EP2866986B1 - Werkzeugkopplungsvorrichtung - Google Patents

Werkzeugkopplungsvorrichtung Download PDF

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Publication number
EP2866986B1
EP2866986B1 EP13729306.4A EP13729306A EP2866986B1 EP 2866986 B1 EP2866986 B1 EP 2866986B1 EP 13729306 A EP13729306 A EP 13729306A EP 2866986 B1 EP2866986 B1 EP 2866986B1
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EP
European Patent Office
Prior art keywords
tool
holding element
tool holding
coupling device
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13729306.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2866986A2 (de
Inventor
Thomas Duerr
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 EP2866986A2 publication Critical patent/EP2866986A2/de
Application granted granted Critical
Publication of EP2866986B1 publication Critical patent/EP2866986B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • 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
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/02—Chain saws equipped with guide bar
    • 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
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/08—Drives or gearings; Devices for swivelling or tilting the chain saw

Definitions

  • Tool coupling devices are already known for receiving a power tool parting device designed as a closed system, which comprises a tool holding unit which has at least one tool holding element which is mounted rotatably about an axis of movement of the tool holding element which runs at least essentially perpendicularly to a clamping plane of the tool holding element.
  • GB2452768 discloses a tool coupling device according to the preamble of claim 1.
  • the invention is based on a tool coupling device for accommodating a machine tool parting device, in particular a machine tool parting device designed as a closed system, with at least one tool holding unit which has at least one tool holding element which is mounted rotatably about an axis of movement of the tool holding element which runs at least substantially perpendicularly to a clamping plane of the tool holding element is.
  • the tool holding element is rotatably mounted at least starting from a tool fixing position of the tool holding element about the axis of movement of the tool holding element into a tool coupling position of the tool holding element along an angular range that has an angular dimension that is less than 360°.
  • the tool holding element is at least starting from a tool fixing position of the tool holding element around the axis of movement of the tool holding element rotatably mounted in a tool coupling position of the tool holding element along an angular range which has an angular dimension which is smaller than 180°, preferably smaller than 90° and particularly preferably smaller than 20°.
  • the tool holding element is preferably designed as a clamping disk.
  • the tool coupling device is preferably provided to receive the machine tool parting device in a positive and/or non-positive manner or to fix the machine tool parting device to a base body of the tool coupling device by means of a positive and/or non-positive connection by means of the tool holding unit.
  • “Provided” should be understood to mean, in particular, specially programmed, designed and/or equipped.
  • the tool holding element exerts a holding force in the direction of the base body, preferably by means of a positive connection, on a guide unit of the power tool parting device.
  • the machine tool parting device is preferably received by the tool coupling device or fixed to the base body of the tool coupling device for transmission of drive forces to the machine tool parting device.
  • the tool holding element preferably exerts a holding force on the machine tool parting device at least in one state, in particular in at least one state of the machine tool parting device connected to the tool coupling device.
  • the tool holding element is particularly preferably provided for generating a holding force in at least one tool fixing position of the tool holding element.
  • the expression “essentially perpendicular” is intended here to define in particular an alignment of a direction relative to a reference direction, with the direction and the reference direction, viewed in particular in one plane, enclosing an angle of 90° and the angle has a maximum deviation of, in particular, less than 8 °, advantageously less than 5° and particularly advantageously less than 2°.
  • the term "clamping plane” is intended here to define in particular a plane that forms at least one clamping surface of the tool holding element. The clamping plane is preferably provided at least in the tool fixing position of the tool holding element for generating a holding force, in particular a clamping force, for fixing a power tool parting device on the base body of the tool coupling device.
  • the clamping plane or the clamping surface is preferably located at least in the tool fixing position of the tool holding element at least on a guide unit of the power tool parting device.
  • the clamping plane of the tool holding element preferably extends at least essentially perpendicularly to an axis of rotation of a drive element of the tool coupling device that is rotatably mounted in the base body of the tool coupling device.
  • tool fixing position is intended here to define in particular a position of the tool holding element in which the tool holding element exerts a holding force on a machine tool parting device arranged on the base body of the tool coupling device. The power tool parting device is thus fixed in the tool fixing position of the tool holding element on the tool coupling device.
  • tool coupling position defines a position of the tool holding element in which a machine tool parting device can be coupled to the base body or a tool receiving element of the tool coupling device.
  • the tool holding element is preferably designed differently from a screw.
  • a tool coupling device that is easy to operate can advantageously be achieved by means of the configuration according to the invention.
  • a time-saving coupling of a machine tool parting device to the base body of the tool coupling device can advantageously be achieved.
  • a secure fixing of a power tool parting device can advantageously be achieved.
  • the tool holding unit has at least one spring element which applies a spring force to the tool holding element.
  • a "spring element” is to be understood in particular as a macroscopic element which has at least two ends which are spaced apart from one another and which in a normal operating state can be moved elastically along a movement path relative to one another, the movement path being at least greater than 0.5 mm, in particular greater than 1 mm, preferably greater than 2 mm and particularly advantageously greater than 3 mm, and which in particular generates a counterforce which is dependent on an elastic movement of the ends relative to one another and is preferably proportional to the elastic movement of the ends relative to one another and counteracts the change .
  • a "macroscopic element” is to be understood in particular as an element with an extension of at least 1 mm, in particular at least 5 mm and preferably at least 10 mm.
  • the spring element can be designed as a tension spring, a compression spring, a torsion spring, a bending spring, etc be.
  • the spring element is particularly preferably designed as a helical compression spring or as a torsion spring.
  • the spring element it is also conceivable for the spring element to have a different design that appears sensible to a person skilled in the art.
  • the spring element is designed as a torsion spring which applies a spring force to the tool holding element along a circumferential direction running in the clamping plane.
  • a rotational movement can be achieved about the axis of movement of the tool holding element after an operator's actuating force on the tool holding element has been removed.
  • a high level of operating convenience can advantageously be achieved.
  • a secure fixing of a power tool parting device can advantageously be achieved.
  • the tool holding unit has at least one movement limiting element which is intended to limit a movement path of the tool holding element.
  • the movement limiting element preferably engages in a recess of the tool holding element.
  • the movement limiting element is preferably designed as a limiting pin.
  • the movement-limiting element it is also conceivable for the movement-limiting element to be designed as an extension against which an end, an edge or an extension of the tool holding element strikes. A limitation of a movement distance of the tool holding element can thus be achieved in a structurally simple manner.
  • the tool holding unit has at least one pressing element which is intended to generate a spring force in the direction of a form-fitting recess of the tool form-fitting element.
  • the pressing element is particularly preferably designed as a spring plate.
  • the pressing element it is also conceivable for the pressing element to have another design that would appear sensible to a person skilled in the art, such as a design as a helical spring, an involute spring, a plate spring, etc applied and corresponding to the form-fitting recess holding element of a machine tool separating device with a spring force.
  • the tool holding element has at least one form-fitting recess, which has at least two functional areas.
  • a “functional area” is to be understood here in particular as an area of the form-fitting recess that is intended to fulfill a predetermined function.
  • one of the functional areas is provided for inserting a holding element of a machine tool parting device and one of the functional areas is provided for a positive connection for fixing a holding element, in particular for fixing a holding element along a direction running at least substantially parallel to an insertion direction of a holding element.
  • the functional areas are designed as two mutually engaging or overlapping partial circles which have different diameters.
  • reliable securing can be achieved by means of the positive-locking recess.
  • a structurally simple form-fitting connection between the tool holding element and a power tool parting device can advantageously be achieved.
  • the tool holding unit has at least one operating element for actuating the tool form-fitting element.
  • a "control element” is to be understood in particular as an element that is intended to receive an input variable from an operator during an operation and, in particular, to be contacted directly by an operator, with touching of the element being sensed and/or a force being exerted on the element Actuating force is sensed and / or mechanically passed on to operate a unit and / or another element.
  • the operating element is particularly preferably mounted such that it can be rotated or pivoted about an operating axis of the operating element that runs at least essentially parallel to the movement axis of the tool holding element.
  • substantially parallel is intended here in particular to mean an orientation of a direction relative to a reference direction, in particular in a plane, with the direction having a deviation from the reference direction, in particular less than 8°, advantageously less than 5° and particularly advantageously less than 2°.
  • the operating element is preferably designed separately from the tool holding element.
  • the operating element is preferably coupled in terms of movement to the tool holding element by an actuating extension of the tool holding element, which engages in a recess on the operating element.
  • the operating element is designed in one piece with the tool holding element.
  • the tool coupling device comprises at least one drive element, which is mounted so as to be rotatable about an axis of rotation running at least substantially parallel to a movement axis of the tool holding element.
  • the axis of movement of the tool holding element preferably runs at least essentially perpendicularly to the axis of rotation of the drive element of the tool coupling device or of a portable machine tool that includes the tool coupling device and is rotatably mounted in the base body of the tool coupling device.
  • the invention is based on a portable machine tool with a tool coupling device according to the invention.
  • the tool coupling device is preferably provided for positive and/or non-positive coupling with a machine tool parting device.
  • a "portable machine tool” is to be understood here in particular as a machine tool, in particular a hand-held machine tool, which can be transported by an operator without a transport machine.
  • the portable machine tool has a mass that is less than 40 kg, preferably less than 10 kg and particularly preferably less than 5 kg. It can be beneficial a portable power tool can be achieved on which a power tool separating device can be arranged particularly conveniently.
  • the invention is based on a machine tool system with a machine tool according to the invention and a machine tool parting device that has at least one cutting strand and at least one guide unit that forms a closed system together with the cutting strand.
  • a “cutting line” is to be understood here in particular as a unit that is provided to locally break the atomic cohesion of a workpiece to be machined, in particular by mechanically separating and/or mechanically removing material particles from the workpiece.
  • the cutting strand is preferably provided to separate the workpiece into at least two physically separate parts and/or to at least partially separate and/or remove material particles of the workpiece starting from a surface of the workpiece.
  • the cutting strand is preferably designed as a cutting chain. It is also conceivable, however, for the cutting strand to have a different design that appears sensible to a person skilled in the art, such as a design as a cutting line to which cutting elements are fixed.
  • the term "guiding unit” is intended to define here in particular a unit which is intended to exert a constraining force on the cutting strand at least in a direction perpendicular to a cutting direction of the cutting strand in order to specify a possibility of movement of the cutting strand along the cutting direction.
  • a "cutting direction” is to be understood here in particular as a direction along which the cutting strand is used to generate a cutting gap and/or to separate and/or remove material particles from a workpiece to be machined in at least one operating state as a result of a driving force and/or a driving torque, especially in the guide unit.
  • the cutting strand is preferably moved in an operating state along the cutting direction relative to the guide unit.
  • closed system is intended here to define in particular a system that comprises at least two components that, by means of an interaction in a disassembled state of the system, retain a functionality of a system that is superordinate to the system, in particular the tool coupling device, and/or which in the disassembled state are inextricably linked.
  • the at least two components are preferred of the closed system connected to one another at least essentially inseparably for an operator.
  • "At least essentially inseparable” is to be understood here in particular as a connection of at least two components that can only be separated with the aid of separating tools, such as a saw, in particular a mechanical saw, etc., and/or chemical separating agents, such as solvents, etc. , are separable from each other.
  • the power tool parting device has a maximum dimension of less than 10 mm, preferably less than 8 mm and particularly preferably less than 5 mm, viewed along a direction running at least substantially perpendicular to a cutting plane of the power tool parting device.
  • the dimension is preferably designed as the width of the power tool parting device.
  • the machine tool parting device has an at least substantially constant maximum dimension along the entire length of the machine tool parting device, viewed in the direction running at least essentially perpendicular to the cutting plane of the machine tool parting device.
  • the machine tool parting device is therefore preferably provided to produce a cutting gap which, viewed along the direction running at least substantially perpendicularly to the cutting plane of the machine tool parting device, has a maximum dimension of less than 5 mm.
  • the tool coupling device according to the invention, the portable machine tool according to the invention and/or the machine tool system according to the invention should not be limited to the application and embodiment described above.
  • the tool coupling device according to the invention, the portable machine tool according to the invention and/or the machine tool system according to the invention can have a number of individual elements, components and units that differs from the number specified here in order to fulfill a function described herein.
  • FIG 1 shows a portable power tool 38 with a tool coupling device 10 for positive and/or non-positive coupling of a power tool parting device 12 ( figure 2 ).
  • the portable machine tool 38 and the machine tool disconnect device 12 together form a machine tool system.
  • the power tool parting device 12 comprises at least one cutting strand 40 and at least one guide unit 42 for guiding the cutting strand 40.
  • the guide unit 42 and the cutting strand 40 together form a closed system.
  • the power tool parting device 12 is designed as a closed system.
  • the portable power tool 38 has a power tool housing 44 which encloses a drive unit 46 and a transmission unit 48 of the portable power tool 38 .
  • the drive unit 46 and the gear unit 48 are used to generate a power on the machine tool parting device 12 transmittable drive torque in a manner already known to a person skilled in the art operatively connected to one another.
  • the gear unit 48 is designed as an angular gear.
  • the transmission unit 48 includes a detent clutch unit 82 which is intended to prevent damage to gears of the transmission unit 48 as a result of overloading. The overload can be caused, for example, by the cutting strand 40 jamming in a workpiece.
  • the drive unit 46 is designed as an electric motor unit.
  • drive unit 46 and/or transmission unit 48 may have a different configuration that would appear sensible to a person skilled in the art, such as, for example, drive unit 46 being configured as a hybrid drive unit or as a combustion drive unit, etc. and/or transmission unit 48 being configured as a Worm gear, etc.
  • the drive unit 46 is intended to drive the cutting strand 40 of the power tool parting device 12 in at least one operating state via the gear unit 48 .
  • the cutting strand 40 is moved in the guide unit 42 of the power tool parting device 12 along a cutting direction of the cutting strand 40 relative to the guide unit 42 .
  • the cutting strand 40 is moved around the guide unit 42 in one operation.
  • the tool coupling device 10 is provided for receiving the machine tool parting device 12 designed as a closed system.
  • the tool coupling device 10 comprises at least one tool holding unit 14, which has at least one tool holding element 16, which is rotatably mounted about an axis of movement 18 of the tool holding element 16 running at least substantially perpendicular to a clamping plane of the tool holding element 16.
  • the tool holding element 16 is rotatably mounted about the movement axis 18 of the tool holding element 16 into a tool coupling position of the tool holding element 16 along an angular range which has an angular dimension which is less than 360°.
  • the tool holding unit 14 has at least one movement limiting element 22 which is intended to limit a movement distance of the tool holding element 16 .
  • the movement limiting element 22 limits a movement distance of the tool holding element 16 around the movement axis 18 of the tool holding element 16 to an angular range with an angle of less than 20 °.
  • the tool holding element 16 is thus rotated by an operator by an angle of less than 20° about the movement axis 18 of the tool holding element 16 for coupling and/or removal of the power tool parting device 12 starting from the tool fixing position.
  • the tool holding unit 14 has two movement limiting elements 22, 50 which are intended to limit a movement path of the tool holding element 16.
  • the movement limiting elements 22, 50 are designed as a circular extension. However, it is also conceivable for the movement-limiting elements 22, 50 to have a different design that would appear sensible to a person skilled in the art, such as a design as a rib, web or groove, etc.
  • the movement limiting elements 22 , 50 are arranged on a base body 52 of the tool coupling device 10 at a uniform distance from one another along a circumferential direction running around the movement axis 18 of the tool holding element 16 .
  • the movement limiting elements 22, 50 are formed in one piece with the base body 52.
  • the tool holding element 16 has at least two recesses 54 , 56 for receiving the movement limiting elements 22 , 50 .
  • the recesses 54, 56 are spaced evenly apart from one another along the circumferential direction running around the movement axis 18 of the tool holding element 16.
  • Each of the recesses 54, 56 is designed as an elongated hole.
  • the recesses 54, 56 can have another configuration that would appear sensible to a person skilled in the art, such as a configuration as a groove, a web, a rib, etc.
  • the recesses 54 limit , 56 a movement distance of the tool holding element 16.
  • the tool holding element 16 is in this case designed as a clamping disk.
  • the tool holding element 16 is movably mounted relative to the base body 52 by means of an engagement of the movement limiting elements 22 , 50 in the recesses 54 , 56 of the tool holding element 16 embodied as oblong holes.
  • the movement-limiting elements 22, 50 each have a fastening area 58, 60, which is provided for a fastening element in each case 62, 64 of the tool holding unit 14.
  • the fastening areas 58, 60 are each designed as internal threads.
  • the fastening elements 62, 64 are designed as screws which are provided for fastening a tool receiving element 66 of the tool holding unit 14 to the base body 52.
  • Tool receiving element 66 has a receiving recess for at least partially receiving machine tool parting device 12 when machine tool parting device 12 is coupled to tool coupling device 10 .
  • the tool receiving element 66 has a rotational play opening 68 in which a drive element 34 of the tool coupling device 10 is arranged.
  • the drive element 34 is arranged at a distance relative to the base body 52 from an edge region of the base body 52 delimiting the rotational play opening 68, viewed in a direction running at least substantially perpendicularly to a rotational axis 36 of the drive element 34.
  • the drive element 34 is designed as a drive gear.
  • the base body 52 includes a bearing recess 70 in which a bearing element 72 of the tool coupling device 10 is arranged for a rotatable bearing of the drive element 34 ( figure 2 ).
  • the bearing element 72 is designed as a roller bearing. It is also conceivable, however, for the bearing element 72 to have a different configuration that appears sensible to a person skilled in the art.
  • the drive element 34 is provided to transmit a drive force of the drive unit 46 to the cutting strand 40 .
  • the drive element 34 thus engages in the cutting strand 40 when the machine tool parting device 12 is connected to the tool coupling device 10 .
  • the drive element 34 engages in drive recesses of cutting strand segments of the cutting strand 40 (not shown in detail here).
  • the drive element 34 is connected in a torque-proof manner to an output element 74 of the transmission unit 48 ( figure 2 ).
  • the drive element 34 is rotatably mounted in the base body 52 about the rotation axis 36 running at least substantially parallel to the movement axis 18 of the tool holding element 16 .
  • the base body 52 is rotatably mounted in a connection housing 76 of the machine tool housing 44 of the portable machine tool 38 .
  • the base body 52 is mounted in the connection housing 76 such that it can rotate about an axis that is at least essentially parallel to the axis of rotation 36 of the drive element 34 .
  • the portable power tool 38 has at least one rotary positioning unit 78 for fixing a rotary position of the base body 52 relative to the connection housing 76 .
  • the rotary positioning unit 78 comprises at least one positioning element 80 for fixing the base body 52 in a position relative to the connection housing 76.
  • the positioning element 80 is embodied as a locking slide which, with positioning recesses (not shown here in detail) in the base body 52, can be known way interacts. It is also conceivable, however, for the rotary positioning unit 78 to have another configuration that appears sensible to a person skilled in the art, such as a toothed configuration, etc.
  • the positioning element 80 can also be spring-loaded.
  • the tool holding unit 14 has at least one spring element 20 which acts on the tool holding element 16 with a spring force ( figure 2 ).
  • the spring element 20 is designed as a torsion spring which applies a spring force to the tool holding element 16 along a circumferential direction running in the clamping plane.
  • the spring element 20 thus applies a spring force to the tool holding element 16 along a circumferential direction running around the movement axis 18 of the tool holding element 16 .
  • the tool holding element 16 is biased into the tool fixing position.
  • the spring element 20 is supported with one end on the base body 52 or on the connection housing 76 and with a further end the spring element 20 is supported on the tool holding element 16 .
  • the tool holding element 16 has at least one clamping extension 84, on which the spring element 20 is supported.
  • the clamping extension 84 also interacts with an operating element 32 of the tool holding unit 14 to move the tool holding element 16 about the movement axis 18 .
  • the operating element 32 is thus provided for actuating the tool holding element 16 .
  • the operating element 32 is pivotably mounted on an outer circumference of the base body 52 .
  • the control element 32 is movably mounted along a circumferential direction running in a plane extending at least substantially perpendicularly to the movement axis 18 of the tool holding element 16 along the outer circumference of the base body 52 .
  • the tool holding unit 14 has at least one pressing element 24 which is intended to generate a spring force in the direction of a form-fitting recess 26 of the tool holding element 16 ( figure 2 ).
  • the tool holding element 16 thus has at least the form-fitting recess 26, which has at least two functional areas 28, 30.
  • the tool holding element 16 has two form-fitting recesses 26 , 86 .
  • Each of the two form-fitting recesses 26, 86 has at least two functional areas 28, 30, 92, 94.
  • the tool holding element 16 it is also conceivable for the tool holding element 16 to have a number of positive-locking recesses 26, 86 that differs from two.
  • the pressing element 24 is designed as a spring plate, in particular as a circular spring plate.
  • the pressing element 24 is arranged between the base body 52 and the tool holding element 16 , viewed along a direction running at least essentially parallel to the movement axis 18 of the tool holding element 16 .
  • the pressing element 24 is provided for the purpose of applying a spring force in the direction of the tool holding element 16 to the holding elements 88 , 90 of the power tool parting device 12 in a state in which they are arranged in the positive-locking recesses 26 , 86 .
  • the holding elements 88, 90 each have a conically shaped insertion area and a fixing groove 96, 98.
  • the fixing groove 96, 98 is provided in each case to interact with one of the functional areas 28, 30, 92, 94 of the form-fitting recesses 26, 86 in order to positively fix the power tool parting device 12 on the tool coupling device 10.
  • the functional areas 28, 30, 92, 94 of the form-fitting recesses 26, 86 are each formed as circular recesses which are arranged so as to overlap. In this case, the circular recesses each have different diameters from one another.
  • the functional areas 28, 30, 92, 94 it is also conceivable for the functional areas 28, 30, 92, 94 to have a different configuration that appears sensible to a person skilled in the art, such as a configuration of a tapering groove.
  • a part of the groove would be an insertion function area formed and a tapered part of the groove would be formed as a holding function area.
  • machine tool parting device 12 is inserted into the receiving recess of tool receiving element 66 along a direction running at least substantially parallel to rotational axis 36 of drive element 34.
  • the tool holding element 16 is moved from the tool fixing position into the tool coupling function against the spring force of the spring element 20 by actuating the operating element 32 .
  • a functional area 28 , 92 of the form-fitting recesses 26 , 86 embodied as an insertion functional area is arranged overlapping one of two insertion recesses of the tool receiving element 66 .
  • the holding elements 88, 90 for coupling the machine tool parting device 12 to the tool coupling device 10 are inserted through the insertion recesses of the tool receiving element 66 into the respective functional area 28, 92 of the form-fitting recesses 26, 86, which is designed as an insertion functional area.
  • the machine tool parting device 12 is moved in the direction of the tool coupling device 10 until the guide unit 42 rests against the tool receiving element 66 .
  • the tool holding element 16 is then rotated by an angle of approximately 15° relative to the base body 52 into the tool fixing position as a result of a lifting of an actuating force on the operating element 32 by the spring force.
  • a functional area 30, 94 of the respective positive-locking recess 26, 86 designed as a fixing functional area is inserted into the respective fixing groove 96, 98.
  • the holding elements 88 , 90 are acted upon by the pressing element 24 with a spring force along a direction running at least substantially parallel to the axis of rotation 36 of the drive element 34 .
  • Torques acting when machining a workpiece are supported by means of an interaction between the holding elements 88, 90 and the positive-locking recesses 26, 86 and/or by means of an interaction between the tool receiving element 66 and the guide unit 42.
  • cutting strand segments of cutting strand 40 are in engagement with drive element 34 to drive cutting strand 40.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Gripping On Spindles (AREA)
  • Sawing (AREA)
  • Jigs For Machine Tools (AREA)
  • Milling Processes (AREA)
EP13729306.4A 2012-06-28 2013-06-10 Werkzeugkopplungsvorrichtung Active EP2866986B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012211102.6A DE102012211102A1 (de) 2012-06-28 2012-06-28 Werkzeugkopplungsvorrichtung
PCT/EP2013/061867 WO2014001065A2 (de) 2012-06-28 2013-06-10 Werkzeugkopplungsvorrichtung

Publications (2)

Publication Number Publication Date
EP2866986A2 EP2866986A2 (de) 2015-05-06
EP2866986B1 true EP2866986B1 (de) 2022-06-01

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EP13729306.4A Active EP2866986B1 (de) 2012-06-28 2013-06-10 Werkzeugkopplungsvorrichtung

Country Status (5)

Country Link
EP (1) EP2866986B1 (ru)
CN (1) CN104411470B (ru)
DE (1) DE102012211102A1 (ru)
RU (1) RU2648374C2 (ru)
WO (1) WO2014001065A2 (ru)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017216870A1 (de) * 2017-09-25 2019-03-28 Robert Bosch Gmbh Kettensägensystem
EP4324599A3 (en) 2018-03-23 2024-03-20 Milwaukee Electric Tool Corporation Attachment mechanism for a power tool

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Also Published As

Publication number Publication date
DE102012211102A1 (de) 2014-01-02
EP2866986A2 (de) 2015-05-06
CN104411470A (zh) 2015-03-11
RU2015102507A (ru) 2016-08-20
CN104411470B (zh) 2017-11-07
WO2014001065A2 (de) 2014-01-03
WO2014001065A3 (de) 2014-03-20
RU2648374C2 (ru) 2018-03-26

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