EP2680994B1 - Dispositif d'une machine outil defini pour du coupage. - Google Patents

Dispositif d'une machine outil defini pour du coupage. Download PDF

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Publication number
EP2680994B1
EP2680994B1 EP12714211.5A EP12714211A EP2680994B1 EP 2680994 B1 EP2680994 B1 EP 2680994B1 EP 12714211 A EP12714211 A EP 12714211A EP 2680994 B1 EP2680994 B1 EP 2680994B1
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EP
European Patent Office
Prior art keywords
guide unit
guide
cutting
cutting strand
segment
Prior art date
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Active
Application number
EP12714211.5A
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German (de)
English (en)
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EP2680994A1 (fr
Inventor
Rudolf Fuchs
Petr Grulich
Uwe Engelfried
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
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Publication of EP2680994A1 publication Critical patent/EP2680994A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/02—Chain saws equipped with guide bar

Definitions

  • machine tool cutting devices in particular handheld power tool cutting devices, with at least one cutting strand and with at least one guide unit.
  • the invention is based on a machine tool separating device described in the preamble of claim 1, in particular of a handheld power tool cutting device, with at least one cutting strand and with at least one guide unit.
  • a machine tool separating device is the US 2 348 612 A refer to.
  • the object of the invention is to further develop a machine tool separating device of the type mentioned.
  • the guide unit has at least one segment guide element for guiding the cutting strand, which is intended to allow movement of the cutting strand in a direction away from the guide unit, at least along a direction at least substantially parallel to a cutting plane of the cutting strand limit.
  • a "cutting strand” is to be understood here as meaning, in particular, a unit which is intended to locally neutralize an atomic cohesion of a workpiece to be machined, in particular by means of a mechanical severing and / or by means of a mechanical removal of material particles of the workpiece.
  • the cutting strand is intended to separate the workpiece into at least two physically separate parts and / or at least partially separate material particles of the workpiece, starting from a surface of the workpiece and / or remove.
  • a “management unit” should be understood here to mean in particular a unit which is intended to exert a constraining force on the cutting strand at least along a direction perpendicular to a cutting direction of the cutting strand, in order to provide a possibility of movement of the cutting strand along the cutting direction.
  • "intended” should be understood to mean in particular specially designed and / or specially equipped.
  • the guide unit has at least one guide element, in particular a guide groove, through which the cutting strand is guided.
  • the cutting strand viewed in a cutting plane, guided along an entire circumference of the guide unit by the guide unit by means of the guide element, in particular the guide groove.
  • cutting plane should in particular define a plane in which the cutting strand is moved along a circumference of the guide unit in at least two mutually oppositely directed cutting directions relative to the guide unit.
  • the cutting plane is aligned at least substantially transversely to a machined workpiece surface when machining a workpiece.
  • at least substantially crosses is to be understood here in particular as an alignment of a plane and / or a direction relative to a further plane and / or a further direction, which preferably results from a parallel orientation of the plane and / or the direction relative to the other Level and / or the other direction deviates.
  • the cutting plane is aligned at a machining of a workpiece at least substantially parallel to a machined workpiece surface, in particular when forming the cutting strand as an abrasive, etc.
  • a "cutting direction” is to be understood here as meaning, in particular, a direction along which the cutting strand is used to produce a cutting gap and / or for separating and / or removing material particles of a workpiece to be machined in at least one operating state as a result of a drive force and / or a drive torque, especially in the guide unit, is moved.
  • the cutting strand is moved in an operating state along the cutting direction relative to the guide unit.
  • the cutting strand and the guide unit form a closed system.
  • the term "closed system” is intended to define a system comprising at least two components that retain functionality and / or disassemble functionality by interacting in a disassembled state of the system from a higher-level system such as a machine tool State are permanently connected to each other.
  • the at least two components of the closed system are at least substantially inseparably connected with each other for an operator.
  • at least substantially insoluble should be understood in particular a combination of at least two components that only with the aid of separation tools, such as a saw, in particular a mechanical saw, etc., and / or chemical release agents, such as solvents, etc. , are separable from each other.
  • segment guide element is intended here to define, in particular, an element which is intended to guide at least the segment as a result of direct contact with a segment of the cutting strand, in particular with a cutting carrier element of the cutting strand and at least one movement of the segment as a result of the direct contact Viewing the segment, in particular in a state of the cutting strand cut free from further segments of the cutting strand, in the cutting plane along at least the direction away from the guide unit.
  • the segment guide element is formed integrally with the guide unit.
  • the machine tool separating device preferably has at least one further segment guide element.
  • the segment guide elements are preferably each arranged in a partial region of the guide unit, wherein the partial regions lie opposite one another in the cutting plane or extend at least substantially parallel to the cutting plane.
  • the Segment arrangementelemen is inventively designed as an extension, which is arranged on the guide unit, in particular on an outer wall of the guide unit.
  • Machine tool separating device can be achieved, in which the cutting strand is securely guided in the guide unit, in particular in a portion of the guide unit in which the segment guide element is arranged.
  • the guide unit viewed in the cutting plane, has a self-contained outer contour which has two parallel straight lines and at least two circular arcs connecting the straight lines to one another.
  • the circular arcs are formed by two convex ends of the guide unit.
  • a "convex end” is to be understood here as meaning, in particular, a geometric shape of at least one region of the guide unit, the region being designed to bulge outward from the guide unit.
  • the circular arcs of the guide unit formed by convex ends are arranged along two main sides of the guide unit along a main extension direction of the guide unit.
  • a "main extension direction” is to be understood here in particular as a direction along which the guide unit, in particular together with the mounted cutting strand, has a maximum extension.
  • the segment guide element is arranged at least in the region of one of the at least two straight lines of the outer contour on the guide unit. At least one segment guide element is preferably arranged on each of the two straight lines of the outer contour.
  • the cutting strand, in particular blade carrier elements of the cutting strand, in a region of the circular arcs of the outer contour, viewed in the cutting plane, move in the guide groove of the guide unit in a direction facing away from the guide unit, in particular in one of further
  • Cutting support elements of the cutting strand freely cut state of the cutting strand considered.
  • the circular arcs are particularly preferably decoupled from the segment guide element formed. It can advantageously be achieved a high level of security against pulling out of the cutting strand in the region of the straight line of the outer contour of the guide unit during operation of the power-tool parting device.
  • the tool-maker separating device has at least one segment guide element which, viewed along a direction perpendicular to the cutting plane, opposite the outer surface of the guide unit extending parallel to the cutting plane from the first parallel to the first outer surface extending outer surface of the guide unit extending segment guide element the guide unit is arranged.
  • a segment guide element can be achieved structurally simple, which is intended to advantageously limit a movement of the cutting strand in a direction directed away from the guide unit and perpendicular to the main extension direction in the cutting plane.
  • the segment guide element is designed as an extension which is arranged on at least one inner wall of the guide unit.
  • an “inner wall of the leadership unit” should here in particular a surface of the guide unit are understood, which faces the cutting strand in a arranged in the guide unit state of the cutting strand.
  • the inner wall and the cutting strand preferably touch each other at least temporarily during a movement of the cutting strand relative to the guide unit.
  • the inner wall is preferably provided as a guide surface for the cutting strand.
  • the segment guide element is at least partially formed by the inner wall of the guide unit.
  • the segment guide element is formed by means of a stamping process on the guide unit.
  • segment guide element is formed on the guide unit by means of another method that appears appropriate to a person skilled in the art.
  • segment guide element has another, to a professional appear appropriate design, such as a configuration as a rib, as a groove, etc.
  • the segment guide element extends at least substantially parallel to a main extension direction of the guide unit.
  • the main extension direction preferably extends from a circular arc of the outer contour of the guide unit to a further circular arc of the outer contour.
  • the guide unit comprises at least two segment guide elements.
  • the guide unit is decoupled from the segment guide elements.
  • the guide unit has a segment guide element.
  • the cutting strand has at least one cutter carrier element which has at least one segment counter-guide element which corresponds to the segment guide element of the guide unit.
  • the cutting strand on a plurality of cutter support elements.
  • a person skilled in the art will select, in particular depending on the application, a suitable number of cutter carrier elements for the cutting strand.
  • each cutter carrier element of the cutting strand of the power-tool parting device has at least one segment counter-guide element, which is intended to move the cutter carrier element in a state arranged in a guide unit in a direction away from the guide unit, at least along one at least substantially parallel to a cutting plane
  • the direction of the cutting strand extending direction to limit, in particular by means of cooperation with the at least one segment guide element of the guide unit
  • the segment counter guide element is formed as a transverse extension of the at least one cutter support element which extends at least substantially perpendicular to a cutting plane of the cutting strand.
  • the transverse extension defines a longitudinal groove into which the segment guide element engages in a state of the cutting strand arranged in the guide unit.
  • the segment counter-guide element engages in a movement limitation of the cutter support element in a segment guide element of the guide unit designed as a groove.
  • the segment guide element has another, a skilled person appear appropriate design, such as a configuration as a rib, as a groove, etc.
  • the cutting strand has at least one cutter support element, which at least in one operating state, along at least substantially Viewed parallel to the cutting plane and at least substantially perpendicular to one of the at least two straight lines of the outer contour extending direction, with at least a portion of the cutter support member between a portion of a guide element of the guide unit and the segment guide element is arranged.
  • the term "between” should in particular define a spatial arrangement of a component along at least one direction between two subregions of another component or between two further components, wherein preferably at least one straight line exists along the direction that the component and the two subregions of the further component or the component and the two other components intersect.
  • the power-tool parting device comprises at least one torque-transmitting element which is at least partially mounted in the guide unit.
  • the torque transmission element is at least partially surrounded along at least one direction by outer walls of the guide unit.
  • the torque transmission element has a concentric coupling recess into which a pinion of a drive unit of a portable power tool and / or a gear and / or a toothed shaft of a gear unit of the portable power tool can engage in an assembled state / can.
  • the coupling recess is in this case preferably formed by a hexagon socket.
  • the coupling recess it is also conceivable for the coupling recess to have another configuration that appears appropriate to a person skilled in the art.
  • the guide unit is decoupled from the torque transmitting element and instead has a recess into which a drive element of a portable power tool on which the power tool separating device can be arranged, to drive the cutting strand in a coupled state insertable is to cooperate directly with the cutting strand, in particular with cutter support elements of the cutting strand, which comprise a drive surface corresponding to the drive element and / or drive recess.
  • a closed system can be achieved in a structurally simple manner, which is conveniently achieved by an operator can be mounted on a dedicated machine tool.
  • the cutting strand on at least one cutter support member having on a torque transmitting element facing side of the cutter support member at least one recess into which engages the torque transmitting element in at least one operating state for driving the cutting strand.
  • all cutter support elements of the cutting strand on the torque transmitting element facing sides of the cutter support elements at least one recess into which engages the torque transmitting element in at least one operating state for driving the cutting strand. It can structurally simple forces and / or torques are transmitted to drive the cutting strand to the cutter support element.
  • the cutter support element is at least substantially circular-arc-shaped, at least on the side facing the torque-transmitting element.
  • the side of the cutter support element facing the torque transmission element in an assembled state is designed in a circular arc shape, in particular in at least one subregion, between a central axis of a connecting element arranged in and / or on the cutter carrier element and a center axis of a connecting recess of the cutter carrier element for receiving the connecting element.
  • the arcuate portion is adjacent to the recess into which the torque transmitting element engages formed.
  • the circular-arc-shaped partial region has a radius which corresponds at least essentially to a radius of a deflection contour of the guide unit, in particular a deflection contour of a guide element of the guide unit arranged on a convex end.
  • the torque transmitting element in a mounted state facing side of the cutter support element, in particular the subregion is concave. It may advantageously be a deflection of the cutter support element in an operation of the power tool separating device be achieved. Furthermore, advantageously, a small deflection radius can be realized during a deflection of the cutter support element.
  • the invention is based on a portable power tool with a coupling device for positive and / or non-positive coupling with a machine tool separating device according to the invention.
  • a "portable machine tool” is to be understood here in particular as meaning a machine tool, in particular a hand tool machine, which can be transported without transport machine by an operator.
  • the portable power tool has a mass which is less than 40 kg, preferably less than 10 kg and particularly preferably less than 5 kg.
  • the machine tool separating device according to the invention and the portable machine tool according to the invention particularly preferably form a machine tool system. It can be advantageously achieved a portable machine tool, which is particularly advantageous for a wide range of applications.
  • FIG. 1 shows a portable power tool 56a with a power tool separating device 10a, which together form a power tool system.
  • the portable power tool 56a has a coupling device 58a for the positive and / or non-positive coupling with the power-tool parting device 10a.
  • the coupling device 58a can be designed as a bayonet closure and / or as another coupling device that appears meaningful to a person skilled in the art.
  • the portable power tool 56a has a machine tool housing 60a enclosing a drive unit 62a and a gear unit 64a of the portable power tool 56a.
  • the drive unit 62a and the gear unit 64a are operatively connected together in a manner already known to a person skilled in the art in order to generate a drive torque which can be transmitted to the power-tool parting device 10a.
  • the gear unit 64a is formed as an angle gear.
  • the drive unit 62a is designed as an electric motor unit. However, it is also conceivable for the drive unit 62a and / or the gear unit 64a to have another configuration that appears appropriate to a person skilled in the art.
  • the drive unit 62a is provided to drive a cutting strand 12a of the power-tool parting device 10a in at least one operating state with a cutting speed of less than 6 m / s.
  • the portable power tool 56a has at least one operating mode in which a drive of the cutting strand 12a in a guide unit 14a of the power-tool parting device 10a along a cutting direction 66a of the cutting strand 12a with a cutting speed less than 6 m / s is made possible.
  • FIG. 2 shows the power tool separating device 10a in a decoupled from the coupling device 58a of the portable power tool 56a state.
  • the machine tool separating device 10a has the cutting strand 12a and the guide unit 14a, which together form a closed system.
  • the guide unit 14a is formed as a sword.
  • the guide unit 14a viewed in a cutting plane, a self-contained outer contour, the two mutually at least substantially parallel lines 28a, 30a and two lines 28a, 30a interconnecting circular arcs 32a, 34a.
  • the circular arcs 32a, 34a are formed by two convexly shaped ends 68a, 70a of the guide unit 14a.
  • the convexly shaped ends 68a, 70a of the guide unit 14a, viewed along a main extension direction 72a of the guide unit 14a, are arranged on two opposite sides of the guide unit 14a.
  • the guide unit 14a has at least one guide element 44a (FIG. FIG. 5 ), by means of which the cutting strand 12a is guided.
  • the guide member 44a is formed here as a guide groove 76a which extends in the cutting plane of the cutting strand 12a along an entire circumference of the guide unit 14a.
  • the cutting strand 12a is guided by means of the guide groove 76a bounding edge regions of the guide unit 14a.
  • the guide element 44a is formed in another manner that appears appropriate to a person skilled in the art, such as, for example, rib-like molding on the guide unit 14a, which engages in a recess on the cutting strand 12a.
  • the cutting strand 12a viewed in a plane perpendicular to the cutting plane, is surrounded on three sides by the edge regions delimiting the guide groove 76a ( FIG. 5 ). The cutting strand 12a is circumferentially moved in the guide groove 76a relative to the guide unit 14a during operation.
  • the guide unit 14a has four segment guide elements 16a, 18a, 20a, 22a for guiding the cutting strand 12a, two of the four segment guide elements 16a, 18a, 20a, 22a being provided for movement of the cutting strand 12a in one of the guide unit 14a facing away, along each one at least substantially parallel to the cutting plane of the cutting strand 12a extending direction 24a, 26a to limit ( FIG. 5 ).
  • the directions 24a, 26a along each of the two of the four segment guide elements 16a, 18a, 20a, 22a limit movement of the cutting strand 12a in a direction away from the guide unit 14a, in each case run at least substantially perpendicular to the straight lines 28a, 30a of the outer contour of Guide unit 14a.
  • two of the four segment guide elements 16a, 18a, 20a, 22a are arranged in a region of one of the two straight lines 28a, 30a of the outer contour on the guide unit 14a.
  • two of the four segment guide members 16a, 18a, 20a, 22a are disposed in a portion of the guide unit 14a in which the cutting string 12a is in an operative state of rotating the cutting strand 12a in the cutting direction 66a along the circumference of the guide unit 14a along the main extension direction 72a is moved in a direction away from the portable power tool 56a direction.
  • two of the four segment guide elements 16a, 18a, 20a, 22a are in one Part of the guide unit 14a arranged in which the cutting strand 12a is moved in an operating state with a circumferential movement of the cutting strand 12a in the cutting direction 66a along the circumference of the guide unit 14a, along the main direction of extension 72a, in a direction of the portable power tool 56a facing direction.
  • the four segment guide elements 16a, 18a, 20a, 22a are provided to hold the cutting strand 12a in regions of the straight lines 28a, 30a of the outer contour in the guide groove 76a.
  • the four segment guide elements 16a, 18a, 20a, 22a are formed integrally with the guide unit 14a.
  • Two of the four segment guide members 16a, 18a, 20a, 22a are integrally formed with one of two outer walls 80a, 82a of the guide unit 14a, respectively.
  • the segment guide elements 16a, 18a, 20a, 22a viewed along the directions perpendicular to the straight lines 28a, 30a of the outer contour extending directions 24a, 26a, each disposed on opposite sides of the outer walls 80a, 82a.
  • the four segment guide elements 16a, 18a, 20a, 22a are formed separately from the guide unit 14a and the like, for example by means of a latching connection.
  • Two of the four segment guide elements 16a, 18a, 20a, 22a, which are integrally formed with one of the outer walls 80a, 82a extend in each case from a first parallel to the cutting plane extending outer surface 36a of the guide unit 14a in the direction of another offset parallel to the first outer surface 36a Outer surface 38a of the guide unit 14a.
  • the two further of the four segment guide elements 16a, 18a, 20a, 22a extend from the further outer surface 38a in the direction of the first outer surface 36a.
  • the outer surfaces 36a, 38a are in this case formed by the outer walls 80a, 82a of the guide unit 14a.
  • the four segment guide elements 16a, 18a, 20a, 22a are formed as extensions, which are formed integrally with the outer walls 80a, 82a. Further, the four segment guide members 16a, 18a, 20a, 22a each extend, along the main extension direction 72a of the guide unit 14a, along an entire extent of the respective straight lines 28a, 30a of the outer contour to the circular arcs 32a formed by the convex ends 68a, 70a , 34a.
  • the power-tool parting device 10a has a torque transmission element 46a at least partially supported by the guide unit 14a for driving the cutting strand 12a.
  • the torque transmission element 46a is in a coupled state for driving the cutting strand 12a with a pinion (not shown here) of the drive unit 62a and / or a gear (not shown here) and / or a toothed shaft (not shown here) of the gear unit 64a coupled.
  • the torque transmission element 46a has a coupling recess 78a, which in a mounted state can be coupled to a drive element of the portable power tool 56a.
  • the coupling recess 78a is concentrically disposed in the torque transmitting member 46a.
  • the coupling recess 78a is provided, in a coupled state of the torque transmitting member 46a and / or the power tool separating device 10a with the pinion (not shown here) of the drive unit 62a and / or the gear (not shown here) and / or the toothed shaft (not shown in detail here) of the gear unit 64a to be coupled.
  • the coupling recess 78a is formed as a hexagon socket. However, it is also conceivable for the coupling recess 78a to have another configuration that appears appropriate to a person skilled in the art.
  • the cutting strand 12a comprises a plurality of interconnected cutter support elements 40a, 42a, each interconnected by a connecting element 84a, 86a of the cutting strand 12a, which is at least substantially flush with one of two outer surfaces 88a, 90a of one of the interconnected cutter support elements 40a, 42a ( Figures 3 and 5).
  • the outer surfaces 88a, 90a extend in a state arranged in the guide groove 76a of the cutting strand 12a at least substantially parallel to the cutting plane.
  • a person skilled in the art will select a suitable number of cutter carrier elements 40a, 42a for the cutting strand 12a.
  • the cutter support elements 40a, 42a are each formed integrally with one of the connecting elements 84a, 86a.
  • the connecting elements 84a, 86a are bolt-shaped. Furthermore, the cutter support elements 40a, 42a each have a connecting recess 92a, 94a for receiving one of the connecting elements 84a, 86a of the interconnected cutter support elements 40a, 42a.
  • the connecting elements 84a, 86a are guided by the guide unit 14a ( FIG. 5 ). in this connection
  • the connection elements 84a, 86a are arranged in the guide groove 76a.
  • the connecting elements 84a, 86a can, viewed in a plane perpendicular to the cutting plane, be supported on two side walls 96a, 98a of the guide groove 76a.
  • the side walls 96a, 98a of the guide groove 76a extend outward from the guide unit 14a, perpendicular to the cutting direction 66a of the cutting strand 12a.
  • the cutter carrier elements 40a, 42a are in an operating state in regions of the guide unit 14a, in each of which two of the four segment guide elements 16a, 18a, 20a, 22a are arranged on the guide unit 14a, along one at least substantially parallel to the cutting plane and at least substantially perpendicular to one of the two straight lines 28a, 30a of the outer contour extending direction, each with a portion of the cutter support members 40a, 42a between a formed as a guide groove 76a guide member 44a defining edge portion 74a of the guide unit 14a and one of the four segment guide elements 16a, 18a, 20a, 22a arranged.
  • the cutter support elements 40a, 42a in an operating state in areas of the guide unit 14a, in which the segment guide elements 16a, 18a, 20a, 22a are arranged on the guide unit 14a, respectively in the portion of the cutter support elements 40a, 42a along at least substantially parallel Cutting plane and at least substantially perpendicular to one of the two straight lines 28a, 30a of the outer contour extending direction of the guide groove 76a bounding edge region of the guide unit 14a and one of the four segment guide elements 16a, 18a, 20a, 22a surrounded.
  • the blade carrier elements 40a, 42a in an operating state in regions of the guide unit 14a, in which the segment guide elements 16a, 18a, 20a, 22a are arranged on the guide unit 14a, respectively in two mutually different subregions along the at least substantially parallel to the cutting plane and at least substantially perpendicular to one of the two lines 28a, 30a of the outer contour extending direction of the guide groove 76a bounding edge region of the guide unit 14a and one of the four segment guide elements 16a, 18a, 20a, 22a surrounded.
  • the cutter support elements 40a, 42a are held in the guide groove 76a by means of the four segment guide elements 16a, 18a, 20a, 22a in regions of the straight lines 28a, 30a of the outer contour.
  • the cutter support elements 40a, 42a of the cutting strand 12a each have a recess 52a, 54a, which is in each case arranged in an assembled state on a torque transmitting element 46a facing side 48a, 50a of the respective cutter support member 40a, 42a.
  • the torque transmission element 46a engages in the recesses 52a, 54a in at least one operating state for driving the cutting strand 12a.
  • the torque transmission element 46a is formed here as a gear.
  • the torque transmitting element 46a includes teeth (not shown in detail here) which are intended to engage in at least one operating state for driving the cutting strand 12a into the recesses 52a, 54a of the cutter support elements 40a, 42a.
  • the torque transmitting member 46a facing sides 48a, 50a of the cutter support members 40a, 42a are circular arc-shaped.
  • the torque-transmitting element 46a facing in an assembled state sides 48a, 50a of the cutter support members 40a, 42a are respectively in portions 100a, 102a, 104a, 106a, between a central axis 108a of the respective connecting element 84a, 86a and a central axis 110a, 112a of the respective connecting recess 92a 94a, designed in a circular arc.
  • the arcuate portions 100a, 102a, 104a, 106a are respectively formed adjacent to the recesses 52a, 54a engaged by the torque transmitting member 46a.
  • the circular-arc-shaped partial regions 100a, 102a, 104a, 106a have a radius which corresponds to a radius of a profile of the guide groove 76a at the convex ends 68a, 70a.
  • the subareas 100a, 102a, 104a, 106a are concave ( FIGS. 3 and 4 ).
  • the cutting strand 12a has cutting elements 114a, 116a.
  • the cutting elements 114a, 116a are each formed integrally with one of the cutter support elements 40a, 42a.
  • a number of the cutting elements 114a, 116a are dependent on a number of cutter support elements 40a, 42a.
  • a person skilled in the art will select a suitable number of cutting elements 114a, 116a depending on the number of cutter carrier elements 40a, 42a.
  • the cutting elements 114a, 116a are provided to allow a separation and / or removal of material particles of a workpiece to be machined (not shown here).
  • the cutting elements 114a, 116a for example, as a full chisel, semi-chisel or others, to a person skilled in sense appearing cutting types may be formed, which are intended to enable a separation and / or removal of material particles of a workpiece to be machined.
  • the cutting strand 12a is endless.
  • the cutting strand 12a is formed as a cutting chain.
  • the cutter support elements 40a, 42a are in this case designed as chain links which are connected to one another by means of the bolt-shaped connecting elements 84a, 86a.
  • the cutting strand 12a, the cutter support elements 40a, 42a and / or the connecting elements 84a, 86a are configured in another manner that appears appropriate to a person skilled in the art.
  • FIGS. 6 to 8 is the inventive machine tool separating device.
  • Substantially identical components, features and functions are basically numbered by the same reference numerals. To distinguish the examples, the letters a and b are added to the reference numerals of the examples. The following description is essentially limited to the differences from the first example in FIGS FIGS. 1 to 5 , with respect to the same components, features and functions on the description of the first example in the FIGS. 1 to 5 can be referenced.
  • FIG. 6 shows the power tool separating device 10b in a decoupled from a coupling device of the portable power tool (not shown here) state.
  • the machine tool separating device 10b has a cutting strand 12b and a guide unit 14b, which together form a closed system.
  • the guide unit 14b is designed as a sword.
  • the guide unit 14b viewed in a cutting plane, a self-contained outer contour, which is at least substantially formed as Lamesches oval.
  • the outer contour comprises at least two elongated sides which are interconnected by means of two circular arcs 32b, 34b. In this case, the elongated sides, starting from the guide unit 14b, are convex in a direction away from the guide unit 14b.
  • the circular arcs 32b, 34b are formed by two convexly shaped ends 68b, 70b of the guide unit 14b.
  • the convex-shaped ends 68b, 70b of the guide unit 14b are contiguous with each other along a main extension direction 72b of the guide unit 14b facing away from the guide unit 14b.
  • the cutting strand 12b is guided by means of the guide unit 14b.
  • the guide unit 14b in this case has at least one segment guide element 16b for guiding the cutting strand 12b, which is intended to move the cutting strand 12b in a direction away from the guide unit 14b, at least along at least one substantially parallel to a cutting plane of the cutting strand 12b extending direction 24b, 26b to limit.
  • the segment guide element 16b extends, starting from a first outer surface 36b of the guide unit 14b running parallel to the cutting plane, in the direction of a further outer surface 38b of the guide unit 14b extending parallel to the first outer surface 36b ( FIG. 7 ).
  • a portion of the outer surface 36b is bent in the direction of the further outer surface 38b.
  • the segment guide member 16b extends into a guide groove 76b of the guide unit 14b.
  • the segment guide element 16b is formed as an extension, which is arranged on at least one inner wall of the guide unit 14b.
  • the inner wall of the guide unit 14b limits in this case the guide groove 76b of the guide unit 14b, by means of which the cutting strand 12b is guided.
  • the inner wall of the guide unit 14b forms at least one side wall 96b of the guide groove 76b.
  • the guide unit 14b has at least two segment guide elements 16b, 22b.
  • the segment guide elements 16b, 22b extend, starting from the first outer surface 36b of the guide unit 14b extending parallel to the cutting plane, in the direction of the further outer surface 38b of the guide unit 14b extending parallel to the first outer surface 36b.
  • the machine tool parting device 10b it is also conceivable for the machine tool parting device 10b to additionally have at least one or two segment guide elements on the further outer surface 38b, which are provided for monitoring a movement of the cutting strand 12b in a direction away from the guide unit 14b, at least along at least one to limit substantially parallel to a cutting plane of the cutting strand 12b extending direction 24b, 26b.
  • the segment guide elements 16b, 22b are introduced into the first outer surface 36b by means of a stamping process.
  • the segment guide elements 16b, 22b may be attached to the guide unit by means of another method that appears appropriate to a person skilled in the art 14b are introduced, such as by means of a forming process, which is intended to form by means of a punch and a die rib-like segment guide elements to the guide unit 14b.
  • the segment guide members 16b, 22b are partially disposed on the inner wall of the guide unit 14b.
  • each of the segment guide elements 16b, 22b includes web-like segment guide portions (not shown here).
  • the guide unit 14b additionally or alternatively has a plurality of segment guide elements arranged spaced apart from one another along a longitudinal direction of the guide unit 14b on the inner wall.
  • the cutting strand 12b has at least one cutter support element 40b, which comprises at least one segment counter-guide element 124b, which is intended to observe a movement of the cutter carrier element 40b in a state arranged in the guide unit 14b of the power-tool parting device 10b, in a direction away from the guide unit 14b to limit at least along the at least substantially parallel to the cutting plane of the cutting strand 12b extending direction 24b, 26b.
  • the segment counter-guide element 124b is formed by a transverse extension, which extends at least substantially perpendicular to the cutting plane of the cutting strand 12b.
  • the segment counter-guide member 124b defines a longitudinal groove.
  • the segment counter-guide element 124b is provided to cooperate with a movement limitation with the segment guide elements 16b, 22b which are arranged on the guide unit 14b and which are formed corresponding to the segment counter-guide element 124b.
  • the segment counter-guide element 124b it is also conceivable for the segment counter-guide element 124b to have another configuration that appears appropriate to a person skilled in the art, such as a design as a rib, etc., which cooperates with a groove arranged on the guide unit 14b to limit the movement.
  • the cutting strand 12b has a plurality of cutter support elements 40b, 42b.
  • Each cutter support element 40b, 42b of the cutting strand 12b in this case comprises at least one segment counter-guide element 124b, which is provided for movement of the cutter support elements 40b, 42b in a state arranged in the guide unit 14b of the power-tool parting device 10b A direction away from the guide unit 14b direction considered to limit at least along at least substantially parallel to the cutting plane of the cutting strand 12b extending direction 24b, 26b.
  • each of the cutter support elements 40b, 42b has a pressure force transmission surface 128b (FIG. FIGS. 7 and 8 ).
  • the pressure force transmission surface 128b is provided to support pressure forces which act on the cutting strand 12b during machining of a workpiece (not shown here in detail) by means of cooperation with a pressure force receiving region 130b of the guide unit 14b.
  • the pressure-force receiving region 130b of the guide unit 14b is arranged between the outer surface 36b and the further outer surface 38b of the guide unit 14b when viewed along a direction extending at least substantially perpendicular to the cutting plane of the cutting strand 12b.
  • the cutter support member 40b of the cutting string 12c further includes a drive surface 126b which is adapted to cooperate with drive surfaces of a cutting member 12b having drive surfaces of a torque transmitting member 46b of the power tool separating apparatus 10b.
  • the drive surfaces of the torque transmission element 46b are formed here as tooth flanks.
  • the drive surface 126b of the cutter support member 40b is thus formed corresponding to the drive surfaces of the torque transmitting member 46b.
  • the cutter support elements 40b, 42b of the cutting strand 12b are connected to one another by means of at least one connecting element 84b of the cutting strand 12b, which terminates at least substantially flush with at least one outer surface 88b, 90b of one of the cutter support elements 40b, 42b ( FIG. 8 ).
  • the connecting element 84b projects beyond at least one of the outer surfaces 88b, 90b along a direction extending at least substantially perpendicular to the cutting plane.
  • the connecting element 84b when viewed along a transverse axis of the connecting element 84b, is flush with both outer surfaces 88b, 90b of one of the Cutter support elements 40b, 42b.
  • the transverse axis of the connecting element 84b extends in a mutually coupled state of the cutter support elements 40b, 42b at least substantially perpendicular to the cutting plane of the cutting strand 12b.
  • the connecting element 84b is formed integrally with one of the cutter support elements 40b, 42b.
  • the connecting element 84b is designed as a longitudinal extension of one of the cutter carrier elements 40b, 42b.
  • the connecting element 84b designed as a longitudinal extension extends at least substantially along a longitudinal extension of the cutter carrier element 40b, with which the connecting element 84b is integrally formed.
  • the connecting element 84b designed as a longitudinal extension thus extends at least substantially parallel to the cutting plane of the cutting strand 12b.
  • the longitudinal extension is hook-shaped.
  • each cutter support element 40b, 42b of the cutting strand 12b of the power-tool parting device 10b has in each case a connecting element 84b designed as a longitudinal extension (here only a cutting-carrier element 40b with a connecting element 84b) FIG. 8 illustrated for illustration) and in each case a correspondingly formed with the connecting element 84b connecting recess 92b.
  • the individual connecting elements 84b of the cutter support elements 40b, 42b are respectively provided for forming the cutting strand 12b designed as a cutting chain to realize a positive connection between the cutter support elements 40b, 42b by means of cooperation with a connecting recess 92b, by means of which the cutter support elements 40b, 42b are pivotable with each other are connected.
  • the connecting element 84b designed as a longitudinal extension has a transverse securing region 118b on one side.
  • the transverse securing region 118b is provided, by means of cooperation with at least one transverse securing element of a cutter carrier element 40b of the cutter carrier elements 40b, 42b, to move the cutter carrier elements 40b, 42b along at least two oppositely directed directions in a coupled state relative to one another at least as far as possible prevent.
  • the Transverse region 118b formed as a rib.
  • the transverse securing region 118b has another configuration which appears expedient to a person skilled in the art, such as a configuration as a groove, etc.
  • the transverse securing region 118b is arranged on a side of the connecting element 84b facing a cutting element 114b formed integrally with the cutter carrier element 40b ,
  • the cutter support elements 40b, 42b each have two transverse securing elements 120b, 122b, which are provided to cooperate in a coupled state of the cutter support elements 40b, 42b each with a transverse securing area.
  • the transverse securing elements 120b, 122b are each arranged in an edge region of the respective cutter carrier element 40b, 42b delimiting the connecting recess 92b.
  • the transverse securing elements 120b, 122b are formed integrally with the cutter carrier elements 40b, 42b.
  • the transverse securing elements 120b, 122b are integrally formed in each case by means of an embossing process to the respective cutter support element 40b, 42b.
  • the transverse securing elements 120b, 122b viewed along a direction extending at least substantially perpendicular to the cutting plane of the cutting strand 12b, extend as far as the outer surfaces 88b, 90b of the cutter support elements 40b, 42b.
  • the transverse securing elements 120b, 122b it is also conceivable for the transverse securing elements 120b, 122b to be integrally formed on the respective cutter support element 40b, 42b by means of another method appearing appropriate to a person skilled in the art, for example by means of a welding method, by means of an adhesive method, by means of a stamping method, by means of a bending method etc.
  • the two transverse securing elements 120b, 122b arranged on each of the cutter carrier elements 40b, 42b are arranged on sides of the cutter carrier elements 40b, 42b facing away from one another at least substantially perpendicular to the cutting plane of the cutting strand 12b.
  • the two transverse securing elements 120b, 122b arranged on each of the cutter carrier elements 40b, 42b are arranged offset relative to one another on the respective cutter carrier element 40b, 42b.
  • the transverse securing elements 120b, 122b, with respect to the cutting plane of the cutting strand 12b differ from a mirror-symmetrical Arrangement arranged on the cutter support elements 40b, 42b.
  • the transverse securing elements 120b, 122b are formed as partial extensions on an edge region of the connecting recess 92b.
  • the transverse securing elements 120b, 122b it is also conceivable for the transverse securing elements 120b, 122b to have another configuration and / or arrangement which appears expedient to a person skilled in the art, such as, for example, a design as parallel webs which has a groove-shaped recess in the edge region of the respective connecting recess 92b, viewed along a at least substantially perpendicular to the cutting plane of the cutting strand 12b extending direction limit.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Harvester Elements (AREA)

Claims (8)

  1. Dispositif de coupe pour machine-outil, en particulier dispositif de coupe pour machine-outil portative, avec au moins un fil de coupe (12b) et avec au moins une unité de guidage (14b), dans lequel l'unité de guidage (14b) présente au moins un élément de guidage à segments (16b, 22b) pour le guidage du fil de coupe (12b), qui est prévu pour limiter un mouvement du fil de coupe (12b), considéré dans une direction s'écartant de l'unité de guidage (14b), au moins le long d'une direction (24b, 26b) au moins essentiellement parallèle à un plan de coupe du fil de coupe (12b), caractérisé en ce que ledit au moins un élément de guidage à segments (16b, 22b) est réalisé sous forme de prolongement qui est disposé sur au moins une paroi intérieure de l'unité de guidage (14b).
  2. Dispositif de coupe pour machine-outil selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit au moins un élément de guidage à segments (16b, 22b) s'étend à partir d'une première face extérieure (36b) de l'unité de guidage (14b) orientée parallèlement au plan de coupe en direction d'une autre face extérieure (38b) de l'unité de guidage (14b) décalée parallèlement par rapport à la première face extérieure (36b).
  3. Dispositif de coupe pour machine-outil selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit au moins un élément de guidage à segments (16b, 22b) s'étend au moins essentiellement parallèlement à une direction d'extension principale (72b) de l'unité de guidage (14b).
  4. Dispositif de coupe pour machine-outil selon l'une quelconque des revendications précédentes, caractérisé en ce que le fil de coupe (12b) présente au moins un élément de support de couteau (40b, 42b), qui présente au moins un contre-élément de guidage à segments (124b) correspondant à l'élément de guidage à segments (16b, 22b) de l'unité de guidage (14b).
  5. Dispositif de coupe pour machine-outil selon la revendication 6, caractérisé en ce que le contre-élément de guidage de segment (124b) est réalisé sous forme de prolongement transversal dudit au moins un élément de support de couteau (40, 42b), qui s'étend au moins essentiellement perpendiculairement à un plan de coupe du fil de coupe (12b).
  6. Dispositif de coupe pour machine-outil selon l'une quelconque des revendications précédentes, caractérisé par au moins un élément de transmission de couple de rotation (46b), qui est monté au moins en partie dans l'unité de guidage (14b).
  7. Machine-outil portative comportant un mécanisme de couplage (58a) pour le couplage par emboîtement et/ou par adhérence avec un dispositif de coupe pour machine-outil selon l'une quelconque des revendications précédentes.
  8. Système de machine-outil avec une machine-outil portative selon la revendication 12 et avec au moins un dispositif de coupe pour machine-outil selon l'une des revendications 1 à 11.
EP12714211.5A 2011-03-03 2012-03-02 Dispositif d'une machine outil defini pour du coupage. Active EP2680994B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110005012 DE102011005012A1 (de) 2011-03-03 2011-03-03 Werkzeugmaschinentrennvorrichtung
PCT/EP2012/000950 WO2012116838A1 (fr) 2011-03-03 2012-03-02 Dispositif de sectionnement pour machine-outil

Publications (2)

Publication Number Publication Date
EP2680994A1 EP2680994A1 (fr) 2014-01-08
EP2680994B1 true EP2680994B1 (fr) 2016-05-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12714211.5A Active EP2680994B1 (fr) 2011-03-03 2012-03-02 Dispositif d'une machine outil defini pour du coupage.

Country Status (3)

Country Link
EP (1) EP2680994B1 (fr)
DE (1) DE102011005012A1 (fr)
WO (1) WO2012116838A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11311952B2 (en) 2018-01-31 2022-04-26 Milwaukee Electric Tool Corporation Reciprocating saw

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348612A (en) * 1941-02-20 1944-05-09 William H Deacon Power saw
JPS61136774A (ja) * 1984-12-06 1986-06-24 Oomi Kogyo Kk 切削工具のセグメントの取付け方法
US5184598A (en) * 1991-07-15 1993-02-09 Blount, Inc. Saw chain for aggregate materials
US20070169605A1 (en) * 2006-01-23 2007-07-26 Szymanski David A Components having sharp edge made of sintered particulate material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11311952B2 (en) 2018-01-31 2022-04-26 Milwaukee Electric Tool Corporation Reciprocating saw

Also Published As

Publication number Publication date
DE102011005012A1 (de) 2012-09-06
EP2680994A1 (fr) 2014-01-08
WO2012116838A1 (fr) 2012-09-07

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