EP0167112B1 - Process and apparatus for milling and grooving wooden-frame parts - Google Patents

Process and apparatus for milling and grooving wooden-frame parts Download PDF

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Publication number
EP0167112B1
EP0167112B1 EP85107968A EP85107968A EP0167112B1 EP 0167112 B1 EP0167112 B1 EP 0167112B1 EP 85107968 A EP85107968 A EP 85107968A EP 85107968 A EP85107968 A EP 85107968A EP 0167112 B1 EP0167112 B1 EP 0167112B1
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EP
European Patent Office
Prior art keywords
workpiece
milling
tool
clamping device
bevels
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EP85107968A
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German (de)
French (fr)
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EP0167112A1 (en
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Ludolf Stegherr
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Individual
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Individual
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Priority to AT85107968T priority Critical patent/ATE37819T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F1/00—Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints

Definitions

  • the invention relates to a method and an apparatus for milling mitres arranged symmetrically to the central axis of a rung frame part and a plating connecting the miters to one another.
  • DE-PS 869 555 discloses a device and a method for milling mitres arranged symmetrically to the central axis of a rung frame part and a plating connecting the miters to one another.
  • finger mills are provided on two perpendicular, mutually associated spindles for milling the mitres in the rung frame part (workpiece), with the aid of which a miter is simultaneously milled from above and below into a rung that is clamped on a main slide and movable relative to the tool.
  • the workpiece is then unclamped and clamped on an additional slide arranged at another point on the machine housing, which moves the workpiece against a end mill that mills the central groove.
  • the object of the invention is to provide a method and an apparatus for mitering and simultaneously plating on rung frame parts and the like.
  • the miter is milled on one side on the workpiece to be milled in a clamping device by the milling tool being moved horizontally in one direction over the workpiece and transversely to the workpiece, the workpiece in the clamping device is pivoted through 180 °, during this pivoting of the workpiece through the working area of a grooving tool, a cylinder jacket-shaped plating is automatically milled, the milling unit is moved back in the opposite direction to the starting position and the other miter is milled into the second workpiece side, and then that Workpiece is swung back into the starting position and relaxed.
  • a device which is characterized by a guide device connected to the machine stand for receiving a milling cutter tool, which for milling the miter is horizontally displaceable and adjustable in height along the device, one connected to the frame and the workpiece underneath Workpiece holding device holding the clamping pressure, in which the workpiece can be positioned on the tools and which can be pivoted through 180 ° about its central axis, in such a way that the upper edge of the workpiece assumes the same height relative to the milling tool in both swivel positions, and a holding device arranged in the frame for a grooving tool with drive, which is arranged below the workpiece so that the grooving tool comes into engagement with the workpiece when pivoting the workpiece receiving device in order to mill the plating between the two tongues.
  • the two opposite miters and the cladding in between can be milled without unclamping or reclamping in that the milling cutter tool is displaced relative to the workpiece.
  • the operation includes a forward and a backward movement, at the end of the forward movement the workpiece with the receiving device is pivoted through 180 ° about the central axis of the workpiece, so that the miter milled during the forward movement with respect to the workpiece is identical to that in the Backward movement of the milling tool milled miter on the opposite side of the workpiece.
  • the height of the milling tool can be adjusted so that mitres of different depths or workpieces of different thicknesses can be milled.
  • This height adjustment is preferably carried out manually by adjusting a screw spindle, but can also be carried out in any other way.
  • a lock is also expediently provided, in which the selected height setting of the milling tool is locked.
  • the milling tool can be moved horizontally across the workpiece.
  • the grooving tool is adjustable in height as well as laterally, the latter in order to be able to make side corrections from z. B. when sharpening the tools occurring differences from nut to milling tool.
  • the present invention proposes to provide a correction setting between the milling tool and the grooving tool in that the grooving tool is arranged to be adjustable relative to the milling tool.
  • the milling tool is shown with 1 or 1 '.
  • the milling cutter 2 is fastened with its shaft 3 to a holding head 4.
  • Shank 3 with milling cutter 2 are driven by a drive motor 3.
  • the holder 4 of the shaft is fastened in a tool guide 6 and can be displaced in the direction of the arrow 7 relative to a workpiece holder 8 which holds the workpiece 9, e.g. a rung frame bar, with a T-shaped cross-section.
  • the workpiece 9 has legs 10 and 11 into which the milling cutter mills the mitres 12, 13.
  • the workpiece 9 is positioned in a clamping device 14, 15.
  • a clamping pressure is exerted against the clamping device via a clamping device 16 in order to block the workpiece on the clamping device 14, 15.
  • the workpiece holder 8 is then pivoted about an axis of rotation 17 in a circular line 18.
  • the workpiece 9 comes into engagement with a nuting unit 19, the nuting tool 20 of which milled a plating 21 into the workpiece 9.
  • the groove unit 19 is arranged in a height-adjustable manner in the frame configuration of the overall device.
  • the operation of the device according to the invention is as follows:
  • the milling tool 1 is shifted to the right in the direction of arrow 7 in the schematic illustration according to FIG. 1 and mills a miter 12 into the workpiece 9 during this movement.
  • This movement process is indicated at 1 ' completed.
  • the workpiece holder 8 with the workpiece 9 is then pivoted about the axis of rotation 17 along the line 18 by 180 °. With a partial pivoting by 90 °, the workpiece 9 in the workpiece holder 8 engages with the grooving tool 20, which mills a plate 21 in the workpiece. Then the workpiece 9 is pivoted further with the workpiece holder into the position 8 'and thus assumes a position pivoted by 180 ° with respect to the starting position.
  • the milling cutter 1 In this position of the workpiece 9, the milling cutter 1 is shifted from the position 1 'from right to left in the drawing, the milling cutter 2 seizing the second miter 13 and the milling cutter 1 finally assuming the starting position on the left in the drawing. This completes one working cycle of the device.
  • the finished workpiece 9 provided with the two opposing miters 12, 13 and the plating 21 is shown in FIG. 2 shown in perspective view.
  • the structure of the device according to the invention is shown in more detail in FIGS. 3, 4 and 5.
  • the machine frame 22 of the device consists of a lower part 23, which receives the grooving unit 19, and an upper part 24, which receives the milling tool 1 and the workpiece holder 8 with a piece 9, in the lower part 23 is the grooving unit 19, which includes the grooving drive, in fixed a frame part 25 which is suspended from an intermediate floor 26 on the machine frame.
  • the height adjustment of the nut unit 19 is carried out by means of height adjustment devices 27, 27.
  • the height adjustment of the nut tool 20 or the nut unit 19 can, however, be carried out in any other manner. Irrespective of and in addition to the height adjustment, the grooving tool can be adjusted to a small extent laterally in order to carry out a correction movement in the assignment to the milling cutter tool, as indicated by arrow 28.
  • the lower part 23 and the upper part 24 of the device consist of vertical and horizontal supports which are closed to form a frame and are enclosed by a housing 29 which is open laterally and at the front in the region of the upper part 23.
  • Carriers 30, 31 are fixed on the upper side of the upper part 24 and receive the bearing blocks 32, 33 for guide rods 34, 35, on which a carrier plate 36, which receives the milling cutter tool 1, can be displaced in the direction of the arrow 39 (FIG. 3).
  • a handle 37 on the milling tool 1 the milling tool with milling cutter 2 is moved by the operator via the total depth 1 -1 'of the device.
  • a height adjustment device 38 is attached, the z. B.
  • the workpiece holder 8 with the workpiece 9 is fastened on the frame or on the housing 29 so as to be adjustable in height about an axis 17.
  • Cylindrical rotary members 44, 45 are mounted on pins 42, 43 fixed to the housing, with the outer ends of which actuating levers 46, 47 are fastened and to which the workpiece holding device 8 is connected. With the aid of the actuating levers 46, 47, the workpiece holding device 8 with the workpiece 9 is rotated along the dash-dotted line 18 in FIG. 1.
  • Both rotary members 44, 45 are of identical design and each take up a receiving plate 48 which is fixedly connected to the rotary member in question.
  • the vertical mounting plate 48 has a horizontal leg 49 through which a bolt 50 is guided, the z. B. is provided with a screw thread, with which height adjustment is connected in the thread adjusting wheel 51.
  • the bolt 50 is connected to a horizontal support plate 52, which receives a second, movable receiving plate 53.
  • the workpiece 9 is arranged between the two mounting plates 48 and 53.
  • 54 designates a slide acting against the receiving plate 53, which is guided in a guide member 55 which is connected to the carrier plate 52 via a flange 56.
  • a lever arm 57 is fastened, which is articulated to an intermediate lever 58 articulated on the slide 54, such that when the lever 57 is actuated about the pivot point 59, the slide 54 is pressed against the movable mounting plate 53 is and thus the workpiece 9 is fixed between the mounting plate 48 and 53 by clamping pressure.
  • the workpieces can optionally also be clamped pneumatically, namely via pressure cylinders.
  • the workpiece holder plates 48 and 53 are cut out and divided according to the shape of the milling cutter 2 and at 62 according to the shape of the grooving tool 20, they represent a splinter guard.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Milling Processes (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Door And Window Frames Mounted To Openings (AREA)

Abstract

A method and an apparatus are disclosed for cutting pairs of symmetrical bevels on opposite sides of halving joints used for windows, doors, and the like, and a groove-like recess on a third side of the workpiece. The first pair of bevels is cut on one side of the clamped workpiece by moving the cutting tool in a horizontal direction over and across the workpiece; then, the workpiece fastened within the clamping device is turned 180 DEG over the operation path of the grooving tool, which cuts the recess automatically during this turning operation. Subsequently, the tool is moved in the opposite direction into the starting position as it cuts the pair of bevels into the second, opposite side of the workpiece, and finally the workpiece is turned back into the starting position.

Description

Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum Fräsen von symmetrisch zur Mittelachse eines Sprossenrahmenteiles angeordneten Gehrungen und einer die Gehrungen miteinander verbindenden Plattung.The invention relates to a method and an apparatus for milling mitres arranged symmetrically to the central axis of a rung frame part and a plating connecting the miters to one another.

Aus der DE-PS 869 555 ist eine Vorrichtung und ein Verfahren zum Fräsen von symmetrisch zur Mittelachse eines Sprossenrahmenteiles angeordneten Gehrungen und einer die Gehrungen miteinander verbindenden Plattung bekannt. Hierbei sind auf zwei lotrecht stehenden, einander zugeordneten Spindeln befestigte Fingerfräser für das Fräsen der Gehrungen im Sprossenrahmenteil (Werkstück) vorgesehen, mit deren Hilfe in eine auf einem Hauptschlitten festgespannte und relativ zum Werkzeug bewegliche Sprosse von oben und von unten gleichzeitig eine Gehrung gefräst wird. Das Werkstück wird dann ausgespannt und auf einem an anderer Stelle des Maschinengehäuses angeordneten Zusätzschlitten festgespannt, der das Werkstück gegen einen die Mittelnut fräsenden Fingerfräser bewegt. Das Entspannen, Umsetzen und erneute Einspannen des Werkstückes in eine getrennte Spannvorrichtung führt zu erheblichen Ungenauigkeiten in der Bearbeitung, da das Werkstück nach dem Entspannen, Umsetzen und Wedereinspannen nicht mehr die gleiche Position einnimmt wie ursprünglich, so daß nicht sichergestellt ist, daß die beiden Gehrungen und die gut einwandfrei aufeinander ausgerichtet gefräst werden, und damit die erforderliche hohe Paßgenauigkeit der Sprossenrahmenteile verlorengeht. Derartige Ungenauigkeiten können nur dadurch verringert werden, daß das Umspannen des Werkstückes so exakt wie möglich vorgenommen wird, was einen erheblichen Zeitaufwand und außergewöhnliche Sorgfalt erforderlich macht, die Gefahr auftretender Ungenauigkeiten jedoch nicht beseitigt.DE-PS 869 555 discloses a device and a method for milling mitres arranged symmetrically to the central axis of a rung frame part and a plating connecting the miters to one another. In this case, finger mills are provided on two perpendicular, mutually associated spindles for milling the mitres in the rung frame part (workpiece), with the aid of which a miter is simultaneously milled from above and below into a rung that is clamped on a main slide and movable relative to the tool. The workpiece is then unclamped and clamped on an additional slide arranged at another point on the machine housing, which moves the workpiece against a end mill that mills the central groove. Relaxing, relocating and reclamping the workpiece in a separate clamping device leads to considerable inaccuracies in the machining, since the workpiece no longer assumes the same position after unclamping, relocating and unclamping, so that it is not ensured that the two miters and which are milled in a perfectly aligned manner with one another, and thus the required high accuracy of fit of the rung frame parts is lost. Such inaccuracies can only be reduced by reclamping the workpiece as precisely as possible, which requires a considerable amount of time and extraordinary care, but does not eliminate the danger of inaccuracies.

Aufgabe der Erfindung ist es demgegenüber, ein Verfahren und eine Vorrichtung anzugeben, um an Sprossenrahmenteilen und dergl. Werkstücken auf wirtschaftliche Weise mit nur einem einzigen Fräserwerkzeug und einem Nuterwerkzeug von zwei entegengesetzten Seiten her Gehrungen und gleichzeitig eine Plattung zu fräsen, ohne daß das zu bearbeitende Werkstück umgespannt werden muß, und die Fräsungen der beiden Gehrungen und der Plattung in einem Arbeitsspiel vorzunehmen.In contrast, the object of the invention is to provide a method and an apparatus for mitering and simultaneously plating on rung frame parts and the like. Workpieces economically with only a single milling cutter tool and a grooving tool from two opposite sides, without the work to be machined Workpiece must be reclamped, and the milling of the two miters and the plating carried out in one work cycle.

Diese Aufgabe wird mit dem Verfahren nach der Erfindung dadurch gelöst, daß an dem in einer Aufspannvorrichtung festgespannten, zu fräsenden Werkstück einseitig die eine Gehrung gefräst wird, indem das Fräserwerkzeug in einer Richtung waagerecht über das Werkstück und quer zum Werkstück verschoben wird, das Werkstück in der Aufspannvorrichtung um 180° geschwenkt wird, bei dieser Schwenkung des Werkstückes durch den Arbeitsbereich eines Nuterwerkzeuges selbsttätig eine Zylindermantelförmige Plattung gefräst wird, das Fräseraggregat in entgegengesetzter Richtung in die Ausgangsstellung zurückbewegt wird und dabei die andere Gehrung in die zweite Werkstückseite gefräst wird, und anschließend das Werkstück in die Ausgangslage zurückgeschwenkt und entspannt wird.This object is achieved with the method according to the invention in that the miter is milled on one side on the workpiece to be milled in a clamping device by the milling tool being moved horizontally in one direction over the workpiece and transversely to the workpiece, the workpiece in the clamping device is pivoted through 180 °, during this pivoting of the workpiece through the working area of a grooving tool, a cylinder jacket-shaped plating is automatically milled, the milling unit is moved back in the opposite direction to the starting position and the other miter is milled into the second workpiece side, and then that Workpiece is swung back into the starting position and relaxed.

Zur Durchführung dieses Verfahrens wird eine Vorrichtung vorgeschlagen, die gekennzeichnet ist durch eine mit dem Maschinenständer verbundene Führungsvorrichtung zum Aufnehmen eines Fräserwerkzeuges, das zum Fräsen der Gehrungen waagerecht längs der Vorrichtung verschiebbar und in der Höhe verstellbar ist, eine mit dem Rahmen verbundene und das Werkstück unter Spanndruck haltende Werkstückaufnahmevorrichtung, in der das Werkstück auf die Werkzeuge positionierbar ist und die um 180° um ihre Mittelachse verschwenkbar ist, derart, daß in beiden Schwenkpositionen die Überkante des Werkstückes die gleiche Höhenlage zum Fräserwerkzeug einnimmt, und eine im Rahmen angeordnete Aufnahmevorrichtung für ein Nuterwerkzeug mit Antrieb, das unterhalb des Werkstückes so angeordnet ist, daß das Nuterwerkzeug beim Verschwenken der Werkstückaufnahmevorrichtung mit dem Werkstück in Eingriff kommt, um die Plattung zwischen den beiden Gerungen zu fräsen.To carry out this method, a device is proposed which is characterized by a guide device connected to the machine stand for receiving a milling cutter tool, which for milling the miter is horizontally displaceable and adjustable in height along the device, one connected to the frame and the workpiece underneath Workpiece holding device holding the clamping pressure, in which the workpiece can be positioned on the tools and which can be pivoted through 180 ° about its central axis, in such a way that the upper edge of the workpiece assumes the same height relative to the milling tool in both swivel positions, and a holding device arranged in the frame for a grooving tool with drive, which is arranged below the workpiece so that the grooving tool comes into engagement with the workpiece when pivoting the workpiece receiving device in order to mill the plating between the two tongues.

Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Further embodiments of the invention are the subject of the dependent claims.

Mit dem erfindungsgemäßen Vorschlag wird erreicht, daß die beiden entgegengesetzten Gehrungen und die Plattung dazwischen ohne Ausspannen bzw. Umspannen in einem Arbeitsgang gefräst werden können, indem das Fräserwerkzeug relativ zum Werkstück verschoben wird. Der Arbeitsgang umfaßt dabei eine Vorwärts- und eine Rückwärtsbewegung, wobei am Ende der Vorwärtsbewegung das Werkstück mit der Aufnahmevorrichtung um 180° um die Mittelachse des Werkstückes geschwenkt wird, so daß die bei der Vorwärtsbewegung gefräste Gehrung in bezug auf das Werkstück identisch mit der bei der Rückwärtsbewegung des Fräserwerkzeuges gefrästen Gehrung auf der entgegengesetzten Seite des Werkstückes gefräst wird.With the proposal according to the invention it is achieved that the two opposite miters and the cladding in between can be milled without unclamping or reclamping in that the milling cutter tool is displaced relative to the workpiece. The operation includes a forward and a backward movement, at the end of the forward movement the workpiece with the receiving device is pivoted through 180 ° about the central axis of the workpiece, so that the miter milled during the forward movement with respect to the workpiece is identical to that in the Backward movement of the milling tool milled miter on the opposite side of the workpiece.

Das Fräserwerkzeug ist in der Höhe verstellbar, um Gehrungen unterschiedlicher Tiefe bzw. Werkstücke unterschiedlicher Dicke fräsen zu können. Diese Höhenverstellung erfolgt vorzugsweise von Hand durch Verstellen einer Schraubspindel, kann jedoch auch in beliebiger anderer Weise vorgenommen werden. Zweckmäßigerweise ist zusätzlich eine Verriegelung vorgesehen, in der die gewählte Höheneinstellung des Fräserwerkzeuges arretiert wird. Des weiteren ist das Fräserwerkzeug waagerecht quer zum Werkstück verschiebbar. Des Nuterwerkzeug ist sowohl in der Höhe als auch seitlich verstellbar, letzteres, um Seitenkorrekturen vornehmen zu können, die sich aus z. B. beim Schärfen der Werkzeuge auftretenden Differenzen von Nuter- zum Fräserwerkzeug ergeben.The height of the milling tool can be adjusted so that mitres of different depths or workpieces of different thicknesses can be milled. This height adjustment is preferably carried out manually by adjusting a screw spindle, but can also be carried out in any other way. A lock is also expediently provided, in which the selected height setting of the milling tool is locked. Furthermore, the milling tool can be moved horizontally across the workpiece. The grooving tool is adjustable in height as well as laterally, the latter in order to be able to make side corrections from z. B. when sharpening the tools occurring differences from nut to milling tool.

Des weiteren wird mit vorliegender Erfindung vorgeschlagen, eine Korrektureinstellung zwischen Fräserwerkzeug und Nuterwerkzeug dadurch vorzusehen, daß das Nuterwerkzeug relativ zum Fräserwerkzeug verstellbar angeordnet ist.Furthermore, the present invention proposes to provide a correction setting between the milling tool and the grooving tool in that the grooving tool is arranged to be adjustable relative to the milling tool.

Mit dem erfindungsgemäßen Verfahren bzw. der erfindungsgemäßen Vorrichtung wird eine besonders einfache und zweckmäßige Lösung für das Fräsen von entgegengesetzten Gehrungen in Sprossenrahmenteilen und das Nuten der Plattungen zwischen den Gehrungen bei sehr geringem Aufwand erreicht. Da das Nuten der Plattung in einem Arbeitsvorgang zwischen dem Fräsen der ersten und der zweiten Gehrung erfolgt, ist der Zeitaufwand für ein Arbeitsspiel mit einer derartigen Vorrichtung vorhältnismäßig gering, so daß insgesamt die erfindungsgemäße Vorrichtung für den Klein- und Mittelbetrieb eine entscheidende Arbeitserleichterung erbringt.With the method according to the invention and the device according to the invention, a particularly simple and expedient solution for milling opposite miter joints in rung frame parts and grooving the cladding between the miter joints is achieved with very little effort. Since the grooving of the plating takes place in one operation between the milling of the first and the second miter, the time required for a work cycle with such a device is comparatively small, so that the device according to the invention provides a decisive simplification of work for small and medium-sized businesses.

Nachstehend wird die Erfindung in Verbindung mit der Zeichnung anhand eines Ausführungsbeispieles erläutert. Es zeigt:

  • Fig. 1 eine Prinzipskizze der Arbeitsweise der Vorrichtung nach der Erfindung,
  • Fig. 2 eine perspektivische Ansicht eines Werkstückes mit zwei gegenüberliegenden, ausgefrästen Gehrungen und einer ausgefrästen Plattung,
  • Fig. 3 eine schematische Darstellung der Vorrichtung nach der Erfindung in Vorderansicht,
  • Fig. 4 eine schematische Darstellung der Vorrichtung nach der Erfindung in Seitenansicht,
  • Fig. 3 eine schematische Darstellung der Vorrichtung nach der Erfindung in Aufsicht, und
  • Fig. 6 eine andere Ausführungsform eines Nuterwerkzeuges.
The invention is explained below in connection with the drawing using an exemplary embodiment. It shows:
  • 1 is a schematic diagram of the operation of the device according to the invention,
  • 2 is a perspective view of a workpiece with two opposed, milled miters and a milled plate,
  • 3 is a schematic representation of the device according to the invention in front view,
  • 4 shows a schematic illustration of the device according to the invention in side view,
  • Fig. 3 is a schematic representation of the device according to the invention in supervision, and
  • Fig. 6 shows another embodiment of a grooving tool.

Bei der Prinzipdarstellung nach Fig. 1 ist mit 1 bzw. 1' das Fräserwerkzeug dargestellt. Der Fräser 2 ist mit seinem Schaft 3 an einem Haltekopf 4 befestigt. Schaft 3 mit Fräser 2 werden über einen Antriebsmotor 3 angetrieben. Die Halterung 4 des Schaftes ist in einer Werkzeugführung 6 befestigt und in Pfeilrichtung 7 relativ zu einer Werkstückaufnahme 8 verschiebbar, die das Werkstück 9, z.B. eine Sprossenrahmenleiste, mit T-förmigem Querschnitt aufnimmt. Das Werkstück 9 weist Schenkel 10 und 11 auf, in die der Fräser die Gehrungen 12, 13 einfräst. Das Werkstück 9 ist in einer Aufspannvorrichtung 14, 15 positioniert. Über eine Spannvorrichtung 16 wird ein Spanndruck gegen die Aufspannvorrichtung ausgeübt, um das Werkstück auf der Aufspannvorrichtung 14, 15 zu blockieren. Anschließend wird die Werkstückaufnahme 8 um eine Drehachse 17 in einer Kreislinie 18 geschwenkt. Dabei kommt das Werkstück 9 in Eingriff mit einem Nuteraggregat 19, dessen Nuterwerkzeug 20 eine Plattung 21 in das Werkstück 9 einfräst. Das Nuteraggregat 19 ist im Rahmengestelt der Gesamtvorrichtung höhenverstellbar angeordnet.1, the milling tool is shown with 1 or 1 '. The milling cutter 2 is fastened with its shaft 3 to a holding head 4. Shank 3 with milling cutter 2 are driven by a drive motor 3. The holder 4 of the shaft is fastened in a tool guide 6 and can be displaced in the direction of the arrow 7 relative to a workpiece holder 8 which holds the workpiece 9, e.g. a rung frame bar, with a T-shaped cross-section. The workpiece 9 has legs 10 and 11 into which the milling cutter mills the mitres 12, 13. The workpiece 9 is positioned in a clamping device 14, 15. A clamping pressure is exerted against the clamping device via a clamping device 16 in order to block the workpiece on the clamping device 14, 15. The workpiece holder 8 is then pivoted about an axis of rotation 17 in a circular line 18. The workpiece 9 comes into engagement with a nuting unit 19, the nuting tool 20 of which milled a plating 21 into the workpiece 9. The groove unit 19 is arranged in a height-adjustable manner in the frame configuration of the overall device.

Die Arbeitsweise der erfindungsgemäßen Vorrichtung ist wie folgt: Das Fräserwerkzeug 1 wird in der schematischen Darstellung nach Fig. 1 in Pfeilrichung 7 nach rechts verschoben und fräst bei dieser Bewegung eine Gehrung 12 in das Werkstück 9. Dieser Bewegungsvorgang wird an der mit 1' bezeichneten Stelle beendet. Anschließend wird die Werkstückaufnahme 8 mit dem Werkstück 9 um die Drehachse 17 längs der Linie 18 um 180° verschwenkt. Bei einer Teilschwenkung um 90° kommt das Werkstück 9 in der Werkstückaufnahme 8 mit dem Nuterwerkzeug 20 in Eingriff, das eine Plattung 21 im Werkstück fräst. Dann wird das Werkstück 9 mit der Werkstückaufnahme in die Position 8' weitergeschwenkt und nimmt damit eine um 180° gegenüber der Ausgangsstellung verschwenkte Stellung ein. In dieser Position des Werkstückes 9 wird das Fräserwerkzeug 1 aus der Stellung 1' von rechts nach links in der Zeichnung verschoben, wobei der Fräser 2 die zweite Gehrung 13 frest und das Fräserwerkzeug 1 schließlich die Ausgangsposition links in der Zeichnung wieder einnimmt. Damit ist ein Arbeitsspiel der Vorrichtung abgeschlossen. Das mit den beiden entgegengesetzten Gehrungen 12,13 und der Plattung 21 versehene fertigbearbeitete Werkstück 9 ist in fig. 2 in perspektivischer Ansicht dargestellt.The operation of the device according to the invention is as follows: The milling tool 1 is shifted to the right in the direction of arrow 7 in the schematic illustration according to FIG. 1 and mills a miter 12 into the workpiece 9 during this movement. This movement process is indicated at 1 ' completed. The workpiece holder 8 with the workpiece 9 is then pivoted about the axis of rotation 17 along the line 18 by 180 °. With a partial pivoting by 90 °, the workpiece 9 in the workpiece holder 8 engages with the grooving tool 20, which mills a plate 21 in the workpiece. Then the workpiece 9 is pivoted further with the workpiece holder into the position 8 'and thus assumes a position pivoted by 180 ° with respect to the starting position. In this position of the workpiece 9, the milling cutter 1 is shifted from the position 1 'from right to left in the drawing, the milling cutter 2 seizing the second miter 13 and the milling cutter 1 finally assuming the starting position on the left in the drawing. This completes one working cycle of the device. The finished workpiece 9 provided with the two opposing miters 12, 13 and the plating 21 is shown in FIG. 2 shown in perspective view.

Dar Aufbau der erfindungsgemäßen Vorrichtung ist in den Figuren 3,4 und 5 näher dargestellt. Der Maschinenrahmen 22 der Vorrichtung besteht aus einem Unterteil 23, das das Nuteraggregat 19 aufnimmt, und einem Überteil 24, das das Fräserwerkzeug 1 und die Werkstückaufnahme 8 mit Verkstück 9 aufnimmt, im Unterteil 23 ist das Nuteraggregat 19, das den Nuterantrieb mit einschließt, in einen Rahmenteil 25 befestigt, das an einem Zwischenboden 26 am Maschinenrahmen aufgehängt ist. Die Höhenverstellung des Nuteraggregates 19 erfolgt durch Höhenverstellvorrichtungen 27, 27. Die Höhenverstellung des Nuterwerkzeuges 20 bzw. des Nuteraggregates 19 kann jedoch in beliebiger anderer Weise vorgenommen werden. Unabhängig von und zusätzlich zur Höhenverstellung ist das Nuterwerkzeug seitlich zur Durchführung einer Korrekturbewegung in der Zuordnung zum Fräserwerkzeug in geringem Maße verstellbar, wie mit Pfeil 28 angedeutet.The structure of the device according to the invention is shown in more detail in FIGS. 3, 4 and 5. The machine frame 22 of the device consists of a lower part 23, which receives the grooving unit 19, and an upper part 24, which receives the milling tool 1 and the workpiece holder 8 with a piece 9, in the lower part 23 is the grooving unit 19, which includes the grooving drive, in fixed a frame part 25 which is suspended from an intermediate floor 26 on the machine frame. The height adjustment of the nut unit 19 is carried out by means of height adjustment devices 27, 27. The height adjustment of the nut tool 20 or the nut unit 19 can, however, be carried out in any other manner. Irrespective of and in addition to the height adjustment, the grooving tool can be adjusted to a small extent laterally in order to carry out a correction movement in the assignment to the milling cutter tool, as indicated by arrow 28.

Das Unterteil 23 und das Oberteil 24 der Vorrichtung bestehen aus vertikalen und horizontalen Trägern, die zu einem Rahmengestell geschlossen sind, und werden von einem im Bereich des Oberteiles 23 seitlich und vorne geöffneten Gehäuse 29 umschlossen. Auf der Oberseite des Oberteiles 24 sind Träger 30, 31 bsfestigt, die Lagerböcke 32, 33 für Führungestangen 34, 35 aufnehmen, auf denen eine Trägerplatte 36 in Pfeilrichtung 39 (Fig. 3) verschiebbar ist, die das Fräserwerkzeug 1 aufnimmt. Mit Hilfe eines Handgriffes 37 am Fräserwerkzeug 1 wird das Fräserwerkzeug mit Fräser 2 von der Bedienungsperson über die gesamte Tiefe 1 -1' der Vorrichtung verschoben. An der Trägerplatte 36 ist eine Höhenverstellvorrichtung 38 befestigt, die z. B. aus einem fest mit der Trägerplatte 36 verbundenen Schraubbolzen 40 und einem auf diesem höhenbeweglichen Gewindeeinstellrad 41 besteht, dessen Höhenbewegung auf das Fräserwerkzeug 1 übertragen wird. Die Werkstückaufnahme 8 mit dem Werkstück 9 ist am Rahmengestell bzw. am Gehäuse 29 drehbar um eine Achse 17 höhenverstellbar befestigt. Auf gehäusefesten Zapfen 42,43 sind zylinderförmige Drehglieder 44,45 gelagert, mit deren äußeren Enden Betätigungshebel 46, 47 befestigt sind und mit denen die Werkstückaufnahmevorrichtung 8 verbunden ist. Mit Hilfe der Betätigungshebel 46, 47 wird die Werkstückaufnahmevorrichtung 8 mit dem Werkstück 9 längs der strichpunktierten Linie 18 in Fig. 1 gedreht. Beide Drehglieder 44, 45 sind gleich ausgebildet und nehmen jeweils eine Aufnahmeplatte 48 auf, die mit dem betreffenden Drehglied fest verbunden ist. Die vertikale Aufnahmeplatte 48 weist einen waagerechten Schenkel 49 auf, durch den ein Bolzen 50 geführt ist, der z. B. mit Schraubgewinde versehen ist, mit welchem in Gewindeeinstellrad 51 höhenvestellbar verbunden ist. Der Bolzen 50 ist mit einer horizontalen Trägerplatte 52-verbunden, die eine zweite, bewegliche Aufahmeplatten 53 aufnimmt. Das Werkstück 9 ist zwischen den beiden Aufnahmeplatten 48 und 53 angeordnet. Mit 54 ist ein gegen die Aufnahmeplatte 53 wirkender Schieber bezeichnet, der in einem Führungsglied 55 geführt ist, das über einen Flansch 56 mit der Trägerplatte 52 verbunden ist. An der Trägerplatte 52 bzw. am Flansch 56 ist ein Hebelarm 57 befestigt, der mit einem am Schieber 54 angelenkten Zwischenhebel 58 gelenkig verbunden ist, derart, daß bei einer Betätigung des Hebels 57 um den Schwenkpunkt 59 der Schieber 54 gegen die bewegliche Aufnahmeplatte 53 gepreßt wird und damit das Werkstück 9 zwischen Aufnahmeplatte 48 und 53 durch Spanndruck festgelegt wird. Die Verspannung der Werkstücke kann wahlweise jedoch auch pneumatisch, nämlich über Druckzylinder, erfolgen. Die Werkstückaufnahme-Platten 48 und 53 sind entsprechend der Form des Fräsers 2 sowie bei 62 entsprechend der Form des Nuterwerkzeuges 20 ausgespart und geteilt, sie stellen einen Splitterschutz dar.The lower part 23 and the upper part 24 of the device consist of vertical and horizontal supports which are closed to form a frame and are enclosed by a housing 29 which is open laterally and at the front in the region of the upper part 23. Carriers 30, 31 are fixed on the upper side of the upper part 24 and receive the bearing blocks 32, 33 for guide rods 34, 35, on which a carrier plate 36, which receives the milling cutter tool 1, can be displaced in the direction of the arrow 39 (FIG. 3). With the help of a handle 37 on the milling tool 1, the milling tool with milling cutter 2 is moved by the operator via the total depth 1 -1 'of the device. On the support plate 36, a height adjustment device 38 is attached, the z. B. consists of a fixedly connected to the support plate 36 bolt 40 and a height-adjustable threaded adjusting wheel 41, the height movement of which is transmitted to the milling tool 1. The workpiece holder 8 with the workpiece 9 is fastened on the frame or on the housing 29 so as to be adjustable in height about an axis 17. Cylindrical rotary members 44, 45 are mounted on pins 42, 43 fixed to the housing, with the outer ends of which actuating levers 46, 47 are fastened and to which the workpiece holding device 8 is connected. With the aid of the actuating levers 46, 47, the workpiece holding device 8 with the workpiece 9 is rotated along the dash-dotted line 18 in FIG. 1. Both rotary members 44, 45 are of identical design and each take up a receiving plate 48 which is fixedly connected to the rotary member in question. The vertical mounting plate 48 has a horizontal leg 49 through which a bolt 50 is guided, the z. B. is provided with a screw thread, with which height adjustment is connected in the thread adjusting wheel 51. The bolt 50 is connected to a horizontal support plate 52, which receives a second, movable receiving plate 53. The workpiece 9 is arranged between the two mounting plates 48 and 53. 54 designates a slide acting against the receiving plate 53, which is guided in a guide member 55 which is connected to the carrier plate 52 via a flange 56. On the support plate 52 or on the flange 56, a lever arm 57 is fastened, which is articulated to an intermediate lever 58 articulated on the slide 54, such that when the lever 57 is actuated about the pivot point 59, the slide 54 is pressed against the movable mounting plate 53 is and thus the workpiece 9 is fixed between the mounting plate 48 and 53 by clamping pressure. However, the workpieces can optionally also be clamped pneumatically, namely via pressure cylinders. The workpiece holder plates 48 and 53 are cut out and divided according to the shape of the milling cutter 2 and at 62 according to the shape of the grooving tool 20, they represent a splinter guard.

Claims (7)

1. Process of milling bevels symmetrically arranged on opposite sides of a halving joint of a lattice frame portion, and a groove-like recess connecting said bevels, the workpiece to be milled being fastened within a clamping device, characterised in that
a) the workpiece is milled on one side by moving the milling tool in one direction horizontally over and across the workpiece,
b) the clamping device is turned together with the workpiece 180°,
c) a part-cylindrical recess is automatically milled during said turning movement of the workpiece through the operation path of the grooving tool,
d) the milling tool is returned to the starting position in an opposite direction and the bevel is milled into the second side of the workpiece, and
e) the workpiece is returned into the starting position and is released.
2. Apparatus for milling bevels symmetrically arranged about the horizontal axis of a halving joint of a lattice frame portion, and a groove-like recess connecting the bevels, characterised by
a) guide means (34, 35) fastened to the machine frame (22, 24) for supporting a milling tool (1), which is horizontally movable across the apparatus, is adjustable in height and includes means for milling said bevels,
b) a stationary tool clamping device (8) fastened to the machine frame (22, 24) for supporting the workpiece under pressure, which clamping device (8) is pivotable 180° around its centre axis in such a manner that in both end positions the upper edge of the workpiece has the same height level with respect to the milling tool (1), and
c) a clamping device for a grooving tool (20), which is fastened to the machine frame (22, 24) and is provided with a drive motor, said grooving tool when turning the workpiece clamping device engaging the workpiece for milling the recess (21).
3. Apparatus according to claim 2, characterised in that said guide means (34, 35) comprises two parallel guide rods on which the milling too' (1) is slidably supported.
4. Apparatus according to claim 2, characterised in that said workpiece clamping device (8) is supported in bearings fastened to the machine frame, which bearings allow to turn the workpiece from one workpiece position 180° into the altered workpiece position.
5. Apparatus according to claim 2 or 4, characterised in that said workpiece clamping device (8) is a cut pressure device for positioning the workpiece (9).
6. Apparatus according to claim 2,4 or 5, characterised in that said workpiece clamping device (8) is adjustable in height.
7. Apparatus according to claim 2, characterised in that said grooving tool (20) is adjustable laterally, which means in the longitudinal axis of the workpiece (9) for aligning it with respect to the milling tool (1).
EP85107968A 1984-07-05 1985-06-27 Process and apparatus for milling and grooving wooden-frame parts Expired EP0167112B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85107968T ATE37819T1 (en) 1984-07-05 1985-06-27 METHOD AND DEVICE FOR MILLING AND GROOVING WOOD FRAME PARTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3424680A DE3424680A1 (en) 1984-07-05 1984-07-05 METHOD AND DEVICE FOR MILLING AND SLOTING FRAME PARTS FROM WOOD
DE3424680 1984-07-05

Publications (2)

Publication Number Publication Date
EP0167112A1 EP0167112A1 (en) 1986-01-08
EP0167112B1 true EP0167112B1 (en) 1988-10-12

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ID=6239855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107968A Expired EP0167112B1 (en) 1984-07-05 1985-06-27 Process and apparatus for milling and grooving wooden-frame parts

Country Status (4)

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US (1) US4632165A (en)
EP (1) EP0167112B1 (en)
AT (1) ATE37819T1 (en)
DE (2) DE3424680A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3609331C1 (en) * 1986-03-20 1986-12-04 Erwin 7261 Gechingen Jenkner Sawing and drilling machine for dividing and drilling plate-shaped workpieces
US4934421A (en) * 1989-08-01 1990-06-19 Colonial Saw Company, Inc. Wood cutting machine
US5305812A (en) * 1993-03-05 1994-04-26 Ferencsik Robert P Programmable woodworking dovetail machine
GB2552355A (en) * 2016-07-20 2018-01-24 Mighton Products Ltd Cross joint milling machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1200836A (en) * 1915-03-22 1916-10-10 Harzer Holzwaren Fabrik Gebr Lohoff Wood-turning machine.
DE869555C (en) * 1951-05-08 1953-03-05 Ferdinand Fromm Device and method for notching rod-shaped work-pieces, in particular wooden rods that result in cross-bars
US3735787A (en) * 1970-10-28 1973-05-29 Platt E A Stud and dado cutter
DE2215308C2 (en) * 1972-03-29 1973-11-22 Huebel & Platzer Maschinenbau-Gmbh, 6550 Bad Kreuznach Device for milling wedge teeth

Also Published As

Publication number Publication date
EP0167112A1 (en) 1986-01-08
ATE37819T1 (en) 1988-10-15
DE3424680C2 (en) 1989-06-15
DE3565490D1 (en) 1988-11-17
DE3424680A1 (en) 1986-02-06
US4632165A (en) 1986-12-30

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