EP2139654A1 - Motor-driven machine tool - Google Patents

Motor-driven machine tool

Info

Publication number
EP2139654A1
EP2139654A1 EP08716952A EP08716952A EP2139654A1 EP 2139654 A1 EP2139654 A1 EP 2139654A1 EP 08716952 A EP08716952 A EP 08716952A EP 08716952 A EP08716952 A EP 08716952A EP 2139654 A1 EP2139654 A1 EP 2139654A1
Authority
EP
European Patent Office
Prior art keywords
machine tool
eccentric
output shaft
tool
tool according
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.)
Granted
Application number
EP08716952A
Other languages
German (de)
French (fr)
Other versions
EP2139654B1 (en
Inventor
Adolf Zaiser
Jens Blum
Heiko Roehm
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 EP2139654A1 publication Critical patent/EP2139654A1/en
Application granted granted Critical
Publication of EP2139654B1 publication Critical patent/EP2139654B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B19/00—Other reciprocating saws with power drive; Fret-saws
    • B27B19/006—Other reciprocating saws with power drive; Fret-saws with oscillating saw blades; Hand saws with oscillating saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor

Definitions

  • the invention relates to a motor-driven machine tool with a drive shaft driven by a drive unit and an output shaft on which the tool is received, according to the preamble of claim 1.
  • the invention has for its object to provide a compact, motor-driven machine tool with rotatably driven tool.
  • the motor-driven machine tool which is in particular a hand tool whose tool performs a rotary motion, in particular a rotary pendulum movement, has parallel to each other arranged input and output shafts, which is additionally provided that the output shaft at least partially in height and parallel runs to the drive unit.
  • the output shaft with the tool is immediately adjacent to the drive unit including the drive shaft belonging to the drive shaft, the machine tool due to the axial overlap of the output shaft and drive unit in the axial direction builds short and takes up correspondingly little space.
  • Another advantage of the parallel arrangement is that the motion transmission between the input and output shaft due to the parallel axes of rotation without play or at least with reduced clearance is feasible.
  • a line-shaped or planar contact of the components involved in the coupling device between the input and output shafts is possible; a point-like power transmission, which occurs for example in the prior art at an angle arranged waves and locally high force loads with the risk of increased play can be avoided.
  • Coupling device involved components is particularly suitable for a Exzenterkoppel founded for transmitting a rotary pendulum motion of the rotating drive shaft to the output shaft which receives the tool.
  • This eccentric coupling device comprises a coupling member and an eccentric member, which are each arranged on different shafts, wherein the coupling member preferably on the Output shaft and the eccentric advantageous sitting on the drive shaft.
  • the rotational movement of the revolving eccentric member is transmitted via the coupling member in the rotary pendulum movement of the output shaft. Due to the parallel arrangement of the drive and output shaft, a linear or flat contact between the coupling member and the eccentric member can be realized.
  • the eccentric member is expediently designed as eccentric cam, whose contour is scanned by the coupling member.
  • the coupling member is designed, for example fork-shaped, wherein the two forks engage around the eccentric member.
  • the planar or linear contact between coupling member and eccentric member is effected in particular by part-circular or possibly also circular
  • the linear or planar system allows a better distribution of the forces to be transmitted and thus a lower punctual load.
  • a component of the coupling device is arranged adjacent to the tool on the output shaft. Furthermore, it is expedient to carry out the drive unit as an electric motor and to arrange the stator of the electric motor on the side facing away from the tool in the housing of the machine tool. The positioning of the coupling device on the side facing the tool allows a correspondingly short design of the output shaft, which is still supported by the fact that the drive shaft is also located on the side facing the tool and is rotationally urged by the drive unit. In the axial direction, the installation space length is primarily determined by the drive unit, that is, as a rule, by the electric motor. - A -
  • FIG. 1 shows a section through a hand tool, the tool an oscillating rotary or
  • Pendulum vibration for sawing and / or grinding exercises wherein the tool is held on an output shaft which is parallel to an electric motor driven drive shaft,
  • Fig. 3 the eccentric coupling device in a single representation, via which the rotational movement of the electric motor-driven drive shaft is converted into the rotational pendulum movement of the tool-carrying output shaft.
  • the hand tool 1 shown in FIG. 1 has in a housing 9 an electric drive motor 2, consisting of a housing-fixed stator 3 and an armature or rotor 4, on the rotatably and coaxially a drive shaft 5 is arranged.
  • the rotational movement of the drive shaft 5 is transmitted via an eccentric coupling 8 to an output shaft 6, which carries a tool 7.
  • the eccentric coupling 8 By means of the eccentric coupling 8, the rotary movement of the drive shaft 5 is transmitted in a rotary pendulum movement of the output shaft 6.
  • the Exzenterkoppel consists of a coupling fork 12 which is rotatably connected to the output shaft 6, and an eccentric cam 13 which is rotatably connected to the drive shaft 5, wherein the coupling fork 12 abuts the contour of the eccentric cam 13, so that with respect to the axis of rotation 10 of the drive shaft 5 eccentric movement of the eccentric cam 13 can be scanned by the coupling fork 12 and converted into an oscillating pendulum motion about the axis of rotation 11 of the output shaft 6.
  • Eccentric coupling device 8 is adjacent to pivot bearings 14 and 15, via which the drive shaft 5 and the output shaft 6 are rotatably mounted in its housing 9 at its front side facing the tool 7.
  • Eccentric coupling 8, ie the coupling fork 12 and the eccentric cam 13, are thus adjacent to the tool 7 facing end side of the respective waves.
  • the coupling fork 12, as part of the eccentric coupling device 8 has two fork tines 12 a and 12 b, which comprise the contour of the eccentric cam 13.
  • the section between the fork tines 12a and 12b is expediently part-circular in shape and adapted to the circular shape of the eccentric cam 13, so that an areal contact between the coupling fork 12 and the outer contour of the eccentric cam 13 is given over an angular section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Sawing (AREA)

Abstract

A motor-driven machine tool (1) with a tool (7) that can be rotatably driven comprises a drive shaft (5) and a driven shaft (6) on which the tool (7) is received, the rotational movement of the drive shaft (5) being transmissible onto the driven shaft (6) via a coupling device (8). The drive shaft and the driven shaft are arranged in parallel, the driven shaft (6) extending at least partially at the level of and parallel to the drive unit.

Description

BeSchreibungDescription

Titeltitle

Motorisch angetriebene WerkzeugmaschineMotor driven machine tool

Die Erfindung bezieht sich auf eine motorisch angetriebene Werkzeugmaschine mit einer von einer Antriebseinheit angetriebenen Antriebswelle und einer Abtriebswelle, auf der das Werkzeug aufgenommen ist, nach dem Oberbegriff des Anspruches 1.The invention relates to a motor-driven machine tool with a drive shaft driven by a drive unit and an output shaft on which the tool is received, according to the preamble of claim 1.

Stand der TechnikState of the art

In der DE 10 2004 050 798 Al wird eine Handwerkzeugmaschine mit einer oszillierend antreibbaren Arbeitswelle beschrieben, auf der ein Werkzeug aufgenommen ist, wobei der oszillierende Antrieb zu einer Drehpendelbewegung des Werkzeugs führt, das sowohl zum Schleifen als auch zum Schneiden eingesetzt werden kann. Die Arbeits- bzw. Werkzeugwelle mit dem Werkzeug wird von einem drehfest verbundenen Arm angetrieben, der als Teil einer Exzenterkoppeleinrichtung mit einer Exzenterscheibe zusammenwirkt, die von einem Elektromotor angetrieben wird.DE 10 2004 050 798 A1 describes a hand-held power tool with an oscillating drivable working shaft on which a tool is received, wherein the oscillating drive leads to a rotational pendulum movement of the tool, which can be used both for grinding and for cutting. The work or tool shaft with the tool is driven by a non-rotatably connected arm, which cooperates as part of a Exzenterkoppeleinrichtung with an eccentric, which is driven by an electric motor.

Offenbarung der ErfindungDisclosure of the invention

Von diesem Stand der Technik ausgehend liegt der Erfindung die Aufgabe zugrunde, eine kompakt bauende, motorisch angetriebene Werkzeugmaschine mit drehbar anzutreibendem Werkzeug anzugeben.Based on this prior art, the invention has for its object to provide a compact, motor-driven machine tool with rotatably driven tool.

Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruches 1 gelöst. Die Unteransprüche geben zweckmäßige Weiterbildungen an. Die motorisch angetriebene Werkzeugmaschine, bei der es sich insbesondere um eine Handwerkzeugmaschine handelt, deren Werkzeug eine Drehbewegung, insbesondere eine Drehpendelbewegung ausführt, weist parallel zueinander angeordnete Antriebs- und Abtriebswellen auf, wobei zusätzlich vorgesehen ist, dass die Abtriebswelle zumindest teilweise in Höhe der und parallel zur Antriebseinheit verläuft. Auf diese Weise ist sichergestellt, dass sich die Abtriebswelle mit dem Werkzeug unmittelbar neben der Antriebseinheit einschließlich der zur Antriebseinheit gehörenden Antriebswelle befindet, wobei die Werkzeugmaschine aufgrund der axialen Überschneidung von Abtriebswelle und Antriebseinheit in Achsrichtung kurz baut und entsprechend wenig Bauraum beansprucht. Gleiches gilt für die Richtung quer zu den Wellen, da die parallele Anordnung der Abtriebswelle in Querrichtung kaum mehr Platz beansprucht als die Antriebseinheit .This object is achieved with the features of claim 1. The dependent claims indicate expedient developments. The motor-driven machine tool, which is in particular a hand tool whose tool performs a rotary motion, in particular a rotary pendulum movement, has parallel to each other arranged input and output shafts, which is additionally provided that the output shaft at least partially in height and parallel runs to the drive unit. In this way, it is ensured that the output shaft with the tool is immediately adjacent to the drive unit including the drive shaft belonging to the drive shaft, the machine tool due to the axial overlap of the output shaft and drive unit in the axial direction builds short and takes up correspondingly little space. The same applies to the direction across the waves, since the parallel arrangement of the output shaft in the transverse direction hardly takes up more space than the drive unit.

Ein weiterer Vorteil der parallelen Anordnung liegt darin, dass die Bewegungsübertragung zwischen Antriebs- und Abtriebswelle aufgrund der parallelen Drehachsen spielfrei oder zumindest mit reduziertem Spiel durchführbar ist. Es ist insbesondere eine linienförmige bzw. flächenförmige Anlage der an der Koppeleinrichtung zwischen Antriebs- und Abtriebswelle beteiligten Bauteile aneinander möglich; eine punktförmige Kraftübertragung, die beispielsweise im Stand der Technik bei winklig angeordneten Wellen auftritt und lokal hohe Kraftbelastungen mit der Gefahr erhöhten Spiels aufweist, kann vermieden werden.Another advantage of the parallel arrangement is that the motion transmission between the input and output shaft due to the parallel axes of rotation without play or at least with reduced clearance is feasible. In particular, a line-shaped or planar contact of the components involved in the coupling device between the input and output shafts is possible; a point-like power transmission, which occurs for example in the prior art at an angle arranged waves and locally high force loads with the risk of increased play can be avoided.

Die linienförmige bzw. flächige Berührung der an derThe linear or surface contact on the

Koppeleinrichtung beteiligten Bauteile eignet sich insbesondere für eine Exzenterkoppeleinrichtung zur Übertragung einer Drehpendelbewegung von der rotierenden Antriebswelle auf die Abtriebswelle, die das Werkzeug aufnimmt. Diese Exzenterkoppeleinrichtung umfasst ein Koppelglied und ein Exzenterglied, die jeweils auf unterschiedlichen Wellen angeordnet sind, wobei das Koppelglied bevorzugt auf der Abtriebswelle und das Exzenterglied vorteilhaft auf der Antriebswelle sitzt. Die Drehbewegung des umlaufenden Exzentergliedes wird über das Koppelglied in die Drehpendelbewegung der Abtriebswelle übertragen. Aufgrund der parallelen Anordnung von Antriebs- und Abtriebswelle kann eine linienförmige oder flächige Anlage zwischen Koppelglied und Exzenterglied realisiert werden.Coupling device involved components is particularly suitable for a Exzenterkoppeleinrichtung for transmitting a rotary pendulum motion of the rotating drive shaft to the output shaft which receives the tool. This eccentric coupling device comprises a coupling member and an eccentric member, which are each arranged on different shafts, wherein the coupling member preferably on the Output shaft and the eccentric advantageous sitting on the drive shaft. The rotational movement of the revolving eccentric member is transmitted via the coupling member in the rotary pendulum movement of the output shaft. Due to the parallel arrangement of the drive and output shaft, a linear or flat contact between the coupling member and the eccentric member can be realized.

Hierfür ist das Exzenterglied zweckmäßigerweise als Exzenternocken ausgebildet, dessen Kontur von dem Koppelglied abgetastet wird. Das Koppelglied ist beispielsweise gabelförmig ausgeführt, wobei die beiden Gabelzinken das Exzenterglied umgreifen. Die flächige oder linienförmige Anlage zwischen Koppelglied und Exzenterglied erfolgt insbesondere durch teilkreisförmige oder gegebenenfalls auch kreisförmigeFor this purpose, the eccentric member is expediently designed as eccentric cam, whose contour is scanned by the coupling member. The coupling member is designed, for example fork-shaped, wherein the two forks engage around the eccentric member. The planar or linear contact between coupling member and eccentric member is effected in particular by part-circular or possibly also circular

Ausbildung der aneinanderliegenden Konturen beider Bauteile. Die linienförmige bzw. flächige Anlage erlaubt eine bessere Verteilung der zu übertragenden Kräfte und damit eine geringere punktuelle Belastung.Forming the adjacent contours of both components. The linear or planar system allows a better distribution of the forces to be transmitted and thus a lower punctual load.

Gemäß einer weiteren vorteilhaften Ausführung ist ein Bauteil der Koppeleinrichtung benachbart zu dem Werkzeug auf der Abtriebswelle angeordnet. Des Weiteren ist es zweckmäßig, die Antriebseinheit als Elektromotor auszuführen und den Stator des Elektromotors auf der dem Werkzeug abgewandten Seite im Gehäuse der Werkzeugmaschine anzuordnen. Die Positionierung der Koppeleinrichtung auf der dem Werkzeug zugewandten Seite erlaubt eine entsprechend kurze Ausbildung der Abtriebswelle, was dadurch noch unterstützt wird, dass die Antriebswelle sich ebenfalls auf der dem Werkzeug zugewandten Seite befindet und von der Antriebseinheit drehbeaufschlagt wird. In Achsrichtung wird dabei die Bauraumlänge in erster Linie von der Antriebseinheit, also in der Regel von dem Elektromotor bestimmt . - A -According to a further advantageous embodiment, a component of the coupling device is arranged adjacent to the tool on the output shaft. Furthermore, it is expedient to carry out the drive unit as an electric motor and to arrange the stator of the electric motor on the side facing away from the tool in the housing of the machine tool. The positioning of the coupling device on the side facing the tool allows a correspondingly short design of the output shaft, which is still supported by the fact that the drive shaft is also located on the side facing the tool and is rotationally urged by the drive unit. In the axial direction, the installation space length is primarily determined by the drive unit, that is, as a rule, by the electric motor. - A -

Weitere Vorteile und zweckmäßige Ausführungen sind den weiteren Ansprüchen, der Figurenbeschreibung und den Zeichnungen zu entnehmen. Es zeigen:Further advantages and expedient embodiments can be taken from the further claims, the description of the figures and the drawings. Show it:

Fig. 1 einen Schnitt durch eine Handwerkzeugmaschine, deren Werkzeug eine oszillierende Dreh- bzw.1 shows a section through a hand tool, the tool an oscillating rotary or

Pendelschwingung zum Sägen und/oder Schleifen ausübt, wobei das Werkzeug an einer Abtriebswelle gehalten ist, die parallel zu einer elektromotorisch angetriebenen Antriebswelle steht,Pendulum vibration for sawing and / or grinding exercises, wherein the tool is held on an output shaft which is parallel to an electric motor driven drive shaft,

Fig. 2 die Handwerkzeugmaschine in einer perspektivischen Darstellung,2 shows the hand tool in a perspective view,

Fig. 3 die Exzenterkoppeleinrichtung in Einzeldarstellung, über die die Drehbewegung der elektromotorisch angetriebenen Antriebswelle in die Drehpendelbewegung der das Werkzeug tragenden Abtriebswelle umgesetzt wird.Fig. 3, the eccentric coupling device in a single representation, via which the rotational movement of the electric motor-driven drive shaft is converted into the rotational pendulum movement of the tool-carrying output shaft.

In den Figuren sind gleiche Bauteile mit gleichen Bezugszeichen versehen .In the figures, the same components are provided with the same reference numerals.

Die in Fig. 1 dargestellte Handwerkzeugmaschine 1 weist in einem Gehäuse 9 einen elektrischen Antriebsmotor 2 auf, bestehend aus einem gehäusefesten Stator 3 und einem Anker bzw. Rotor 4, an dem drehfest und koaxial eine Antriebswelle 5 angeordnet ist. Die Drehbewegung der Antriebwelle 5 wird über eine Exzenterkoppeleinrichtung 8 auf eine Abtriebswelle 6 übertragen, die ein Werkzeug 7 trägt. Mittels der Exzenterkoppeleinrichtung 8 wird die rotierende Bewegung der Antriebswelle 5 in eine Drehpendelbewegung der Abtriebswelle 6 übertragen.The hand tool 1 shown in FIG. 1 has in a housing 9 an electric drive motor 2, consisting of a housing-fixed stator 3 and an armature or rotor 4, on the rotatably and coaxially a drive shaft 5 is arranged. The rotational movement of the drive shaft 5 is transmitted via an eccentric coupling 8 to an output shaft 6, which carries a tool 7. By means of the eccentric coupling 8, the rotary movement of the drive shaft 5 is transmitted in a rotary pendulum movement of the output shaft 6.

Antriebswelle 5 und Abtriebswelle 6 und damit auch die jeweiligen Drehachsen 10 bzw. 11 liegen parallel zueinander im Gehäuse 9. Um eine in Achsrichtung kurz bauende Vorrichtung zu erhalten, erstreckt sich die Abtriebswelle 6 in Achsrichtung gesehen bis in Höhe des Stators 3 des elektrischen Antriebsmotors 2. Man erhält dadurch in Achsrichtung eine teilweise Überdeckung von Abtriebswelle 6 und Stator 3. Die das Werkzeug 7 tragende Stirnseite der Abtriebswelle 6 ragt geringfügig axial aus dem Gehäuse 9 hervor. Die Abtriebswelle 6 überdeckt sich in Achsrichtung gesehen etwa zur Hälfte ihrer Länge mit dem Stator 3.Drive shaft 5 and output shaft 6 and thus also the respective axes of rotation 10 and 11 are parallel to each other in the housing 9. In order to obtain a short construction in the axial direction device, the output shaft 6 extends in the axial direction This results in the axial direction, a partial overlap of the output shaft 6 and stator 3. The tool 7 bearing end side of the output shaft 6 protrudes slightly axially from the housing 9. The output shaft 6 overlaps in the axial direction approximately half its length with the stator. 3

Die Exzenterkoppeleinrichtung besteht aus einer Koppelgabel 12, die drehfest mit der Abtriebswelle 6 verbunden ist, und einem Exzenternocken 13, der drehfest mit der Antriebswelle 5 verbunden ist, wobei die Koppelgabel 12 an der Kontur des Exzenternockens 13 anliegt, so dass die bezogen auf die Drehachse 10 der Antriebswelle 5 exzentrischen Bewegung des Exzenternockens 13 von der Koppelgabel 12 abgetastet und in eine oszillierende Pendelbewegung um die Drehachse 11 der Abtriebswelle 6 umgesetzt werden kann. DieThe Exzenterkoppeleinrichtung consists of a coupling fork 12 which is rotatably connected to the output shaft 6, and an eccentric cam 13 which is rotatably connected to the drive shaft 5, wherein the coupling fork 12 abuts the contour of the eccentric cam 13, so that with respect to the axis of rotation 10 of the drive shaft 5 eccentric movement of the eccentric cam 13 can be scanned by the coupling fork 12 and converted into an oscillating pendulum motion about the axis of rotation 11 of the output shaft 6. The

Exzenterkoppeleinrichtung 8 liegt benachbart zu Drehlagern 14 bzw. 15, über die die Antriebswelle 5 bzw. die Abtriebswelle 6 an ihrer dem Werkzeug 7 zugewandten Stirnseite drehbar im Gehäuse 9 gelagert sind. Die Bauteile derEccentric coupling device 8 is adjacent to pivot bearings 14 and 15, via which the drive shaft 5 and the output shaft 6 are rotatably mounted in its housing 9 at its front side facing the tool 7. The components of the

Exzenterkoppeleinrichtung 8, also die Koppelgabel 12 und der Exzenternocken 13, befinden sich somit benachbart zu der dem Werkzeug 7 zugewandten Stirnseite der jeweiligen Wellen.Eccentric coupling 8, ie the coupling fork 12 and the eccentric cam 13, are thus adjacent to the tool 7 facing end side of the respective waves.

Wie Fig. 2 und insbesondere Fig. 3 zu entnehmen, weist die Koppelgabel 12 als Bestandteil der Exzenterkoppeleinrichtung 8 zwei Gabelzinken 12a und 12b auf, die die Kontur des Exzenternockens 13 umfassen. Der Abschnitt zwischen den Gabelzinken 12a und 12b ist zweckmäßig teilkreisförmig ausgebildet und an die Kreisform des Exzenternockens 13 angepasst, so dass über einen Winkelabschnitt eine flächige Anlage zwischen der Koppelgabel 12 und der Außenkontur des Exzenternockens 13 gegeben ist. As can be seen in FIG. 2 and in particular in FIG. 3, the coupling fork 12, as part of the eccentric coupling device 8, has two fork tines 12 a and 12 b, which comprise the contour of the eccentric cam 13. The section between the fork tines 12a and 12b is expediently part-circular in shape and adapted to the circular shape of the eccentric cam 13, so that an areal contact between the coupling fork 12 and the outer contour of the eccentric cam 13 is given over an angular section.

Claims

Ansprüche claims 1. Motorisch angetriebene Werkzeugmaschine, insbesondere Handwerkzeugmaschine (1) mit drehbar anzutreibendem Werkzeug1. Motor-driven machine tool, in particular hand tool (1) with rotatably driven tool (7), mit einer von einer Antriebseinheit (2) angetriebenen Antriebswelle (5) und einer Abtriebswelle (6), auf der das Werkzeug (7) aufgenommen ist, wobei die Drehbewegung der Antriebswelle (5) über eine Koppeleinrichtung (8) auf die Abtriebswelle (6) übertragbar ist, dadurch gekennzeichnet, dass Antriebs- und Abtriebswelle (5, 6) parallel zueinander angeordnet sind, wobei die Abtriebswelle (6) zumindest teilweise in Höhe der und parallel zur Antriebseinheit (2) verläuft.(7), with one of a drive unit (2) driven drive shaft (5) and an output shaft (6) on which the tool (7) is accommodated, wherein the rotational movement of the drive shaft (5) via a coupling device (8) on the Output shaft (6) is transferable, characterized in that the drive and output shafts (5, 6) are arranged parallel to each other, wherein the output shaft (6) extends at least partially in the amount of and parallel to the drive unit (2). 2. Werkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Koppeleinrichtung als Exzenterkoppeleinrichtung (8) ausgebildet ist, über die die2. Machine tool according to claim 1, characterized in that the coupling device is designed as an eccentric coupling device (8) via which the Drehbewegung der Antriebswelle (5) in eine Pendelbewegung der Abtriebswelle (6) übertragbar ist.Rotary movement of the drive shaft (5) in a pendulum movement of the output shaft (6) is transferable. 3. Werkzeugmaschine nach Anspruch 2, dadurch gekennzeichnet, dass die Exzenterkoppeleinrichtung (8) ein Koppelglied (12) und ein Exzenterglied (13) , das auf einer der Wellen (5, 6) sitzt, umfasst, wobei das Koppelglied (12) mit dem Exzenterglied (13) in Wirkverbindung steht.3. Machine tool according to claim 2, characterized in that the eccentric coupling device (8) comprises a coupling member (12) and an eccentric member (13) which sits on one of the shafts (5, 6), wherein the coupling member (12) with the Eccentric member (13) is in operative connection. 4. Werkzeugmaschine nach Anspruch 3, dadurch gekennzeichnet, dass das Exzenterglied als fest mit der Antriebswelle (5) verbundener Exzenternocken (13) ausgebildet ist und dass das Koppelglied (12) an der Kontur des Exzenternockens (13) anliegt.4. Machine tool according to claim 3, characterized in that the eccentric member as fixed to the drive shaft (5) connected eccentric cam (13) is formed and that the coupling member (12) rests against the contour of the eccentric cam (13). 5. Werkzeugmaschine nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Koppelglied (12) gabelförmig ausgeführt ist, wobei die Gabelzinken (12a, 12b) das Exzenterglied (13) umgreifen.5. Machine tool according to claim 3 or 4, characterized in that the coupling member (12) is fork-shaped, wherein the fork tines (12a, 12b) engage around the eccentric member (13). 6. Werkzeugmaschine nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass der Exzenternocken (13) sowie der am Exzenternocken anliegende Abschnitt des Koppelgliedes (12) jeweils eine zumindest teilkreisförmige Kontur aufweisen und wenigstens annähernd linienförmig bzw. flächig aneinander liegen.6. Machine tool according to claim 4 or 5, characterized in that the eccentric cam (13) and the voltage applied to the eccentric cam portion of the coupling member (12) each have an at least part-circular contour and lie at least approximately linear or flat to each other. 7. Werkzeugmaschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass ein Bauteil (12) der Koppeleinrichtung (8) benachbart zu dem Werkzeug (7) auf der Abtriebswelle (6) angeordnet ist.7. Machine tool according to one of claims 1 to 6, characterized in that a component (12) of the coupling device (8) adjacent to the tool (7) on the output shaft (6) is arranged. 8. Werkzeugmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Antriebseinheit (2) als Elektromotor ausgeführt und der Stator (3) des Elektromotors (2) auf der dem Werkzeug (7) abgewandten Seite im Gehäuse (9) der Werkzeugmaschine (1) angeordnet ist. 8. Machine tool according to one of claims 1 to 7, characterized in that the drive unit (2) designed as an electric motor and the stator (3) of the electric motor (2) on the tool (7) facing away in the housing (9) of the machine tool (1) is arranged.
EP08716952.0A 2007-04-19 2008-02-19 Motor-driven machine tool Not-in-force EP2139654B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007018465A DE102007018465A1 (en) 2007-04-19 2007-04-19 Motor driven machine tool
PCT/EP2008/052011 WO2008128802A1 (en) 2007-04-19 2008-02-19 Motor-driven machine tool

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EP2139654A1 true EP2139654A1 (en) 2010-01-06
EP2139654B1 EP2139654B1 (en) 2014-04-09

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US (1) US8096856B2 (en)
EP (1) EP2139654B1 (en)
CN (1) CN101663140B (en)
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WO (1) WO2008128802A1 (en)

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Also Published As

Publication number Publication date
DE102007018465A1 (en) 2008-10-23
EP2139654B1 (en) 2014-04-09
CN101663140B (en) 2012-11-28
CN101663140A (en) 2010-03-03
US20100003906A1 (en) 2010-01-07
WO2008128802A1 (en) 2008-10-30
US8096856B2 (en) 2012-01-17

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