WO2012167975A1 - Dispositif de guidage d'un outil de levage - Google Patents

Dispositif de guidage d'un outil de levage Download PDF

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Publication number
WO2012167975A1
WO2012167975A1 PCT/EP2012/056670 EP2012056670W WO2012167975A1 WO 2012167975 A1 WO2012167975 A1 WO 2012167975A1 EP 2012056670 W EP2012056670 W EP 2012056670W WO 2012167975 A1 WO2012167975 A1 WO 2012167975A1
Authority
WO
WIPO (PCT)
Prior art keywords
side guide
tool
guide element
machining tool
hubwerkzeugführungsvorrichtung
Prior art date
Application number
PCT/EP2012/056670
Other languages
German (de)
English (en)
Inventor
Miguel Alexandre Pinto Da Costa
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2012167975A1 publication Critical patent/WO2012167975A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
    • B23D49/10—Hand-held or hand-operated sawing devices with straight saw blades
    • B23D49/16—Hand-held or hand-operated sawing devices with straight saw blades actuated by electric or magnetic power or prime movers
    • B23D49/162—Pad sawing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
    • B23D51/02—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of beds; of guiding arrangements for work-tables or saw carriers; of frames
    • B23D51/025—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of beds; of guiding arrangements for work-tables or saw carriers; of frames of arrangements for guiding the saw blade

Definitions

  • the invention is based on a Hubwerkmaschinemaschinenchtung, in particular of a Hubsägeblatt Installationsvornchtung, to guide a machining tool during a lifting movement along a stroke direction, with at least one side guide unit having at least one tool back guide element and a spaced relative to the tool back guide element arranged lateral guide element.
  • the side guide unit has at least one further side guide element which has a guide surface which is arranged spaced apart along the stroke direction relative to a guide surface of the side guide element.
  • a “side guide unit” is to be understood here in particular as meaning a unit which, during a movement of the machining tool along a predetermined direction of movement by means of a Excess of at least one constraining force transversely to the direction of movement on the machining tool at least largely prevents or reduces deflection of the machining tool from a movement path during the movement along the predetermined direction of movement and / or largely deflects the deflection of the machining tool during machining of a workpiece at least in a partial area of the machining tool prevented or reduced.
  • force of effort is intended here to define in particular a force which is intended to prevent a body from moving in at least one direction and / or to hold the body in motion on a path predetermined by the action of force on the body , Under. Orgeseherf should be understood in particular specially designed and / or specially equipped.
  • the side guide unit is provided to at least largely prevent or reduce bending of the machining tool in a direction transverse to the direction of movement.
  • tool back guide element is intended here to define in particular a guide element for exerting a constraining force on the machining tool, which is assigned to a machining tool back in an assembled state of the machining tool.
  • a constraining force can be generated by means of the tool back guide element, which acts on the machining tool in the direction of the workpiece to be machined during machining of a workpiece.
  • a "machining tool back” is to be understood here in particular as a side of the machining tool which faces away from a cutting edge of the machining tool.
  • lateral guide element is intended here to define, in particular, a guide element which is assigned to exert a constraining force on the machining tool of a side of the machining tool which connects the cutting edge and the machining tool back.
  • the side guide element and the further side guide element are provided to abut, at least in a guide state in each case with the guide surface on a side surface of the machining tool.
  • the side guide element preferably forms a first side guide element and the further side guide element advantageously forms a second side guide element. element.
  • the first side guide element and the second side guide element preferably extend in a mounted state in a plane extending at least substantially parallel to the stroke direction and / or containing the stroke direction.
  • first side guiding element and the second side guiding element clamp the plane extending at least substantially parallel to the lifting direction and / or containing the lifting direction.
  • first side guide element and the second side guide element extend in mutually different planes which extend at least substantially parallel to one another and at least substantially parallel to the stroke direction.
  • Configuration of the Hubwerkmaschinemaschinecht operationsvorraum can advantageously be achieved a precise guidance of the machining tool during a machining of a workpiece. It can thus be advantageously achieved a high accuracy of a work result in a machining of a workpiece with the machining tool.
  • the side guide element and the further side guide element are arranged at least on a movably mounted support arm of the side guide unit.
  • the term "movably mounted” should in particular define a mounting of an element, the element, in particular decoupled from elastic deformation of the element, a movement possibility along at least a distance greater than 1 mm, preferably greater than 5 mm and particularly preferably greater than 10 mm and / or has a possibility of movement about at least one axis by a Wnkel greater than 5 °, preferably greater than 10 ° and more preferably greater than 20 °.
  • the guide surface of the side guide element and the guide surface of the further side guide element can preferably due to the movable mounting of the support arm in a, viewed along a direction at least substantially perpendicular to the stroke direction, relative to the machining tool spaced position and in one on the side surface of the
  • the expression '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, viewed in particular in one plane, having a value of 90 °. close and the angle has a maximum deviation of in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °. It can structurally simple movement of the side guide element and the further side guide element can be achieved. Thus, for example, it is advantageously possible to switch on and / or off the operator desired by an operator
  • Support arm is pivotally mounted about a pivot axis.
  • the support arm is mounted translationally movable, such as in a guide groove which is arranged on a machine tool housing of a Hubwerkmaschinence exchangesvorraum comprehensive portable power tool.
  • the pivot axis extends at least substantially perpendicular to the stroke direction.
  • the pivot axis to run along another direction that appears appropriate to a person skilled in the art, such as, for example, at least substantially parallel to the stroke direction, etc.
  • the direction relative to the reference direction has a deviation in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °.
  • the side guide unit has at least one further movably mounted support arm, on which at least a third side guide element is arranged.
  • the further support arm is also pivotally mounted about the pivot axis.
  • the further support arm is mounted pivotably relative to the support arm about the pivot axis.
  • the third side guide element is preferably provided, at least in a guide state for guiding the machining tool with the as cooperate first side guide element formed side guide element.
  • the machining tool viewed along a direction at least substantially perpendicular to the stroke direction, arranged at least in a guide state between the first side guide element and the third side guide element.
  • the third side guide element is provided to cooperate, at least in a guide state for guiding the machining tool with the first side guide element and the second side guide element.
  • the guide surface of the first side guide element is at least in a guide state on a side surface of the machining tool, which extends at least substantially parallel to a side surface of the machining tool on which abuts a guide surface of the third side guide element at least in a guide state.
  • a precise guidance of the machining tool can be achieved by an action of constraining forces in two mutually opposite directions.
  • At least one fourth side guide element is arranged on the further support arm, which has a guide surface which is arranged spaced apart along the stroke direction relative to a guide surface of the third side guide element.
  • the fourth lateral guide element is preferably provided to cooperate, at least in a guide state for guiding the machining tool, with the further lateral guide element designed as a second lateral guide element.
  • the machining tool viewed along a direction at least substantially perpendicular to the stroke direction, at least in a guide state between the second side guide element and the fourth side guide element is arranged.
  • the four side guide elements can each be mounted relative to the support arms on the respective support arms and acted upon by a spring element of the side guide unit, such as by a compression spring, with a spring force in the direction of the machining tool, to a uniform concern of the four side guide elements on side surfaces of the machining tool, such as in a skew of the machining tool, to ensure.
  • a spring element of the side guide unit such as by a compression spring
  • a spring force in the direction of the machining tool to a uniform concern of the four side guide elements on side surfaces of the machining tool, such as in a skew of the machining tool, to ensure.
  • an adaptation to different thicknesses and tolerances of different processing tools can advantageously be achieved by the respective individual storage and the respective application of a spring force of each individual lateral guide element of the four lateral guide elements. It can be advantageously realized by a cooperation of the side guide elements and the tool back guide element a 3-point guidance of the machining tool.
  • the tool back guide element is pivotally mounted about a pivot axis.
  • the pivot axis of the tool back guide element extends at least substantially perpendicular to the pivot axis of the support arm and the further support arm.
  • the pivot axis of the tool back guide element has another, to a person skilled in the sense appearing orientation with respect to the pivot axis of the support arm and the other support arm.
  • the tool back guide element is arranged in a pendulum element, which is mounted pivotably about the pivot axis.
  • the pendulum element can be acted upon by means of a spring element of the side guide unit, such as a compression spring in the direction of the machining tool with a spring force.
  • the tool back guide element is designed as a pendulum guide element, which is intended to abut against the machining tool back during a pendulum stroke movement and to join in the pendulum stroke movement.
  • the tool back guide element is designed as a guide roller.
  • the term "guide roller” should in particular define a rotationally symmetrical element which preferably has a smaller extent along an axis of rotation of the element than along a direction which extends at least substantially perpendicularly to the axis of rotation
  • the guide roller is rotatably mounted in the pendulum element Guide roller trained tool back guide element on a conically extending guide into which the machining tool in a mounted state at least partially engaged and in particular touches a guide groove limiting effetsnutground the leadership.
  • a low-friction guidance of the machining tool, in particular in a pendulum stroke movement of the machining tool can be achieved.
  • the invention is based on a portable power tool with a Hubwerkmaschinemaschinemaschinechtraum invention.
  • a "portable machine tool” is to be understood here in particular as meaning a machine tool for machining workpieces that can be transported by an operator so that it can not be transported, while the portable machine tool has in particular a mass which is less than 40 kg, preferably less than 10
  • the portable power tool is designed as a jigsaw, but it is also conceivable that the portable power tool has another configuration that appears appropriate to a person skilled in the art, such as a saber saw, etc. It can be advantageous A safe guidance of the machining tool during machining of a workpiece can be achieved, thus advantageously achieving a precise work result with the portable tool machine.
  • the Hubwerkmaschinemaschinemaschinemaschinecht entrysvoroplasty invention and / or the portable power tool according to the invention should not be limited to the application and embodiment described above.
  • the lifting tool guiding device according to the invention and / or the portable power tool according to the invention can have a number deviating from a number of individual elements, components and units specified herein for fulfilling a mode of operation described herein.
  • Fig. 3 is a detailed view of the Hubwerkmaschinemaschinemaschinetechnik invention in a disassembled from a machine tool housing of the portable power tool according to the invention state in a schematic representation and
  • FIG. 1 shows a portable machine tool 46 designed as a jigsaw 48 with a lifting tool guiding device 10.
  • the portable machine tool is designed as a jigsaw 48 with a lifting tool guiding device 10.
  • machining tool 46 includes a machine tool housing 50 that encloses a drive unit 52 of the portable power tool 46 and a gear unit 54 of the portable power tool 46.
  • the drive unit 52 and the gear unit 54 are provided for oscillatingly driving a machining tool 12 clamped in a tool fastening device 56 of the portable power tool 46.
  • the machining tool 12 is driven to oscillate along a stroke direction 14.
  • the machining tool 12 thus performs a lifting movement along the stroke direction 14.
  • the machining tool 12 is designed as a jigsaw blade. However, it is also conceivable that the machining tool 12 is formed by another machining tool that appears appropriate to a person skilled in the art.
  • the drive unit 52 and the gear unit 54 are provided to drive the machining tool 12 oscillating along a direction transverse to the stroke direction 14.
  • the machining tool 12 executes a pendulum stroke movement in an operating state.
  • the portable power tool 46 has a cocking lever 66 for operating the tool mounting device 56.
  • the clamping lever 66 is pivotally mounted in the machine tool housing 50 and projects with an operating area out of the machine tool housing 50.
  • the portable power tool 46 and the machining tool 12 together form a tooling system.
  • the tool fastening device 56 has an output element 60 designed as a lifting rod 58 for the oscillating drive of the machining tool 12 (FIG. 3).
  • the machining tool 12 is coupled to the lifting rod 58 in an oscillating drive by means of the drive unit 52 and the gear unit 54 in a manner already known to a person skilled in the art.
  • the portable power tool 46 has a U-shaped protective bracket 64 attached to the machine tool housing 50, which serves as finger protection against accidental contact with the machining tool 12 and protects an operator of the portable power tool 46 from injury.
  • the Hubtechnikmaschineticiansvorraum 10 is provided to guide the machining tool 12 during a lifting movement along the stroke direction 14.
  • the Hubtechnikmaschinemaschinerion entrysvorraum 10 includes a Toka-to-dextrue unit 16, a tool back guide member 18 and a relative to
  • Tool back guide member 18 spaced apart side guide member 20 has ( Figure 2).
  • the tool back guide element 18 is pivotally mounted about a pivot axis 42.
  • the tool back guide element 18 is arranged in a pendulum element 62, which is arranged pivotably in the machine tool housing 50.
  • the tool back guide element 18 is designed as a guide roller 44.
  • the guide roller 44 and the shuttle member 62 form a pendulum stroke guide unit which is provided to guide the machining tool 12 during a pendulum stroke movement.
  • the machining tool 12 is located in a mounted Condition with a machining tool back of the machining tool 12, which faces away from a cutting edge of the machining tool 12, on the guide roller 44 at.
  • the machining tool back is arranged in a guide groove 44 of the guide roller 44 running conically with respect to a rotational axis of the guide roller 44.
  • the side guide unit 16 further has a further side guide element 22, which has a guide surface 24, which is arranged along the stroke direction 14 relative to a guide surface 26 of the side guide element 20 arranged spaced.
  • the side guide element 20 forms a first side guide element 20 of the side guide unit 16.
  • the further side guide element 22 forms a second side guide element 22 of the side guide unit 16.
  • the first side guide element 20 and the second side guide element 22 are arranged on a movably mounted support arm 28 of the side guide unit 16 (FIG ).
  • the first side guide member 20 and the second side guide member 22 may be integrally formed with each other or be formed of two separately formed components.
  • the support arm 28 is pivotally mounted about a pivot axis 30 ( Figure 4).
  • the pivot axis 30 extends at least substantially perpendicular to the stroke direction 14.
  • the side guide unit 16 has a further movably mounted support arm 32, on which a third side guide element 34 of the side guide unit 16 is arranged.
  • a fourth side guide element 36 of the side guide unit 16 is also arranged, which has a guide surface 38 which along the stroke direction 14 relative to a
  • Guide surface 40 of the third side guide member 34 is arranged spaced.
  • the third side guide member 34 and the fourth side guide member 36 may be integrally formed with each other or be formed of two separately formed components.
  • the four side guide elements 20, 22, 34, 36 to an automatic adaptation to an at least substantially perpendicular to the stroke direction 14 extending thickness of the machining tool 12 each individually on the support arm 28 and the other support arm 32nd stored and in each case by means of a spring element with a spring force in the direction of the machining tool 12 is applied.
  • the support arm 28 and the further support arm 32 with the respective side guide elements 20, 22, 34, 36 together form a guide tongs for guiding the machining tool 12 during a lifting movement along the stroke direction 14.
  • the guide surface 24 of the second side guide element 22 is, viewed along the at least substantially perpendicular to the stroke direction 14 extending direction opposite to the guide surface 38 of the fourth side guide member 36.
  • the portable power tool 46 has an operating element 72 embodied as a pushbutton, which is intended to achieve a closing of the guide tongs as a result of an actuation in order to laterally support the machining tool 12 by the side guide elements 20, 22, 34, 36.
  • the side guide elements 20, 22, 34, 36 are each formed by a sintered shaped body. However, it is also conceivable that the side guide elements 20, 22, 34, 36 are formed in another way, which appears appropriate to a person skilled in the art.
  • the side guide elements 20, 22, 34, 36 are fastened by means of fastening elements 68, 70 exchangeably to the support arm 28 and the further support arm 32.
  • the side guide elements 20, 22, 34, 36 each have a hard metal coating.
  • the side guide elements 20, 22, 34, 36 on the guide surfaces 24, 26, 38, 40 have another, to a person skilled in the appearing appropriate cover.
  • the support arm 28 and the further support arm 32 each include an at least substantially perpendicular to the stroke direction 14 in the direction of the machining tool 12 extending guide pins 74, 76.
  • the slide pins 74, 76 are substantially perpendicular to the stroke direction 14 in the direction of the machining tool 12 extending guide pins 74, 76.
  • the sliding blocks 82, 84 are movably mounted in the machine tool housing 50.
  • the slide guide grooves 78, 80 run around each wa 5 degrees inclined to the stroke direction 14.
  • the guide pins 74, 76 are moved due to the inclination of the sliding guide grooves 78, 80 along a direction transverse to the stroke direction 14.
  • the support arm 28 and the further support arm 32 are pivoted about the pivot axis 30.
  • the side guide elements 20, 22, 34, 36 thus come into contact with at least substantially mutually parallel side surfaces of the machining tool 12 and / or are pivoted away from the machining tool 12.
  • the sliding blocks 82, 84 are biased by means of spring elements (not shown here) axially along the stroke direction 14 in the direction of the machine tool housing 50.
  • the operating element 72 embodied as a pushbutton has a slide 86 which is intended to cooperate with a cam 88 of the first sliding block 82 (FIG. 3).
  • a slide 86 which is intended to cooperate with a cam 88 of the first sliding block 82 (FIG. 3).
  • the operating element 72 is displaced against a spring force of a spring element 90 of the side guide unit 16 in the direction of the machine tool housing 50.
  • an engagement between the slider 86 and the cam 88 is released.
  • the first slider 82, on which the cam 88 is disposed supported by a spring force, along the stroke direction 14 in a direction away from the side guide members 20, 22, 34, 36 direction slide.
  • Slider 82 further includes a driving pin 92 which is adapted to couple movements of the sliding blocks 82, 84.
  • the driving pin 92 releases the second sliding block 84 previously prevented from moving by the driving pin 92.
  • the second sliding block 84 is thus also moved as a result of a spring force in the direction away from the side guide elements 20, 22, 34, 36 direction.
  • the support arm 28 and the further support arm 32 are pivoted in the direction of the processing tool 12 by means of an interaction of the guide bolts 74, 76 and the slide guide grooves 78, 80.
  • the first side guide element 20 and the second side guide element 22 are thus in contact with the guide surfaces 24, 26 on a side surface of the processing tool 12 facing the first side guide element 20 and the second side guide element 22.
  • the third side guide member 34 and the fourth side guide member 36 are located with the guide surfaces 38, 40 on a third side guide member 34 and the fourth side guide member 36 facing side surface of the machining tool 12 at.
  • an actuating arm 94 of the lateral guidance unit 16 which is rigidly coupled to the tensioning lever 66 is pivoted (FIG. 4).
  • the actuating arm 94 has a ramp 96, which is intended to move the driving pin 92 in the direction of the side guide elements 20, 22, 34, 36.
  • the sliding blocks 82, 84 are also moved by means of the driving pin 92 in the direction of the side guide elements 20, 22, 34, 36.
  • the cam 88 releases a possibility of movement of the slide 86 running at least substantially perpendicular to the stroke direction 14.
  • the slider 86 of the operating element 72 is moved in a direction away from the machine tool housing 50 due to a spring force of the spring element 90.
  • the cam 88 is supported after the slider 86 has reached an initial position along the stroke direction 14 on the slider 86 from.
  • a movement of the sliding blocks 82, 84 along the lifting direction 14 into the side facing away from the side guide elements 20, 22, 34, 36 is thus prevented in the initial position of the slider 86 by the abutment of the cam 88 on the slider 86.
  • the support arm 28 and the further support arm 32 are pivoted about the pivot axis 30 as a result of the movement of the sliding blocks 82, 84 and thus due to the interaction of the guide pins 74, 76 and the sliding guide grooves 78, 80.
  • the guide surfaces 24, 28, 38, 40 of the side guide elements 20, 22, 34, 36 are thus moved away from the side surfaces of the machining tool 12.
  • the securing elements 20, 22, 34, 36 are thus arranged in the starting position of the slider 86 relatively spaced from the machining tool 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)

Abstract

L'invention concerne un dispositif de guidage d'un outil de levage, en particulier un dispositif de guidage d'une scie sauteuse, pour le guidage d'un outil d'usinage (12) pendant le mouvement de levage le long d'une direction de levage (14), comprenant au moins une unité de guidage latéral (16), qui présente au moins un élément de guidage en retour (18) de l'outil et un élément de guidage latéral (20) disposé à une certaine distance par rapport à l'élément de guidage en retour (18) de l'outil. Selon l'invention, l'unité de guidage latéral (16) présente au moins un autre élément de guidage latéral (22), qui présente une surface de guidage (24) disposée le long de la direction de levage (14) à une certaine distance par rapport à une surface de guidage (26) de l'élément de guidage latéral (20).
PCT/EP2012/056670 2011-06-06 2012-04-12 Dispositif de guidage d'un outil de levage WO2012167975A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110076984 DE102011076984A1 (de) 2011-06-06 2011-06-06 Hubwerkzeugführungsvorrichtung
DE102011076984.6 2011-06-06

Publications (1)

Publication Number Publication Date
WO2012167975A1 true WO2012167975A1 (fr) 2012-12-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/056670 WO2012167975A1 (fr) 2011-06-06 2012-04-12 Dispositif de guidage d'un outil de levage

Country Status (2)

Country Link
DE (1) DE102011076984A1 (fr)
WO (1) WO2012167975A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091701A (en) * 1976-11-01 1978-05-30 Gerber Garment Technology, Inc. Cutting machine having roller blade guide
DE10308828A1 (de) 2002-06-17 2004-01-08 Robert Bosch Gmbh Hand-Hubsägemaschine mit Sägeblattführungssystem
DE102007006481B3 (de) * 2007-02-09 2008-06-12 Festool Gmbh Hubsäge, insbesondere Stichsäge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091701A (en) * 1976-11-01 1978-05-30 Gerber Garment Technology, Inc. Cutting machine having roller blade guide
DE10308828A1 (de) 2002-06-17 2004-01-08 Robert Bosch Gmbh Hand-Hubsägemaschine mit Sägeblattführungssystem
DE102007006481B3 (de) * 2007-02-09 2008-06-12 Festool Gmbh Hubsäge, insbesondere Stichsäge

Also Published As

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