EP3411191B1 - Portable power tool having a tool change magazine - Google Patents

Portable power tool having a tool change magazine Download PDF

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Publication number
EP3411191B1
EP3411191B1 EP17700528.7A EP17700528A EP3411191B1 EP 3411191 B1 EP3411191 B1 EP 3411191B1 EP 17700528 A EP17700528 A EP 17700528A EP 3411191 B1 EP3411191 B1 EP 3411191B1
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EP
European Patent Office
Prior art keywords
tool
receptacle
internal
magnet
portable power
Prior art date
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Active
Application number
EP17700528.7A
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German (de)
French (fr)
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EP3411191A1 (en
Inventor
Simon Erbele
Daniel Boepple
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP3411191A1 publication Critical patent/EP3411191A1/en
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    • 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

Definitions

  • the present invention relates to a hand-held power tool with a tool holder designed to receive an insert tool provided with an outer profile, which has an inner holder provided at least in sections with an inner profile, and with a tool housing, to which a tool changing magazine with at least one tool chamber for storing the insert tool is assigned, which can be aligned with the tool holder in order to enable the insert tool to be pushed from the tool chamber into the inner holder or from the inner holder into the tool chamber, a positioning device for circumferentially aligning the outer profile when the insert tool is pushed from the tool chamber into the inner holder of the tool holder for manufacture an interlocking connection, which is at least substantially free of rotational play, is provided between the inner profile and the outer profile.
  • hand-held screwdrivers with an integrated, eg drum-like bit magazine for holding a larger number of different screwdriver bits are known.
  • Such screwdrivers have a rotationally driven tool holder for receiving the screwdriver bits stored in the bit magazine, which are each provided with an external hexagon, for example.
  • a corresponding external hexagon of a rotary drive of a screwdriver bit to be supplied from the bit magazine of the tool holder as independently of a respective rotary position of the tool holder as possible by a purely translational displacement movement on the part of the user without jamming, that is to say resistance-free, that is
  • Tool holder of the screwdriver equipped with a multi-ribbed rotary driver profile.
  • the present invention relates to a hand-held power tool with a tool holder designed to receive an insert tool provided with an outer profile, which has an inner holder provided at least in sections with an inner profile, and with a tool housing, to which a tool changing magazine with at least one tool chamber for storing the insert tool is assigned, which can be aligned with the tool holder in order to allow the insert tool to be pushed from the tool chamber into the inner holder or from the inner holder into the tool chamber.
  • a positioning device is provided for the circumferential alignment of the outer profile when the insert tool is pushed over from the tool chamber into the inner receptacle of the tool receptacle, in order to produce an interlocking connection between the inner profile and the outer profile that is at least essentially free of rotational play.
  • the positioning device has at least one magnet which is intended to align the insert tool relative to the inner profile when it is inserted into the inner receptacle.
  • an always tilt-free, resistance-free insertion of the insert tool into the tool holder is guaranteed, regardless of its circumferential starting position within the tool chamber.
  • a seat of the screwdriver bit, which is subject to rotational play, in the tool holder which among other things results in a reduced quality impression of the screwdriver, can at least largely be prevented.
  • an undesired limitation of a maximum torque that can be transmitted between the tool holder and a corresponding screwdriver bit can be increased and a time delay when the direction of rotation of the insert tool is changed due to the at least substantially rotational play-free interlocking connection can be effectively prevented.
  • the magnet allows the circumferential alignment of an insert tool without mechanically moving components, such as spring elements or the like.
  • the Insert tool is preferably formed with a magnetic material for this purpose.
  • the outer profile of the insert tool is an outer polygon and the inner profile of the inner receptacle is an inner polygon.
  • the external polygon is preferably an external hexagon and the internal polygon is an internal hexagon.
  • the inner polygon is preferably formed at least in sections in a sleeve-shaped tool receiving section of the tool holder, and the at least one magnet of the positioning device is arranged in the sleeve-shaped tool receiving section.
  • the inner polygon preferably has a centering section.
  • This provides radial centering of the insert tool when it is inserted into the tool holder.
  • At least one radially inwardly directed magnetic surface of the at least one magnet and at least one polygonal surface of the outer polygon are at least partially parallel to one another in the at least partially inserted state of the insert tool.
  • the insertion position once reached by means of the magnetic positioning device is permanently maintained regardless of changes in position of the hand-held power tool, vibrations or the like.
  • the at least one magnetic surface and the at least one polygonal surface of the outer polygon of the insert tool are circumferentially offset from one another by a maximum of 20 ° when the at least one magnet is reached by the polygonal surface.
  • the at least one magnetic surface and the at least one polygonal surface of the outer polygon of the insert tool are preferably spaced apart by a maximum of 2 mm.
  • the positioning device has at least one further magnet which is offset with respect to a longitudinal central axis of the insert tool by an angle of not equal to 60 ° or not equal to a multiple of 60 ° with respect to the at least one magnet.
  • the at least one magnet of the positioning device is formed with a permanent magnet or with a magnetized area of the sleeve-like tool holding area.
  • the insert tool can preferably be pushed from the tool chamber into the inner receptacle of the tool receptacle and from the inner receptacle back into the tool chamber by means of a push-over mechanism, in particular a push rod.
  • the tool changing mechanism can be operated intuitively by an operator.
  • a free end section of the push rod facing the insert tool is preferably magnetized.
  • the at least one magnet is preferably provided for rotating the insert tool about a longitudinal central axis of the insert tool such that the cross section of the outer profile of the insert tool is completely arranged within the inner profile of the inner holder when the insert tool is inserted into the inner holder.
  • Fig. 1 shows an example of a manually operated, motor-driven machine tool 100, which is also referred to below as a "hand tool”.
  • This preferably has a tool housing 111 in which a tool change magazine 120 is arranged.
  • the tool changing magazine 120 is drum-shaped and rotatable about an axis of rotation 103.
  • the tool changing magazine 120 is designed in the shape of a hollow cylinder with an annular jacket body 102 in which a multiplicity of tool chambers are provided.
  • insert tools may be arranged, z. B. different insert tools can be provided in all tool chambers.
  • Fig. 1 only a single tool chamber indicated and identified by the reference number 199.
  • an insert tool 101 is arranged as an example, which is designed here as an example as a screwdriver bit.
  • the handheld power tool 100 is illustratively designed in the manner of a so-called "bit screwdriver" for the convenient handling of so-called “screwdriver bits”.
  • bit screwdriver for the convenient handling of so-called "screwdriver bits”.
  • the present invention is not restricted to such bit screwdrivers, but rather can be used in all machine tools in which a tool changing magazine, in particular a drum-like tool changing magazine which can be rotated about a longitudinal axis, can be used, regardless of this, whether screwdriver bits or other changeable objects are stored in the tool changing magazine or whether the machine tool can be held or operated by hand or not.
  • a tool holder 200 for receiving the insert tool 101 is arranged on the tool housing 111, illustratively, around an associated one Axis of rotation 188 or a longitudinal central axis is rotatable.
  • the tool holder 200 for driving the insert tool 101 is coupled via a gear toothing 106 to an output shaft 119 of a gear 112, which is arranged, for example, in a gear housing 114.
  • a drive gear 179 is illustratively provided on the output shaft 119, which cooperates in the gear toothing 106 with an output gear 202 provided on the tool holder 200.
  • the output shaft 119 is rotatably driven, for example, by a motor shaft 177 of a drive motor 107 coupled to the gear 112, which is arranged, for example, in an associated motor housing 117, the motor housing 117 and the gear housing 114 being arranged and fastened, for example, in the tool housing 111.
  • the tool holder 200 has, among other things, an inner holder 210 provided with an inner profile 152.
  • the inner profile 152 of the inner receptacle 210 is, for example, an inner polygon 153 and an outer profile 151 of the insert tool 101 is realized with an exemplary outer polygon 154 designed to correspond to the inner polygon 153, which is configured rotationally symmetrically to a longitudinal central axis 189 of the insert tool 101.
  • the internal polygon 153 is preferably an internal hexagon, the center axis of which corresponds to the axis of rotation 188, and is therefore also referred to below as the “internal hexagon 153”, while the external polygon 154 is preferably an external hexagon and is therefore also referred to below as the “external hexagon 154”.
  • the hexagon socket 153 is preferably arranged at least in sections in a sleeve-shaped tool receiving section 211 of the inner receptacle 210, into which the external hexagon 154 of the insert tool 101 can be inserted axially when the same is pushed out of the tool chamber 199 to produce a preferably substantially backlash-free positive locking connection with the tool holder 200.
  • the tool chamber 199 is preferably to be aligned such that the rotational or center axis 188 is aligned with the longitudinal center axis 189 of the insert tool 101.
  • a pushing mechanism 110 To push the insert tool 101 out of the tool chamber 199 into the inner receptacle 210 of the tool receptacle 200 and for pushing it out of the inner receptacle 210 into the tool chamber 199 is a pushing mechanism 110 provided.
  • This has a push-over element 108 which is designed, for example, in the manner of a push rod 109 which can be actuated via an actuating element 122.
  • This is guided axially, for example, in a guide 116 provided on the transmission housing 114 (cf. in particular Fig. 5 ).
  • the push rod 109 At its axial end facing the insert tool 101, the push rod 109 is preferably magnetically designed for magnetic connection to the insert tool 101.
  • the actuating element 122 is preferably axially displaceable in an opening 113 provided on the tool housing 111 parallel to the axis of rotation 188 of the tool holder 200 or the longitudinal center axis 189 of the insert tool 101.
  • non-parallel displaceability can also be implemented.
  • the tool changing magazine 120 is preferably rotated about the axis of rotation 103 into a tool changing position in which, for example, the tool chamber 199 is aligned with the insert tool 101 with the tool holder 200 or with its inner holder 210. Then the actuating element 122 is in the direction of an arrow 167 in the opening 113 from its in Fig. 1 moved rear axial end position to a front axial end position, in which the push rod 109 extends through the tool chamber 199 and blocks the insert tool 101 in the inner receptacle 210 of the tool holder 200. In order to push the tool 101 out of the tool holder 200 into the tool chamber 199, the actuating element 122 is then axially displaced back to its rear axial end position in the opening 113 in a direction opposite to the arrow 167.
  • Fig. 2 shows the tool holder 200 of Fig. 1 when the insert tool 101 is pushed in the direction of an arrow 267 into the axis of rotation 188 or the longitudinal center axis 189 rotatable and the sleeve-shaped tool receiving portion 211 having tool holder 200.
  • the tool holder 200 illustratively has the output gear 202 of a first axial end region 201 Fig. 1 while the hexagon socket 153 of the inner profile 152 of the inner receptacle 210 is located on an opposite, second axial end region 203, which is preferably used for receiving the outer profile 151 of the insert tool 101, which is embodied as an outer hexagon 154, essentially without rotational play.
  • the tool holder 200 preferably merges in the region of a first shoulder 217 of the driven gear 202 into a first tapered region 216, which preferably merges with the tool holder section 211 on a second shoulder 215.
  • a roller bearing 270 designed in the manner of a needle bearing for the rotatable mounting of the tool holder 200 in the tool housing 111 (cf. Fig. 1 ) arranged.
  • the roller bearing 270 is, for example, fixed axially immovably between the first tapered region 216 and a blocking disk 260.
  • the blocking disk 260 is in turn blocked by a locking ring 250, for example a C-ring, which is preferably fastened in an annular groove 214 formed on the tool receiving section 211, in the axial direction of the tool holder 200.
  • the hexagon socket 153 of the inner profile 152 of the inner receptacle 210 preferably has an illustratively conical or wedge-shaped beveled centering section 156 which is directed away from the second axial end region 203. This preferably serves to radially center the insert tool 101 when it is inserted into the tool receptacle 200.
  • the sleeve-shaped tool receiving section 211 preferably has a magnetic positioning device 300 in an axial region between the securing ring 250 and the centering section 156, which is used to align the outer profile 151 of the insert tool 101 on the circumferential side when it is pushed into the inner receptacle 210, thereby creating a preferably substantially backlash-free positive connection between the inner profile 152 or the internal hexagon 153 and the outer profile 151 or the external hexagon 154.
  • the positioning device 300 has for this purpose preferably via at least one magnet 310, which is provided to align the insert tool 101 relative to the inner profile 152 when inserted into the inner receptacle 210.
  • the at least one magnet 310 is preferably designed to preferably rotate the insert tool 101 about its longitudinal central axis 189 to such an extent that a cross section of the outer profile 151 of the insert tool 101 lies completely inside the inner profile 152 when the latter is inserted axially into the inner receptacle 210 or is congruent this is.
  • At least one radially inward magnetic surface 312 and at least one hexagonal surface 158 of the insert tool 101 are in the state at least partially inserted into the inner receptacle 210 (cf. in particular Fig. 3 ) of the insert tool 101 preferably at least in regions.
  • centering section 156 is merely optional, so that in an alternative implementation it is not necessary to provide this centering section 156. This is e.g. with a sufficiently precise positioning of the at least one magnet 310 in the sleeve-shaped tool receiving section 211 the case.
  • the preferably flat magnetic surface 312 running parallel to the axis of rotation 188 or the longitudinal central axis 189 and the hexagonal surface 158 are preferably spaced apart by a radial distance 314 of a maximum of 2 mm in order, inter alia, to reliably ensure a sufficient force effect of the magnet 310 on the insert tool 101 to ensure.
  • the one magnetic surface 312 and the at least one hexagonal surface 158 of the external hexagon 154 of the insert tool 101 are preferably offset circumferentially from one another by a maximum of 20 ° when axially approaching the magnets 310.
  • the magnet 310 preferably has a centering surface 316 which is inclined at an angle of, for example, approximately 45 ° with respect to the axis of rotation 188 or the longitudinal center axis 189 and which faces in the direction of the first axial end region 201 and thus the axial insertion of the insert tool 101 further facilitated in the tool holder 200.
  • the positioning device 300 can furthermore have one or more further magnets 320 which, in relation to the axis of rotation 188 or the longitudinal center axis 189 of the tool holder 200, are only indicated by a drawing Angle ⁇ of preferably not equal to 60 ° or not equal to a multiple thereof is or are circumferentially offset with respect to the magnet 310.
  • the positioning device 300 can have at least one further, axially displaceable magnet 325 for further optimization of the insertion process of the insert tool 101 into the tool holder 200.
  • This axially displaceable magnet 325 can preferably move in the axial direction of the tool holder 200 at least a short distance 190 together with the insert tool 101 to be inserted into the tool holder 200, so that the correct circumferential position of the insert tool 101 in relation to the inner holder 210 for a longer displacement path is maintained.
  • the magnets 310, 320, 325 can be formed integrally with permanent magnets as separate components and / or with magnetized areas of the sleeve-shaped tool receiving section 211, provided that the latter is made with a ferromagnetic material.
  • the rare earth permanent magnets are preferably made by sintering, etc.
  • a magnetized area 335 is designated to represent all the others.
  • Fig. 3 shows the tool holder 200 of Fig. 2 with the insert tool 101 from Fig. 1 after the complete axial insertion of the insert tool 101 into the inner receptacle 210 of the tool receptacle 200.
  • the outer profile 151 or the external hexagon 154 of the insert tool 101 is preferably free of backlash, but at least largely free of backlash in the inner profile 152 or the by means of a positive connection Hexagon socket 153 of the tool receiving section 211 received.
  • Fig. 4 shows the external profile 151 or the external hexagon 154 of the insert tool 101 as it is pushed past the magnet 310 of the positioning device 300, as a result of which the insert tool 101 is rotated about its longitudinal central axis 189 in such a way that the magnetic surface 312 preferably abuts the hexagon surface 158 over the full area and thus a cross section 160 of the Outer profile 151 of the insert tool 101 is congruently aligned with a cross section 162 of the inner profile 152 of the tool holder 210.
  • the application tool 101 is practically resistance-free, while at the same time creating an essentially rotational play-free positive connection with the inner receptacle 210 of the tool receptacle 200 by means of the push-over mechanism of FIG Fig. 1 can be inserted into these.
  • the hexagon socket 153 is formed axially at least in sections in the sleeve-shaped tool holding section 211 of the inner holder 210 of the tool holder 200.
  • the centering section 156 in the tool holder 210 which funnel-shaped or conically widens, serves to further optimize the pushing-over process in the opposite direction to the insertion direction of the insert tool 101, which is indicated by an arrow.
  • Fig. 5 shows the tool holder 200 of Fig. 4 with a push rod 109 as part of a push mechanism (see esp. Fig. 1 ).
  • This push rod 109 is preferably magnetized in the area 335 of its free end 124 or has a magnet 330 or a magnetized area at its free end 124, as a result of which an axial connection between the insert tool 101 and which is mechanically sufficiently resilient, but easily detachable if necessary the push rod 109 is given.
  • the insert tool 101 can also be easily pulled out of the inner receptacle 210 by means of the push rod 109 to carry out a change of the insert tool 101.
  • the magnet 330 or the magnetized area 335 are preferably formed centrally to the longitudinal central axis 189 of the insert tool 101 within the free end 124 of the push rod 109.
  • the magnet 330 can be designed as a separate component and can be suitably fastened in the free end 124 of the push rod 109, for example by pressing in, thermal shrinking, gluing, caulking, etc. If the push rod 109 is formed with a ferromagnetic material, the free end 124 can also itself be magnetized.
  • the insert tool 101 is located in FIG Fig. 5 illustratively again in the axial direction shortly before the state fully inserted into the tool holder 200, in the state between the external hexagon 154 of the insert tool 101 and the internal hexagon 153 of the tool holder section 211 of the inner holder 210 of the tool holder 200 there is a form-fit connection that is essentially free of rotational play.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Manipulator (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)

Description

Stand der TechnikState of the art

Die vorliegende Erfindung betrifft eine Handwerkzeugmaschine mit einer zur Aufnahme eines mit einem Außenprofil versehenen Einsatzwerkzeugs ausgebildeten Werkzeugaufnahme, die eine zumindest abschnittsweise mit einem Innenprofil versehene Innenaufnahme aufweist, und mit einem Werkzeuggehäuse, dem ein Werkzeugwechselmagazin mit mindestens einer Werkzeugkammer zur Aufbewahrung des Einsatzwerkzeugs zugeordnet ist, die mit der Werkzeugaufnahme fluchtend ausrichtbar ist, um ein Überschieben des Einsatzwerkzeugs von der Werkzeugkammer in die Innenaufnahme oder von der Innenaufnahme in die Werkzeugkammer zu ermöglichen, wobei eine Positioniereinrichtung zum umfangsseitigen Ausrichten des Außenprofils beim Überschieben des Einsatzwerkzeugs von der Werkzeugkammer in die Innenaufnahme der Werkzeugaufnahme zum Herstellen einer zumindest im Wesentlichen drehspielfreien Formschlussverbindung zwischen dem Innenprofil und dem Außenprofil vorgesehen ist.The present invention relates to a hand-held power tool with a tool holder designed to receive an insert tool provided with an outer profile, which has an inner holder provided at least in sections with an inner profile, and with a tool housing, to which a tool changing magazine with at least one tool chamber for storing the insert tool is assigned, which can be aligned with the tool holder in order to enable the insert tool to be pushed from the tool chamber into the inner holder or from the inner holder into the tool chamber, a positioning device for circumferentially aligning the outer profile when the insert tool is pushed from the tool chamber into the inner holder of the tool holder for manufacture an interlocking connection, which is at least substantially free of rotational play, is provided between the inner profile and the outer profile.

Aus dem Stand der Technik, beispielsweise DE 20 2011 110 185 U1 , sind handgeführte Schrauber mit einem integrierten, z.B. trommelartigen Bitmagazin zum Bereithalten einer größeren Anzahl unterschiedlicher Schrauberbits bekannt. Derartige Schrauber verfügen über eine rotatorisch angetriebene Werkzeugaufnahme zur Aufnahme der in dem Bitmagazin bevorrateten Schrauberbits, die jeweils z.B. mit einem Außensechskant versehen sind. Um einen entsprechenden Außensechskant einer Drehmitnahme eines aus dem Bitmagazin der Werkzeugaufnahme zuzuführenden Schrauberbits möglichst unabhängig von einer jeweiligen Drehstellung der Werkzeugaufnahme durch eine rein translatorische Verschiebebewegung seitens des Benutzers verkantungsfrei, d.h. widerstandsfrei, in die Werkzeugaufnahme einführen zu können, ist dieFrom the prior art, for example DE 20 2011 110 185 U1 , hand-held screwdrivers with an integrated, eg drum-like bit magazine for holding a larger number of different screwdriver bits are known. Such screwdrivers have a rotationally driven tool holder for receiving the screwdriver bits stored in the bit magazine, which are each provided with an external hexagon, for example. In order to be able to insert a corresponding external hexagon of a rotary drive of a screwdriver bit to be supplied from the bit magazine of the tool holder as independently of a respective rotary position of the tool holder as possible by a purely translational displacement movement on the part of the user without jamming, that is to say resistance-free, that is

Werkzeugaufnahme des Schraubers mit einem mehrfach längsgerippten Drehmitnehmerprofil ausgestattet.Tool holder of the screwdriver equipped with a multi-ribbed rotary driver profile.

Offenbarung der ErfindungDisclosure of the invention

Die vorliegende Erfindung betrifft eine Handwerkzeugmaschine mit einer zur Aufnahme eines mit einem Außenprofil versehenen Einsatzwerkzeugs ausgebildeten Werkzeugaufnahme, die eine zumindest abschnittsweise mit einem Innenprofil versehene Innenaufnahme aufweist, und mit einem Werkzeuggehäuse, dem ein Werkzeugwechselmagazin mit mindestens einer Werkzeugkammer zur Aufbewahrung des Einsatzwerkzeugs zugeordnet ist, die mit der Werkzeugaufnahme fluchtend ausrichtbar ist, um ein Überschieben des Einsatzwerkzeugs von der Werkzeugkammer in die Innenaufnahme oder von der Innenaufnahme in die Werkzeugkammer zu ermöglichen. Eine Positioniereinrichtung ist zum umfangsseitigen Ausrichten des Außenprofils beim Überschieben des Einsatzwerkzeugs von der Werkzeugkammer in die Innenaufnahme der Werkzeugaufnahme zum Herstellen einer zumindest im Wesentlichen drehspielfreien Formschlussverbindung zwischen dem Innenprofil und dem Außenprofil vorgesehen. Die Positioniereinrichtung weist mindestens einen Magneten auf, der dazu vorgesehen ist, das Einsatzwerkzeug beim Einschieben in die Innenaufnahme relativ zum Innenprofil auszurichten.The present invention relates to a hand-held power tool with a tool holder designed to receive an insert tool provided with an outer profile, which has an inner holder provided at least in sections with an inner profile, and with a tool housing, to which a tool changing magazine with at least one tool chamber for storing the insert tool is assigned, which can be aligned with the tool holder in order to allow the insert tool to be pushed from the tool chamber into the inner holder or from the inner holder into the tool chamber. A positioning device is provided for the circumferential alignment of the outer profile when the insert tool is pushed over from the tool chamber into the inner receptacle of the tool receptacle, in order to produce an interlocking connection between the inner profile and the outer profile that is at least essentially free of rotational play. The positioning device has at least one magnet which is intended to align the insert tool relative to the inner profile when it is inserted into the inner receptacle.

Infolgedessen ist ein stets verkantungsfreies, widerstandsfreies Einführen des Einsatzwerkzeugs in die Werkzeugaufnahme, unabhängig von dessen umfangsseitiger Ausgangsstellung innerhalb der Werkzeugkammer, gewährleistet. Hierbei kann ein drehspielbehafteter Sitz des Schrauberbits in der Werkzeugaufnahme, der unter anderem eine verringerte Qualitätsanmutung des Schraubers zur Folge hat, zumindest weitgehend verhindert werden. Darüber hinaus kann eine ungewünschte Begrenzung eines maximal zwischen der Werkzeugaufnahme und einem entsprechenden Schrauberbit übertragbaren Drehmoments erhöht sowie eine zeitliche Verzögerung bei einem Wechsel der Drehrichtung des Einsatzwerkzeugs auf Grund der zumindest im Wesentlichen drehspielfreien Formschlussverbindung wirksam verhindert werden. Des Weiteren kommt durch den Magneten die umfangsseitige Ausrichtung eines Einsatzwerkzeugs ohne mechanisch bewegte Komponenten, wie Federelemente oder dergleichen, aus. Das Einsatzwerkzeug ist zu diesem Zweck bevorzugt mit einem magnetischen Material gebildet.As a result, an always tilt-free, resistance-free insertion of the insert tool into the tool holder is guaranteed, regardless of its circumferential starting position within the tool chamber. In this case, a seat of the screwdriver bit, which is subject to rotational play, in the tool holder, which among other things results in a reduced quality impression of the screwdriver, can at least largely be prevented. In addition, an undesired limitation of a maximum torque that can be transmitted between the tool holder and a corresponding screwdriver bit can be increased and a time delay when the direction of rotation of the insert tool is changed due to the at least substantially rotational play-free interlocking connection can be effectively prevented. Furthermore, the magnet allows the circumferential alignment of an insert tool without mechanically moving components, such as spring elements or the like. The Insert tool is preferably formed with a magnetic material for this purpose.

Gemäß einer Ausführungsform ist das Außenprofil des Einsatzwerkzeugs ein Außenmehrkant und das Innenprofil der Innenaufnahme ist ein Innenmehrkant. Bevorzugt ist der Außenmehrkant ein Außensechskant und der Innenmehrkant ist ein Innensechskant.According to one embodiment, the outer profile of the insert tool is an outer polygon and the inner profile of the inner receptacle is an inner polygon. The external polygon is preferably an external hexagon and the internal polygon is an internal hexagon.

Infolgedessen kann eine Vielzahl von marktüblichen, standardisierten Einsatzwerkzeugen, wie zum Beispiel bekannte Schrauberbits oder dergleichen, zum Einsatz kommen.As a result, a large number of commercially available, standardized application tools, such as known screwdriver bits or the like, can be used.

Bevorzugt ist der Innenmehrkant zumindest abschnittsweise in einem hülsenförmigen Werkzeugaufnahmeabschnitt der Werkzeugaufnahme ausgebildet, und der mindestens eine Magnet der Positioniereinrichtung ist in dem hülsenförmigen Werkzeugaufnahmeabschnitt angeordnet.The inner polygon is preferably formed at least in sections in a sleeve-shaped tool receiving section of the tool holder, and the at least one magnet of the positioning device is arranged in the sleeve-shaped tool receiving section.

Hierdurch ist bereits ein zuverlässiges, umfangsseitiges Umkippen des Einsatzwerkzeugs in die richtige Einführposition gegeben.This already provides a reliable, circumferential tipping of the insert tool into the correct insertion position.

Vorzugsweise weist der Innenmehrkant einen Zentrierabschnitt auf.The inner polygon preferably has a centering section.

Hierdurch ist eine radiale Zentrierung des Einsatzwerkzeugs beim Einschieben in die Werkzeugaufnahme gegeben.This provides radial centering of the insert tool when it is inserted into the tool holder.

Bei einer weiteren technisch vorteilhaften Ausgestaltung liegen mindestens eine radial einwärts gerichtete Magnetfläche des mindestens einen Magneten und mindestens eine Mehrkantfläche des Außenmehrkants im zumindest teilweise eingeschobenen Zustand des Einsatzwerkzeugs zumindest bereichsweise parallel aneinander.In a further technically advantageous embodiment, at least one radially inwardly directed magnetic surface of the at least one magnet and at least one polygonal surface of the outer polygon are at least partially parallel to one another in the at least partially inserted state of the insert tool.

Aufgrund dieses Umstands bleibt die mittels der magnetischen Positioniereinrichtung einmal erreichte Einführposition unabhängig von Lageveränderungen der Handwerkzeugmaschine, Vibrationen oder dergleichen, dauerhaft erhalten.Because of this, the insertion position once reached by means of the magnetic positioning device is permanently maintained regardless of changes in position of the hand-held power tool, vibrations or the like.

Bevorzugt sind die mindestens eine Magnetfläche und die mindestens eine Mehrkantfläche des Außenmehrkants des Einsatzwerkzeugs beim Erreichen des mindestens einen Magneten durch die Mehrkantfläche umfangsseitig um maximal 20° zueinander versetzt.Preferably, the at least one magnetic surface and the at least one polygonal surface of the outer polygon of the insert tool are circumferentially offset from one another by a maximum of 20 ° when the at least one magnet is reached by the polygonal surface.

Hierdurch ist ein zuverlässiges Verkippen des Einsatzwerkzeugs um seine Längsmittelachse gewährleistet.This ensures reliable tilting of the insert tool about its longitudinal central axis.

Bevorzugt sind die mindestens eine Magnetfläche und die mindestens eine Mehrkantfläche des Außenmehrkants des Einsatzwerkzeugs maximal um 2 mm voneinander beabstandet.The at least one magnetic surface and the at least one polygonal surface of the outer polygon of the insert tool are preferably spaced apart by a maximum of 2 mm.

Auch hierdurch ist ein zuverlässiges Verkippen des Einsatzwerkzeugs um seine Längsmittelachse gewährleistet.This also ensures reliable tilting of the insert tool about its longitudinal central axis.

Gemäß einer Weiterbildung weist die Positioniereinrichtung mindestens einen weiteren Magneten auf, der in Bezug zu einer Längsmittelachse des Einsatzwerkzeugs um einen Winkel von ungleich 60° oder ungleich einem Vielfachen von 60° in Bezug zu dem mindestens einen Magneten versetzt ist.According to a further development, the positioning device has at least one further magnet which is offset with respect to a longitudinal central axis of the insert tool by an angle of not equal to 60 ° or not equal to a multiple of 60 ° with respect to the at least one magnet.

Hierdurch ist eine weitere Optimierung des Verkippens des Einsatzwerkzeugs um seine Längsmittelachse erreichbar.As a result, a further optimization of the tilting of the insert tool about its longitudinal central axis can be achieved.

Bei einer Weiterbildung ist der mindestens eine Magnet der Positioniereinrichtung mit einem Permanentmagneten oder mit einem magnetisierten Bereich des hülsenartigen Werkzeugaufnahmebereichs gebildet.In one development, the at least one magnet of the positioning device is formed with a permanent magnet or with a magnetized area of the sleeve-like tool holding area.

Hierdurch ist eine fertigungstechnisch besonders einfache Integration des Magneten in die Handwerkzeugmaschine gegeben.This results in a particularly simple integration of the magnet into the handheld power tool in terms of production technology.

Bevorzugt ist das Einsatzwerkzeug aus der Werkzeugkammer in die Innenaufnahme der Werkzeugaufnahme und aus der Innenaufnahme zurück in die Werkzeugkammer mittels eines Überschiebemechanismus, insbesondere einer Schiebestange, überschiebbar.The insert tool can preferably be pushed from the tool chamber into the inner receptacle of the tool receptacle and from the inner receptacle back into the tool chamber by means of a push-over mechanism, in particular a push rod.

Infolgedessen ist der Werkzeugwechselmechanismus für einen Bediener intuitiv bedienbar.As a result, the tool changing mechanism can be operated intuitively by an operator.

Vorzugsweise ist ein freier, dem Einsatzwerkzeug zugewandter Endabschnitt der Schiebestange magnetisiert.A free end section of the push rod facing the insert tool is preferably magnetized.

Hierdurch ist eine zuverlässige, jedoch im Bedarfsfall leicht wieder lösbare axiale Kopplung zwischen dem Einsatzwerkzeug und der Schiebestange gegeben.This provides a reliable, but easily releasable axial coupling between the insert tool and the push rod if necessary.

Bevorzugt ist der mindestens eine Magnet dazu vorgesehen, das Einsatzwerkzeug um eine Längsmittelachse des Einsatzwerkzeugs derart zu verdrehen, dass der Querschnitt des Außenprofils des Einsatzwerkzeugs beim Einschieben des Einsatzwerkzeugs in die Innenaufnahme vollständig innerhalb des Innenprofils der Innenaufnahme angeordnet ist.The at least one magnet is preferably provided for rotating the insert tool about a longitudinal central axis of the insert tool such that the cross section of the outer profile of the insert tool is completely arranged within the inner profile of the inner holder when the insert tool is inserted into the inner holder.

Infolgedessen kann der Vorgang des Überschiebens des Einsatzwerkzeugs aus der Werkzeugkammer in die Werkzeugaufnahme weiter verbessert werden.As a result, the process of pushing the insert tool out of the tool chamber into the tool holder can be further improved.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Die Erfindung ist anhand von in den Zeichnungen dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Gleiche oder gleichwirkende Bauteile werden hierbei mit denselben Bezugszeichen versehen und jeweils nur einmal beschrieben. Es zeigen:

Fig. 1
eine schematische, teilweise geschnittene Seitenansicht einer Handwerkzeugmaschine mit einem Werkzeugwechselmagazin und einer Werkzeugaufnahme gemäß einer Ausführungsform,
Fig. 2
eine teilweise geschnittene Seitenansicht der Werkzeugaufnahme von Fig. 1 gemäß einer Ausführungsform,
Fig. 3
eine Schnittansicht der Werkzeugaufnahme von Fig. 2 mit dem darin angeordneten Einsatzwerkzeug von Fig. 1,
Fig. 4
eine vergrößerte, perspektivische Ansicht eines Ausschnitts IV von Fig. 2, und
Fig. 5
die Werkzeugaufnahme von Fig. 4 mit einer Schiebestange als Überschiebemechanismus.
The invention is explained in more detail in the following description with reference to exemplary embodiments shown in the drawings. The same or equivalent components are provided with the same reference numerals and described only once. Show it:
Fig. 1
2 shows a schematic, partially sectioned side view of a hand tool with a tool change magazine and a tool holder according to one embodiment,
Fig. 2
a partially sectioned side view of the tool holder of Fig. 1 according to one embodiment,
Fig. 3
a sectional view of the tool holder of Fig. 2 with the insert tool from Fig. 1 .
Fig. 4
an enlarged, perspective view of a section IV of Fig. 2 , and
Fig. 5
the tool holder of Fig. 4 with a push rod as a push mechanism.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Fig. 1 zeigt eine exemplarisch mit der Hand führbare, motorisch antreibbare Werkzeugmaschine 100, die nachfolgend auch als "Handwerkzeugmaschine" bezeichnet wird. Diese weist bevorzugt ein Werkzeuggehäuse 111 auf, in dem ein Werkzeugwechselmagazin 120 angeordnet ist. Das Werkzeugwechselmagazin 120 ist gemäß einer Ausführungsform trommelartig ausgebildet und um eine Drehachse 103 drehbar. Illustrativ ist das Werkzeugwechselmagazin 120 hohlzylinderförmig mit einem ringartigen Mantelkörper 102 ausgebildet, in dem eine Vielzahl von Werkzeugkammern vorgesehen ist. In den Werkzeugkammern können z. B. Einsatzwerkzeuge angeordnet sein, wobei z. B. in allen Werkzeugkammern unterschiedliche Einsatzwerkzeuge vorgesehen sein können. Zwecks Klarheit und Übersichtlichkeit der Zeichnung ist in Fig. 1 nur eine einzelne Werkzeugkammer angedeutet und mit dem Bezugszeichen 199 gekennzeichnet. In dieser Werkzeugkammer 199 ist beispielhaft ein Einsatzwerkzeug 101 angeordnet, das hier exemplarisch als ein Schrauberbit ausgeführt ist. Fig. 1 shows an example of a manually operated, motor-driven machine tool 100, which is also referred to below as a "hand tool". This preferably has a tool housing 111 in which a tool change magazine 120 is arranged. According to one embodiment, the tool changing magazine 120 is drum-shaped and rotatable about an axis of rotation 103. Illustratively, the tool changing magazine 120 is designed in the shape of a hollow cylinder with an annular jacket body 102 in which a multiplicity of tool chambers are provided. In the tool chambers z. B. insert tools may be arranged, z. B. different insert tools can be provided in all tool chambers. For the sake of clarity and clarity of the drawing is in Fig. 1 only a single tool chamber indicated and identified by the reference number 199. In this tool chamber 199, an insert tool 101 is arranged as an example, which is designed here as an example as a screwdriver bit.

Die Handwerkzeugmaschine 100 ist illustrativ nach Art eines sogenannten "Bit-Schraubers" zur komfortablen Handhabung von sogenannten "Schrauberbits" ausgebildet. Es wird jedoch darauf hingewiesen, dass die vorliegende Erfindung nicht auf derartige Bit-Schrauber eingeschränkt ist, sondern vielmehr bei allen Werkzeugmaschinen Anwendung finden kann, bei denen ein Werkzeugwechselmagazin, insbesondere eine um eine Längsachse drehbares, trommelartiges Werkzeugwechselmagazin, Anwendung finden kann, unabhängig davon, ob in dem Werkzeugwechselmagazin Schrauberbits oder andere Wechselobjekte aufbewahrt werden oder ob die Werkzeugmaschine handhalt- bzw. handführbar ist oder nicht.The handheld power tool 100 is illustratively designed in the manner of a so-called "bit screwdriver" for the convenient handling of so-called "screwdriver bits". However, it is pointed out that the present invention is not restricted to such bit screwdrivers, but rather can be used in all machine tools in which a tool changing magazine, in particular a drum-like tool changing magazine which can be rotated about a longitudinal axis, can be used, regardless of this, whether screwdriver bits or other changeable objects are stored in the tool changing magazine or whether the machine tool can be held or operated by hand or not.

An dem Werkzeuggehäuse 111 ist illustrativ eine Werkzeugaufnahme 200 zur Aufnahme des Einsatzwerkzeugs 101 angeordnet, die um eine zugeordnete Drehachse 188 bzw. eine Längsmittelachse drehbar ist. Illustrativ ist die Werkzeugaufnahme 200 zum Antreiben des Einsatzwerkzeugs 101 über eine Getriebeverzahnung 106 mit einer Abtriebswelle 119 eines Getriebes 112 gekoppelt, das beispielhaft in einem Getriebegehäuse 114 angeordnet ist. Hierzu ist an der Abtriebswelle 119 illustrativ ein Antriebszahnrad 179 vorgesehen, das in der Getriebeverzahnung 106 mit einem an der Werkzeugaufnahme 200 vorgesehenen Abtriebszahnrad 202 zusammenwirkt. Die Abtriebswelle 119 wird z.B. durch eine Motorwelle 177 eines mit dem Getriebe 112 gekoppelten Antriebsmotors 107 drehend angetrieben, der beispielhaft in einem zugeordneten Motorgehäuse 117 angeordnet ist, wobei das Motorgehäuse 117 und das Getriebegehäuse 114 beispielhaft in dem Werkzeuggehäuse 111 angeordnet und befestigt sind.A tool holder 200 for receiving the insert tool 101 is arranged on the tool housing 111, illustratively, around an associated one Axis of rotation 188 or a longitudinal central axis is rotatable. Illustratively, the tool holder 200 for driving the insert tool 101 is coupled via a gear toothing 106 to an output shaft 119 of a gear 112, which is arranged, for example, in a gear housing 114. For this purpose, a drive gear 179 is illustratively provided on the output shaft 119, which cooperates in the gear toothing 106 with an output gear 202 provided on the tool holder 200. The output shaft 119 is rotatably driven, for example, by a motor shaft 177 of a drive motor 107 coupled to the gear 112, which is arranged, for example, in an associated motor housing 117, the motor housing 117 and the gear housing 114 being arranged and fastened, for example, in the tool housing 111.

Die Werkzeugaufnahme 200 weist unter anderem eine mit einem Innenprofil 152 versehene Innenaufnahme 210 auf. Das Innenprofil 152 der Innenaufnahme 210 ist beispielhaft ein Innenmehrkant 153 und ein Außenprofil 151 des Einsatzwerkzeugs 101 ist mit einem korrespondierend zu dem Innenmehrkant 153 ausgeführten, beispielhaften Außenmehrkant 154 realisiert, der rotationssymmetrisch zu einer Längsmittelachse 189 des Einsatzwerkzeugs 101 ausgestaltet ist. Der Innenmehrkant 153 ist bevorzugt ein Innensechskant, dessen Zentrumsachse der Drehachse 188 entspricht, und wird deshalb nachfolgend auch als der "Innensechskant 153" bezeichnet, während der Außenmehrkant 154 bevorzugt ein Außensechskant ist und deshalb nachfolgend auch als der "Außensechskant 154" bezeichnet wird.The tool holder 200 has, among other things, an inner holder 210 provided with an inner profile 152. The inner profile 152 of the inner receptacle 210 is, for example, an inner polygon 153 and an outer profile 151 of the insert tool 101 is realized with an exemplary outer polygon 154 designed to correspond to the inner polygon 153, which is configured rotationally symmetrically to a longitudinal central axis 189 of the insert tool 101. The internal polygon 153 is preferably an internal hexagon, the center axis of which corresponds to the axis of rotation 188, and is therefore also referred to below as the “internal hexagon 153”, while the external polygon 154 is preferably an external hexagon and is therefore also referred to below as the “external hexagon 154”.

Der Innensechskant 153 ist bevorzugt zumindest abschnittsweise in einem hülsenförmigen Werkzeugaufnahmeabschnitt 211 der Innenaufnahme 210 angeordnet, in die der Außensechskant 154 des Einsatzwerkzeugs 101 beim Überschieben desselben aus der Werkzeugkammer 199 zur Herstellung einer vorzugsweise im Wesentlichen drehspielfreien Formschlussverbindung mit der Werkzeugaufnahme 200 axial einschiebbar ist. Hierzu ist die Werkzeugkammer 199 bevorzugt derart rastend auszurichten, dass die Dreh- bzw. Zentrumsachse 188 fluchtend zur Längsmittelachse 189 des Einsatzwerkzeugs 101 ist.The hexagon socket 153 is preferably arranged at least in sections in a sleeve-shaped tool receiving section 211 of the inner receptacle 210, into which the external hexagon 154 of the insert tool 101 can be inserted axially when the same is pushed out of the tool chamber 199 to produce a preferably substantially backlash-free positive locking connection with the tool holder 200. For this purpose, the tool chamber 199 is preferably to be aligned such that the rotational or center axis 188 is aligned with the longitudinal center axis 189 of the insert tool 101.

Zum Überschieben des Einsatzwerkzeugs 101 aus der Werkzeugkammer 199 in die Innenaufnahme 210 der Werkzeugaufnahme 200 und zum Überschieben aus der Innenaufnahme 210 in die Werkzeugkammer 199 ist ein Überschiebemechanismus 110 vorgesehen. Dieser weist ein Überschiebeelement 108 auf, das beispielhaft nach Art einer über ein Betätigungselement 122 betätigbaren Schiebestange 109 ausgebildet ist. Diese wird z.B. in einer am Getriebegehäuse 114 vorgesehenen Führung 116 axial geführt (vgl. insb. Fig. 5). An ihrem dem Einsatzwerkzeug 101 zugewandten axialen Ende ist die Schiebestange 109 zur magnetischen Verbindung mit dem Einsatzwerkzeug 101 vorzugsweise magnetisch ausgebildet. Das Betätigungselement 122 ist zu diesem Zweck bevorzugt in einer am Werkzeuggehäuse 111 vorgesehenen Öffnung 113 parallel zur Drehachse 188 der Werkzeugaufnahme 200 bzw. der Längsmittelachse 189 des Einsatzwerkzeugs 101 axial verschiebbar. Alternativ hierzu ist jedoch auch eine nicht parallele Verschiebbarkeit realisierbar.To push the insert tool 101 out of the tool chamber 199 into the inner receptacle 210 of the tool receptacle 200 and for pushing it out of the inner receptacle 210 into the tool chamber 199 is a pushing mechanism 110 provided. This has a push-over element 108 which is designed, for example, in the manner of a push rod 109 which can be actuated via an actuating element 122. This is guided axially, for example, in a guide 116 provided on the transmission housing 114 (cf. in particular Fig. 5 ). At its axial end facing the insert tool 101, the push rod 109 is preferably magnetically designed for magnetic connection to the insert tool 101. For this purpose, the actuating element 122 is preferably axially displaceable in an opening 113 provided on the tool housing 111 parallel to the axis of rotation 188 of the tool holder 200 or the longitudinal center axis 189 of the insert tool 101. As an alternative to this, however, non-parallel displaceability can also be implemented.

Bei einem Werkzeugwechsel der Handwerkzeugmaschine 100 wird das Werkzeugwechselmagazin 120 vorzugsweise um die Drehachse 103 in eine Werkzeugwechselposition rotiert, in der z.B. die Werkzeugkammer 199 mit dem Einsatzwerkzeug 101 fluchtend mit der Werkzeugaufnahme 200 bzw. mit deren Innenaufnahme 210 ausgerichtet ist. Dann wird das Betätigungselement 122 in Richtung eines Pfeils 167 in der Öffnung 113 von seiner in Fig. 1 hinteren axialen Endstellung bis zu einer vorderen axialen Endstellung verschoben, in der die Schiebestange 109 durch die Werkzeugkammer 199 durchgreift und das Einsatzwerkzeug 101 in der Innenaufnahme 210 der Werkzeugaufnahme 200 blockiert. Zum Überschieben des Werkzeugs 101 aus der Werkzeugaufnahme 200 in die Werkzeugkammer 199 wird dann das Betätigungselement 122 in einer zum Pfeil 167 entgegengesetzten Richtung in der Öffnung 113 axial in seine hintere axiale Endstellung zurück verschoben.When the hand-held power tool 100 changes tools, the tool changing magazine 120 is preferably rotated about the axis of rotation 103 into a tool changing position in which, for example, the tool chamber 199 is aligned with the insert tool 101 with the tool holder 200 or with its inner holder 210. Then the actuating element 122 is in the direction of an arrow 167 in the opening 113 from its in Fig. 1 moved rear axial end position to a front axial end position, in which the push rod 109 extends through the tool chamber 199 and blocks the insert tool 101 in the inner receptacle 210 of the tool holder 200. In order to push the tool 101 out of the tool holder 200 into the tool chamber 199, the actuating element 122 is then axially displaced back to its rear axial end position in the opening 113 in a direction opposite to the arrow 167.

Es sei jedoch darauf hingewiesen, dass die prinzipielle Funktionsweise und der Aufbau der Handwerkzeugmaschine 100 bereits aus der DE 10 2006 059 688 A1 bekannt sind, die darüber hinaus z.B. Verstellmittel zum Drehen des Werkzeugwechselmagazins 120 um die Drehachse 103 beschreibt, um eine fluchtende Ausrichtung der Werkzeugkammer 199 mit der Werkzeugaufnahme 200 zu ermöglichen. Deshalb wird die Offenbarung der DE 10 2006 059 688 A1 zur Vereinfachung der vorliegenden Beschreibung explizit in diese aufgenommen.However, it should be pointed out that the basic mode of operation and the construction of the handheld power tool 100 already derive from the DE 10 2006 059 688 A1 are known, which also describes, for example, adjustment means for rotating the tool changing magazine 120 about the axis of rotation 103 in order to enable the tool chamber 199 to be aligned with the tool holder 200. Therefore, the revelation of the DE 10 2006 059 688 A1 to simplify the present description explicitly included in this.

Fig. 2 zeigt die Werkzeugaufnahme 200 von Fig. 1 beim Überschieben des Einsatzwerkzeugs 101 in Richtung eines Pfeils 267 in die, um die Drehachse 188 bzw. die Längsmittelachse 189 drehbare und den hülsenförmigen Werkzeugaufnahmeabschnitt 211 aufweisende Werkzeugaufnahme 200. Die Werkzeugaufnahme 200 weist illustrativ an einem ersten axialen Endbereich 201 das Abtriebszahnrad 202 von Fig. 1 auf, während sich an einem gegenüberliegenden, zweiten axialen Endbereich 203 der Innensechskant 153 des Innenprofils 152 der Innenaufnahme 210 befindet, der bevorzugt zur im Wesentlichen drehspielfreien Aufnahme des als Außensechskant 154 ausgeführten Außenprofils 151 des Einsatzwerkzeugs 101 dient. Fig. 2 shows the tool holder 200 of Fig. 1 when the insert tool 101 is pushed in the direction of an arrow 267 into the axis of rotation 188 or the longitudinal center axis 189 rotatable and the sleeve-shaped tool receiving portion 211 having tool holder 200. The tool holder 200 illustratively has the output gear 202 of a first axial end region 201 Fig. 1 while the hexagon socket 153 of the inner profile 152 of the inner receptacle 210 is located on an opposite, second axial end region 203, which is preferably used for receiving the outer profile 151 of the insert tool 101, which is embodied as an outer hexagon 154, essentially without rotational play.

Die Werkzeugaufnahme 200 geht vorzugsweise im Bereich einer ersten Schulter 217 des Abtriebszahnrads 202 in einen ersten verjüngten Bereich 216 über, der bevorzugt an einer zweiten Schulter 215 in den Werkzeugaufnahmeabschnitt 211 übergeht. Auf dem Werkzeugaufnahmeabschnitt 211 ist illustrativ ein nach Art eines Nadellagers ausgebildetes Wälzlager 270 zur drehbeweglichen Lagerung der Werkzeugaufnahme 200 in dem Werkzeuggehäuse 111 (vgl. Fig. 1) angeordnet. Das Wälzlager 270 ist beispielhaft zwischen dem ersten verjüngten Bereich 216 und einer Blockierscheibe 260 axial unbeweglich fixiert. Die Blockierscheibe 260 wird ihrerseits von einem Sicherungsring 250, z.B. einem C-Ring, der vorzugsweise in einer am Werkzeugaufnahmeabschnitt 211 ausgebildeten Ringnut 214 befestigt ist, in axialer Richtung der Werkzeugaufnahme 200 blockiert.The tool holder 200 preferably merges in the region of a first shoulder 217 of the driven gear 202 into a first tapered region 216, which preferably merges with the tool holder section 211 on a second shoulder 215. A roller bearing 270 designed in the manner of a needle bearing for the rotatable mounting of the tool holder 200 in the tool housing 111 (cf. Fig. 1 ) arranged. The roller bearing 270 is, for example, fixed axially immovably between the first tapered region 216 and a blocking disk 260. The blocking disk 260 is in turn blocked by a locking ring 250, for example a C-ring, which is preferably fastened in an annular groove 214 formed on the tool receiving section 211, in the axial direction of the tool holder 200.

Der Innensechskant 153 des Innenprofils 152 der Innenaufnahme 210 verfügt bevorzugt über einen illustrativ konischen bzw. keilförmig angeschrägten und vom zweiten axialen Endbereich 203 weggerichteten Zentrierabschnitt 156. Dieser dient vorzugsweise zum radialen Zentrieren des Einsatzwerkzeugs 101 beim Einschieben in die Werkzeugaufnahme 200.The hexagon socket 153 of the inner profile 152 of the inner receptacle 210 preferably has an illustratively conical or wedge-shaped beveled centering section 156 which is directed away from the second axial end region 203. This preferably serves to radially center the insert tool 101 when it is inserted into the tool receptacle 200.

Der hülsenförmige Werkzeugaufnahmeabschnitt 211 weist bevorzugt in einem axialen Bereich zwischen dem Sicherungsring 250 und dem Zentrierabschnitt 156 eine magnetische Positioniereinrichtung 300 auf, die zum umfangsseitigen Ausrichten des Außenprofils 151 des Einsatzwerkzeugs 101 beim Überschieben desselben in die Innenaufnahme 210 unter Schaffung einer vorzugsweise im Wesentlichen drehspielfreien Formschlussverbindung zwischen dem Innenprofil 152 bzw. dem Innensechskant 153 und dem Außenprofil 151 bzw. dem Außensechskant 154 dient. Die Positioniereinrichtung 300 verfügt zu diesem Zweck bevorzugt über mindestens einen Magneten 310, der dazu vorgesehen ist, das Einsatzwerkzeug 101 beim Einschieben in die Innenaufnahme 210 relativ zum Innenprofil 152 auszurichten. Bevorzugt ist der mindestens eine Magnet 310 dazu ausgebildet, das Einsatzwerkzeug 101 um seine Längsmittelachse 189 vorzugsweise jeweils soweit zu verdrehen, dass ein Querschnitt des Außenprofils 151 des Einsatzwerkzeugs 101 beim axialen Einschieben desselben in die Innenaufnahme 210 vollständig innerhalb des Innenprofils 152 liegt bzw. deckungsgleich zu diesem ist. Mindestens eine radial einwärts gerichtete Magnetfläche 312 und mindestens eine Sechskantfläche 158 des Einsatzwerkzeugs 101 liegen im zumindest teilweise in die Innenaufnahme 210 eingeschobenen Zustand (vgl. insb. Fig. 3) des Einsatzwerkzeugs 101 bevorzugt zumindest bereichsweise aneinander an.The sleeve-shaped tool receiving section 211 preferably has a magnetic positioning device 300 in an axial region between the securing ring 250 and the centering section 156, which is used to align the outer profile 151 of the insert tool 101 on the circumferential side when it is pushed into the inner receptacle 210, thereby creating a preferably substantially backlash-free positive connection between the inner profile 152 or the internal hexagon 153 and the outer profile 151 or the external hexagon 154. The positioning device 300 has for this purpose preferably via at least one magnet 310, which is provided to align the insert tool 101 relative to the inner profile 152 when inserted into the inner receptacle 210. The at least one magnet 310 is preferably designed to preferably rotate the insert tool 101 about its longitudinal central axis 189 to such an extent that a cross section of the outer profile 151 of the insert tool 101 lies completely inside the inner profile 152 when the latter is inserted axially into the inner receptacle 210 or is congruent this is. At least one radially inward magnetic surface 312 and at least one hexagonal surface 158 of the insert tool 101 are in the state at least partially inserted into the inner receptacle 210 (cf. in particular Fig. 3 ) of the insert tool 101 preferably at least in regions.

Es sei noch darauf hingewiesen, dass der Zentrierabschnitt 156 lediglich optional ist, sodass in einer alternativen Realisierung auf eine Bereitstellung dieses Zentrierabschnitts 156 verzichtet werden kann. Dies ist z.B. bei einer ausreichend präzisen Positionierung des mindestens einen Magneten 310 im hülsenförmigen Werkzeugaufnahmeabschnitt 211 der Fall.It should also be pointed out that the centering section 156 is merely optional, so that in an alternative implementation it is not necessary to provide this centering section 156. This is e.g. with a sufficiently precise positioning of the at least one magnet 310 in the sleeve-shaped tool receiving section 211 the case.

Die parallel zur Drehachse 188 bzw. zu der Längsmittelachse 189 verlaufende sowie bevorzugt plane Magnetfläche 312 und die Sechskantfläche 158 sind hierbei vorzugsweise um einen radialen Abstand 314 von maximal 2 mm voneinander entfernt, um unter anderem zuverlässig eine ausreichende Kraftwirkung des Magneten 310 auf das Einsatzwerkzeug 101 zu gewährleisten. Die eine Magnetfläche 312 und die mindestens eine Sechskantfläche 158 des Außensechskants 154 des Einsatzwerkzeugs 101 sind beim axialen Herannahen an den Magneten 310 bevorzugt umfangsseitig um maximal 20° zueinander versetzt. Weiterhin verfügt der Magnet 310 bevorzugt über eine in Bezug zu der Drehachse 188 bzw. der Längsmittelachse 189 unter einem Winkel von hier beispielhaft etwa 45° geneigt verlaufende Zentrierfläche 316, die in Richtung des ersten axialen Endbereichs 201 gewandt ist und somit das axiale Einschieben des Einsatzwerkzeugs 101 in die Werkzeugaufnahme 200 weiter erleichtert.The preferably flat magnetic surface 312 running parallel to the axis of rotation 188 or the longitudinal central axis 189 and the hexagonal surface 158 are preferably spaced apart by a radial distance 314 of a maximum of 2 mm in order, inter alia, to reliably ensure a sufficient force effect of the magnet 310 on the insert tool 101 to ensure. The one magnetic surface 312 and the at least one hexagonal surface 158 of the external hexagon 154 of the insert tool 101 are preferably offset circumferentially from one another by a maximum of 20 ° when axially approaching the magnets 310. Furthermore, the magnet 310 preferably has a centering surface 316 which is inclined at an angle of, for example, approximately 45 ° with respect to the axis of rotation 188 or the longitudinal center axis 189 and which faces in the direction of the first axial end region 201 and thus the axial insertion of the insert tool 101 further facilitated in the tool holder 200.

Die Positioniereinrichtung 300 kann ferner einen oder mehrere weitere Magnete 320 aufweisen, der bzw. die in Bezug zur Drehachse 188 bzw. der Längsmittelachse 189 der Werkzeugaufnahme 200 um einen zeichnerisch lediglich angedeuteten Winkel β von bevorzugt ungleich 60° oder ungleich einem Vielfachen hiervon umfangsseitig in Bezug zu dem Magneten 310 versetzt positioniert ist bzw. sind. Darüber hinaus kann die Positioniereinrichtung 300 mindestens einen weiteren, axial verschiebbaren Magneten 325 zur weiteren Optimierung des Einschiebevorgangs des Einsatzwerkzeugs 101 in die Werkzeugaufnahme 200 aufweisen. Dieser axial verschiebbare Magnet 325 kann sich bevorzugt in axialer Richtung der Werkzeugaufnahme 200 zumindest um eine kurze Wegstrecke 190 zusammen mit dem in die Werkzeugaufnahme 200 einzuschiebenden Einsatzwerkzeug 101 bewegen, so dass die korrekte umfangsseitige Position des Einsatzwerkzeugs 101 in Bezug zur Innenaufnahme 210 für einen längeren Verschiebeweg aufrechterhalten bleibt.The positioning device 300 can furthermore have one or more further magnets 320 which, in relation to the axis of rotation 188 or the longitudinal center axis 189 of the tool holder 200, are only indicated by a drawing Angle β of preferably not equal to 60 ° or not equal to a multiple thereof is or are circumferentially offset with respect to the magnet 310. In addition, the positioning device 300 can have at least one further, axially displaceable magnet 325 for further optimization of the insertion process of the insert tool 101 into the tool holder 200. This axially displaceable magnet 325 can preferably move in the axial direction of the tool holder 200 at least a short distance 190 together with the insert tool 101 to be inserted into the tool holder 200, so that the correct circumferential position of the insert tool 101 in relation to the inner holder 210 for a longer displacement path is maintained.

Die Magneten 310, 320, 325 können mit Permanentmagneten als separate Bauteile und/oder mit magnetisierten Bereichen des hülsenförmigen Werkzeugaufnahmeabschnitts 211 integral gebildet sein, sofern dieser mit einem ferromagnetischen Werkstoff hergestellt ist. Vorzugsweise sind die Permanentmagneten mit seltenen Erden durch Sintern etc. gefertigt. Von den magnetisierten Bereichen bzw. Zonen ist ein magnetisierter Bereich 335 stellvertretend für alle übrigen bezeichnet.The magnets 310, 320, 325 can be formed integrally with permanent magnets as separate components and / or with magnetized areas of the sleeve-shaped tool receiving section 211, provided that the latter is made with a ferromagnetic material. The rare earth permanent magnets are preferably made by sintering, etc. Of the magnetized areas or zones, a magnetized area 335 is designated to represent all the others.

Fig. 3 zeigt die Werkzeugaufnahme 200 von Fig. 2 mit dem darin angeordneten Einsatzwerkzeug 101 von Fig. 1 nach dem vollständigen axialen Einschieben des Einsatzwerkzeugs 101 in die Innenaufnahme 210 der Werkzeugaufnahme 200. In diesem vollständig eingeschobenen Zustand ist das Außenprofil 151 bzw. der Außensechskant 154 des Einsatzwerkzeugs 101 mittels einer Formschlussverbindung bevorzugt drehspielfrei, aber zumindest weitestgehend drehspielfrei in dem Innenprofil 152 bzw. dem Innensechskant 153 des Werkzeugaufnahmeabschnitts 211 aufgenommen. Fig. 3 shows the tool holder 200 of Fig. 2 with the insert tool 101 from Fig. 1 after the complete axial insertion of the insert tool 101 into the inner receptacle 210 of the tool receptacle 200. In this completely inserted state, the outer profile 151 or the external hexagon 154 of the insert tool 101 is preferably free of backlash, but at least largely free of backlash in the inner profile 152 or the by means of a positive connection Hexagon socket 153 of the tool receiving section 211 received.

Fig. 4 zeigt das Außenprofil 151 bzw. den Außensechskant 154 des Einsatzwerkzeugs 101 beim Vorbeischieben am Magneten 310 der Positioniereinrichtung 300, wodurch das Einsatzwerkzeug 101 derart um seine Längsmittelachse 189 verdreht wird, dass die Magnetfläche 312 bevorzugt vollflächig an der Sechskantfläche 158 anliegt und somit ein Querschnitt 160 des Außenprofils 151 des Einsatzwerkzeugs 101 kongruent zu einem Querschnitt 162 des Innenprofils 152 der Werkzeugaufnahme 210 ausgerichtet ist. Somit kann das Einsatzwerkzeug 101 praktisch widerstandsfrei unter gleichzeitiger Schaffung einer im Wesentlichen drehspielfreien Formschlussverbindung mit der Innenaufnahme 210 der Werkzeugaufnahme 200 mittels des Überschiebmechanismus von Fig. 1 in diese eingeschoben werden. Fig. 4 shows the external profile 151 or the external hexagon 154 of the insert tool 101 as it is pushed past the magnet 310 of the positioning device 300, as a result of which the insert tool 101 is rotated about its longitudinal central axis 189 in such a way that the magnetic surface 312 preferably abuts the hexagon surface 158 over the full area and thus a cross section 160 of the Outer profile 151 of the insert tool 101 is congruently aligned with a cross section 162 of the inner profile 152 of the tool holder 210. Thus, the application tool 101 is practically resistance-free, while at the same time creating an essentially rotational play-free positive connection with the inner receptacle 210 of the tool receptacle 200 by means of the push-over mechanism of FIG Fig. 1 can be inserted into these.

Der Innensechskant 153 ist axial zumindest abschnittsweise in dem hülsenförmigen Werkzeugaufnahmeabschnitt 211 der Innenaufnahme 210 der Werkzeugaufnahme 200 ausgebildet. Zur weiteren Optimierung des Überschiebevorgangs dient der entgegengesetzt zu der mit einem Pfeil angedeuteten Einschieberichtung des Einsatzwerkzeugs 101 sich trichterförmig bzw. konisch aufweitende Zentrierabschnitt 156 in der Werkzeugaufnahme 210.The hexagon socket 153 is formed axially at least in sections in the sleeve-shaped tool holding section 211 of the inner holder 210 of the tool holder 200. The centering section 156 in the tool holder 210, which funnel-shaped or conically widens, serves to further optimize the pushing-over process in the opposite direction to the insertion direction of the insert tool 101, which is indicated by an arrow.

Fig. 5 zeigt die Werkzeugaufnahme 200 von Fig. 4 mit einer Schiebestange 109 als ein Teil eines Überschiebemechanismus (vgl. insb. Fig. 1). Diese Schiebestange 109 ist bevorzugt im Bereich 335 ihres freien Endes 124 magnetisiert bzw. weist an ihrem freien Ende 124 einen Magneten 330 bzw. einen magnetisierten Bereich auf, wodurch eine mechanisch hinreichend belastbare, jedoch im Bedarfsfall leicht wieder lösbare axiale Verbindung zwischen dem Einsatzwerkzeug 101 und der Schiebestange109 gegeben ist. Infolgedessen kann das Einsatzwerkzeug 101 zudem zur Durchführung eines Wechsels des Einsatzwerkzeugs 101 problemlos mittels der Schiebestange 109 wieder aus der Innenaufnahme 210 herausgezogen werden. Fig. 5 shows the tool holder 200 of Fig. 4 with a push rod 109 as part of a push mechanism (see esp. Fig. 1 ). This push rod 109 is preferably magnetized in the area 335 of its free end 124 or has a magnet 330 or a magnetized area at its free end 124, as a result of which an axial connection between the insert tool 101 and which is mechanically sufficiently resilient, but easily detachable if necessary the push rod 109 is given. As a result, the insert tool 101 can also be easily pulled out of the inner receptacle 210 by means of the push rod 109 to carry out a change of the insert tool 101.

Der Magnet 330 bzw. der magnetisierte Bereich 335 sind vorzugsweise zentrisch zur Längsmittelachse 189 des Einsatzwerkzeugs 101 innerhalb des freien Endes 124 der Schiebestange 109 ausgebildet. Hierbei kann der Magnet 330 als ein separates Bauteil ausgebildet und auf geeignete Weise in dem freien Ende 124 der Schiebestange 109 beispielsweise durch Einpressen, thermisches Einschrumpfen, Einkleben, Verstemmen etc. befestigt sein. Ist die Schiebestange 109 mit einem ferromagnetischen Werkstoff gebildet, kann das freie Ende 124 auch selbst magnetisiert sein.The magnet 330 or the magnetized area 335 are preferably formed centrally to the longitudinal central axis 189 of the insert tool 101 within the free end 124 of the push rod 109. Here, the magnet 330 can be designed as a separate component and can be suitably fastened in the free end 124 of the push rod 109, for example by pressing in, thermal shrinking, gluing, caulking, etc. If the push rod 109 is formed with a ferromagnetic material, the free end 124 can also itself be magnetized.

Das Einsatzwerkzeug 101 befindet sich in Fig. 5 illustrativ erneut in axialer Richtung kurz vor dem vollständig in die Werkzeugaufnahme 200 eingeschobenen Zustand, in dem zwischen dem Außensechskant 154 des Einsatzwerkzeugs 101 und dem Innensechskant 153 des Werkzeugaufnahmeabschnitts 211 der Innenaufnahme 210 der Werkzeugaufnahme 200 eine im Wesentlichen drehspielfreie Formschlussverbindung besteht.The insert tool 101 is located in FIG Fig. 5 illustratively again in the axial direction shortly before the state fully inserted into the tool holder 200, in the state between the external hexagon 154 of the insert tool 101 and the internal hexagon 153 of the tool holder section 211 of the inner holder 210 of the tool holder 200 there is a form-fit connection that is essentially free of rotational play.

Claims (12)

  1. Portable power tool (100) having a tool receptacle (200) which is configured to receive an application tool (101) provided with an external profile (151) and has an internal receptacle (210) provided at least partially with an internal profile (152), and having a tool housing (111), to which a tool change magazine (120) having at least one tool chamber (199) for storing the application tool (101) is assigned, said tool chamber (199) being able to be oriented so as to be flush with the tool receptacle (200) in order to make it possible to transfer the application tool (101) from the tool chamber (199) into the internal receptacle (210) or from the internal receptacle (210) into the tool chamber (199), wherein a positioning device (300) for circumferentially orienting the external profile (151) when the application tool (101) is transferred from the tool chamber (199) into the internal receptacle (210) of the tool receptacle (200) in order to produce an at least substantially rotational-play-free form-fitting connection between the internal profile (152) and the external profile (151) is provided, characterized in that the positioning device (300) has at least one magnet (310, 320, 325), which is provided to orient the application tool (101) relative to the internal profile (152) when it is inserted into the internal receptacle (210).
  2. Portable power tool according to Claim 1, characterized in that the external profile (151) of the application tool (101) is an external polygon (154) and the internal profile (152) of the internal receptacle (210) is an internal polygon (153).
  3. Portable power tool according to Claim 1 or 2, characterized in that the internal polygon (153) is formed at least partially in a sleeve-like tool receptacle portion (211) of the tool receptacle (210), and the at least one magnet (310, 320) of the positioning device is arranged in the sleeve-like tool receptacle portion (211).
  4. Portable power tool according to one of the preceding claims, characterized in that the internal polygon (153) has a centring portion (156).
  5. Portable power tool according to one of the preceding claims, characterized in that at least one radially inwardly directed magnet surface (312) of the at least one magnet (310, 320) and at least one polygon surface (158) of the external polygon (154) rest against one another at least locally in a parallel manner in the at least partially inserted state of the application tool (101).
  6. Portable power tool according to Claim 5, characterized in that the at least one magnet surface (312) and the at least one polygon surface (158) of the external polygon (154) of the application tool (101) are offset circumferentially by at most 20° with respect to one another when the at least one magnet (310, 320) is reached by the polygon surface (158).
  7. Portable power tool according to Claim 5 or 6, characterized in that the at least one magnet surface (312) and the at least one polygon surface (158) of the external polygon (154) of the application tool (101) are spaced apart from one another by at most 2 mm.
  8. Portable power tool according to one of the preceding claims, characterized in that the positioning device (300) has at least one further magnet (320), which is offset with respect to a longitudinal centre axis (189) of the application tool (101) by an angle (β) not equal to 60° or not equal to a multiple of 60° with respect to the at least one magnet (310).
  9. Portable power tool according to one of the preceding claims, characterized in that the at least one magnet (310, 320, 325) of the positioning device is formed by a permanent magnet or by a magnetized region (335) of the sleeve-like tool receptacle portion (211).
  10. Portable power tool according to one of the preceding claims, characterized in that the application tool (101) is able to be transferred from the tool chamber (199) into the internal receptacle (210) of the tool receptacle (200) and from the internal receptacle (210) back into the tool chamber (199) by means of a transfer mechanism (110), in particular a push rod (109).
  11. Portable power tool according to Claim 10, characterized in that a free end portion (124), facing the application tool, of the push rod (109) is magnetized.
  12. Portable power tool according to one of the preceding claims, characterized in that the at least one magnet (310, 320, 325) is provided to rotate the application tool (101) about a longitudinal centre axis (189) of the application tool (101) such that the cross section (160) of the external profile (151) of the application tool (101) is arranged entirely within the internal profile (162) of the internal receptacle (210) when the application tool (101) is pushed into the internal receptacle (210).
EP17700528.7A 2016-02-03 2017-01-16 Portable power tool having a tool change magazine Active EP3411191B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016201653.9A DE102016201653A1 (en) 2016-02-03 2016-02-03 Hand tool with a tool change magazine
PCT/EP2017/050781 WO2017133886A1 (en) 2016-02-03 2017-01-16 Portable power tool having a tool change magazine

Publications (2)

Publication Number Publication Date
EP3411191A1 EP3411191A1 (en) 2018-12-12
EP3411191B1 true EP3411191B1 (en) 2020-01-01

Family

ID=57821976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17700528.7A Active EP3411191B1 (en) 2016-02-03 2017-01-16 Portable power tool having a tool change magazine

Country Status (5)

Country Link
US (1) US10759038B2 (en)
EP (1) EP3411191B1 (en)
CN (1) CN108602185B (en)
DE (1) DE102016201653A1 (en)
WO (1) WO2017133886A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109725604B (en) * 2019-01-28 2020-07-24 莱芜钢铁集团有限公司 Hall tool rest control method, system and device
CN111906730A (en) * 2019-05-07 2020-11-10 苏州宝时得电动工具有限公司 Power tool

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US5893685A (en) * 1997-02-11 1999-04-13 Orb Industries, Inc. Multiple bit power tool
DE10001508A1 (en) * 2000-01-15 2001-07-19 Bosch Gmbh Robert Hand tool machine, such as motorized hand saw, has tool holders with guide sleeves with integral rapid locking mechanisms that lock automatically on inserting tool and can be manually unlocked
DE10005989A1 (en) * 2000-02-10 2001-08-16 Bosch Gmbh Robert Hand tool
DE10013984A1 (en) * 2000-03-22 2001-09-27 Manfred Schneider Manual screw driver etc. has magazine with open tool supports next to tool holders
US6813977B2 (en) * 2001-06-11 2004-11-09 Davicorp Inc. Screw gun
DE102006059688A1 (en) * 2006-12-18 2008-06-19 Robert Bosch Gmbh Motor driven machine tool
US9517538B2 (en) * 2010-11-17 2016-12-13 Robert Bosch Gmbh Motor-powered machine tool, in particular a hand-held machine tool
US9421681B2 (en) * 2011-08-06 2016-08-23 Positec Power Tools (Suzhou) Co., Ltd. Power tool and operation method for the power tool
DE102011082787A1 (en) * 2011-09-15 2013-03-21 Robert Bosch Gmbh Motor-operated machine tool
DE102011087297B4 (en) * 2011-11-29 2017-07-06 Robert Bosch Gmbh Hand tool with a drum-like tool change magazine
DE102011087293B4 (en) * 2011-11-29 2023-12-21 Robert Bosch Gmbh Hand tool with a drum-like tool change magazine
DE202011110928U1 (en) 2011-11-29 2017-05-03 Robert Bosch Gmbh Hand tool with a drum-like tool change magazine
DE102012220835A1 (en) 2012-11-15 2014-05-15 Robert Bosch Gmbh Tool attachment for attachment to tool holder in tool system, has tool changing magazine part axially and radially immovable on attachment housing during operation of tool attachment relative to drive shaft

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Also Published As

Publication number Publication date
WO2017133886A1 (en) 2017-08-10
CN108602185B (en) 2022-03-01
DE102016201653A1 (en) 2017-08-03
EP3411191A1 (en) 2018-12-12
US20190039229A1 (en) 2019-02-07
US10759038B2 (en) 2020-09-01
CN108602185A (en) 2018-09-28

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