axis of the machine, which coincides with the axis of the drive unit, circumferentially to the transmission housing in this is performed so that the forces acting on the lock slider forces are supported on the drive unit, and in particular on the transmission housing. This is particularly important in view of the fact that the respective tool in the tool holder in its operating position is axially supported via the lock slider and thus the bearing plate is supported indirectly via the lock slider at its axial engagement in the tool holder, since the tool holder in turn against the Bearing plate is rotatably supported.

Die Gestaltung des Stellschiebers als Stellstange macht deren axiale Abstützung in ihrer ein in der Werkzeugaufnahme gehaltenes Werkzeug axial abstützenden Lage mit einfachen Mitteln möglich, so beispielsweise über ein sich in Längsrichtung des Stellschiebers erstreckendes, rückseitig zu diesem liegendes Abstützblech, das auf seine den Stellschieber hintergreifende Abstützlage federnd belastet ist, und das zur Entriegelung in Gegenrichtung über einen Taster verstellt werden kann. Der lediglich quer zur Hauptachse verstellbare Taster und die Handhabe zur axialen Verstellung des Stellschiebers liegen bevorzugt das Gehäuse der Maschine durchsetzend in entsprechenden Aussparungen desselben und, bezogen auf die Abstützlage des Stellschiebers, benachbart zueinander.The design of the lock slider as a control rod makes its axial support in its held in the tool holder tool axially supporting position with simple means possible, such as a extending in the longitudinal direction of the slide, back lying to this support plate on his the locking slide behind supporting position resiliently loaded, and which can be adjusted to unlock in the opposite direction via a button. The only transversely adjustable to the main axis button and the handle for axial adjustment of the control slide are preferably the housing of the machine passing through in corresponding recesses thereof and, based on the support position of the control slide, adjacent to each other.

Das Abstützblech ist seinerseits bevorzugt so in einer zum Gehäuse, gegebenenfalls aber auch zur Motorgetriebeeinheit feststehenden Halterung eingespannt, dass es auf seine den Stellschieber hintergreifende Stützlage federnd vorgespannt ist. Über das Stützblech ist so auch eine reibschlüssige Beaufschlagung und Sicherung des Stellschiebers in dessen aus der Werkzeugaufnahme zurückgezogener Lage erreichbar, wenn das Abstützblech am Umfang des Schiebers anliegt.The support plate is in turn preferably clamped in a fixed to the housing, but possibly also to the motor gear unit holder, that it is resiliently biased on its the locking slide engaging behind support layer. About the support plate as well as a frictional application and securing the locking slide in its retracted from the tool holder position can be reached when the support plate rests on the circumference of the slider.

Insbesondere kann bei der erfindungsgemäßen Lösung eine vom Motor bis zur Werkzeugaufnahme reichende, die Antriebeinheit umfassende Baueinheit geschaffen werden, zu der das Maschinengehäuse lediglich umschließend liegt, und somit im Wesentlichen nur eine Verkleidung bildet. Dadurch lässt sich das Maschinengehäuse als solches einfacher und leichter gestalten. Insbesondere in der Ausbildung als Handwerkzeugmaschine ist das Maschinengehäuse pistolenförmig geformt und weist einen Griffteil auf, in dem sich ein Energiespeicher, insbesondere ein Akkumulator und die zugehörige Steuerung günstig unterbringen lassen, wobei die Steuerung bevorzugt im Übergangsbereich zwischen Griff und Schaft des pistolenförmigen Maschinengehäuses liegt und wobei insbesondere in diesem Übergangsbereich auch die Betätigungseinrichtung vorgesehen ist, die bevorzugt als Taster-Schalter-Kombination ausgebildet ist.In particular, in the solution according to the invention, a unit extending from the motor to the tool receptacle and comprising the drive unit can be created, to which the machine housing merely surrounds, and thus essentially forms only a covering. As a result, the machine housing as such can be made simpler and easier. In particular, in the training as a hand tool, the machine housing is pistol-shaped and has a handle portion in which an energy storage, especially a battery and the associated control can accommodate cheap, the control is preferably in the transition region between the handle and shaft of the gun-shaped machine housing and In particular, in this transition region, the actuating device is provided, which is preferably designed as a switch-switch combination.

Die Handhabung der erfindungsgemäßen Maschine wird des Weiteren dadurch vereinfacht und erleichtert, dass das trommelartige Wechselmagazin über einen Teilbereich seines Umfangs in Überdeckung zu einem Ausschnitt des Gehäuses liegt, insbesondere im Bereich dieses Ausschnittes mit einem Segment über den Umfang des Gehäuses hinausragt. Hierdurch kann das Werkzeugwechelmagazin durch unmittelbaren Zugriff verstellt werden. Ferner erlaubt es eine solche Anordnung, insbesondere in Verbindung mit einer Ausbildung des Maschinengehäuses, die sich auf der die Antriebseinheit umfassenden Baueinheit abstützt und durch diese ausgesteift ist, das Werkzeugwechselmagazin gegebenenfalls auch, wie Trommelrevolvern bekannt, zur Bestückung mit Werkzeugen auszuschwenken.The handling of the machine according to the invention is further simplified and facilitated by the fact that the drum-like changing magazine over a portion of its circumference overlapping to a section of the housing, in particular in the region of this cutout protrudes with a segment over the circumference of the housing. This allows the tool change magazine by immediate access be adjusted. Furthermore, such an arrangement, in particular in conjunction with a design of the machine housing, which is supported on the unit comprising the drive unit and stiffened by the latter, optionally also allows the tool change magazine to be swung out for fitting with tools, such as drum revolvers.

Zur Identifizierung der in den Werkzeugkammern des trommelartigen Werkzeugwechselmagazins jeweils gespeicherten Werkzeuge ist es des Weiteren zweckmäßig, wenn das Werkzeugwechselmagazin umfangsseitig in Überdeckung zur jeweiligen Kammer entsprechende, das jeweilige Werkzeug identifizierende Kennzeichnungen, beispielsweise Symbole, trägt, die bei Verstellung des Werkzeugwechselmagazins zu einem gehäuseseitigen Sichtfenster in Überdeckung kommen. Dieses Sichtfenster ist bevorzugt mit einer durchsichtigen, insbesondere als Lupe gestalteten Abdeckung versehen und liegt gehäuseseitig längsfluchtend zur Werkzeugaufnahme, so dass sich für die Bedienposition eine einfache Zuordnung ergibt.To identify the respectively stored in the tool chambers of the drum-like tool changing magazine tools, it is also useful if the tool change magazine circumferentially in coverage to the respective chamber corresponding, the respective tool identifying markings, such as symbols, wearing when adjusting the tool change magazine to a housing-side viewing window in Covering come. This window is preferably provided with a transparent, designed in particular as a magnifying cover and is located on the housing side aligned longitudinally to the tool holder, so that there is a simple assignment for the operating position.

Weitere Vorteile und zweckmäßige Ausführungen sind den Ansprüchen, der Figurenbeschreibung und den Zeichnungen zu entnehmen. Es zeigen:

Fig. 1
eine perspektivische Darstellung der erfindungsgemäßen Handmaschine als netzunabhängig zu betreibender Schrauber, dessen Energiequelle durch einen Akkumulator gebildet ist,
Fig. 2
eine Fig. 1 entsprechende Darstellung bei abgenommener sichtseitiger Gehäusehälfte der Handmaschine, und
Fig. 3
eine schematisierte Schnittdarstellung der in den Fig. 1 und 2 gezeigten Handmaschine in einem Längsschnitt bei in der Schnittebene liegender Werkzeugaufnahme.
Further advantages and expedient embodiments can be found in the claims, the description of the figures and the drawings. Show it:
Fig. 1
a perspective view of the hand machine according to the invention as a network-independent to be operated screwdriver whose power source is formed by an accumulator,
Fig. 2
a Fig. 1 corresponding representation with removed visible side half of the hand machine, and
Fig. 3
a schematic sectional view of the in the Fig. 1 and 2 shown hand machine in a longitudinal section lying in the cutting plane tool holder.

Als Ausführungsbeispiel für eine motorbetriebene Werkzeugmaschine 1 ist in den Figuren eine als Schrauber gestaltete Handwerkzeugmaschine dargestellt, die, bei pistolenförmiger Grundform ihres Maschinengehäuses 14, einen dem Pistolenlauf entsprechenden Schaftteil 2 aufweist. In Längsrichtung des Schaftteiles 2 erstreckt sich die Hauptachse 3, längs derer, koaxial hintereinander liegend und die Hauptachse bestimmend, der Motor 4 und das Getriebe 5 als Teil einer Antriebseinheit angeordnet sind. Auf das Getriebe 5 folgend ist als Werkzeugwechselmagazin 6 ein Trommelmagazin angeordnet. Zu Hauptachse 3 querversetzt ist eine Werkzeugaufnahme 7 vorgesehen, die in den Figuren mit einem eingesetzten Werkzeug, hier einem Schraubereinsatz 8 dargestellt ist und die sich parallel zur Hauptachse 3 erstreckt. Im über den Motor 4 und das Getriebe 5 erfolgenden Antrieb für die Werkzeugaufnahme 7 liegt ein Zwischengetriebe 9. Ferner ist zur Beschickung der Werkzeugaufnahme 7 mit dem jeweils gewünschten, in dem Werkzeugwechselmagazin 6 bevorrateten Werkzeug, sowie auch zur axialen Abstützung dieses Werkzeuges in seiner Betriebslage in der Werkzeugaufnahme 7 ein Stellglied 10 in Form eines Stellschiebers 11 vorgesehen, der über eine Handhabe 12 zu betätigen ist. Die Handhabe 12 ist in einem in Richtung der Hauptachse 3 sich erstreckenden Längsschlitz 13 verstellbar, der in der Teilebene des aus zwei Gehäusehälften bestehenden Maschinengehäuses 14 liegt, in der auch die Achse der Werkzeugaufnahme 7 liegt.As an exemplary embodiment of a motor-driven machine tool 1, a hand-held power tool designed as a screwdriver is shown in the figures, which, in the pistol-shaped basic shape of its machine housing 14, has a shaft part 2 corresponding to the gun barrel. In the longitudinal direction of the shaft part 2, the main axis 3, along which, lying coaxially behind one another and determining the main axis, the motor 4 and the transmission 5 are arranged as part of a drive unit extends. Following the gear 5 is arranged as a tool change magazine 6, a drum magazine. Transversely offset to the main axis 3, a tool holder 7 is provided, which is shown in the figures with an inserted tool, here a screwdriver bit 8, and which extends parallel to the main axis 3. In order to feed the tool holder 7 with the respective desired stored in the tool changer magazine 6 tool, as well as for the axial support of this tool in its operating position in the tool holder 7 an actuator 10 in the form of a lock slider 11 is provided, which is to operate via a handle 12. The handle 12 is adjustable in a longitudinal slot 13 extending in the direction of the main axis 3, which lies in the part plane of the machine housing 14 consisting of two housing halves, in which the axis of the tool holder 7 also lies.

Das Maschinengehäuse 14 weist im Bereich des als Trommelmagazin gestalteten Werkzeugwechselmagazins 6 einen Ausschnitt 15 auf, in dessen Bereich das Werkzeugwechselmagazin 6 mit einem Segment 16 freiliegt, wobei die Werkzeugwechselmagazin 6 mit diesem Segment 16 bevorzugt über die Außenkontur des Maschinengehäuses 14 übersteht.The machine housing 14 has, in the area of the tool magazine 6 designed as a drum magazine, a cutout 15 in the area of which the tool changer magazine 6 is exposed with a segment 16, the tool changer magazine 6 preferably protruding beyond the outer contour of the machine housing 14 with this segment 16.

Im Überdeckungsbereich zum Werkzeugwechselmagazin 6 ist des Weiteren auch ein Sichtfenster 17 vorgesehen, das bevorzugt mit einem lupenartigen Einsatz versehen sein kann, so dass werkzeugkennzeichnende, auf dem Umfang des trommelförmigen Werkzeugwechselmagazins 6 vorgesehene Symbole leicht identifizierbar sind. Das Sichtfenster 17 liegt bevorzugt überbrückend zur Teilebene der Gehäusehälften des Maschinengehäuses 14 und in Flucht zum Schlitz 13 für die Handhabe 12 des Stellschiebers 11. Zwischen dem Schlitz 13 und dem Sichtfenster 17 liegt vorgelagert zur Handhabe 12 ein Taster 18.In addition, a viewing window 17 is provided in the overlap area for the tool changer magazine 6, which may preferably be provided with a magnifying-glass insert, so that tool-identifying symbols provided on the circumference of the drum-shaped tool changer magazine 6 are easily identifiable. The viewing window 17 is preferably bridging to the part plane of the housing halves of the machine housing 14 and in alignment with the slot 13 for the handle 12 of the control slide 11. Between the slot 13 and the viewing window 17 is located in front of the handle 12, a button 18th

Fig. 2 und 3 zeigen des Weiteren, dass im zum Schaftteil 2 querliegenden Griffteil 19 als Energiespeicher 20 ein Akkumulator vorgesehen ist, über den der Motor 4 gespeist wird, wobei im Griffteil 19 auch die Steuerung angeordnet ist und, wiederum in der Teilebene zwischen den Gehäusehälften das Bedienelement 21, über das, gestaltet als Taster und/oder Schalter, die Steuerung durch eine Bedienperson erfolgt. Fig. 2 and 3 show, furthermore, that an accumulator is provided as the energy store 20 in the gripping part 19 transverse to the shank part 2, via which the motor 4 is fed, wherein the control is also arranged in the gripping part 19 and, in turn, in the part plane between the housing halves the operating element 21, over which, designed as a button and / or switch, the control is performed by an operator.

In der Schnittdarstellung gemäß Fig. 3 ist erkennbar, dass das Getriebe 5 als Planetengetriebe ausgebildet ist und in Flucht zum Motor 4 liegend mit diesem zu einer Antriebseinheit zusammengefasst ist. Das Getriebe 5 weist ein Getriebegehäuse 22 auf, das die Ausgangswelle 23 des Getriebes 5 umschließend einen sich in Richtung der Hauptachse erstreckenden Hals 24 aufweist.In the sectional view according to Fig. 3 It can be seen that the transmission 5 is designed as a planetary gear and lying in alignment with the motor 4 is combined with this to a drive unit. The transmission 5 has a transmission housing 22, which has the output shaft 23 of the transmission 5 enclosing a neck 24 extending in the direction of the main axis.

Im Bereich dieses Halses 24 liegt das als Trommelmagazin gestaltete Werkzeugwechselmagazin 6, das einen zur Trommelachse konzentrischen Trommelring 25 aufweist, in dem, achsparallel zur Trommelachse und zur Hauptachse 3 sich erstreckend, bei über den Umfang bevorzugt gleichmäßiger Verteilung Werkzeugkammern 26 vorgesehen sind, denen umfangsseitig zum Trommelring 25 die in Überdeckung zum Sichtfenster 17 liegenden Symbole für die jeweiligen Werkzeuge zugeordnet sind.In the region of this neck 24 is designed as a drum magazine tool change magazine 6, which has a concentric drum axis to the drum ring 25, in which, axially parallel to the drum axis and the main axis 3 extending, preferably over the circumference of uniform distribution tool chambers 26 are provided, which peripherally to Drum ring 25 which are assigned in overlapping to the viewing window 17 symbols for the respective tools.

Fig. 3 zeigt des Weiteren, dass die Ausgangswelle 23 des Getriebes 5 im Bereich einer am stirnseitigen Ende der Maschine liegenden Lagerplatte 27 endet und zur Lagerplatte 27 gelagert ist. Im axialen Bereich zwischen der Lagerplatte 27 und dem auf dem Hals 24 gelagerten Werkzeugwechselmagazin 6 liegt das Zwischengetriebe 9, das den radialen, quer zur Hauptachse 3 gegebenen Abstand zwischen der Ausgangswelle 23 und der Werkzeugaufnahme 7 überbrückt. Hierbei ist die Werkzeugaufnahme 7 dem abtriebsseitigen Zahnrad 29 des Zwischengetriebes 9 zugeordnet, dessen antriebsseitiges Zahnrad 30 auf der Ausgangswelle 23 des Getriebes 5 sitzt. Das abtriebsseitige Zahnrad 29 weist einen Hals 31 auf, der sich in Richtung der Achse dieses Zahnrades 29 erstreckt und umschließend zu einer zentralen Durchtrittsöffnung 32 des Zahnrades 29 vorgesehen ist. Der Hals 31 ist als Werkzeugaufnahme 7 gestaltet und weist zur drehfesten Abstützung des jeweils eingeschobenen Werkzeuges, hier eines Schraubereinsatzes 8, ein entsprechendes Unrundprofil auf. Durch Drehen des Werkzeugwechselmagazins 6 wird eine jeweilige Werkzeugkammer 26 in koaxiale Überdeckung zur Werkzeugaufnahme 7 gebracht, wobei die jeweiligen Überdeckungslagen jeweils als überfahrbare Rastlagen festgelegt sind. Fig. 3 shows further that the output shaft 23 of the transmission 5 ends in the region of a lying at the front end of the machine bearing plate 27 and is mounted to the bearing plate 27. In the axial region between the bearing plate 27 and mounted on the neck 24 tool change magazine 6 is the intermediate gear 9, which bridges the radial, given transversely to the main axis 3 distance between the output shaft 23 and the tool holder 7. Here, the tool holder 7 is assigned to the output-side gear 29 of the intermediate gear 9, whose drive-side gear 30 is seated on the output shaft 23 of the transmission 5. The output side gear 29 has a neck 31 which extends in the direction of the axis of this gear 29 and is provided to a central through opening 32 of the gear 29 surrounding. The neck 31 is designed as a tool holder 7 and has for the rotationally fixed support of the respectively inserted tool, here a screwdriver insert 8, a corresponding non-circular profile. By turning the tool changer magazine 6, a respective tool chamber 26 is brought into coaxial overlap to the tool holder 7, wherein the respective overlapping layers are each defined as traversable locking positions.

Bei gegebener Überdeckungslage ist, wie Fig. 3 veranschaulicht, ein jeweiliges Werkzeug, hier der Schraubereinsatz 8 aus einer Werkzeugkammer 26 der Werkzeugwechseltrommel 6 in die Werkzeugaufnahme 7 einschiebbar oder aus dieser entnehmbar. Dies geschieht über das Stellglied 10 in Form des Stellschiebers 11, der als Stellstange gestaltet mit der Handhabe 12 verbunden ist. Kopfseitig ist der Stellschieber 11 so gestaltet, dass das jeweilige Werkzeug sowohl in die Werkzeugaufnahme 7 hineingeschoben sowie auch aus dieser herausgezogen werden kann. Bevorzugt ist hierzu der Stellschieber 11 in seinem Kopfbereich magnetisch ausgebildet. Bei in die Werkzeugaufnahme 7 eingeschobenem Werkzeug, hier Schraubeinsatz 8, ist das Werkzeugwechselmagazin 6 über den Stellschieber 11 in seiner mit einer jeweiligen Werkzeugkammer 26 zur Werkzeugaufnahme 7 fluchtenden Lage blockiert, wobei über den Eingriff des Stellschiebers 11 in die Werkzeugaufnahme 7 aufgrund deren Lagerung in der Lagerplatte 27 auch diese gegen das Getriebegehäuse 22 abgestützt ist, in dem der Stellschieber 11 längsverschieblich geführt ist. Der Stellschieber 11 ist somit ein Teil der Baueinheit, die vom Motor 4 bis zur Werkzeugaufnahme 7 reicht und die eingebettet in das Maschinengehäuse 14 von diesem im Wesentlichen lediglich verkleidend umschlossen ist und damit auch eine Aussteifung des Maschinengehäuses 14 bildet.Given the coverage situation is how Fig. 3 illustrates a respective tool, here the screwdriver insert 8 from a tool chamber 26 of the tool changing drum 6 in the tool holder 7 can be inserted or removed from this. This is done via the actuator 10 in the form of the locking slide 11, designed as an actuating rod connected to the handle 12. On the head side, the locking slide 11 is designed so that the respective tool can be pushed into both the tool holder 7 and also pulled out of this. Preferably, for this purpose, the lock slider 11 is magnetically formed in its head area. When inserted into the tool holder 7 tool, here screw 8, the tool change magazine 6 is blocked via the lock slider 11 in its aligned with a respective tool chamber 26 to the tool holder 7 position, via the engagement of the lock slider 11 in the tool holder 7 due to their storage in the Bearing plate 27 and this is supported against the gear housing 22 in which the lock slider 11 is guided longitudinally displaceable. The lock slider 11 is thus a part of the assembly, which extends from the motor 4 to the tool holder 7 and which is embedded in the machine housing 14 of this essentially only enclosing and thus also forms a stiffening of the machine housing 14.

In seiner ein jeweiliges Werkzeug, hier den Schraubereinsatz 8, in der Werkzeugaufnahme 7 abstützenden Lage ist der Stellschieber 11 über einen Abstützhebel 34 verriegelt, der im Ausführungsbeispiel als Abstützblech gestaltet ist, das an seinem vom Stellschieber 11 abgelegenen Ende in einer schlitzförmigen, benachbart zum Motor 4 sich erstreckenden Führung 35 gehalten ist. Das als Abstützhebel 34 wirkende Abstützblech erstreckt sich, wie aus Fig. 2 ersichtlich, mit einem Arm 36 bis in den Bereich des Tasters 18 und ist entgegen seiner federnden Vorspannung in Richtung auf den Taster 18 bzw. seine Abstützlage über diesen aus der insbesondere in Fig. 3 gezeigten Abstützlage zum Stellschieber 11 verstellbar. In der Abstützlage hintergreift der als Abstützblech ausgebildete Abstützhebel 34 mit einem abgewinkelten Endteil 37 den Stellschieber 11, so dass dieses zum rückwärtigen Stirnende des Stellschiebers 11 eine Anlagefläche bildet.In his a respective tool, here the screwdriver bit 8, in the tool holder 7 supporting position of the lock slider 11 is locked via a support lever 34 which is designed in the embodiment as a support plate, which at its end remote from the lock slider 11 in a slot-shaped, adjacent to the engine 4 extending guide 35 is held. The support plate 34 acting as supporting support extends, as seen from Fig. 2 can be seen, with an arm 36 into the region of the button 18 and is against its resilient bias in the direction of the button 18 and its support position on this from the particular in Fig. 3 shown support position for adjusting slide 11 adjustable. In the support position, the support lever formed as a support plate 34 engages with an angled end portion 37, the lock slider 11 so that it forms a contact surface to the rear end face of the lock slider 11.

Über die Betätigung des Tasters 18 aus der Abstützlage ausgelenkt, ist der Abstützhebel 34, als Stellstange ausgebildet, vom Stellschieber 11 überfahrbar und stützt sich hierbei bevorzugt umfangsseitig am Stellschieber 11 ab, so dass der Stellschieber 11 in seiner zurückgezogenen, das Werkzeugwechselmagazin 6 freigebenden Lage zumindest reibschlüssig, gegebenenfalls auch reibschlüssig und überfahrbar verrastend gesichert ist.About the operation of the button 18 is deflected from the support position, the support lever 34, designed as an actuating rod, can be overridden by the lock slider 11 and preferably supported circumferentially on the lock slider 11, so that the lock slider 11 in its retracted, the tool change magazine 6 releasing position at least frictionally engaged, if necessary, also frictionally engaged and locked over latching.

Bei der gezeigten erfindungsgemäßen Lösung ist, wie insbesondere Fig. 3 zeigt, die Lage des Getriebehalses 24 exzentrisch zur durchsetzenden Ausgangswelle 23 des Getriebes 5, deren Achse zur Achse des Motors 4 und des Getriebes 5 koaxial liegt. Entsprechend dem Achsversatz des Getriebehalses 24 zur Ausgangswelle 23 liegt auch das auf dem Getriebehals 24 gelagerte Werkzeugwechselmagazin 6 achsversetzt. Das gezeigte Ausführungsbeispiel verdeutlicht, dass aufgrund dieser Konstruktion bei stabiler Abstützung unterschiedliche Exzentrizitäten des Werkzeugwechselmagazins 6 zur Abtriebswelle 23 realisierbar sind, gegebenenfalls aber auch eine zentrische Anordnung, so dass im Hinblick auf die Bauabmessungen wie auch die Zahl der Werkzeugkammern 26 des Werkzeugwechselmagazins 6 große Spielräume gegeben sind. Insbesondere veranschaulichen die Figuren aber auch die Möglichkeit, trotz der Anordnung eines Werkzeugwechselmagazins 6 und der dadurch erreichten Bedienerleichterungen die in Form einer Pistole gestaltete Handwerkzeugmaschine insbesondere in ihrem an den Griffteil 19 anschließenden Schaftteil 2 schlank zu gestalten, was eine beidhändige Führung der Werkzeugmaschine 1 erleichtert.In the inventive solution shown is, in particular Fig. 3 shows the position of the Getriebehalses 24 eccentric to the passing through output shaft 23 of the transmission 5, whose axis is coaxial to the axis of the motor 4 and the transmission 5. According to the axial offset of the transmission neck 24 to the output shaft 23 and the mounted on the gear neck 24 tool change magazine 6 is offset in the axial direction. The illustrated embodiment illustrates that due to this design with stable support different eccentricities of the tool changer magazine 6 to the output shaft 23 can be realized, but possibly also a centric arrangement, so given in terms of construction dimensions as well as the number of tool chambers 26 of the tool changer magazine 6 large margins are. In particular, however, the figures also illustrate the possibility, despite the arrangement of a tool changer magazine 6 and the facilitated thereby facilitated to design the shape of a gun hand tool especially slim in her subsequent to the handle portion 19 shank part 2, which facilitates a two-handed guidance of the machine tool 1.

Eine entsprechend gestaltete, auch von Hand zu führende Werkzeugmaschine 1 kann auch als Bohrmaschine eingesetzt werden, bei der die Werkzeugkammern 26 der Aufnahme von Bohrern dienen, die wahlweise zum Einsatz gebracht werden können.A correspondingly designed, also to be guided by hand machine tool 1 can also be used as a drill, in which the tool chambers 26 serve to accommodate drills that can be selectively used.

Claims (8)

  1. Motor-driven power tool (1), in particular portable power tool, having a tool to be driven in rotation, having a drive unit and a drum-like tool change magazine (6), the tool chambers (26) of which are each adjustable into a transfer position onto a tool receptacle (7) to be equipped, wherein the tool change magazine (6) is supported in an adjustable manner on the drive unit, in that the drive unit has a transmission (5) connected to the motor (4) and the drum-like tool change magazine (6) is mounted in a manner enclosing a part of the transmission (5) on the housing (22) thereof, and the tool receptacle (7) is driven via an intermediate transmission (9) which connects the tool receptacle (7), extending in a parallel and transversely offset manner with respect to a main axis (3) determined by the motor (4) and the transmission (5), and the transmission output shaft (23), which passes through the space enclosed by the drum ring of the tool change magazine (6), characterized in that a drive-side gearwheel (30) of the intermediate transmission (9) is arranged on the transmission output shaft (23) and an output-side gearwheel (29) has a neck (31) formed in one piece with the output-side gearwheel (29), said neck (31) extending in the direction of the axis of this gearwheel (29) and being provided in a manner enclosing a central through-passage opening (32) in the gearwheel (29), wherein the neck (31) is designed as a tool receptacle (7) and has a non-round profile corresponding to the tool in order to support the respectively introduced tool in a rotationally fixed manner, and in that the housing (22) of the transmission (5) has a neck (24) that encloses the transmission output shaft (23) and is formed in one piece with the housing (22) of the transmission (5), the tool change magazine (6) being mounted on said neck (24).
  2. Power tool according to Claim 1, characterized in that the transmission output shaft (23) is guided on the end side in a bearing plate (27) which is positionally fixed with respect to the machine housing (14) and forms the mounting for the tool receptacle (7).
  3. Power tool according to Claim 2, characterized in that the intermediate transmission (9) is located between the tool change magazine (6) and the bearing plate (27).
  4. Power tool according to one of the preceding claims, characterized in that a positioning member (10) which is displaceable in the axial direction of the tool receptacle (7) towards the respectively overlapping tool chamber (26) of the tool change magazine (6) is provided.
  5. Power tool according to Claim 4, characterized in that the positioning member (10) in the form of a positioning slide (11) is guided on the drive unit in a positionally displaceable manner with respect to the machine housing (14) and, with respect to an operating position, axially supports, in a manner passing through the respective tool chamber (26), the tool, in particular a screwdriver bit (8), pushed out of said tool chamber (26) into the tool receptacle (7).
  6. Power tool according to Claim 5, characterized in that the positioning slide (11) is lockable in its supporting position with respect to the tool located in each case in the tool receptacle (7), in a releasable manner via a supporting lever (34).
  7. Power tool according to Claim 6, characterized in that the locking position of the supporting lever (34) is adjustable by pushing a button.
  8. Power tool according to one of the preceding claims, characterized in that the power tool (1) is formed as a hand-held screwdriver in the form of a screwdriver gun having an energy storage device (20) arranged in the handle part (19).
EP13170277.1A 2006-12-18 2007-10-18 Motor-driven machine tool Active EP2636490B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006059688A DE102006059688A1 (en) 2006-12-18 2006-12-18 Motor driven machine tool
EP07821489.7A EP2101960B1 (en) 2006-12-18 2007-10-18 Motor-driven machine tool

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP07821489.7 Division 2007-10-18
EP07821489.7A Division EP2101960B1 (en) 2006-12-18 2007-10-18 Motor-driven machine tool

Publications (2)

Publication Number Publication Date
EP2636490A1 EP2636490A1 (en) 2013-09-11
EP2636490B1 true EP2636490B1 (en) 2015-09-16

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ID=38669862

Family Applications (2)

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EP07821489.7A Active EP2101960B1 (en) 2006-12-18 2007-10-18 Motor-driven machine tool
EP13170277.1A Active EP2636490B1 (en) 2006-12-18 2007-10-18 Motor-driven machine tool

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP07821489.7A Active EP2101960B1 (en) 2006-12-18 2007-10-18 Motor-driven machine tool

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Country Link
US (1) US8007424B2 (en)
EP (2) EP2101960B1 (en)
CN (2) CN101563192B (en)
DE (1) DE102006059688A1 (en)
WO (1) WO2008074536A1 (en)

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Also Published As

Publication number Publication date
EP2101960A1 (en) 2009-09-23
WO2008074536A1 (en) 2008-06-26
EP2636490A1 (en) 2013-09-11
DE102006059688A1 (en) 2008-06-19
CN102161197B (en) 2015-06-03
CN101563192B (en) 2011-11-16
CN101563192A (en) 2009-10-21
EP2101960B1 (en) 2013-08-14
US20100279839A1 (en) 2010-11-04
CN102161197A (en) 2011-08-24
US8007424B2 (en) 2011-08-30

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