EP2869974B1 - Depth cut limiting device - Google Patents

Depth cut limiting device Download PDF

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Publication number
EP2869974B1
EP2869974B1 EP13726738.1A EP13726738A EP2869974B1 EP 2869974 B1 EP2869974 B1 EP 2869974B1 EP 13726738 A EP13726738 A EP 13726738A EP 2869974 B1 EP2869974 B1 EP 2869974B1
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EP
European Patent Office
Prior art keywords
stop
guide
cutting
fixing
limiting device
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
EP13726738.1A
Other languages
German (de)
French (fr)
Other versions
EP2869974A1 (en
Inventor
Bruno Sinzig
Christian Ackermann
Laurent Gribi
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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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2869974A1 publication Critical patent/EP2869974A1/en
Application granted granted Critical
Publication of EP2869974B1 publication Critical patent/EP2869974B1/en
Active legal-status Critical Current
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B9/00Portable power-driven circular saws for manual operation
    • B27B9/02Arrangements for adjusting the cutting depth or the amount of tilting

Definitions

  • Cutting depth limiting devices as claimed in the preamble of claim 1 are already known for portable power tools having a cutting depth guide unit and a stop unit, the stop unit having a movably mounted stop element and at least one fixing element for fixing the stop element in at least one position, wherein the stop unit comprises a Vorposition michselement which acts on the fixing element in at least one state in the direction of a release position of the fixing with a force.
  • a cutting depth limiting device is in EP 1 777 047 A1 already described.
  • the invention is based on a cutting depth limiting device for portable machine tools, with at least one cutting depth guide unit and with at least one stop unit having at least one movably mounted stop element and at least one fixing element for fixing the stop element in at least one position.
  • the pre-positioning element preferably acts upon the fixing element at least in a state of the stop element that is unloaded from a machine tool housing of the portable machine tool.
  • the pre-positioning element acts on the fixing element in a direction away from a guide element of the cutting depth guide unit.
  • the pre-positioning element preferably also acts on the fixing element a force in the direction of the machine tool housing.
  • depth of cut limiting device is intended here to define, in particular, a device which is intended to delimit an immersion path of a machining tool, in particular a circular saw blade, connected to a tool holder of a portable machine tool into a workpiece to be machined and / or to set a length of the immersion section, in particular by means of the stop unit.
  • the immersion path of the machining tool into a workpiece to be machined is considered, in particular, along a direction running at least substantially perpendicular to a contact surface of a supporting unit of the portable machine tool with which the portable machine tool rests on a workpiece surface of a workpiece to be machined.
  • substantially perpendicular is intended here to define, in particular, an orientation of a direction relative to a reference direction, the direction and the reference direction, in particular in one plane, including an angle of 90 Ā° and the angle a maximum deviation of, in particular, less than 8 Ā°, advantageously less than 5 Ā° and particularly advantageously less than 2 Ā°.
  • cutting depth guide unit is intended here to define, in particular, a unit which is provided to guide a component transversely to a movement direction along a predetermined path by means of an action of at least one constraining force.
  • a ā€œconstraining forceā€ is to be understood here in particular as meaning a force which is intended to prevent a component from moving in at least one direction and / or the component to move on a path predetermined by means of an action of the force on the component hold.
  • a movement distance of the tool holder and / or the machine tool housing in the direction of the support unit is limited relative to the support unit and / or set a length of the movement path of the tool holder and / or the machine tool housing in the direction of the support unit relative to the support unit by means of an interaction of the cutting depth guide unit and the stop unit.
  • a length of the movement path of the tool holder and / or the machine tool housing are adjusted in the direction of the support unit relative to the support unit.
  • a "support unitā€ is to be understood here in particular as a unit which rests on the workpiece during machining of a workpiece by means of the portable machine tool during proper handling of the portable machine tool, in particular with a support surface of the support unit.
  • the support unit is intended to support the portable power tool during a machining of the workpiece on the workpiece.
  • the support unit is designed as a sliding block and / or as a base plate.
  • movably mounted is to be understood here in particular as a mounting of the stop element on the guide element, wherein the stop element, in particular decoupled from an elastic deformation of the stop element, a movement possibility relative to the Thomastiefen Entrysech along at least one axis along a distance greater than 1 mm, preferably greater than 10 mm and more preferably greater than 20 mm.
  • the stop element alternatively or additionally another, a person skilled in the sense of appearing movement possibility, in particular relative to the guide element has, such as a possibility of movement about at least one axis by an angle greater than 10 Ā°, preferably greater than 20 Ā° and more preferably greater than 30 Ā°.
  • the movement axis of the stop element extends at least substantially parallel or at least substantially transversely to a cutting depth guide track of the guide element.
  • the stop element is mounted movably relative to the guide element.
  • substantially parallel is to be understood here as meaning, in particular, an alignment of a direction relative to a reference direction, in particular in a plane, wherein the direction relative to the reference direction is a deviation, in particular less than 8 Ā°, advantageously less than 5 Ā° and particularly advantageously less than 2 Ā° and in particular identical to the reference direction.
  • the term "at least substantially transverselyā€ is intended here to define, in particular, an orientation of a direction relative to a reference direction, the direction and the reference direction, viewed in particular in one plane, having mutually different courses and in particular also of purely opposite courses of the direction and the reference direction are different.
  • the fixing element is preferably designed as a positive locking element.
  • the fixing element is designed as a locking latch extension.
  • the fixing element has another, to a professional appear appropriate design, such as a configuration as a recess, which cooperates with a corresponding latching extension.
  • the fixing element is formed integrally with the stop element.
  • one piece should be understood in particular at least materially connected connected, for example, by a welding process, a gluing process, a Anspritzrea and / or another, the skilled person appear useful process, and / or advantageously formed in one piece, such as by a Manufacture from a casting and / or by a production in a one- or multi-component injection molding process and advantageously from a single blank.
  • the fixing element designed as a locking catch extension acts in at least one position to fix the stop element together in at least one position relative to the guide element with at least one latching track of the guide element.
  • the fixing element in particular in a blocking position of the fixing element, fixes the stop element at least in a position relative to the guide element.
  • release position is intended here to define, in particular, a position of the fixing element in which the fixing element is out of engagement with a counterfixing element which corresponds to the fixing element and / or in which the fixing element is in contact with a counterfixing element corresponding to the fixing element.
  • the stop element is preferably movable relative to the guide element for setting a depth of cut.
  • the fixing element is moved by a movement of the machine tool housing in the direction of the fixing or by a force of the machine tool housing on the fixing in a locking position of the fixing, in which the fixing element fixes the stop element in at least one position relative to the guide element.
  • the pre-positioning element moves the fixing element away from at least one latching track of the guide element of the cutting depth guide unit.
  • the Vorposition michselement moves the fixing at least in an unloaded from the machine tool housing of the portable power tool state of the stop element away from the detent track of the guide element.
  • the Vorposition rĆ©elleselement moves the fixing due to a repeal of a force of the machine tool housing on the fixing of a locking track of the guide element away.
  • an automatic transfer of the fixing element can advantageously be achieved starting from a blocking position of the fixing element into a release position of the fixing element.
  • a comfortable setting of a desired cutting depth can be achieved, which is decoupled from a separate operation of the fixing element to achieve a mobility of the stop element relative to the guide element.
  • the Vorposition istselement is mounted movably relative to the stop element. It can be ensured during a movement of the stop element advantageously a cooperation of the Vorposition michselements with a corresponding with the Vorposition michselement Gegenpositiontechnikselement. Thus, advantageously a reliable pre-positioning of the stop element can be achieved.
  • the stop element comprises at least one receiving recess, in which the Vorposition michselement is at least partially disposed. It can be beneficial a compact arrangement of Vorposition michselements be achieved. Thus, advantageous space can be saved and it can be achieved a compact cutting depth limiting device.
  • the Vorposition michselement is designed as a spring-loaded locking pin.
  • the stop unit comprises at least one spring element, which acts on the Vorposition michselement with a spring force, in particular with a spring force in a direction away from the stop element direction.
  • a "spring elementā€ is to be understood in particular as a macroscopic element which has at least one extension that is elastically changeable by at least 10%, in particular by at least 20%, preferably by at least 30% and particularly advantageously by at least 50% in a normal operating state , And in particular generates a dependent on a change in the extension and preferably proportional to the change counterforce, which counteracts the change.
  • an ā€œextensionā€ of an element should, in particular, be understood to mean a maximum distance between two points of a vertical projection of the element onto a plane.
  • a ā€œmacroscopic elementā€ is meant in particular an element with an extension of at least 1 mm, in particular of at least 5 mm and preferably of at least 10 mm.
  • the spring element is designed as a compression spring.
  • the spring element has another, a skilled person appear appropriate design.
  • the spring element is arranged in the receiving recess of the stop element.
  • the pre-positioning element can advantageously be acted upon by means of the spring element with a spring force in the direction of a counterpositioning element corresponding to the pre-positioning element in order to reliably pre-position the stop element.
  • structurally simple a force can be generated which acts on the fixing element in at least one operating state in the direction of a release position of the fixing.
  • the stop element is mounted pivotably on a control element of the stop unit that is movably mounted on a guide element of the cutting depth guide unit.
  • the term "operating elementā€ is intended to define an element which is provided to receive an input quantity from an operator during an operating procedure and in particular to be contacted directly by an operator, wherein a touch of the operating element senses and / or an actuating force exerted on the operating element sensed and / or mechanically forwarded to actuate a unit and / or an element, in particular the stop element. It can advantageously be achieved a comfortable operation of the stop element.
  • the stop unit comprises at least the operating element for a movement of the stop element, which is displaceably mounted in a guide recess of the guide element of the cutting depth guide unit.
  • at least one display element of the stop unit is arranged on the operating element.
  • the display element is preferably provided to display to an operator by means of a scale arranged on the guide element a set by means of the cutting depth limiting device limitation of a depth of cut.
  • the display element is designed as a digital display, by means of which a set limit of a cutting depth can be displayed.
  • the guide recess is preferably arranged in a plane extending at least substantially perpendicular to a movement axis of the stop element.
  • the guide recess is arranged in another, to a professional appear appropriate level.
  • the cutting depth guide unit comprises at least the guide element which has at least one latching track with which at least the Vorposition michselement cooperates in at least one position.
  • the Vorposition rĆ©elleselement engages in at least one position in the latching track.
  • the guide element has at least one further latching track into which the fixing element engages at least in a blocking position of the fixing element.
  • the guide element has only one detent track into which the Vorposition michselement engages in at least one position and engages in the fixing element at least in a locking position of the fixing.
  • the invention is based on a portable power tool, in particular a circular saw, which comprises a cutting depth limiting device according to the invention.
  • a "portable machine toolā€ is to be understood here in particular as meaning a machine tool for machining workpieces, 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 portable power tool is particularly preferably designed as a dip circular saw.
  • the portable power tool has another, a skilled person appear appropriate design, such as a design as a submerged saw, electric hand saw, etc. It can be advantageously a high ease of use for an operator of the portable power tool can be achieved.
  • FIG. 1 1 shows a portable power tool 12 formed as a circular plunge saw with a cutting depth limiting device 10.
  • the portable power tool 12 further comprises a power tool housing 38, which is provided to surround a drive unit 40 of the portable power tool 12.
  • the drive unit 40 comprises a drive shaft (not shown here in detail) for driving a tool holder (not shown here in greater detail) of the portable power tool 12 which can be coupled to a machining tool 42 (FIG. FIGS. 1 and 3 ) in a manner already known to a person skilled in the art.
  • the portable power tool 12 comprises a base unit or as a sliding block formed support unit 44, with the portable machine tool 12 during a machining of a workpiece (not shown here) rests on a workpiece surface of the workpiece or in a movement to an introduction of a cut in the workpiece slides on the workpiece surface.
  • a protective unit 46 of the portable power tool 12 is also arranged, which protects an operator from injury during machining of the workpiece by means of the machining tool 42.
  • the protective unit 46 is designed as a protective hood, which encloses the machining tool 42 in an assembled state along a rotational direction of the drive shaft by more than 160 Ā°.
  • the protection unit 46 further has a suction coupling element 48, which is connectable to a suction unit (not shown here in detail) to a suction of removed workpiece particles during machining of the workpiece.
  • the machine tool housing 38 is mounted pivotably relative to the support unit 44 on the protection unit 46.
  • the machine tool housing 38 is mounted pivotably about a dip pivot axis 50 of the machine tool housing 38 in a manner already known to a person skilled in the art.
  • the machine tool housing 38 is mounted together with the protection unit 46 in a manner already known to a person skilled in the art about a tilting pivot axis 52 pivotable relative to the support unit 44 on the support unit 44.
  • the dip pivot axis 50 extends at least substantially perpendicular to the tilting pivot axis 52.
  • the cutting depth limiting device 10 for the portable power tool 12 is arranged to set a limitation of a cutting depth on a side facing the machine tool housing 38 side of the protection unit 46 on the protection unit 46. However, it is also conceivable that the cutting depth limiting device 10 is arranged at another, to a skilled person appear appropriate position on the protection unit 46 or other component of the portable power tool 12.
  • the cutting depth limiting device 10 comprises at least one cutting depth guide unit 14 and at least one stop unit 16 which has at least one movably mounted stop element 18 and at least one fixing element 20 for fixing the stop element 18 in at least one position.
  • the stop element 18 is movably mounted for setting a limitation of a cutting depth of the machining tool 42 along a guide element 28 of the cutting depth guide unit 14.
  • the stop unit 16 comprises, for a movement of the stop element 18, at least one operating element 32 which is displaceably mounted in a guide recess 34 of the guide element 28 of the cutting depth guide unit 14.
  • the stop element 18 is mounted pivotably about a movement axis 36 of the stop element 18 on the operating element 32 of the stop unit 16 movably mounted on the guide element 28 of the cutting depth guide unit 14.
  • the guide recess 34 is arranged in a plane extending at least substantially perpendicular to the movement axis 36 of the stop element 18.
  • the guide recess 34 viewed along an overall extension of the guide recess 34, an arcuate course.
  • the guide recess 34 it is also conceivable for the guide recess 34 to be arranged on the guide element 28 at another position which would appear meaningful to a person skilled in the art, for example on a side of the guide element 28 facing away from the machine tool housing 38 etc. In addition, it is also conceivable for the guide recess 34 another, which appears appropriate to a person skilled in the course, such as a straight course, etc.
  • the detent track 24 and the further detent track 26 extend on a machine tool housing 38 side facing.
  • the latching track 24 and the further latching track 26 extend at least substantially parallel.
  • the guide element 28 has only a single detent track 24, which is intended to cooperate with the fixing element 20 and the pre-positioning element 22.
  • the guide member 28 on a scale 54 which corresponds to a display of a set by means of the stop unit 16 limit a depth of cut dimension of a depth of cut with a arranged on the control element 32 pointer element 56 cooperates ( FIG. 5 ).
  • the cutting depth limiting device 10 comprises a digital display unit for displaying a dimension of a cutting depth corresponding to a set limit of a cutting depth.
  • the fixing element 20 is designed as a locking extension.
  • the fixing element 20 is arranged on a side of the stop element 18 facing the guide element 28.
  • the fixing element 20 is formed integrally with the stop element 18.
  • the fixing element 20 has, considered in a at least substantially perpendicular to the axis of movement 36 of the stop element 18 extending plane, a polygonal shape. In the plane extending at least substantially perpendicular to the movement axis 36 of the stop element 18, the stop element 18 has a sawtooth shape.
  • the fixing element 20 is formed corresponding to the detent path 24 designed as a sawtooth detent track.
  • the stop unit 16 has at least four fixing elements 20, which are designed as locking projections.
  • the four fixing elements 20 have an analogous configuration to each other and are formed integrally with the stop element 18.
  • the stop unit 16 further comprises at least the Vorposition rĆ©elleselement 22, which acts on the fixing element 20 in at least one state in the direction of a release position of the fixing element 20 with a force.
  • the Vorposition rĆ©elleselement 22 moves in at least one state, the fixing element 20 of at least the latching track 24 of the guide member 28 of the cutting depth guide unit 14 away.
  • the Vorposition rĆ©elleselement 22 moves the fixing member 20 at least in an unloaded from the machine tool housing 38 of the portable power tool 12 state of the stop member 18 away from the detent track 24 of the guide member 28.
  • the fixing member 20 is transferred to a release position of the fixing element 20.
  • the stop element 18 is movable to adjust a depth of cut relative to the guide element 28 by a movement of the operating element 32 in the guide recess 34 along the guide recess 34.
  • the Vorposition istselement 22 is intended to secure the stop member 18 against movement along the latching track 24 and along the guide recess 34 due to a force acting on the stopper member 18 weight.
  • the pre-positioning element 22 is designed as a spring-loaded detent pin ( Figures 2 and 4 ).
  • the stop element 18 has, for receiving the pre-positioning element 22, at least one receiving recess 30, in which the pre-positioning element 22 is arranged at least partially.
  • the stop unit 16 comprises a load on the Vorposition rĆ©elleselements 22 with a force in the direction of the guide member 28 or in the direction of the further latching track 26 at least one spring element 58 (FIG.
  • the spring element 58 is designed as a helical compression spring. However, it is also conceivable that the spring element 58 has another, a skilled person appear appropriate design.
  • the spring element 58 is arranged in the receiving recess 30 of the stop element 18.
  • the spring element 58 is arranged in a recess 60 of the Vorposition michselements 22.
  • the spring element 58 is supported with one end on the stop element 18 and with a further end, the spring element 58 is supported on the Vorposition rĆ©elleselement 22 from.
  • the stop element 18 is acted upon by a spring force of the spring element 58 and by the interaction of the Vorposition istselements 22 with the further latching track 26 with a force in a direction away from the guide member 28 direction.
  • the fixing element 20 is also subjected to a force in at least one state in the direction of a release position of the fixing element 20.
  • the pre-positioning element 22 has a hemispherical latching head 62.
  • the latching head 62 interacts here with the further latching track 26.
  • the latching head 62 is acted upon by means of a spring force of the spring element 58 in the direction of the guide element 28 and the further latching track 26.
  • the latching head 62 can slide as a result of overriding along the further latching track 26.
  • the latching head 62 and the pre-positioning element 22 are pressed against a spring force of the spring element 58 in the direction of the stop element 18 in the receiving recess 30 of the stop element 18.
  • the pre-positioning element 22 and the latching head 62 are brought into engagement with at least two latching areas or at least two latching teeth of the further latching track 26 by a spring force of the spring element 58. This ensures that the stop element 18 is not adjusted by a force acting on the stop element 18 weight force from the set after setting a depth of cut Position moves.
  • the stop element 18 is prepositioned by means of the pre-positioning element 22.
  • the machine tool housing 38 When machining a workpiece (not shown in detail here), the machine tool housing 38 is pivoted about the dip pivot axis 50 relative to the support unit 44 in the direction of the support unit 44 after setting a depth of cut by means of a positioning of the stop element 18 ( FIG. 3 ). As a result, cutting teeth of the machining tool 42 come to a machining of the workpiece in contact or in engagement with the workpiece.
  • the machine tool housing 38 is pivoted as long as the dip pivot axis 50 until a stop portion 64 of the machine tool housing 38 abuts the stop element 18. As a result, a moment is generated which pivots the stop element 18 about the movement axis 36 of the stop element 18 relative to the operating element 32.
  • the fixing element 20 engages with the latching track 24 or with latching teeth of the latching track 24.
  • the fixing element 20 is thus in a locking position, in which a movement of the stop element 18 along the guide recess 34 by a Cooperation of the fixing element 20 and the latching track 24 is prevented.
  • the Vorpositionleiterselement 22 always engages in a locking position of the fixing element 20 in the further latching track 26 a.
  • the pre-positioning element 22 or a spring force of the spring element 58 acting on the pre-positioning element 22 moves the fixing element 20 away from the latching track 26 Direction in a release position of the fixing 20.
  • the stop member 18 is pivoted by the Vorposition rĆ©elleselement 22 and acting on the Vorposition rĆ©elleselement 22 spring force of the spring element 58 in a direction away from the guide member 28 direction about the movement axis 36 of the stop member 18 relative to the control element 32.
  • the pre-positioning element 22 in this case remains in contact with the further latching track 26 and pre-positions the stop element 18 in a position relative to the guide element 28.
  • the stop unit 16 has at least one guide rail compensation element 66 (FIG. FIG. 2 ).
  • the guide rail compensation element 66 is intended to provide a distance difference of a support surface 68 (FIG. FIG. 1 ) relative to a workpiece surface when using the portable power tool 12 with a guide rail device (not shown in detail here) compared to a use of the portable power tool 12 decoupled from the guide rail device compensate.
  • the guide rail compensation element 66 is in this case mounted rotatably about an at least substantially parallel to the movement axis 36 of the stop element 18 extending movement axis 70 of the guide rail compensation element 66 on the stop element 18.
  • a new abutment surface for the abutment portion 64 of the machine tool housing 38 is provided as a result of rotation of the guide rail compensation element 66 about the movement axis 70 of the guide rail compensation element 66 relative to the stop element 18, which allows compensation of the distance difference.
  • the stop unit 16 has at least one rotary lever operating element 72 (FIG. FIG. 2 ). The rotary lever operating element 72 is fixed to the guide rail compensation element 66.

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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)

Description

Stand der TechnikState of the art

Es sind bereits Schnitttiefenbegrenzungsvorrichtungen wie es in dem Oberbegriff des Anspruchs 1 beansprucht wird, fĆ¼r tragbare Werkzeugmaschinen bekannt, die eine SchnitttiefenfĆ¼hrungseinheit und eine Anschlageinheit aufweisen, wobei die Anschlageinheit ein beweglich gelagertes Anschlagelement und zumindest ein Fixierelement zu einer Fixierung des Anschlagelements in zumindest einer Position aufweist, wobei die Anschlageinheit ein Vorpositionierungselement umfasst, das das Fixierelement in zumindest einem Zustand in Richtung einer Freigabeposition des Fixierelements mit einer Kraft beaufschlagt. Eine solche Schnitttiefenbegrenzungsvorrichtung ist in EP 1 777 047 A1 schon beschrieben.Cutting depth limiting devices as claimed in the preamble of claim 1 are already known for portable power tools having a cutting depth guide unit and a stop unit, the stop unit having a movably mounted stop element and at least one fixing element for fixing the stop element in at least one position, wherein the stop unit comprises a Vorpositionierungselement which acts on the fixing element in at least one state in the direction of a release position of the fixing with a force. Such a cutting depth limiting device is in EP 1 777 047 A1 already described.

Offenbarung der ErfindungDisclosure of the invention

Die Erfindung geht aus von einer Schnitttiefenbegrenzungsvorrichtung fĆ¼r tragbare Werkzeugmaschinen, mit zumindest einer SchnitttiefenfĆ¼hrungseinheit und mit zumindest einer Anschlageinheit, die zumindest ein beweglich gelagertes Anschlagelement und zumindest ein Fixierelement zu einer Fixierung des Anschlagelements in zumindest einer Position aufweist.The invention is based on a cutting depth limiting device for portable machine tools, with at least one cutting depth guide unit and with at least one stop unit having at least one movably mounted stop element and at least one fixing element for fixing the stop element in at least one position.

Vorzugsweise beaufschlagt das Vorpositionierungselement das Fixierelement zumindest in einem von einem WerkzeugmaschinengehƤuse der tragbaren Werkzeugmaschine unbelasteten Zustand des Anschlagelements. Hierbei beaufschlagt das Vorpositionierungselement das Fixierelement in eine von einem FĆ¼hrungselement der SchnitttiefenfĆ¼hrungseinheit abgewandte Richtung. Vorzugsweise beaufschlagt das Vorpositionierungselement das Fixierelement mit einer Kraft in Richtung des WerkzeugmaschinengehƤuses. Der Ausdruck "Schnitttiefenbegrenzungsvorrichtung" soll hier insbesondere eine Vorrichtung definieren, die dazu vorgesehen ist, eine Eintauchstrecke eines mit einer Werkzeugaufnahme einer tragbaren Werkzeugmaschine verbundenen Bearbeitungswerkzeugs, insbesondere eines KreissƤgeblatts, in ein zu bearbeitendes WerkstĆ¼ck zu begrenzen und/oder eine LƤnge der Eintauchstrecke einzustellen, insbesondere mittels der Anschlageinheit. Unter "vorgesehen" soll insbesondere speziell ausgelegt und/oder speziell ausgestattet verstanden werden. Die Eintauchstrecke des Bearbeitungswerkzeugs in ein zu bearbeitendes WerkstĆ¼ck wird hierbei insbesondere entlang einer zumindest im Wesentlichen senkrecht zu einer AuflageflƤche einer Auflageeinheit der tragbaren Werkzeugmaschine, mit der die tragbare Werkzeugmaschine auf einer WerkstĆ¼ckoberflƤche eines zu bearbeitenden WerkstĆ¼cks aufliegt, verlaufenden Richtung betrachtet. Der Ausdruck "im Wesentlichen senkrecht" soll hier insbesondere eine Ausrichtung einer Richtung relativ zu einer Bezugsrichtung definieren, wobei die Richtung und die Bezugsrichtung, insbesondere in einer Ebene betrachtet, einen Winkel von 90Ā° einschlieƟen und der Winkel eine maximale Abweichung von insbesondere kleiner als 8Ā°, vorteilhaft kleiner als 5Ā° und besonders vorteilhaft kleiner als 2Ā° aufweist.The pre-positioning element preferably acts upon the fixing element at least in a state of the stop element that is unloaded from a machine tool housing of the portable machine tool. In this case, the pre-positioning element acts on the fixing element in a direction away from a guide element of the cutting depth guide unit. The pre-positioning element preferably also acts on the fixing element a force in the direction of the machine tool housing. The term "depth of cut limiting device" is intended here to define, in particular, a device which is intended to delimit an immersion path of a machining tool, in particular a circular saw blade, connected to a tool holder of a portable machine tool into a workpiece to be machined and / or to set a length of the immersion section, in particular by means of the stop unit. By "intended" is intended to be understood in particular specifically designed and / or specially equipped. In this case, the immersion path of the machining tool into a workpiece to be machined is considered, in particular, along a direction running at least substantially perpendicular to a contact surface of a supporting unit of the portable machine tool with which the portable machine tool rests on a workpiece surface of a workpiece to be machined. The term "substantially perpendicular" is intended here to define, in particular, an orientation of a direction relative to a reference direction, the direction and the reference direction, in particular in one plane, including an angle of 90 Ā° and the angle a maximum deviation of, in particular, less than 8 Ā°, advantageously less than 5 Ā° and particularly advantageously less than 2 Ā°.

Der Ausdruck "SchnitttiefenfĆ¼hrungseinheit" soll hier insbesondere eine Einheit definieren, die dazu vorgesehen ist, ein Bauteil bei einer Bewegung entlang einer vorgegebenen Bahn mittels einer Einwirkung von zumindest einer Zwangskraft quer zu einer Bewegungsrichtung zu fĆ¼hren. Unter einer "Zwangskraft" soll hier insbesondere eine Kraft verstanden werden, die dazu vorgesehen ist, ein Bauteil an einer Bewegung in zumindest eine Richtung zu hindern und/oder das Bauteil bei einer Bewegung auf einer mittels einer Einwirkung der Kraft auf das Bauteil vorgegebenen Bahn zu halten. Bevorzugt wird mittels eines Zusammenwirkens der SchnitttiefenfĆ¼hrungseinheit und der Anschlageinheit eine Bewegungsstrecke der Werkzeugaufnahme und/oder des WerkzeugmaschinengehƤuses in Richtung der Auflageeinheit relativ zur Auflageeinheit begrenzt und/oder eine LƤnge der Bewegungsstrecke der Werkzeugaufnahme und/oder des WerkzeugmaschinengehƤuses in Richtung der Auflageeinheit relativ zur Auflageeinheit eingestellt. Bevorzugt kann mittels eines Einstellens einer Position des Anschlagelements relativ zum FĆ¼hrungselement eine LƤnge der Bewegungsstrecke der Werkzeugaufnahme und/oder des WerkzeugmaschinengehƤuses in Richtung der Auflageeinheit relativ zur Auflageeinheit eingestellt werden. Bevorzugt kann mittels einer Einstellung einer LƤnge der Bewegungsstrecke der Werkzeugaufnahme, insbesondere mit einem daran befestigten Bearbeitungswerkzeug, und/oder des WerkzeugmaschinengehƤuses relativ zur Auflageeinheit eine Schnitttiefe eines bei einer Bearbeitung eines WerkstĆ¼cks in eine WerkstĆ¼ckoberflƤche eindringenden Bearbeitungswerkzeugs eingestellt werden. Unter einer "Auflageeinheit" soll hier insbesondere eine Einheit verstanden werden, die wƤhrend einer Bearbeitung eines WerkstĆ¼cks mittels der tragbaren Werkzeugmaschine bei einer ordnungsgemƤƟen Handhabung der tragbaren Werkzeugmaschine auf dem WerkstĆ¼ck aufliegt, insbesondere mit einer AuflageflƤche der Auflageeinheit. Vorzugsweise ist die Auflageeinheit dazu vorgesehen, die tragbare Werkzeugmaschine wƤhrend einer Bearbeitung des WerkstĆ¼cks auf dem WerkstĆ¼ck abzustĆ¼tzen. Besonders bevorzugt ist die Auflageeinheit als Gleitschuh und/oder als Grundplatte ausgebildet.The term "cutting depth guide unit" is intended here to define, in particular, a unit which is provided to guide a component transversely to a movement direction along a predetermined path by means of an action of at least one constraining force. A "constraining force" is to be understood here in particular as meaning a force which is intended to prevent a component from moving in at least one direction and / or the component to move on a path predetermined by means of an action of the force on the component hold. Preferably, a movement distance of the tool holder and / or the machine tool housing in the direction of the support unit is limited relative to the support unit and / or set a length of the movement path of the tool holder and / or the machine tool housing in the direction of the support unit relative to the support unit by means of an interaction of the cutting depth guide unit and the stop unit. Preferably, by means of adjusting a position of the stop element relative to the guide element, a length of the movement path of the tool holder and / or the machine tool housing are adjusted in the direction of the support unit relative to the support unit. Preferably, by adjusting a length of the movement path of the tool holder, in particular with a machining tool attached thereto, and / or the machine tool housing relative to the support unit, a depth of cut of a machining tool penetrating into a workpiece surface when a workpiece is machined. A "support unit" is to be understood here in particular as a unit which rests on the workpiece during machining of a workpiece by means of the portable machine tool during proper handling of the portable machine tool, in particular with a support surface of the support unit. Preferably, the support unit is intended to support the portable power tool during a machining of the workpiece on the workpiece. Particularly preferably, the support unit is designed as a sliding block and / or as a base plate.

Unter dem Ausdruck "beweglich gelagert" soll hier insbesondere eine Lagerung des Anschlagelements an dem FĆ¼hrungselement verstanden werden, wobei das Anschlagelement, insbesondere entkoppelt von einer elastischen Verformung des Anschlagelements, eine Bewegungsmƶglichkeit relativ zur SchnitttiefenfĆ¼hrungseinheit entlang zumindest einer Achse entlang einer Strecke grĆ¶ĆŸer als 1 mm, bevorzugt grĆ¶ĆŸer als 10 mm und besonders bevorzugt grĆ¶ĆŸer als 20 mm aufweist. Es ist jedoch auch denkbar, dass das Anschlagelement alternativ oder zusƤtzlich eine andere, einem Fachmann als sinnvoll erscheinende Bewegungsmƶglichkeit, insbesondere relativ zum FĆ¼hrungselement, aufweist, wie beispielsweise eine Bewegungsmƶglichkeit um zumindest eine Achse um einen Winkel grĆ¶ĆŸer als 10Ā°, bevorzugt grĆ¶ĆŸer als 20Ā° und besonders bevorzugt grĆ¶ĆŸer als 30Ā°. Bevorzugt verlƤuft die Bewegungsachse des Anschlagelements zumindest im Wesentlichen parallel oder zumindest im Wesentlichen quer zu einer SchnitttiefenfĆ¼hrungsbahn des FĆ¼hrungselements. Vorzugsweise ist das Anschlagelement relativ zum FĆ¼hrungselement beweglich gelagert. Unter "im Wesentlichen parallel" soll hier insbesondere eine Ausrichtung einer Richtung relativ zu einer Bezugsrichtung, insbesondere in einer Ebene, verstanden werden, wobei die Richtung gegenĆ¼ber der Bezugsrichtung eine Abweichung insbesondere kleiner als 8Ā°, vorteilhaft kleiner als 5Ā° und besonders vorteilhaft kleiner als 2Ā° aufweist und insbesondere identisch mit der Bezugsrichtung ist. Der Ausdruck "zumindest im Wesentlichen quer" soll hier insbesondere eine Ausrichtung einer Richtung relativ zu einer Bezugsrichtung definieren, wobei die Richtung und die Bezugsrichtung, insbesondere in einer Ebene betrachtet, voneinander verschiedene VerlƤufe aufweisen und insbesondere auch von rein entgegengesetzten VerlƤufen der Richtung und der Bezugsrichtung verschieden sind.The term "movably mounted" is to be understood here in particular as a mounting of the stop element on the guide element, wherein the stop element, in particular decoupled from an elastic deformation of the stop element, a movement possibility relative to the SchnitttiefenfĆ¼hrungseinheit along at least one axis along a distance greater than 1 mm, preferably greater than 10 mm and more preferably greater than 20 mm. However, it is also conceivable that the stop element alternatively or additionally another, a person skilled in the sense of appearing movement possibility, in particular relative to the guide element has, such as a possibility of movement about at least one axis by an angle greater than 10 Ā°, preferably greater than 20 Ā° and more preferably greater than 30 Ā°. Preferably, the movement axis of the stop element extends at least substantially parallel or at least substantially transversely to a cutting depth guide track of the guide element. Preferably, the stop element is mounted movably relative to the guide element. "Substantially parallel" is to be understood here as meaning, in particular, an alignment of a direction relative to a reference direction, in particular in a plane, wherein the direction relative to the reference direction is a deviation, in particular less than 8 Ā°, advantageously less than 5 Ā° and particularly advantageously less than 2 Ā° and in particular identical to the reference direction. The term "at least substantially transversely" is intended here to define, in particular, an orientation of a direction relative to a reference direction, the direction and the reference direction, viewed in particular in one plane, having mutually different courses and in particular also of purely opposite courses of the direction and the reference direction are different.

Das Fixierelement ist vorzugsweise als Formschlussfixierelement ausgebildet. Besonders bevorzugt ist das Fixierelement als Feststellrastfortsatz ausgebildet. Es ist jedoch auch denkbar, dass das Fixierelement eine andere, einem Fachmann als sinnvoll erscheinende Ausgestaltung aufweist, wie beispielsweise eine Ausgestaltung als Rastausnehmung, die mit einem korrespondierenden Rastfortsatz zusammenwirkt. Bevorzugt ist das Fixierelement einstĆ¼ckig mit dem Anschlagelement ausgebildet. Unter "einstĆ¼ckig" soll insbesondere zumindest stoffschlĆ¼ssig verbunden verstanden werden, beispielsweise durch einen SchweiƟprozess, einen Klebeprozess, einen Anspritzprozess und/oder einen anderen, dem Fachmann als sinnvoll erscheinenden Prozess, und/oder vorteilhaft in einem StĆ¼ck geformt verstanden werden, wie beispielsweise durch eine Herstellung aus einem Guss und/oder durch eine Herstellung in einem Ein- oder Mehrkomponentenspritzverfahren und vorteilhaft aus einem einzelnen Rohling. Das als Feststellrastfortsatz ausgebildete Fixierelement wirkt in zumindest einer Position zu einer Fixierung des Anschlagelements in zumindest einer Position relativ zum FĆ¼hrungselement mit zumindest einer Rastbahn des FĆ¼hrungselements zusammen. Bevorzugt fixiert das Fixierelement, insbesondere in einer Sperrposition des Fixierelements, das Anschlagelement zumindest in einer Position relativ zum FĆ¼hrungselement. Der Ausdruck "Freigabeposition" soll hier insbesondere eine Position des Fixierelements definieren, in der das Fixierelement auƟer Eingriff eines mit dem Fixierelement korrespondierenden Gegenfixierelements ist und/oder in der das Fixierelement kontaktlos zu einem mit dem Fixierelement korrespondierenden Gegenfixierelement ist. Vorzugsweise ist das Anschlagelement in der Freigabeposition des Fixierelements zu einer Einstellung einer Schnitttiefe relativ zum FĆ¼hrungselement beweglich. Mittels der erfindungsgemƤƟen Ausgestaltung der Schnitttiefenbegrenzungsvorrichtung kann vorteilhaft eine komfortable Einstellbarkeit einer gewĆ¼nschten Schnitttiefe mittels einer Bewegung des Anschlagelements erreicht werden. Zudem kann vorteilhaft eine selbsttƤtige Einrastfunktion des Fixierelements zu einer Fixierung des Anschlagelements in zumindest einer Position relativ zum FĆ¼hrungselement infolge einer Bewegung des WerkzeugmaschinengehƤuses in Richtung des Anschlagelements realisiert werden. GemƤƟ Anspruch 1 wird das Fixierelement durch eine Bewegung des WerkzeugmaschinengehƤuses in Richtung des Fixierelements bzw. durch eine Krafteinwirkung des WerkzeugmaschinengehƤuses auf das Fixierelement in eine Sperrposition des Fixierelements bewegt, in der das Fixierelement das Anschlagelement in zumindest einer Position relativ zum FĆ¼hrungselement fixiert. Des Weiteren wird vorgeschlagen, dass das Vorpositionierungselement in zumindest einem Zustand das Fixierelement von zumindest einer Rastbahn des FĆ¼hrungselements der SchnitttiefenfĆ¼hrungseinheit weg bewegt. Bevorzugt bewegt das Vorpositionierungselement das Fixierelement zumindest in einem vom WerkzeugmaschinengehƤuse der tragbaren Werkzeugmaschine unbelasteten Zustand des Anschlagelements weg von der Rastbahn des FĆ¼hrungselements. Vorzugsweise bewegt das Vorpositionierungselement das Fixierelement infolge einer Aufhebung einer Krafteinwirkung des WerkzeugmaschinengehƤuses auf das Fixierelement von einer Rastbahn des FĆ¼hrungselements weg. Hierdurch kann vorteilhaft eine selbsttƤtige ƜberfĆ¼hrung des Fixierelements ausgehend von einer Sperrposition des Fixierelements in eine Freigabeposition des Fixierelements erreicht werden. Somit kann vorteilhaft eine komfortable Einstellung einer gewĆ¼nschten Schnitttiefe erreicht werden, die entkoppelt ist von einer separaten Bedienung des Fixierelements zu einer Erreichung einer Beweglichkeit des Anschlagelements relativ zum FĆ¼hrungselement.The fixing element is preferably designed as a positive locking element. Particularly preferably, the fixing element is designed as a locking latch extension. However, it is also conceivable that the fixing element has another, to a professional appear appropriate design, such as a configuration as a recess, which cooperates with a corresponding latching extension. Preferably, the fixing element is formed integrally with the stop element. By "one piece" should be understood in particular at least materially connected connected, for example, by a welding process, a gluing process, a Anspritzprozess and / or another, the skilled person appear useful process, and / or advantageously formed in one piece, such as by a Manufacture from a casting and / or by a production in a one- or multi-component injection molding process and advantageously from a single blank. The fixing element designed as a locking catch extension acts in at least one position to fix the stop element together in at least one position relative to the guide element with at least one latching track of the guide element. Preferably, the fixing element, in particular in a blocking position of the fixing element, fixes the stop element at least in a position relative to the guide element. The term "release position" is intended here to define, in particular, a position of the fixing element in which the fixing element is out of engagement with a counterfixing element which corresponds to the fixing element and / or in which the fixing element is in contact with a counterfixing element corresponding to the fixing element. In the release position of the fixing element, the stop element is preferably movable relative to the guide element for setting a depth of cut. By means of the design according to the invention of the depth-of-cut limiting device, advantageously a comfortable adjustability of a desired cutting depth can be achieved by means of a movement of the stop element. In addition, can advantageously be an automatic Snap-in function of the fixing to a fixation of the stop element in at least one position relative to the guide element as a result of movement of the machine tool housing in the direction of the stop element can be realized. According to claim 1, the fixing element is moved by a movement of the machine tool housing in the direction of the fixing or by a force of the machine tool housing on the fixing in a locking position of the fixing, in which the fixing element fixes the stop element in at least one position relative to the guide element. Furthermore, it is proposed that, in at least one state, the pre-positioning element moves the fixing element away from at least one latching track of the guide element of the cutting depth guide unit. Preferably, the Vorpositionierungselement moves the fixing at least in an unloaded from the machine tool housing of the portable power tool state of the stop element away from the detent track of the guide element. Preferably, the Vorpositionierungselement moves the fixing due to a repeal of a force of the machine tool housing on the fixing of a locking track of the guide element away. As a result, an automatic transfer of the fixing element can advantageously be achieved starting from a blocking position of the fixing element into a release position of the fixing element. Thus, advantageously, a comfortable setting of a desired cutting depth can be achieved, which is decoupled from a separate operation of the fixing element to achieve a mobility of the stop element relative to the guide element.

Ferner wird vorgeschlagen, dass das Vorpositionierungselement relativ zum Anschlagelement beweglich gelagert ist. Es kann vorteilhaft ein Zusammenwirken des Vorpositionierungselements mit einem mit dem Vorpositionierungselement korrespondierenden Gegenpositionierungselement wƤhrend einer Bewegung des Anschlagelements sichergestellt werden. Somit kann vorteilhaft eine zuverlƤssige Vorpositionierung des Anschlagelements erreicht werden.It is also proposed that the Vorpositionierungselement is mounted movably relative to the stop element. It can be ensured during a movement of the stop element advantageously a cooperation of the Vorpositionierungselements with a corresponding with the Vorpositionierungselement Gegenpositionierungselement. Thus, advantageously a reliable pre-positioning of the stop element can be achieved.

In einer bevorzugten Ausgestaltung der Schnitttiefenbegrenzungsvorrichtung umfasst das Anschlagelement zumindest eine Aufnahmeausnehmung, in der das Vorpositionierungselement zumindest teilweise angeordnet ist. Es kann vorteilhaft eine kompakte Anordnung des Vorpositionierungselements erreicht werden. Somit kann vorteilhaft Bauraum eingespart werden und es kann eine kompakte Schnitttiefenbegrenzungsvorrichtung erreicht werden.In a preferred embodiment of the cutting depth limiting device, the stop element comprises at least one receiving recess, in which the Vorpositionierungselement is at least partially disposed. It can be beneficial a compact arrangement of Vorpositionierungselements be achieved. Thus, advantageous space can be saved and it can be achieved a compact cutting depth limiting device.

Zudem wird vorgeschlagen, dass das Vorpositionierungselement als federbelasteter Rastbolzen ausgebildet ist. Hierzu umfasst die Anschlageinheit zumindest ein Federelement, das das Vorpositionierungselement mit einer Federkraft beaufschlagt, insbesondere mit einer Federkraft in eine vom Anschlagelement abgewandte Richtung. Unter einem "Federelement" soll insbesondere ein makroskopisches Element verstanden werden, das zumindest eine Erstreckung aufweist, die in einem normalen Betriebszustand um zumindest 10 %, insbesondere um wenigstens 20 %, vorzugsweise um mindestens 30 % und besonders vorteilhaft um zumindest 50 % elastisch verƤnderbar ist, und das insbesondere eine von einer VerƤnderung der Erstreckung abhƤngige und vorzugsweise zu der VerƤnderung proportionale Gegenkraft erzeugt, die der VerƤnderung entgegenwirkt. Unter einer "Erstreckung" eines Elements soll insbesondere ein maximaler Abstand zweier Punkte einer senkrechten Projektion des Elements auf eine Ebene verstanden werden. Unter einem "makroskopischen Element" soll insbesondere ein Element mit einer Erstreckung von zumindest 1 mm, insbesondere von wenigstens 5 mm und vorzugsweise von mindestens 10 mm verstanden werden. Bevorzugt ist das Federelement als Druckfeder ausgebildet. Es ist jedoch auch denkbar, dass das Federelement eine andere, einem Fachmann als sinnvoll erscheinende Ausgestaltung aufweist. Bevorzugt ist das Federelement in der Aufnahmeausnehmung des Anschlagelements angeordnet. Mittels der erfindungsgemƤƟen Ausgestaltung kann vorteilhaft eine konstruktiv einfache Vorpositionierung des Anschlagelements in zumindest einer Position relativ zum FĆ¼hrungselement erreicht werden. Zudem kann das Vorpositionierungselement zu einer sicheren Vorpositionierung des Anschlagelements vorteilhaft mittels des Federelements mit einer Federkraft in Richtung eines mit dem Vorpositionierungselement korrespondierenden Gegenpositionierungselements beaufschlagt werden. Ferner kann konstruktiv einfach eine Kraft erzeugt werden, die das Fixierelement in zumindest einem Betriebszustand in Richtung einer Freigabeposition des Fixierelements beaufschlagt.In addition, it is proposed that the Vorpositionierungselement is designed as a spring-loaded locking pin. For this purpose, the stop unit comprises at least one spring element, which acts on the Vorpositionierungselement with a spring force, in particular with a spring force in a direction away from the stop element direction. A "spring element" is to be understood in particular as a macroscopic element which has at least one extension that is elastically changeable by at least 10%, in particular by at least 20%, preferably by at least 30% and particularly advantageously by at least 50% in a normal operating state , And in particular generates a dependent on a change in the extension and preferably proportional to the change counterforce, which counteracts the change. An "extension" of an element should, in particular, be understood to mean a maximum distance between two points of a vertical projection of the element onto a plane. By a "macroscopic element" is meant in particular an element with an extension of at least 1 mm, in particular of at least 5 mm and preferably of at least 10 mm. Preferably, the spring element is designed as a compression spring. However, it is also conceivable that the spring element has another, a skilled person appear appropriate design. Preferably, the spring element is arranged in the receiving recess of the stop element. By means of the configuration according to the invention, it is advantageously possible to achieve a structurally simple pre-positioning of the stop element in at least one position relative to the guide element. In addition, the pre-positioning element can advantageously be acted upon by means of the spring element with a spring force in the direction of a counterpositioning element corresponding to the pre-positioning element in order to reliably pre-position the stop element. Furthermore, structurally simple a force can be generated which acts on the fixing element in at least one operating state in the direction of a release position of the fixing.

Des Weiteren wird vorgeschlagen, dass das Anschlagelement schwenkbar an einem beweglich an einem FĆ¼hrungselement der SchnitttiefenfĆ¼hrungseinheit gelagerten Bedienelement der Anschlageinheit gelagert ist. Der Begriff "Bedienelement" soll insbesondere ein Element definieren, das dazu vorgesehen ist, bei einem Bedienvorgang eine EingabegrĆ¶ĆŸe von einem Bediener aufzunehmen und insbesondere unmittelbar von einem Bediener kontaktiert zu werden, wobei ein BerĆ¼hren des Bedienelements sensiert und/oder eine auf das Bedienelement ausgeĆ¼bte BetƤtigungskraft sensiert und/oder mechanisch zur BetƤtigung einer Einheit und/oder eines Elements, insbesondere des Anschlagelements, weitergeleitet wird. Es kann vorteilhaft eine komfortable Bedienbarkeit des Anschlagelements erreicht werden.Furthermore, it is proposed that the stop element is mounted pivotably on a control element of the stop unit that is movably mounted on a guide element of the cutting depth guide unit. In particular, the term "operating element" is intended to define an element which is provided to receive an input quantity from an operator during an operating procedure and in particular to be contacted directly by an operator, wherein a touch of the operating element senses and / or an actuating force exerted on the operating element sensed and / or mechanically forwarded to actuate a unit and / or an element, in particular the stop element. It can advantageously be achieved a comfortable operation of the stop element.

Ferner wird vorgeschlagen, dass die Anschlageinheit zu einer Bewegung des Anschlagelements zumindest das Bedienelement umfasst, das verschiebbar in einer FĆ¼hrungsausnehmung des FĆ¼hrungselements der SchnitttiefenfĆ¼hrungseinheit gelagert ist. Besonders bevorzugt ist am Bedienelement zumindest ein Anzeigeelement der Anschlageinheit angeordnet. Das Anzeigeelement ist vorzugsweise dazu vorgesehen, mittels einer am FĆ¼hrungselement angeordneten Skala einem Bediener eine mittels der Schnitttiefenbegrenzungsvorrichtung eingestellte Begrenzung einer Schnitttiefe anzuzeigen. Es ist jedoch auch denkbar, dass das Anzeigeelement als Digitalanzeige ausgebildet ist, mittels deren eine eingestellte Begrenzung einer Schnitttiefe darstellbar ist. Mittels der erfindungsgemƤƟen Ausgestaltung der Schnitttiefenbegrenzungsvorrichtung kann vorteilhaft eine prƤzise Einstellung einer gewĆ¼nschten Schnitttiefe erreicht werden.It is also proposed that the stop unit comprises at least the operating element for a movement of the stop element, which is displaceably mounted in a guide recess of the guide element of the cutting depth guide unit. Particularly preferably, at least one display element of the stop unit is arranged on the operating element. The display element is preferably provided to display to an operator by means of a scale arranged on the guide element a set by means of the cutting depth limiting device limitation of a depth of cut. However, it is also conceivable that the display element is designed as a digital display, by means of which a set limit of a cutting depth can be displayed. By means of the embodiment according to the invention of the depth-of-cut limiting device, advantageously a precise setting of a desired cutting depth can be achieved.

Vorzugsweise ist die FĆ¼hrungsausnehmung in einer zumindest im Wesentlichen senkrecht zu einer Bewegungsachse des Anschlagelements verlaufenden Ebene angeordnet. Es ist jedoch auch denkbar, dass die FĆ¼hrungsausnehmung in einer anderen, einem Fachmann als sinnvoll erscheinenden Ebene angeordnet ist. Mittels der erfindungsgemƤƟen Ausgestaltung der Schnitttiefenbegrenzungsvorrichtung kann vorteilhaft eine komfortable Bedienbarkeit des Bedienelements erreicht werden.The guide recess is preferably arranged in a plane extending at least substantially perpendicular to a movement axis of the stop element. However, it is also conceivable that the guide recess is arranged in another, to a professional appear appropriate level. By means of the design according to the invention of the depth-of-cut limiting device, advantageously a comfortable operability of the operating element can be achieved.

Zudem wird vorgeschlagen, dass die SchnitttiefenfĆ¼hrungseinheit zumindest das FĆ¼hrungselement umfasst, das zumindest eine Rastbahn aufweist, mit der zumindest das Vorpositionierungselement in zumindest einer Position zusammenwirkt. Vorzugsweise greift das Vorpositionierungselement in zumindest einer Position in die Rastbahn ein. Besonders bevorzugt weist das FĆ¼hrungselement zumindest eine weitere Rastbahn auf, in die das Fixierelement zumindest in einer Sperrposition des Fixierelements eingreift. Es ist jedoch auch denkbar, dass das FĆ¼hrungselement lediglich eine Rastbahn aufweist, in die das Vorpositionierungselement in zumindest einer Position eingreift und in die das Fixierelement zumindest in einer Sperrposition des Fixierelements eingreift. Mittels der erfindungsgemƤƟen Ausgestaltung kann vorteilhaft eine sichere Vorpositionierung und/oder Fixierung des Anschlagelements relativ zum FĆ¼hrungselement erreicht werden.In addition, it is proposed that the cutting depth guide unit comprises at least the guide element which has at least one latching track with which at least the Vorpositionierungselement cooperates in at least one position. Preferably, the Vorpositionierungselement engages in at least one position in the latching track. Particularly preferably, the guide element has at least one further latching track into which the fixing element engages at least in a blocking position of the fixing element. However, it is also conceivable that the guide element has only one detent track into which the Vorpositionierungselement engages in at least one position and engages in the fixing element at least in a locking position of the fixing. By means of the configuration according to the invention, it is advantageously possible to achieve reliable pre-positioning and / or fixing of the stop element relative to the guide element.

Ferner geht die Erfindung aus von einer tragbaren Werkzeugmaschine, insbesondere von einer KreissƤge, die eine erfindungsgemƤƟe Schnitttiefenbegrenzungsvorrichtung umfasst. Unter einer "tragbaren Werkzeugmaschine" soll hier insbesondere eine Werkzeugmaschine zu einer Bearbeitung von WerkstĆ¼cken verstanden werden, die von einem Bediener transportmaschinenlos transportiert werden kann. Die tragbare Werkzeugmaschine weist insbesondere eine Masse auf, die kleiner ist als 40 kg, bevorzugt kleiner als 10 kg und besonders bevorzugt kleiner als 5 kg. Die tragbare Werkzeugmaschine ist besonders bevorzugt als TauchkreissƤge ausgebildet. Es ist jedoch auch denkbar, dass die tragbare Werkzeugmaschine eine andere, einem Fachmann als sinnvoll erscheinende Ausgestaltung aufweist, wie beispielsweise eine Ausgestaltung als TauchsƤge, als elektrische HandsƤge usw. Es kann vorteilhaft ein hoher Bedienkomfort fĆ¼r einen Bediener der tragbaren Werkzeugmaschine erreicht werden.Furthermore, the invention is based on a portable power tool, in particular a circular saw, which comprises a cutting depth limiting device according to the invention. A "portable machine tool" is to be understood here in particular as meaning a machine tool for machining workpieces, which can be transported without transport machine by an operator. In particular, 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 portable power tool is particularly preferably designed as a dip circular saw. However, it is also conceivable that the portable power tool has another, a skilled person appear appropriate design, such as a design as a submerged saw, electric hand saw, etc. It can be advantageously a high ease of use for an operator of the portable power tool can be achieved.

Zeichnungdrawing

Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung ist ein AusfĆ¼hrungsbeispiel der Erfindung dargestellt.Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown.

Es zeigen:

Fig. 1
eine erfindungsgemƤƟe tragbare Werkzeugmaschine mit einer erfindungsgemƤƟen Schnitttiefenbegrenzungsvorrichtung in einer schematischen Darstellung,
Fig. 2
eine Detailansicht der erfindungsgemƤƟen Schnitttiefenbegrenzungsvorrichtung mit einem in einem vorpositionierten Zustand befindlichen Anschlagelement einer Anschlageinheit der erfindungsgemƤƟen Schnitttiefenbegrenzungsvorrichtung in einer schematischen Darstellung,
Fig. 3
die erfindungsgemƤƟe tragbare Werkzeugmaschine mit einem in einem um eine Tauchschwenkachse geschwenkten Zustand befindlichen WerkzeugmaschinengehƤuse in einer schematischen Darstellung,
Fig. 4
eine Detailansicht der erfindungsgemƤƟen Schnitttiefenbegrenzungsvorrichtung mit dem in einem fixierten Zustand befindlichen Anschlagelement der Anschlageinheit in einer schematischen Darstellung und
Fig. 5
eine Detailansicht der an einer SchnitttiefenfĆ¼hrungseinheit der erfindungsgemƤƟen Schnitttiefenbegrenzungsvorrichtung angeordneten Anschlageinheit in einer schematischen Darstellung.
Show it:
Fig. 1
a portable power tool according to the invention with a cutting depth limiting device according to the invention in a schematic representation,
Fig. 2
a detailed view of the cutting depth limiting device according to the invention with a stop element located in a prepositioned state of a stop unit of the cutting depth limiting device according to the invention in a schematic representation,
Fig. 3
the portable power tool according to the invention with a machine tool housing located in a state pivoted about a plunger pivot axis, in a schematic illustration,
Fig. 4
a detailed view of the cutting depth limiting device according to the invention with the stop element located in a fixed state of the stop unit in a schematic representation and
Fig. 5
a detailed view of arranged on a cutting depth guide unit of the cutting depth limiting device according to the invention stop unit in a schematic representation.

Beschreibung des AusfĆ¼hrungsbeispielsDescription of the embodiment

Figur 1 zeigt eine als TauchkreissƤge ausgebildete tragbare Werkzeugmaschine 12 mit einer Schnitttiefenbegrenzungsvorrichtung 10. Die tragbare Werkzeugmaschine 12 umfasst ferner ein WerkzeugmaschinengehƤuse 38, das dazu vorgesehen ist, eine Antriebseinheit 40 der tragbaren Werkzeugmaschine 12 zu umschlieƟen. Die Antriebseinheit 40 umfasst eine Antriebswelle (hier nicht nƤher dargestellt) zu einem Antrieb eines mit einer Werkzeugaufnahme (hier nicht nƤher dargestellt) der tragbaren Werkzeugmaschine 12 koppelbaren Bearbeitungswerkzeugs 42 (Figuren 1 und 3) auf eine, einem Fachmann bereits bekannte Art und Weise. Ferner umfasst die tragbare Werkzeugmaschine 12 eine als Grundplatte oder als Gleitschuh ausgebildete Auflageeinheit 44, mit der die tragbare Werkzeugmaschine 12 bei einer Bearbeitung eines WerkstĆ¼cks (hier nicht nƤher dargestellt) auf einer WerkstĆ¼ckoberflƤche des WerkstĆ¼cks aufliegt bzw. bei einer Bewegung zu einer Einbringung eines Schnitts in das WerkstĆ¼ck auf der WerkstĆ¼ckoberflƤche gleitet. An der Auflageeinheit 44 ist zudem eine Schutzeinheit 46 der tragbaren Werkzeugmaschine 12 angeordnet, die einen Bediener vor Verletzungen bei einer Bearbeitung des WerkstĆ¼cks mittels des Bearbeitungswerkzeugs 42 schĆ¼tzt. Hierbei ist die Schutzeinheit 46 als Schutzhaube ausgebildet, die das Bearbeitungswerkzeug 42 in einem montierten Zustand entlang einer Rotationsrichtung der Antriebswelle um mehr als 160Ā° umschlieƟt. Die Schutzeinheit 46 weist ferner ein Absaugkopplungselement 48 auf, das mit einer Absaugeinheit (hier nicht nƤher dargestellt) zu einer Absaugung von abgetragenen WerkstĆ¼ckpartikeln wƤhrend einer Bearbeitung des WerkstĆ¼cks verbindbar ist. Das WerkzeugmaschinengehƤuse 38 ist relativ zur Auflageeinheit 44 an der Schutzeinheit 46 schwenkbar gelagert. Hierbei ist das WerkzeugmaschinengehƤuse 38 auf eine, einem Fachmann bereits bekannte Art und Weise schwenkbar um eine Tauchschwenkachse 50 des WerkzeugmaschinengehƤuses 38 gelagert. Ferner ist das WerkzeugmaschinengehƤuse 38 zusammen mit der Schutzeinheit 46 auf eine, einem Fachmann bereits bekannte Art und Weise um eine Neigeschwenkachse 52 relativ zur Auflageeinheit 44 schwenkbar an der Auflageeinheit 44 gelagert. Die Tauchschwenkachse 50 erstreckt sich zumindest im Wesentlichen senkrecht zur Neigeschwenkachse 52. FIG. 1 1 shows a portable power tool 12 formed as a circular plunge saw with a cutting depth limiting device 10. The portable power tool 12 further comprises a power tool housing 38, which is provided to surround a drive unit 40 of the portable power tool 12. The drive unit 40 comprises a drive shaft (not shown here in detail) for driving a tool holder (not shown here in greater detail) of the portable power tool 12 which can be coupled to a machining tool 42 (FIG. FIGS. 1 and 3 ) in a manner already known to a person skilled in the art. Further, the portable power tool 12 comprises a base unit or as a sliding block formed support unit 44, with the portable machine tool 12 during a machining of a workpiece (not shown here) rests on a workpiece surface of the workpiece or in a movement to an introduction of a cut in the workpiece slides on the workpiece surface. On the support unit 44, a protective unit 46 of the portable power tool 12 is also arranged, which protects an operator from injury during machining of the workpiece by means of the machining tool 42. In this case, the protective unit 46 is designed as a protective hood, which encloses the machining tool 42 in an assembled state along a rotational direction of the drive shaft by more than 160 Ā°. The protection unit 46 further has a suction coupling element 48, which is connectable to a suction unit (not shown here in detail) to a suction of removed workpiece particles during machining of the workpiece. The machine tool housing 38 is mounted pivotably relative to the support unit 44 on the protection unit 46. In this case, the machine tool housing 38 is mounted pivotably about a dip pivot axis 50 of the machine tool housing 38 in a manner already known to a person skilled in the art. Further, the machine tool housing 38 is mounted together with the protection unit 46 in a manner already known to a person skilled in the art about a tilting pivot axis 52 pivotable relative to the support unit 44 on the support unit 44. The dip pivot axis 50 extends at least substantially perpendicular to the tilting pivot axis 52.

Die Schnitttiefenbegrenzungsvorrichtung 10 fĆ¼r die tragbare Werkzeugmaschine 12 ist zu einer Einstellung einer Begrenzung einer Schnitttiefe auf einer dem WerkzeugmaschinengehƤuse 38 zugewandten Seite der Schutzeinheit 46 an der Schutzeinheit 46 angeordnet. Es ist jedoch auch denkbar, dass die Schnitttiefenbegrenzungsvorrichtung 10 an einer anderen, einem Fachmann als sinnvoll erscheinenden Position an der Schutzeinheit 46 oder einem anderen Bauteil der tragbaren Werkzeugmaschine 12 angeordnet ist. Die Schnitttiefenbegrenzungsvorrichtung 10 umfasst zumindest eine SchnitttiefenfĆ¼hrungseinheit 14 und zumindest eine Anschlageinheit 16, die zumindest ein beweglich gelagertes Anschlagelement 18 und zumindest ein Fixierelement 20 zu einer Fixierung des Anschlagelements 18 in zumindest einer Position aufweist. Hierbei ist das Anschlagelement 18 zu einer Einstellung einer Begrenzung einer Schnitttiefe des Bearbeitungswerkzeugs 42 entlang eines FĆ¼hrungselements 28 der SchnitttiefenfĆ¼hrungseinheit 14 beweglich gelagert.The cutting depth limiting device 10 for the portable power tool 12 is arranged to set a limitation of a cutting depth on a side facing the machine tool housing 38 side of the protection unit 46 on the protection unit 46. However, it is also conceivable that the cutting depth limiting device 10 is arranged at another, to a skilled person appear appropriate position on the protection unit 46 or other component of the portable power tool 12. The cutting depth limiting device 10 comprises at least one cutting depth guide unit 14 and at least one stop unit 16 which has at least one movably mounted stop element 18 and at least one fixing element 20 for fixing the stop element 18 in at least one position. In this case, the stop element 18 is movably mounted for setting a limitation of a cutting depth of the machining tool 42 along a guide element 28 of the cutting depth guide unit 14.

Die Anschlageinheit 16 umfasst zu einer Bewegung des Anschlagelements 18 zumindest ein Bedienelement 32, das verschiebbar in einer FĆ¼hrungsausnehmung 34 des FĆ¼hrungselements 28 der SchnitttiefenfĆ¼hrungseinheit 14 gelagert ist. Das Anschlagelement 18 ist schwenkbar um eine Bewegungsachse 36 des Anschlagelements 18 an dem beweglich am FĆ¼hrungselement 28 der SchnitttiefenfĆ¼hrungseinheit 14 gelagerten Bedienelement 32 der Anschlageinheit 16 gelagert. Die FĆ¼hrungsausnehmung 34 ist in einer zumindest im Wesentlichen senkrecht zur Bewegungsachse 36 des Anschlagelements 18 verlaufenden Ebene angeordnet. Hierbei weist die FĆ¼hrungsausnehmung 34, betrachtet entlang einer Gesamterstreckung der FĆ¼hrungsausnehmung 34, einen bogenfƶrmigen Verlauf auf. Es ist jedoch auch denkbar, dass die FĆ¼hrungsausnehmung 34 an einer anderen, einem Fachmann als sinnvoll erscheinenden Position am FĆ¼hrungselement 28 angeordnet ist, wie beispielsweise an einer dem WerkzeugmaschinengehƤuse 38 abgewandten Seite des FĆ¼hrungselements 28 usw. Zudem ist es ebenfalls denkbar, dass die FĆ¼hrungsausnehmung 34 einen anderen, einem Fachmann als sinnvoll erscheinenden Verlauf aufweist, wie beispielsweise einen geradlinigen Verlauf usw.The stop unit 16 comprises, for a movement of the stop element 18, at least one operating element 32 which is displaceably mounted in a guide recess 34 of the guide element 28 of the cutting depth guide unit 14. The stop element 18 is mounted pivotably about a movement axis 36 of the stop element 18 on the operating element 32 of the stop unit 16 movably mounted on the guide element 28 of the cutting depth guide unit 14. The guide recess 34 is arranged in a plane extending at least substantially perpendicular to the movement axis 36 of the stop element 18. Here, the guide recess 34, viewed along an overall extension of the guide recess 34, an arcuate course. However, it is also conceivable for the guide recess 34 to be arranged on the guide element 28 at another position which would appear meaningful to a person skilled in the art, for example on a side of the guide element 28 facing away from the machine tool housing 38 etc. In addition, it is also conceivable for the guide recess 34 another, which appears appropriate to a person skilled in the course, such as a straight course, etc.

Des Weiteren umfasst das FĆ¼hrungselement 28 zumindest eine Rastbahn 24, die korrespondierend mit dem Fixierelement 20 ausgebildet ist. Hierbei ist die Rastbahn 24 als SƤgezahnrastbahn ausgebildet (Figuren 2 und 4). Das FĆ¼hrungselement 28 umfasst zudem zumindest eine weitere Rastbahn 26, die dazu vorgesehen ist, mit einem Vorpositionierungselement 22 der Anschlageinheit 16 zu einer Vorpositionierung des Anschlagelements 18 zusammenzuwirken(Figuren 2 und 4). Somit umfasst die SchnitttiefenfĆ¼hrungseinheit 14 zumindest ein FĆ¼hrungselement 28, das zumindest eine weitere Rastbahn 26 aufweist, mit der zumindest das Vorpositionierungselement 22 in zumindest einer Position zusammenwirkt. Das Vorpositionierungselement 22 ist hierbei am Anschlagelement 18 angeordnet. Die weitere Rastbahn 26 ist als Dreieckszahnrastbahn ausgebildet, wobei einzelne ZƤhne der weiteren Rastbahn 26 als gleichschenklige Dreiecke ausgebildet sind.Furthermore, the guide element 28 comprises at least one detent track 24, which is formed corresponding to the fixing element 20. Here is the Detent track 24 designed as SƤgezahnrastbahn ( Figures 2 and 4 ). The guide element 28 additionally comprises at least one further latching track 26, which is provided to cooperate with a pre-positioning element 22 of the stop unit 16 to pre-position the stop element 18 ( Figures 2 and 4 ). Thus, the cutting depth guide unit 14 comprises at least one guide element 28, which has at least one further latching track 26, with which at least the Vorpositionierungselement 22 cooperates in at least one position. The Vorpositionierungselement 22 is in this case arranged on the stop element 18. The further detent track 26 is formed as a triangular tooth detent track, wherein individual teeth of the further detent track 26 are formed as isosceles triangles.

Die Rastbahn 24 und die weitere Rastbahn 26 verlaufen auf einer dem WerkzeugmaschinengehƤuse 38 zugewandten Seite. Hierbei verlaufen die Rastbahn 24 und die weitere Rastbahn 26 zumindest im Wesentlichen parallel. Es ist jedoch auch denkbar, dass das FĆ¼hrungselement 28 lediglich eine einzige Rastbahn 24 aufweist, die dazu vorgesehen ist, mit dem Fixierelement 20 und dem Vorpositionierungselement 22 zusammenzuwirken. Auf einer der Rastbahn 24 und der weiteren Rastbahn 26 abgewandten Seite des FĆ¼hrungselements 28 weist das FĆ¼hrungselement 28 eine MaƟskala 54 auf, die zu einer Anzeige einer einer mittels der Anschlageinheit 16 eingestellten Begrenzung einer Schnitttiefe entsprechenden Abmessung einer Schnitttiefe mit einem an dem Bedienelement 32 angeordneten Zeigerelement 56 zusammenwirkt (Figur 5). Es ist jedoch auch denkbar, dass die Schnitttiefenbegrenzungsvorrichtung 10 eine digitale Anzeigeeinheit zu einer Anzeige einer einer eingestellten Begrenzung einer Schnitttiefe entsprechenden Abmessung einer Schnitttiefe umfasst.The detent track 24 and the further detent track 26 extend on a machine tool housing 38 side facing. Here, the latching track 24 and the further latching track 26 extend at least substantially parallel. However, it is also conceivable that the guide element 28 has only a single detent track 24, which is intended to cooperate with the fixing element 20 and the pre-positioning element 22. On one of the detent track 24 and the further detent track 26 side facing away from the guide member 28, the guide member 28 on a scale 54, which corresponds to a display of a set by means of the stop unit 16 limit a depth of cut dimension of a depth of cut with a arranged on the control element 32 pointer element 56 cooperates ( FIG. 5 ). However, it is also conceivable that the cutting depth limiting device 10 comprises a digital display unit for displaying a dimension of a cutting depth corresponding to a set limit of a cutting depth.

Das Fixierelement 20 ist als Feststellfortsatz ausgebildet. Zu einer Fixierung des Anschlagelements 18 in zumindest einer Position relativ zum FĆ¼hrungselement 28 ist das Fixierelement 20 auf einer dem FĆ¼hrungselement 28 zugewandten Seite des Anschlagelements 18 angeordnet. Hierbei ist das Fixierelement 20 einstĆ¼ckig mit dem Anschlagelement 18 ausgebildet. Das Fixierelement 20 weist, betrachtet in einer zumindest im Wesentlichen senkrecht zur Bewegungsachse 36 des Anschlagelements 18 verlaufenden Ebene, eine polygonale Form auf. In der zumindest im Wesentlichen senkrecht zur Bewegungsachse 36 des Anschlagelements 18 verlaufenden Ebene weist das Anschlagelement 18 eine SƤgezahnform auf. Das Fixierelement 20 ist korrespondierend mit der als SƤgezahnrastbahn ausgebildeten Rastbahn 24 ausgebildet. Insgesamt weist die Anschlageinheit 16 zumindest vier Fixierelemente 20 auf, die als FeststellfortsƤtze ausgebildet sind. Die vier Fixierelemente 20 weisen eine zueinander analoge Ausgestaltung auf und sind einstĆ¼ckig mit dem Anschlagelement 18 ausgebildet.The fixing element 20 is designed as a locking extension. In order to fix the stop element 18 in at least one position relative to the guide element 28, the fixing element 20 is arranged on a side of the stop element 18 facing the guide element 28. In this case, the fixing element 20 is formed integrally with the stop element 18. The fixing element 20 has, considered in a at least substantially perpendicular to the axis of movement 36 of the stop element 18 extending plane, a polygonal shape. In the plane extending at least substantially perpendicular to the movement axis 36 of the stop element 18, the stop element 18 has a sawtooth shape. The fixing element 20 is formed corresponding to the detent path 24 designed as a sawtooth detent track. Overall, the stop unit 16 has at least four fixing elements 20, which are designed as locking projections. The four fixing elements 20 have an analogous configuration to each other and are formed integrally with the stop element 18.

Die Anschlageinheit 16 umfasst ferner zumindest das Vorpositionierungselement 22, das das Fixierelement 20 in zumindest einem Zustand in Richtung einer Freigabeposition des Fixierelements 20 mit einer Kraft beaufschlagt. Das Vorpositionierungselement 22 bewegt in zumindest einem Zustand das Fixierelement 20 von zumindest der Rastbahn 24 des FĆ¼hrungselements 28 der SchnitttiefenfĆ¼hrungseinheit 14 weg. Hierbei bewegt das Vorpositionierungselement 22 das Fixierelement 20 zumindest in einem vom WerkzeugmaschinengehƤuse 38 der tragbaren Werkzeugmaschine 12 unbelasteten Zustand des Anschlagelements 18 weg von der Rastbahn 24 des FĆ¼hrungselements 28. Hierdurch wird das Fixierelement 20 in eine Freigabeposition des Fixierelements 20 Ć¼berfĆ¼hrt. In der Freigabeposition des Fixierelements 20 ist das Anschlagelement 18 zu einer Einstellung einer Schnitttiefe relativ zum FĆ¼hrungselement 28 durch eine Bewegung des Bedienelements 32 in der FĆ¼hrungsausnehmung 34 entlang der FĆ¼hrungsausnehmung 34 beweglich.The stop unit 16 further comprises at least the Vorpositionierungselement 22, which acts on the fixing element 20 in at least one state in the direction of a release position of the fixing element 20 with a force. The Vorpositionierungselement 22 moves in at least one state, the fixing element 20 of at least the latching track 24 of the guide member 28 of the cutting depth guide unit 14 away. In this case, the Vorpositionierungselement 22 moves the fixing member 20 at least in an unloaded from the machine tool housing 38 of the portable power tool 12 state of the stop member 18 away from the detent track 24 of the guide member 28. As a result, the fixing member 20 is transferred to a release position of the fixing element 20. In the release position of the fixing element 20, the stop element 18 is movable to adjust a depth of cut relative to the guide element 28 by a movement of the operating element 32 in the guide recess 34 along the guide recess 34.

Das Vorpositionierungselement 22 ist dazu vorgesehen, das Anschlagelement 18 gegen eine Bewegung entlang der Rastbahn 24 bzw. entlang der FĆ¼hrungsausnehmung 34 infolge einer auf das Anschlagelement 18 wirkenden Gewichtskraft zu sichern. Hierzu ist das Vorpositionierungselement 22 als federbelasteter Rastbolzen ausgebildet (Figuren 2 und 4). Somit ist das Vorpositionierungselement 22 relativ zum Anschlagelement 18 beweglich gelagert. Das Anschlagelement 18 weist zu einer Aufnahme des Vorpositionierungselements 22 zumindest eine Aufnahmeausnehmung 30 auf, in der das Vorpositionierungselement 22 zumindest teilweise angeordnet ist. Die Anschlageinheit 16 umfasst zu einer Belastung des Vorpositionierungselements 22 mit einer Kraft in Richtung des FĆ¼hrungselements 28 bzw. in Richtung der weiteren Rastbahn 26 zumindest ein Federelement 58 (Figuren 2 und 4). Das Federelement 58 ist als Schraubendruckfeder ausgebildet. Es ist jedoch auch denkbar, dass das Federelement 58 eine andere, einem Fachmann als sinnvoll erscheinende Ausgestaltung aufweist. Das Federelement 58 ist in der Aufnahmeausnehmung 30 des Anschlagelements 18 angeordnet. Zudem ist das Federelement 58 in einer Ausnehmung 60 des Vorpositionierungselements 22 angeordnet. Somit stĆ¼tzt sich das Federelement 58 mit einem Ende am Anschlagelement 18 ab und mit einem weiteren Ende stĆ¼tzt sich das Federelement 58 an dem Vorpositionierungselement 22 ab. Somit wird das Anschlagelement 18 durch eine Federkraft des Federelements 58 und durch das Zusammenwirken des Vorpositionierungselements 22 mit der weiteren Rastbahn 26 mit einer Kraft in eine vom FĆ¼hrungselement 28 abgewandte Richtung beaufschlagt. Hierdurch wird auch das Fixierelement 20 in zumindest einem Zustand in Richtung einer Freigabeposition des Fixierelements 20 mit einer Kraft beaufschlagt.The Vorpositionierungselement 22 is intended to secure the stop member 18 against movement along the latching track 24 and along the guide recess 34 due to a force acting on the stopper member 18 weight. For this purpose, the pre-positioning element 22 is designed as a spring-loaded detent pin ( Figures 2 and 4 ). Thus, the pre-positioning element 22 is movably mounted relative to the stop element 18. The stop element 18 has, for receiving the pre-positioning element 22, at least one receiving recess 30, in which the pre-positioning element 22 is arranged at least partially. The stop unit 16 comprises a load on the Vorpositionierungselements 22 with a force in the direction of the guide member 28 or in the direction of the further latching track 26 at least one spring element 58 (FIG. Figures 2 and 4 ). The spring element 58 is designed as a helical compression spring. However, it is also conceivable that the spring element 58 has another, a skilled person appear appropriate design. The spring element 58 is arranged in the receiving recess 30 of the stop element 18. In addition, the spring element 58 is arranged in a recess 60 of the Vorpositionierungselements 22. Thus, the spring element 58 is supported with one end on the stop element 18 and with a further end, the spring element 58 is supported on the Vorpositionierungselement 22 from. Thus, the stop element 18 is acted upon by a spring force of the spring element 58 and by the interaction of the Vorpositionierungselements 22 with the further latching track 26 with a force in a direction away from the guide member 28 direction. As a result, the fixing element 20 is also subjected to a force in at least one state in the direction of a release position of the fixing element 20.

Zu einer Beweglichkeit des Anschlagelements 18 durch eine Bewegung des Bedienelements 32 in der FĆ¼hrungsausnehmung 34 in einer Freigabeposition des Fixierelements 20 weist das Vorpositionierungselement 22 einen halbkugelfƶrmigen Rastkopf 62 auf. Der Rastkopf 62 wirkt hierbei mit der weiteren Rastbahn 26 zusammen. Hierbei wird der Rastkopf 62 mittels einer Federkraft des Federelements 58 in Richtung des FĆ¼hrungselements 28 bzw. der weiteren Rastbahn 26 beaufschlagt. Bei einer Bewegung des Anschlagelements 18 durch eine Bewegung des Bedienelements 32 in der FĆ¼hrungsausnehmung 34 kann der Rastkopf 62 infolge eines Ɯberrastens entlang der weiteren Rastbahn 26 gleiten. Hierbei werden der Rastkopf 62 und das Vorpositionierungselement 22 entgegen einer Federkraft des Federelements 58 in Richtung des Anschlagelements 18 in die Aufnahmeausnehmung 30 des Anschlagelements 18 hineingedrĆ¼ckt. Sobald eine Bewegung des Bedienelements 32 beendet wird, werden das Vorpositionierungselement 22 und der Rastkopf 62 durch eine Federkraft des Federelements 58 in Eingriff von zumindest zwei Rastbereichen bzw. von zumindest zwei RastzƤhnen der weiteren Rastbahn 26 gebracht. Hierdurch wird sichergestellt, dass das Anschlagelement 18 sich nach einer Einstellung einer Schnitttiefe nicht durch eine auf das Anschlagelement 18 einwirkende Gewichtskraft aus der eingestellten Position bewegt. Somit ist das Anschlagelement 18 mittels des Vorpositionierungselements 22 vorpositioniert.For a mobility of the stop element 18 by a movement of the operating element 32 in the guide recess 34 in a release position of the fixing element 20, the pre-positioning element 22 has a hemispherical latching head 62. The latching head 62 interacts here with the further latching track 26. Here, the latching head 62 is acted upon by means of a spring force of the spring element 58 in the direction of the guide element 28 and the further latching track 26. During a movement of the stop element 18 by a movement of the operating element 32 in the guide recess 34, the latching head 62 can slide as a result of overriding along the further latching track 26. Here, the latching head 62 and the pre-positioning element 22 are pressed against a spring force of the spring element 58 in the direction of the stop element 18 in the receiving recess 30 of the stop element 18. As soon as a movement of the operating element 32 is terminated, the pre-positioning element 22 and the latching head 62 are brought into engagement with at least two latching areas or at least two latching teeth of the further latching track 26 by a spring force of the spring element 58. This ensures that the stop element 18 is not adjusted by a force acting on the stop element 18 weight force from the set after setting a depth of cut Position moves. Thus, the stop element 18 is prepositioned by means of the pre-positioning element 22.

Bei einer Bearbeitung eines WerkstĆ¼cks (hier nicht nƤher dargestellt) wird nach einer Einstellung einer Schnitttiefe mittels einer Positionierung des Anschlagelements 18 das WerkzeugmaschinengehƤuse 38 um die Tauchschwenkachse 50 relativ zur Auflageeinheit 44 in Richtung der Auflageeinheit 44 geschwenkt (Figur 3). Hierdurch kommen SchneidzƤhne des Bearbeitungswerkzeugs 42 zu einer Bearbeitung des WerkstĆ¼cks in Kontakt bzw. in Eingriff mit dem WerkstĆ¼ck. Das WerkzeugmaschinengehƤuse 38 wird solange um die Tauchschwenkachse 50 geschwenkt, bis ein Anschlagbereich 64 des WerkzeugmaschinengehƤuses 38 am Anschlagelement 18 anschlƤgt. Hierdurch wird ein Moment erzeugt, das das Anschlagelement 18 um die Bewegungsachse 36 des Anschlagelements 18 relativ zum Bedienelement 32 schwenkt. Infolge der Schwenkbewegung des Anschlagelements 18 relativ zum Bedienelement 32 gelangt das Fixierelement 20 in Eingriff mit der Rastbahn 24 bzw. mit RastzƤhnen der Rastbahn 24. Das Fixierelement 20 ist somit in einer Sperrposition, in der eine Bewegung des Anschlagelements 18 entlang der FĆ¼hrungsausnehmung 34 durch ein Zusammenwirken des Fixierelements 20 und der Rastbahn 24 verhindert wird. Das Vorpositionierungselement 22 greift in einer Sperrposition des Fixierelements 20 stets in die weitere Rastbahn 26 ein.When machining a workpiece (not shown in detail here), the machine tool housing 38 is pivoted about the dip pivot axis 50 relative to the support unit 44 in the direction of the support unit 44 after setting a depth of cut by means of a positioning of the stop element 18 ( FIG. 3 ). As a result, cutting teeth of the machining tool 42 come to a machining of the workpiece in contact or in engagement with the workpiece. The machine tool housing 38 is pivoted as long as the dip pivot axis 50 until a stop portion 64 of the machine tool housing 38 abuts the stop element 18. As a result, a moment is generated which pivots the stop element 18 about the movement axis 36 of the stop element 18 relative to the operating element 32. As a result of the pivotal movement of the stop element 18 relative to the operating element 32, the fixing element 20 engages with the latching track 24 or with latching teeth of the latching track 24. The fixing element 20 is thus in a locking position, in which a movement of the stop element 18 along the guide recess 34 by a Cooperation of the fixing element 20 and the latching track 24 is prevented. The Vorpositionierungselement 22 always engages in a locking position of the fixing element 20 in the further latching track 26 a.

Sobald das WerkzeugmaschinengehƤuse 38 infolge einer Unterbrechung einer Bearbeitung des WerkstĆ¼cks usw. in eine von der Auflageeinheit 44 abgewandte Richtung geschwenkt wird, bewegt das Vorpositionierungselement 22 bzw. eine auf das Vorpositionierungselement 22 wirkende Federkraft des Federelements 58 das Fixierelement 20 in eine von der Rastbahn 26 weg gerichtete Richtung in eine Freigabeposition des Fixierelements 20. Hierbei wird das Anschlagelement 18 durch das Vorpositionierungselement 22 bzw. eine auf das Vorpositionierungselement 22 wirkende Federkraft des Federelements 58 in eine vom FĆ¼hrungselement 28 weggerichtete Richtung um die Bewegungsachse 36 des Anschlagelements 18 relativ zum Bedienelement 32 geschwenkt. Das Vorpositionierungselement 22 bleibt hierbei in Kontakt mit der weiteren Rastbahn 26 und vorpositioniert das Anschlagelement 18 in einer Position relativ zum FĆ¼hrungselement 28.As soon as the machine tool housing 38 is pivoted in a direction away from the support unit 44 as a result of an interruption of machining of the workpiece, the pre-positioning element 22 or a spring force of the spring element 58 acting on the pre-positioning element 22 moves the fixing element 20 away from the latching track 26 Direction in a release position of the fixing 20. Here, the stop member 18 is pivoted by the Vorpositionierungselement 22 and acting on the Vorpositionierungselement 22 spring force of the spring element 58 in a direction away from the guide member 28 direction about the movement axis 36 of the stop member 18 relative to the control element 32. The pre-positioning element 22 in this case remains in contact with the further latching track 26 and pre-positions the stop element 18 in a position relative to the guide element 28.

Des Weiteren weist die Anschlageinheit 16 zumindest ein FĆ¼hrungsschienenausgleichselement 66 auf (Figur 2). Das FĆ¼hrungsschienenausgleichselement 66 ist dazu vorgesehen, eine Abstandsdifferenz einer AuflageflƤche 68 (Figur 1) relativ zu einer WerkstĆ¼ckoberflƤche bei einer Nutzung der tragbaren Werkzeugmaschine 12 mit einer FĆ¼hrungsschienenvorrichtung (hier nicht nƤher dargestellt) im Vergleich zu einer Nutzung der tragbaren Werkzeugmaschine 12 entkoppelt von der FĆ¼hrungsschienenvorrichtung auszugleichen. Das FĆ¼hrungsschienenausgleichselement 66 ist hierbei drehbar um eine zumindest im Wesentlichen parallel zur Bewegungsachse 36 des Anschlagelements 18 verlaufende Bewegungsachse 70 des FĆ¼hrungsschienenausgleichselements 66 am Anschlagelement 18 gelagert. Bei einer Nutzung der tragbaren Werkzeugmaschine 12 mit einer FĆ¼hrungsschienenvorrichtung wird infolge einer Drehung des FĆ¼hrungsschienenausgleichselements 66 um die Bewegungsachse 70 des FĆ¼hrungsschienenausgleichselements 66 relativ zum Anschlagelement 18 eine neue AnschlagflƤche fĆ¼r den Anschlagbereich 64 des WerkzeugmaschinengehƤuses 38 bereitgestellt, die einen Ausgleich der Abstandsdifferenz ermƶglicht. Zu einer Bewegung des FĆ¼hrungsschienenausgleichselements 66 weist die Anschlageinheit 16 zumindest ein Drehhebelbedienelement 72 auf (Figur 2). Das Drehhebelbedienelement 72 ist am FĆ¼hrungsschienenausgleichselement 66 fixiert.Furthermore, the stop unit 16 has at least one guide rail compensation element 66 (FIG. FIG. 2 ). The guide rail compensation element 66 is intended to provide a distance difference of a support surface 68 (FIG. FIG. 1 ) relative to a workpiece surface when using the portable power tool 12 with a guide rail device (not shown in detail here) compared to a use of the portable power tool 12 decoupled from the guide rail device compensate. The guide rail compensation element 66 is in this case mounted rotatably about an at least substantially parallel to the movement axis 36 of the stop element 18 extending movement axis 70 of the guide rail compensation element 66 on the stop element 18. When using the portable power tool 12 with a guide rail device, a new abutment surface for the abutment portion 64 of the machine tool housing 38 is provided as a result of rotation of the guide rail compensation element 66 about the movement axis 70 of the guide rail compensation element 66 relative to the stop element 18, which allows compensation of the distance difference. For a movement of the guide rail compensation element 66, the stop unit 16 has at least one rotary lever operating element 72 (FIG. FIG. 2 ). The rotary lever operating element 72 is fixed to the guide rail compensation element 66.

Claims (10)

  1. Cutting-depth limiting device for portable power tools, having at least one cutting-depth guide unit (14) and having at least one stop unit (16), which latter has at least one movably mounted stop element (18) and at least one fixing element (20) for fixing the stop element (18) in at least one position, wherein the stop unit (16) comprises at least one prepositioning element (22), which, in at least one state, subjects the fixing element (20) to a force in the direction of a release position of the fixing element (20), characterized in that the fixing element (20) is moved, by a movement of a power tool housing (38) in the direction of the fixing element (20) or by a force effect of a power tool housing (38) on the fixing element (20), into a blocking position of the fixing element (20), in which the fixing element (20) fixes the stop element (18) in at least one position relative to the guide element (28).
  2. Cutting-depth limiting device according to Claim 1, characterized in that the prepositioning element (22), in at least one state, moves the fixing element (20) away from at least one latching path (24, 26) of a guide element (28) of the cutting-depth guide unit (14).
  3. Cutting-depth limiting device according to one of the preceding claims, characterized in that the prepositioning element (22) is movably mounted relative to the stop element (18).
  4. Cutting-depth limiting device according to one of the preceding claims, characterized in that the stop element (18) comprises at least one receiving recess (30), in which the prepositioning element (22) is at least partially disposed.
  5. Cutting-depth limiting device according to one of the preceding claims, characterized in that the prepositioning element (22) is configured as a spring-loaded latching pin.
  6. Cutting-depth limiting device according to one of the preceding claims, characterized in that the stop element (18) is pivotably mounted on a control element (32) of the stop unit (16), which control element is movably mounted on a guide element (28) of the cutting-depth guide unit (14).
  7. Cutting-depth limiting device according to one of Claims 1 to 5, characterized in that the stop unit (16), for a movement of the stop element (18), comprises at least one control element (32), which is displaceably mounted in a guide recess (34) of a guide element (28) of the cutting-depth guide unit (14).
  8. Cutting-depth limiting device according to Claim 7, characterized in that the guide recess (34) is disposed in a plane running at least substantially perpendicular to a motional axis (36) of the stop element (18).
  9. Cutting-depth limiting device according to one of the preceding claims, characterized in that the cutting-depth guide unit (14) comprises at least one guide element (28), which guide element has at least one latching path (24, 26), with which at least the prepositioning element (22) cooperates in at least one position.
  10. Portable power tool, in particular circular saw, having at least one cutting-depth limiting device according to one of the preceding claims.
EP13726738.1A 2012-07-09 2013-05-29 Depth cut limiting device Active EP2869974B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012211942.6A DE102012211942A1 (en) 2012-07-09 2012-07-09 Cutting depth limiter
PCT/EP2013/061005 WO2014009052A1 (en) 2012-07-09 2013-05-29 Cutting-depth limiting device

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EP2869974A1 EP2869974A1 (en) 2015-05-13
EP2869974B1 true EP2869974B1 (en) 2018-07-11

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EP13726738.1A Active EP2869974B1 (en) 2012-07-09 2013-05-29 Depth cut limiting device

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US (1) US9908256B2 (en)
EP (1) EP2869974B1 (en)
CN (1) CN104428111B (en)
DE (1) DE102012211942A1 (en)
WO (1) WO2014009052A1 (en)

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* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
US10131042B2 (en) 2013-10-21 2018-11-20 Milwaukee Electric Tool Corporation Adapter for power tool devices
DE102015101907A1 (en) * 2015-02-10 2016-08-11 Festool Gmbh Hand-ripper with a depth adjustment device
JP6232157B1 (en) 2017-03-31 2017-11-15 ę—„ę–°č£½é‹¼ę Ŗ式会ē¤¾ Quality evaluation method for steam-treated products
US10875109B1 (en) 2018-04-30 2020-12-29 Kreg Enterprises, Inc. Adaptive cutting system
DE102019003737B3 (en) * 2019-05-28 2020-09-03 Metabowerke Gmbh Hand machine tool
DE102019208919A1 (en) * 2019-06-19 2020-12-24 Robert Bosch Gmbh Sawing machine tool

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US4856394A (en) * 1988-04-14 1989-08-15 Porter-Cable Corporation Portable circular saw
US6108916A (en) * 1998-08-14 2000-08-29 Milwaukee Electric Tool Corporation Movable handle for a power tool
JP2003291102A (en) * 2002-04-02 2003-10-14 Makita Corp Circular saw
CN201483580U (en) * 2009-04-30 2010-05-26 č‹å·žå®ę—¶å¾—ē”µåŠØå·„å…·ęœ‰é™å…¬åø Bench saw
DE202009013147U1 (en) * 2009-09-30 2009-12-17 Robert Bosch Gmbh Hand tool with oscillating drivable tool
CN102114555B (en) * 2010-01-04 2014-05-28 ę³‰å³°(äø­å›½)č“øę˜“ęœ‰é™å…¬åø Electric tool

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US20150158198A1 (en) 2015-06-11
EP2869974A1 (en) 2015-05-13
WO2014009052A1 (en) 2014-01-16
DE102012211942A1 (en) 2014-01-09
US9908256B2 (en) 2018-03-06
CN104428111A (en) 2015-03-18
CN104428111B (en) 2018-08-17

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