EP2974839B1 - Machine de coupe manuelle ayant deux paliers de guidage à onglet - Google Patents

Machine de coupe manuelle ayant deux paliers de guidage à onglet Download PDF

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Publication number
EP2974839B1
EP2974839B1 EP15175617.8A EP15175617A EP2974839B1 EP 2974839 B1 EP2974839 B1 EP 2974839B1 EP 15175617 A EP15175617 A EP 15175617A EP 2974839 B1 EP2974839 B1 EP 2974839B1
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EP
European Patent Office
Prior art keywords
bearing
mitre
hand
cutting machine
guide element
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Application number
EP15175617.8A
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German (de)
English (en)
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EP2974839A1 (fr
Inventor
Bernd Fleischmann
Björn Scherraus
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Festool GmbH
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Festool GmbH
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Publication of EP2974839A1 publication Critical patent/EP2974839A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B9/00—Portable power-driven circular saws for manual operation
    • B27B9/02—Arrangements for adjusting the cutting depth or the amount of tilting

Definitions

  • the invention relates to a hand cutting machine, in particular an electric hand sawing machine or wall chaser, according to the preamble of claim 1.
  • Such a hand cutting machine is for example in DE 36 15 848 A1 explained.
  • Such hand cutting machines are known, for example, as typical plunge circular saws. It is structurally advantageous if the miter bearings have a large longitudinal distance with respect to the working direction, i.e. that the drive assembly with the drive motor is arranged between the miter bearings and the large distance between the miter bearings enables the drive assembly to be held securely relative to the plate-like guide element, for example a so-called saw table.
  • a disadvantage of such constructions is that the penetration area with which the cutting tool cuts into the workpiece, for example a piece of wood, or an exit area at which the cutting tool emerges from the workpiece, is difficult to see. The operator must therefore orientate himself on other markings on the saw in order to achieve exact separating cuts or saw cuts.
  • the object of the present invention is to provide a hand cutting machine, in particular a hand sawing machine, which can be operated conveniently.
  • the cutting tool which can form part of the hand machine tool or hand cutting machine, is therefore not arranged in the working direction behind the front miter bearing, so that a distance is necessary between the miter bearing and the outer circumference of the cutting tool in order to allow the cutting tool to penetrate the workpiece or to make the exit area of the cutting tool visible from the workpiece.
  • the front miter bearing is not positioned in front of the cutting tool in the working direction, but rather laterally directly on its outer circumference or next to its outer circumference, so that the penetration area of the cutting tool into the workpiece or the exit area is more visible.
  • the hand cutting machine according to the invention is compact and easy to use.
  • the hand cutting machine is preferably a plunge-cut saw or a pendulum hood saw. In principle, however, the invention can also be used advantageously in wall chasers or the like.
  • the hand cutting machine is expediently an electric tool.
  • the drive motor is therefore preferably an electric motor.
  • the hand cutting machine can be battery-operated, thus it can be a hand cutting machine with an energy store. But it is also possible that the hand cutting machine is connected to the mains, that is to say that it has a connection cable for connection to an electrical supply network.
  • the construction according to the invention is in principle also suitable for other drive technologies, for example machines operated by compressed air.
  • the guide element is preferably a plate-like guide element, for example a so-called saw table.
  • An advantageous embodiment of the invention provides that the outer circumference of the cutting tool protrudes in the area of the guide element in front of the front miter bearing, so that next to or in front of the front miter bearing a penetration area of the cutting tool into the workpiece or an exit area of the cutting tool from the workpiece from the drive assembly , for example past a section of the machine housing, is visible.
  • the front miter bearing is advantageously arranged behind the outer circumference of the cutting tool in the working direction, so that its area of penetration into the workpiece or its area of exit from the workpiece is clearly visible. It is also possible that the machine housing or the drive assembly does not extend all the way in front of the outer circumference of the working tool or cutting tool, so that the penetration area or the exit area can be seen particularly favorably.
  • Measures are advantageously taken that the penetration area of the cutting tool into the workpiece or its exit area from the workpiece is clearly visible.
  • the guide element for example a saw table or some other guide plate
  • the guide element has a recess through which the penetration area or the exit area can be seen from above the guide element.
  • another component of the hand-held cutting machine arranged above the guide element for example the drive assembly, in particular the machine housing, can also have a cutout.
  • the support arm of a depth adjustment bearing which will be explained in detail later, has a recess through which the penetration area of the cutting tool into the workpiece or exit area is visible.
  • the rear miter bearing is close to the front miter bearing, i.e. is arranged for example in the working direction laterally next to the cutting tool.
  • the rear miter bearing can be arranged on a flat side of the cutting tool or next to a flat side of the cutting tool.
  • the distance between the miter bearings is as large as possible, which enables a particularly stable and, so to speak, broadly supported fixation of the drive assembly relative to the guide element. It is therefore advantageous in this case if the rear miter bearing is arranged in the working direction behind the outer circumference of the cutting tool.
  • the front miter bearing is advantageously as far away as possible from the rear miter bearing despite the arrangement behind the outer circumference or next to the outer circumference of the cutting tool. It is preferred if the front miter bearing is arranged next to a section of the cutting tool which is front in the working direction and which has at least 50% of the radial distance of the outer circumference of the cutting tool from the axis of rotation.
  • front miter bearing prefferably be arranged further back in the working direction, for example approximately in the middle between the outer circumference of the cutting tool and the axis of rotation or even in the rear section of the cutting tool close to the axis of rotation.
  • the drive assembly is mounted pivotably about the miter axis on bearing elements of the miter bearing arrangement with counter bearing sections protruding in front of an upper side of the guide element.
  • the bearing elements and / or the counter-bearing sections are preferably plate-like bodies or disk-like bodies.
  • the counter-bearing sections or bearing elements or both are preferably designed, for example, in the form of circular segment-like plates or bearing sections.
  • With the bearing elements it is advantageous if these have guide slots in which at least one slot follower of the counter-bearing section is guided.
  • a kind of bearing pin and bearing block, in which the bearing pin engages would of course also be possible as a miter bearing.
  • the drive assembly is mounted pivotably with respect to the miter bearing arrangement for setting a sawing depth or cutting depth of the cutting tool in the workpiece with respect to the guide element.
  • the already mentioned drive carrier which is pivotably mounted on the bearing elements of the guide element about the miter axis and forms the bearing base for the depth adjustment of the drive assembly relative to the guide element, is useful here, so that the drive motor and the tool holder can be pivoted to set a sawing depth or cutting depth on the drive carrier are mounted or are mounted pivotably and linearly displaceable.
  • the drive carrier has, for example, counter-bearing sections which are mounted pivotably about the miter axis on the bearing elements of the miter bearing arrangement protruding in front of the upper side of the guide element.
  • At least one bearing element of the guide element for example a disk-like or plate-like bearing body, penetrates a passage opening of the drive assembly, in particular of the drive carrier.
  • the bearing element can therefore protrude to an upper side of the drive carrier or the drive assembly.
  • a pocket or some other recess into which the bearing body or the bearing element of the guide element engages is also conceivable.
  • the bearing element that in the drive assembly, in particular engages the drive carrier it is preferably the bearing element of the front miter bearing in the working direction.
  • At least one bearing element is more compact than the other.
  • the front bearing element in the working direction i.e. the bearing element of the front miter bearing that protrudes from the guide element or the guide plate, protrudes less far in front of the top of the guide element than the rear or other bearing element in the working direction. This measure contributes to the fact that the front bearing element less obstructs the field of vision of the area of penetration of the cutting tool into the workpiece or the area of exit of the cutting tool from the workpiece.
  • the tool holder in particular the drive assembly as a whole, is movably supported with respect to the guide element by means of a depth adjustment bearing in a depth adjustment direction or cutting depth direction between an upper depth adjustment position and at least one, preferably several and / or continuously adjustable, lower depth adjustment position.
  • a depth adjustment bearing in a depth adjustment direction or cutting depth direction between an upper depth adjustment position and at least one, preferably several and / or continuously adjustable, lower depth adjustment position.
  • the alternatively possible swivel-slide bearing should be mentioned here again.
  • the depth adjustment bearing is preferably at the front in the working direction, that is to say in the area of the front miter bearing.
  • a pivot axis of the depth adjustment bearing is outside the longitudinal distance between the miter bearings, for example in the working direction in front of the front miter bearing.
  • the depth adjustment bearing is therefore arranged, for example, in front of the front miter bearing.
  • pivot axis is provided behind the rear miter bearing in the working direction, which is advantageous for so-called plunge circular saws, for example.
  • a penetration area of the cutting tool into the workpiece or the exit area of the cutting tool from the workpiece is provided between the pivot axis of the depth adjustment bearing and the front miter bearing. The operator can therefore look between the depth adjustment bearing and the front miter bearing, so to speak, in order to check the penetration area or the exit area of the cutting tool into the workpiece.
  • a particularly preferred embodiment of the invention provides that the depth adjustment bearing is arranged on a support arm which protrudes in front of the longitudinal distance between the miter bearings.
  • the support arm can protrude in the working direction to the rear in front of the rear miter bearing (structurally in the manner of a plunge circular saw) or in the working direction to the front in front of the front miter bearing, which is structurally advantageous for a pendulum hood saw, for example.
  • a pivot position of the drive assembly relative to the guide element with respect to the miter axis can preferably be fixed by means of fixing means.
  • fixing screws, clamping screws or the like can be provided on the bearing elements and counter-bearing sections. It is sufficient if one of the miter bearings can be fixed.
  • a construction with a force transmission arrangement which will be explained below, is particularly preferred.
  • actuating handle and the force transmission arrangement or a force transmission element are arranged on the drive assembly and pivot with it about the miter axis.
  • the fixing means swivel with the drive assembly about the miter axis, so to speak, so that fixing can always take place at the optimal location.
  • the fixing means are therefore designed to fix the drive assembly in at least one pivot position with respect to the miter axis.
  • the tool holder can preferably be driven by the drive motor about an axis of rotation that runs transversely to the working direction or longitudinal direction of the hand-held cutting machine, for example the guide element.
  • a flat side of the cutting tool can run or be arranged parallel to the longitudinal distance between the miter bearings.
  • the actuating handle expediently comprises a clamping screw or a clamping element. But it can also include a tensioning lever or actuating lever.
  • a hand knob or the like is preferably provided which can be easily grasped by an operator.
  • a plurality of, in particular continuously adjustable, pivoting positions in which the fixation is possible are preferred.
  • the fixing means include or are formed by clamping means or tensioning means.
  • the fixing means it is also possible for the fixing means to comprise latching means or a combination of latching means and clamping means.
  • a form-fitting fixation is possible by means of a latching.
  • the power transmission arrangement is expediently provided in an intermediate space between the guide element and the drive motor. It is possible that the force transmission arrangement, for example a pulling element or pushing element thereof, protrudes in front of the drive assembly, for example the drive motor.
  • the drive assembly has, on a side opposite the guide element, a recess for receiving the force transmission arrangement, for example a push element or tension element thereof.
  • the side with the recess is preferably a flat side in a a predetermined pivot position opposite a top or flat side of the guide element. It is preferred if this flat side can support the side of the drive assembly having the recess in an essentially flat manner or with flat sections.
  • This side of the drive assembly is therefore preferably flat on the flat side or top side of the guide element when the predetermined pivot position is, for example, a so-called zero degree position.
  • the cutting tool for example the saw blade, is preferably at right angles to the underside or guide side of the guide element.
  • a particularly preferred embodiment of the invention provides that one or more tapering or constrictions are provided on the drive train of the drive assembly, which includes the tool holder and the drive motor, and the power transmission arrangement with, for example, a pulling element or thrust element penetrates this waisting or constriction.
  • the pulling element or pushing element is preferably rod-shaped or comprises at least one rod-shaped section.
  • the force transmission arrangement and the actuating handle act in the fixing position in the sense of bracing and / or locking the counter-bearing sections with the bearing elements on the counter-bearing sections and / or the bearing elements.
  • This construction has the advantage that, so to speak, the bearing elements are braced or latched to the counter bearing sections. It is preferred here that, for example, one of the bearing elements is clamped in a sandwich-like manner between the actuating handle and a component of the force transmission arrangement, for example a push element or tension element.
  • a further advantageous constructive measure provides that at least one bearing element or at least one counter-bearing section has a play in a pulling direction or a pushing direction, so that the counter-bearing section or the bearing element through the actuating handle and / or the force transmission arrangement is deflectable in order to come into engagement and / or at least in contact with the opposing element of the bearing element or counter-bearing section in the sense of bracing or locking or both. It is preferred if the counter bearing sections of the drive assembly are sandwiched between the bearing elements and the force transmission arrangement and the actuating handle act on the bearing elements towards the counter bearing sections in the fixing position.
  • At least one of the bearing elements or counter-bearing sections is resilient, so that it moves automatically away from the opposite counter-bearing sections or bearing element without the aforementioned application of force by the force transmission arrangement and / or the actuating handle.
  • At least one of the bearing elements expediently has a guide link that runs in an arc around the miter axis.
  • a component of the fixing means for example the actuating handle or a component of the force transmission arrangement, in particular a tension element, has or forms a link follower guided in the guide link.
  • a head of a pulling element or pushing element can engage in the guide slot and be guided on it.
  • the guide link and the link follower thus guide the pivoting movement of the drive assembly around the miter axis and are at the same time components of the fixing means.
  • the counter bearing sections are expediently arranged on a drive carrier of the drive assembly, which is mounted on the bearing elements of the miter bearing arrangement so as to be pivotable about the miter axis.
  • the power transmission arrangement is preferably arranged on the drive carrier.
  • the drive carrier is preferably plate-like or has a plate-like section.
  • the drive motor and the tool holder are pivotably mounted on the drive carrier with at least one degree of freedom of movement.
  • a pivot bearing or a combination of a pivot bearing and a sliding bearing is provided in order to adjust the tool holder and thus also the drive motor in a depth setting direction, for example to set the cutting depth of the cutting tool in the tool.
  • One advantage of this construction is that the fixing means, so to speak, act on the drive carrier and the tool holder is additionally adjustable relative to the drive carrier.
  • the force transmission arrangement expediently has at least one pulling element or pushing element for the preferably linear transmission of force between the actuating handle and the miter bearing remote from the actuating handle, or is formed thereby.
  • the thrust force or the thrust element it is possible, for example, to press counter bearing sections in the direction of the bearing elements.
  • the pulling element it is possible to pull the bearing elements in the direction of the counter bearing sections.
  • the bearing elements are preferably resilient or at least elastic, so that they can be moved in the direction of the counter bearing sections and can thus be braced or locked. A simple pushing or pulling movement is enough to fix the two miter bearings.
  • the pushing element or pulling element is expediently designed as a link follower for a guide link provided on a bearing element of the miter bearing arrangement.
  • the pushing element or pulling element preferably has such a link follower.
  • the actuating handle for example a toggle screw or the like, can of course also form a link follower.
  • a screw or a screw arrangement is provided as a component of the force transmission arrangement.
  • the pulling element or pushing element is expediently held against rotation on the drive assembly.
  • the respective tension element or the thrust element has an anti-rotation section, for example a flat area or the like, which rests against a complementary anti-rotation section of the drive assembly so that it cannot rotate.
  • the pulling element or pushing element cannot be twisted.
  • the pulling element or pushing element is essentially rigid.
  • a Bowden cable is provided as a pulling element or pushing element.
  • push-bowden cables and pull-bowden cables are also possible as a power transmission arrangement, at least as part of it.
  • a hand cutting machine 10 has a drive assembly 11 which has a drive motor 12 for rotating a tool holder 13 about an axis of rotation D includes.
  • the drive motor 12 is arranged in a machine housing 35.
  • a cutting tool 14, for example a saw blade, a cutting disc or some other cutting tool, can be releasably attached to the tool holder 13.
  • bayonet connection means, screw connection means, in particular a retaining screw, or the like are provided for fastening the cutting tool 14 to the tool holder 13.
  • the hand cutting machine is therefore, for example, a saw or, more generally, a cutting machine.
  • the drive assembly 11 is provided with a handle 15 on which a switch 16 for switching on or switching off the drive motor 12 is arranged.
  • connection for an energy store 17, for example an Ackupack, is provided on the drive assembly 11 in order to supply the drive motor 12 or, more generally, the hand-held cutting machine 10 with electrical energy.
  • An energy supply with a network cable for connection to an electrical energy supply network is also easily possible, but not shown.
  • the cutting tool 14 is protected by an upper, fixed cover 18 and at the bottom by a movable cover 19 which can pivot into the area of the fixed cover 18.
  • the hand cut-off machine 10 is a pendulum hood saw, i. that the movable cover 19 can pivot towards or under the fixed cover 18 in order to expose the lower region of the saw blade or cutting tool 14 in the drawing for a saw cut or cutting cut.
  • a guide element 20 is provided on the underside of the drive assembly 11 and the machine housing 35.
  • the guide element 20 is plate-like and forms a guide plate 21.
  • the cutting tool 14 is provided on the right side 22 in the working direction A, while the energy store 17 is located in the area of a left side 23 and a rear side 25 of the guide element 20.
  • a front side 24 of the guide element 20 is at the front in the working direction A.
  • the drive assembly 11 and thus the machine housing 35 are thus arranged on the top 26 of the guide element 20, while the bottom of the Guide element 20 forms a guide surface 27.
  • a handle 28 is also provided on the top 26, with which the hand cutting machine 10 can be conveniently gripped and guided by an operator in addition to the handle 15.
  • the handle 28 is designed, for example, in the manner of a toggle, so that it can be comfortably grasped by an operator. The operator can press the handle 28 with the ball of his hand, for example.
  • the toggle is arranged, for example, on a columnar support which protrudes upwards in front of the top 26 of the guide plate 21 / of the guide element 20.
  • the hand-held cutting machine 10 is to be guided along the guide rail 90 in a working direction A, namely in the direction of a longitudinal axis L, in order to make cuts in a workpiece (not shown).
  • the cutting tool 14 can assume different positions relative to the guide rail 90: With the help of a miter bearing arrangement 30, bevel cuts can be made in the workpiece.
  • the drive assembly 11 and thus the machine housing 35 and the tool holder 13 can namely pivot, indicated by an arrow G, about a miter axis GA.
  • the miter bearing 30 is in two parts and comprises a front miter bearing 31 in the working direction and a rear miter bearing 32 in the working direction, which are arranged at a longitudinal distance from one another, in which the drive motor 12 and the tool holder 13 and therefore the essential components of the drive assembly 11 are located.
  • the guide plate 21 is designed to be guided along the guide rail 90.
  • a guide surface 27 on the underside of the guide plate 21 is provided for guiding on a guide surface 92 of a rail body 91 of the guide rail 90.
  • the guide surface 92 is located on the upper side of the guide rail 90, the lower side 95 of which is intended to be placed on a substrate, for example the workpiece to be machined.
  • a longitudinal guide projection 93 and / or a rear engagement projection 94 protrude in front of the guide surface 92 of the guide rail 90, which engage in a longitudinal guide receptacle 33 and a rear engagement receptacle 34 on the guide element 20 or are provided for engagement.
  • the longitudinal guide receptacle 33 is provided essentially for guidance along the working direction A, i.e. along a longitudinal axis L of the guide element 20 or the guide rail 90, and supports the guide element 20 in a transverse direction Q, for example at right angles, to the longitudinal axis L or the working direction A
  • the optional engagement protrusion 94 acts to hold the guide surfaces 27, 92 against one another, that is, holds the guide element 20 on the guide rail 90 in a depth direction T which is perpendicular to the longitudinal axis L and the transverse direction Q, respectively.
  • the advantage here is that the operator can take the guide rail 90 with him, for example for so-called chop cuts, by only gripping the manual cutting machine 10, so that at the same time he also takes the guide rail 90 and the overall configuration or the guide system 5 consisting of the manual cutting machine 10 and Guide rail 90 is placed back on the ground at the work site.
  • the tool holder 13 can be pivoted relative to the guide element 20 about a pivot axis SA, which is indicated by an arrow S in the drawing.
  • the depth of the cutting tool 14 can thus be adjusted relative to the guide rail 90, and consequently the penetration or cutting depth of the cutting tool 14 with respect to the depth direction T into the workpiece can also be adjusted.
  • Plate-like bearing elements 37, 38 of the front and rear miter bearings 31, 32 protrude in front of the upper side 26 of the guide element 20.
  • the bearing elements 37, 38 have a shape like a segment of a circle.
  • the bearing elements 37, 38 are, for example, integral with the body of the guide element 20 or, as in the exemplary embodiment, separate components therefrom.
  • the bearing elements 37, 38 are expediently made of plastic and thus have a certain flexibility or elasticity relative to the guide element 20. This is of particular importance with a view to fixing the drive assembly 11 with respect to the guide element 20, which will be explained later.
  • the bearing elements 37, 38 are screwed to the guide element 20 using screws 39, for example.
  • Counter-bearing sections 41, 42 of a drive carrier 40 are pivotably mounted on the bearing elements 37, 38.
  • the bearing elements 37, 38 together with the counter bearing sections 41, 42 form the miter bearings 31, 32 or components thereof.
  • the drive carrier 40 has a plate-like base body 43, on the rear longitudinal end area of which the counter-bearing section 42 is formed.
  • An arm 44, which at least partially covers the cutting tool 14, projects upward from the base body 43.
  • a passage opening 45 is provided in front of the counter bearing section 41 in the working direction A, through which the bearing element 37 protrudes upward in front of the upper side of the drive carrier 40.
  • a support arm 46 extends, on the front, free end region of which the depth-adjustment bearing 36 is provided.
  • bearing projections 47 protrude coaxially with the pivot axis SA and engage in corresponding bearing receptacles of a support arm 48 protruding in front of the machine housing 35 and firmly connected to the machine housing 35 and thus also to the drive motor 12 and the tool holder 13.
  • the machine housing 35 and thus also the tool holder 13 can pivot about a pivot axis of the SA running very far forward, namely on the front side 24 of the guide element 20, transversely to the working direction A.
  • the position of the front miter bearing 31 with respect to the drive assembly 11 and in particular the axis of rotation D of the tool holder 13 is particularly favorable for handling the hand-held cutting machine 10.
  • the front is the depth adjustment bearing 36 and further back is the front miter bearing 31.
  • the front miter bearing 31 is close to the axis of rotation D of the tool holder 13 or of the cutting tool 14, at least behind an outer circumference 49 of the cutting tool 14.
  • an exit region 50 of the cutting tool 14 from the workpiece is not covered by the miter bearing 31.
  • a recess 51 is provided on the support arm 46 and a further recess 52 is provided on the guide element 20, which can be easily seen by an operator at least in a lower pivot end position when the drive carrier 40 is pivoted completely to the guide element 20 .
  • Another recess 53 is provided at the front end area of the fixed cover 18, that is to say close to the depth adjustment bearing 36, through which the exit area 50 is also visible.
  • the operator can therefore see the exit area 50 through the recesses 51, 52, 53 and thus the saw cut or severing cut very precisely if he looks obliquely from above, for example from the handle 28 or actuating element 29, in the direction of the exit area 50 of the cutting tool 14 in the workpiece.
  • the fixing means 55 namely furthermore comprise a force transmission arrangement 57 which extends between the miter bearings 31, 32.
  • the force transmission arrangement 57 comprises a tension element 58 which has an abutment head 60 serving as a link follower 59 at its end region assigned to the bearing element 37.
  • the link follower 59 engages in a guide link 61 of the bearing element 37.
  • the guide slot 61 like optionally available guide receptacles or guide projections, for example guide grooves or guide ribs, extends in the shape of a circular arc around the miter axis GA.
  • the guide slot 61 is provided on an end face 62 of the bearing element 37 facing the counter bearing section 41.
  • the link follower 59 protrudes forwards in front of a bearing side of the counter bearing section 41 which is opposite the end face 62.
  • the link follower 59 is mushroom-shaped and, in its capacity as an abutment head 60, engages behind abutment contours 63 which protrude inward towards the guide link 61.
  • the bearing element 37 can be pulled and tensioned by the tension element 58 in a tension direction Z1 in the direction of the counter bearing section 41 by applying a force.
  • the tension element 58 has a further link follower 64 which penetrates a guide link 65 on the bearing element 38.
  • the link follower 64 is formed by a bolt section 66 of a tensioning screw 67, on the head 68 of which the actuating handle 56 is arranged, so that, using the actuating handle 56, the tensioning screw 67 can be screwed into or unscrewed from a threaded receptacle 69 on the tension element 58.
  • the head 68 is supported on a side 70 of the bearing element 38 facing away from the counter bearing section 42, preferably via a washer 71.
  • the pulling element 58 pulls the bearing element 37 towards the counter-bearing section 41 in the pulling direction Z1 and the bearing element 38 towards the counter-bearing section 42 in the direction of pull Z2, i.e. opposite.
  • the tension element 58 tensions the two bearing elements 37, 38 towards one another in one sense (indicated by arrows F in Figure 5 ), so that they take the counter-bearing sections 41, 42, so to speak, in the pliers, so that the drive carrier 40 is clamped between the two bearing elements 37, 38 and is thus fixed in place on the guide element 20 with respect to the miter axis GA.
  • the fixing means 55 can be operated by actuating the single actuating handle 56, which is preferably provided on the rear, free one in the area of the hand cutting machine 10. It is therefore also not a problem that the front miter bearing 31 is relatively difficult to access for such operator interventions.
  • the resilient property of the bearing elements 37, 38 ensures that they move away from the miter bearing sections 41, 42 in one sense, so that the drive carrier 40 is pivotable relative to the guide element 20 with respect to the miter axis GA. Is in Figure 5 indicated by arrows U.
  • the power transmission arrangement 57 is arranged on the drive assembly 11. Thus it makes the pivoting movement of the drive assembly 11 about the miter axis GA.
  • the tension element 58 is preferably rod-shaped.
  • the drive assembly 11 e.g. Drive carrier 40
  • a receptacle 72 in the form of a recess is provided in which the tension element 58 is received.
  • the tension element 58 and the receptacle 72 expediently have several sections which are angled to one another.
  • the contour of the receptacle 72 is advantageously adapted to the tension element 58.
  • a completely or essentially straight pulling element is provided.
  • the receptacle 72 has a section 73 for receiving a threaded sleeve 74, which has the threaded receptacle 69, in a rotationally secure manner.
  • the section 75 and the rod section 76 run obliquely away from the actuating handle 56 in the direction of the underside 54 of the drive carrier 40.
  • the section 75 is followed by a section 78 of the receptacle 72 which has contours 77 to prevent rotation and in which a rod section 79 of the tension element 58 is held in a torsion-proof manner.
  • the rod section 79 like the section 78, is polygonal, for example approximately flat and rectangular in cross section, so that the rod section 79 cannot rotate in the section 78 of the recess or receptacle 72. Since the remaining sections of the tension element 58 cannot be twisted either, the tension element 58 as a whole cannot rotate in the receptacle 72.
  • the abutment head 60 is arranged at a free end of an end section 80 which adjoins the rod section 79 and is received in a section 81 of the receptacle 72.
  • the pulling element 58 has a longitudinal play in the receptacle 72 with respect to the pulling directions Z1, Z2.
  • the section 78 which, so to speak, represents a waist of the receptacle 72, is shorter than the rod section 79 in relation to the longitudinal axis L, in which the pulling directions Z1 and Z2 run, so that it protrudes into the sections 75 and 81 with a larger cross section .
  • a scale 82, to which an index 83 of the drive assembly 11 points, is preferably arranged on one or both of the bearing elements 37, 38.

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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)

Claims (14)

  1. Machine de coupe portative, en particulier scie électrique portative ou fraise pour saignées murales, avec un élément de guidage (20) pouvant être placé avec son côté inférieur sur un support, en particulier une plaque de guidage (21), et un module d'entraînement (11), qui présente un moteur d'entraînement (12) disposé dans un carter de machine (35) et un logement d'outil (13), pouvant être entraîné par le moteur d'entraînement (12) autour d'un axe de rotation (D), pour un outil de coupe (14), en particulier une lame de scie, qui peut être guidé dans une direction de travail (A) pour produire une découpe dans la pièce, dans laquelle le module d'entraînement (11) est monté au niveau de l'élément de guidage (20) de manière à pouvoir pivoter autour d'un axe à onglet (GA) parallèle par rapport à la direction de travail (A) à l'aide d'un ensemble de paliers à onglet (30), qui comprend un palier à onglet avant (31) dans la direction de travail (A) et un palier à onglet arrière (32) dans la direction de travail (A) à une distance longitudinale par rapport au palier à onglet avant (31), au niveau desquels le module d'entraînement (11) est monté de manière à pouvoir pivoter autour de l'axe d'onglet (GA), dans lequel le palier à onglet avant (31) est disposé entre l'axe de rotation (D) du logement d'outil (13) et une périphérie extérieure (49) de l'outil de coupe (14), caractérisée en ce que le logement d'outil (13) est monté de manière mobile par rapport à l'élément de guidage (20) à l'aide d'un palier de réglage de profondeur (36) dans une direction de réglage de profondeur ou une direction de profondeur de découpe entre une position de réglage de profondeur supérieure et au moins une position de réglage de profondeur inférieure, dans laquelle un axe de pivotement (SA) du palier de réglage de profondeur (36) est disposé à l'extérieur de la distance longitudinale entre les paliers à onglet (31, 32).
  2. Machine de coupe portative selon la revendication 1, caractérisée en ce que la périphérie extérieure (49) de l'outil de coupe (14) fait saillie dans la zone de l'élément de guidage (20) devant le palier à onglet avant (31) de sorte qu'une zone de sortie (50) de l'outil de coupe (14) hors de la pièce ou de la zone de pénétration de l'outil de coupe (14) dans la pièce est visible depuis le module d'entraînement (11) à côté ou devant le palier à onglet avant (31).
  3. Machine de coupe portative selon la revendication 1 ou 2, caractérisée en ce que l'élément de guidage (20) et/ou au moins un composant, disposé au-dessus de l'élément de guidage (20), de la machine de coupe portative (10) présentent en particulier le module d'entraînement (11) ou un bras porteur (46) d'un palier de réglage de profondeur (36), un évidement (51, 52, 53), par lequel la zone de sortie (50) ou la zone de pénétration de l'outil de coupe est visible depuis la zone au-dessus de l'élément de guidage (20).
  4. Machine de coupe portative selon l'une quelconque des revendications précédentes, caractérisée en ce que le palier à onglet arrière (32) est disposé dans la direction de travail (A) derrière la périphérie extérieure (49) de l'outil de coupe (14) ou à côté de l'outil de coupe (14).
  5. Machine de coupe portative selon l'une quelconque des revendications précédentes, caractérisée en ce que le palier à onglet avant (31) est disposé à côté d'une section avant dans la direction de travail (A) de l'outil de coupe (14), qui présente au moins 50 % de la distance radiale de la périphérie extérieure (49) de l'outil de coupe (14) par rapport à l'axe de rotation (D).
  6. Machine de coupe portative selon l'une quelconque des revendications précédentes, caractérisée en ce que le module d'entraînement (11) présente un support d'entraînement (40), au niveau duquel le moteur d'entraînement (12) et le logement d'outil (13) sont montés de manière à pouvoir pivoter et qui est monté de manière à pouvoir pivoter autour de l'axe d'onglet (GA) avec des sections de contre-palier (41, 42) au niveau d'éléments de palier (37, 38), faisant saillie devant un côté supérieur de l'élément de guidage (20), de l'ensemble de paliers à onglet (30).
  7. Machine de coupe portative selon l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins un élément de palier (37, 38), en particulier du palier à onglet avant (31) dans la direction de travail (A), traverse une ouverture de passage (45) du module d'entraînement (11), en particulier du support d'entraînement (40).
  8. Machine de coupe portative selon l'une quelconque des revendications précédentes, caractérisée en ce qu'un élément de palier (37, 38), en particulier du palier à onglet avant (31) dans la direction de travail (A) fait saillie moins loin devant le côté supérieur de l'élément de guidage (20) que l'autre élément de palier (37, 38).
  9. Machine de coupe portative selon l'une quelconque des revendications précédentes, caractérisée en ce que le module d'entraînement (11) est monté de manière mobile par rapport à l'élément de guidage (20) à l'aide du palier de réglage de profondeur (36), en particulier d'un palier de pivotement, entre la position de réglage de profondeur supérieure et l'au moins une position de réglage de profondeur inférieure.
  10. Machine de coupe portative selon l'une quelconque des revendications précédentes, caractérisée en ce que l'axe de pivotement (SA) du palier de réglage de profondeur est disposé dans la direction de travail (A) devant le palier à onglet avant (31).
  11. Machine de coupe portative selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une zone de sortie (50) de l'outil de coupe hors de la pièce ou une zone de pénétration de l'outil de coupe (14) dans la pièce est prévue entre l'axe de pivotement (SA) du palier de réglage de profondeur (36) et le palier à onglet avant (31).
  12. Machine de coupe portative selon l'une quelconque des revendications précédentes, caractérisée en ce que le palier de réglage en profondeur (36) est disposé au niveau d'un bras porteur (46), qui fait saillie devant la distance longitudinale entre les paliers à onglet (31, 32), en particulier devant le palier à onglet avant (31) dans la direction de travail (A).
  13. Machine de coupe portative selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ensemble de paliers à onglet (30) présente des moyens de fixation (55), qui peuvent être ajustés par au moins une manette d'actionnement (56) disposée au niveau d'un des paliers à onglet entre une position de fixation, dans laquelle le module d'entraînement (11) est fixé de manière stationnaire par rapport à l'axe d'onglet (GA) au niveau de l'élément de guidage (20), et une position de déblocage, dans laquelle le carter de machine (35) peut être pivoté par rapport à l'élément de guidage (20) autour de l'axe d'onglet (GA).
  14. Machine de coupe portative selon la revendication 13, caractérisée en ce que la manette d'actionnement (56) est disposée au niveau d'un palier à onglet et un ensemble de transmission de force (57) est prévu entre les paliers à onglet aux fins de la transmission de la force de la manette d'actionnement (56) sur l'autre palier à onglet (31), et que la manette d'actionnement (56) et l'ensemble de transmission de force (57), en particulier un élément de transmission de force, sont disposés au niveau du module d'entraînement (11) et pivotent avec celui-ci autour de l'axe d'onglet (GA).
EP15175617.8A 2014-07-15 2015-07-07 Machine de coupe manuelle ayant deux paliers de guidage à onglet Active EP2974839B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014010487.7A DE102014010487A1 (de) 2014-07-15 2014-07-15 Hand-Trennmaschine mit zwei Gehrungslagern

Publications (2)

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EP2974839A1 EP2974839A1 (fr) 2016-01-20
EP2974839B1 true EP2974839B1 (fr) 2020-08-26

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EP (1) EP2974839B1 (fr)
DE (1) DE102014010487A1 (fr)
DK (1) DK2974839T3 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017202197A1 (de) * 2017-02-13 2018-08-16 Robert Bosch Gmbh Tragbare Werkzeugmaschine
DE102017118331A1 (de) * 2017-08-11 2019-02-14 Festool Gmbh Führungssystem

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Publication number Priority date Publication date Assignee Title
DE3615848C3 (de) * 1986-05-10 1994-05-11 Festo Kg Für Trennarbeiten verwendbare Handwerkzeugmaschine wie Handkreissäge, Trennschleifgerät od. dgl.
DE19844807A1 (de) * 1998-09-30 2000-04-13 Bosch Gmbh Robert Motorgetriebene Handwerkzeugmaschine für Trennarbeiten, insbesondere Handkreissäge

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Also Published As

Publication number Publication date
DK2974839T3 (da) 2020-10-19
DE102014010487A1 (de) 2016-01-21
EP2974839A1 (fr) 2016-01-20

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