EP0181623B1 - Auxiliary device for cutting tenons in boards which form a square angle point - Google Patents

Auxiliary device for cutting tenons in boards which form a square angle point Download PDF

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Publication number
EP0181623B1
EP0181623B1 EP85114264A EP85114264A EP0181623B1 EP 0181623 B1 EP0181623 B1 EP 0181623B1 EP 85114264 A EP85114264 A EP 85114264A EP 85114264 A EP85114264 A EP 85114264A EP 0181623 B1 EP0181623 B1 EP 0181623B1
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EP
European Patent Office
Prior art keywords
alignment
slits
auxiliary device
table support
cutter
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85114264A
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German (de)
French (fr)
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EP0181623A1 (en
Inventor
Robert Wolff
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Individual
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Individual
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Priority to AT85114264T priority Critical patent/ATE33580T1/en
Publication of EP0181623A1 publication Critical patent/EP0181623A1/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
    • B27F1/08—Making dovetails, tongues, or tenons, of definite limited length
    • B27F1/12—Corner- locking mechanisms, i.e. machines for cutting crenellated joints
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303416—Templet, tracer, or cutter
    • Y10T409/303696—Templet

Definitions

  • the invention relates to an auxiliary device for milling grooves in right-angled planks for comb-corner connections by means of a hand-held milling cutter, on the workbench side consisting of a right-angled guide part with a table support plate and a back plate, both plates being comb-like with slots which are flush in the area of the corner angle merge into one another, and on the milling cutter side consists of a guide piece guided in the slots.
  • auxiliary device for milling such corner connections by means of a hand-held router which on the workbench side consists of a right-angled guide part with a table support plate and a back plate. Both plates are comb-like with slots that merge into one another in the area of the corner angle. A guide piece is provided on the cutter side and is guided in the slots.
  • this device it is possible to mill out the grooves in the longitudinal and transverse wood with the required relative positional accuracy without complex calculations and measurements, however, the second board to be machined must be clamped together with the guide piece on the workbench side by exactly half the groove spacing, if e.g. two boards of the same width are to be joined flush. This still requires certain alignment work and leaves room for error.
  • the invention has for its object to improve the generic auxiliary device in such a way that the correct alignment of the second board to be processed results inevitably and foolproof.
  • this object is achieved in that the table support plate is provided on its free edge facing away from the corner angle with at least one alignment finger projecting parallel to the extension of the slots of the table support plate, which, offset from the slots by a gap, is aligned with a prong spacing two slots lies and whose cross-section is adapted to the contour of the groove to be milled.
  • the grooves in the longitudinal wood can first be milled in the usual way. Then this first board is turned over and placed with the groove side - with flush side edges - on the second board.
  • the alignment of the auxiliary device for milling the transverse grooves in the second board is now achieved by inserting the alignment finger into a groove of the first board. In this way, the grooves and tines of the two boards can be correctly and dimensionally allocated without taking any measurements and without complicated alignment work, taking into account their flushness - or a desired edge overhang.
  • two alignment fingers can be arranged in the middle of the table top, the center distance of which is equal to the center distance between two adjacent slots.
  • the arrangement of two alignment fingers improves the guiding accuracy of the auxiliary device, and due to the adjacent position of the alignment fingers, this advantage also with very narrow corner connections, i.e. narrow boards, can take effect.
  • one or two further alignment fingers can be provided in the outer region of the table support plate. These additional alignment fingers improve the contact between the longitudinal timber and the auxiliary device in the case of wide corner connections.
  • the alignment finger (s) can have a trapezoidal cross section, the smaller base lying in the table support plane of the table support plate.
  • This trapezoidal cross section is adapted in a special way to suitably designed dovetail grooves.
  • this embodiment can also be associated with a cylindrical end mill, the diameter of which is equal to the length of the large trapezoidal base. As a result, both frustoconical and cylindrical end mills can be used with the same auxiliary device.
  • the alignment finger or fingers can have a rectangular cross section.
  • This contour is particularly suitable for milling rectangular grooves.
  • a frustoconical end mill can also be used, the smallest diameter of which is equal to the width of the rectangular cross section.
  • the use for both types of grooves is possible.
  • Fig. 1 shows a perspective view of the guide part 1 of an auxiliary device for milling grooves in rectangular planks for comb-corner joints.
  • the guide part has the basic shape of a U-shaped screw clamp which can be clamped to a workbench 3 or the like by means of two clamping screws 2, 2, cf. 4 to 6.
  • the guide part 1 comprises, in addition to a clamping leg 4 for the clamping screws 2, 2, a table support plate 5 and a back plate 6, which are aligned at right angles to one another.
  • Both plates 5, 6 are comb-like with slots 7, 8, which merge into one another in the area of the corner angle 9 between the two plates 5, 6. Tines 10 and 11 remain between the slots 7, 8, which also merge into one another and have the same width as the slots 7, 8.
  • the tines 10, 11 are provided on their longitudinal edges facing the workbench 3 with corner grooves 12, 13 which serve as a guide for a cutter-side, T-shaped guide piece 14; see. 2 to 5 in particular.
  • corner grooves 12, 13 are only indicated on the surfaces of the plates 5 and 6 in FIG. 1.
  • Fig. 4 shows a first step for milling longitudinal grooves 15 in a first board 16, the longitudinal wood.
  • A, e.g. B. frustoconical, end mill 17 is inserted by means of the guide piece 14 into a slot 7 of the table platen 5 in the horizontal direction.
  • a second board 18, the cross member is provided with transverse grooves 19 in a second operation.
  • the table support plate 5 of the guide part 1 is provided with two alignment fingers 22 on its free edge 21 facing away from the corner bracket 9. These protrude parallel to the extension of the slots 7 of the table support plate 5 and are offset from the slots 7 in such a way that they are each in alignment with a prong 10 spacing two slots 7.
  • the first board 16 is now turned over and placed with the groove side on the second board. Then the two alignment fingers 22 are inserted into the end openings of the longitudinal grooves 15 of the first board 16 so far that there is a flush contact between the front edge 23 of the first board 16 and the free edge 21 of the table platen 5.
  • the two boards 16, 18 are now aligned with one another with their side edges 24, 25.
  • the second board 18 can now be clamped to the workbench 3 with the aid of the guide part 1, the transverse grooves 19 to be milled in the vertical direction now being precisely aligned.
  • the two alignment fingers 22 are arranged in the middle of the table support plate 5, their center distance being equal to the center distance between two adjacent slots 7. In this way, good guidance is ensured even with corner connections between very narrow boards.
  • 5 further alignment fingers 26, indicated by dash-dotted lines, can be provided on the free edge 21 in the outer region of the table support plate.
  • FIG. 7 shows a section in the area of a slot 8 of the back plate, which has a trapezoidally enlarged passage 27 for the frustoconical end mill 17, cf. also FIG. 8.
  • dovetail-shaped grooves 15 are created.
  • This contour is adapted to the cross section of the alignment fingers 22, as FIG. 9 shows more precisely.
  • the alignment finger 22 has a trapezoidal cross-section, the smaller base 28, in adaptation to the flipped first board 16, lying on the table support surface 29 of the table support plate 5.
  • the length 30 of the small trapezoidal base corresponds to the smallest diameter 31 of the truncated cone cutter 17.
  • the embodiment of the passage opening 27 and the alignment finger 22 also allow the use of a cylindrical end mill 32 according to FIG. 10, only its diameter 33 having to be equal to the length of the large trapezoidal base 34 of the alignment finger 22.
  • FIG. 11 shows a second example of an alignment finger 35 with a rectangular cross-section, which of course is first of all adapted to rectangular grooves of the same width.
  • alignment with dotted tail-shaped grooves - or a frustoconical cutter 36 - is also possible if the width of the alignment fingers 35 corresponds to the narrowest width at the opening of this groove.
  • the guide part 37 shows a further embodiment of the guide part 37 of an auxiliary device for milling grooves in the case of boards for comb-corner connections which are to be contracted at right angles.
  • the guide part 37 consists of a guide plate 38 and an alignment plate 39 arranged at right angles to it.
  • the guide plate 38 is, like the table support plate or the back plate of the embodiment according to FIG. 1, provided with comb-like slots 40 which pass through the alignment plate 39.
  • the alignment plate 39 itself has no slots, but is provided on its free edge 42 facing away from the corner angle 41 of the plates 38, 39 with two alignment fingers 43 which protrude perpendicularly to the extent of the slots 40 of the guide plate 38.
  • the alignment fingers are facing the slots 40 offset so that they lie in alignment with a prong 44 spacing two slots 40.
  • the cross section of the alignment fingers 43 is adapted to the contour of a groove 15 to be milled.
  • longitudinal grooves 15 can be milled in a first board 16 in a first step analogous to FIG. 4.
  • the guide plate 38 is placed on the board 16 and the guide part 37 is clamped to the work table 3 with a screw clamp or the like (not shown).
  • transverse grooves 19 can be milled in a second board 18 in a second step.
  • the alignment plate 39 is placed on the second board 18, while the guide plate 38 now lies vertically in front of the work table 3 with the slots 40 pointing downward.
  • the guide part 37 can be precisely aligned again and then clamped onto the work table 3.

Abstract

A milling device for milling grooves into two boards to be joined together at right angles for comb-like wedge joints comprises a right-angled gauge with a supporting plate and a back plate. Both plates of the gauge are provided with slits in a comb-like way, with the slits passing in alignment into one another and being adapted to guide a guiding piece of the milling cutter. The supporting plate is provided at its free edge with projecting aligning fingers which are staggered with respect of the slits. By introducing the aligning fingers into the grooves of the first board, the second board can be exactly aligned for milling the corresponding wedges.

Description

Die Erfindung betrifft eine Hilfsvorrichtung zum Fräsen von Nuten bei rechtwinklig zusammenzuzinkenden Brettern für Kamm-Eckverbindungen mittels eines handgeführten Fräsers, werkbankseitig bestehend aus einem rechtwinkligen Führungsteil mit einer Tischauflageplatte und einer Rückenplatte, wobei beide Platten kammartig mit Schlitzen versehen sind, welche im Bereich des Eckwinkels fluchtend ineinander übergehen, und fräserseitig bestehend aus einem in den Schlitzen geführten Führungsstück.The invention relates to an auxiliary device for milling grooves in right-angled planks for comb-corner connections by means of a hand-held milling cutter, on the workbench side consisting of a right-angled guide part with a table support plate and a back plate, both plates being comb-like with slots which are flush in the area of the corner angle merge into one another, and on the milling cutter side consists of a guide piece guided in the slots.

Bei der Herstellung von Möbeln, Schubladen, Holzkästen und ähnlichem ist es im allgemeinen üblich, zwei mit ihren Enden rechtwinklig aneinanderstossende Bretter durch eine sogenannte Zinkenverbindung zusammenzufügen. In den Enden jedes Brettes werden zu diesem Zweck mehrere Nuten gefräst, wobei die zwischen zwei benachbarten Nuten entstehenden Zinken eine mit den Nuten kongruente Querschnittsform erhalten müssen. Bei einem der Bretter, dem sogenannten «Querholz», müssen die Nuten senkrecht zur Brettebene orientiert sein, während sie beim anderen Brett, dem «Längsholz», parallel zu dessen Hauptflächen verlaufen. Ferner müssen die Nuten und Zinken bei dem einen Brett in völlig exakter Weise um jeweils einen halben Nutmittenabstand gegenüber den Nuten und Zinken des anderen Brettes versetzt sein, damit die Zinken des einen Brettes in die zugehörigen Nuten des anderen Brettes passen.In the manufacture of furniture, drawers, wooden boxes and the like, it is generally customary to join together two boards that abut one another at right angles by means of a so-called tine connection. For this purpose, several grooves are milled in the ends of each board, the tines arising between two adjacent grooves having to have a cross-sectional shape that is congruent with the grooves. With one of the boards, the so-called "cross-timber", the grooves must be oriented perpendicular to the board level, while with the other board, the "longitudinal timber", they run parallel to its main surfaces. Furthermore, the grooves and tines on one board must be offset in a completely exact manner by half a groove center distance from the grooves and tines of the other board so that the tines of one board fit into the associated grooves of the other board.

Durch die DE-PS 26 42 924 ist eine Hilfsvorrichtung zum Fräsen derartiger Eckverbindungen mittels eines hand- geführten Fräsers bekannt, welche werkbankseitig aus einem rechtwinkligen Führungsteil mit einer Tischauflageplatte und einer Rückenplatte besteht. Beide Platten sind kammartig mit Schlitzen versehen, welche im Bereich des Eckwinkels fluchtend ineinander übergehen. Fräserseitig ist ein Führungsstück vorgesehen, welches in den Schlitzen geführt ist. Mittels dieser Vorrichtung ist es möglich, ohne aufwendige Berechnungen und Vermessungen die Nuten im Längs- und Querholz mit der erforderlichen relativen Lagegenauigkeit auszufräsen, jedoch muss das zweite, zu bearbeitende Brett gegenüber dem ersten Brett um exakt halben Nutenabstand versetzt mit dem werkbankseitigen Führungsstück zusammengespannt werden, falls z.B. zwei gleich breite Bretter kantenbündig zusammengefügt werden sollen. Dies verlangt noch gewisse Ausrichtarbeiten und belässt Fehlermöglichkeiten. Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemässe Hilfsvorrichtung dahingehend zu verbessern, dass sich die korrekte Ausrichtung des zweiten zu bearbeitenden Brettes zwangsläufig und narrensicher ergibt.From DE-PS 26 42 924 an auxiliary device for milling such corner connections by means of a hand-held router is known, which on the workbench side consists of a right-angled guide part with a table support plate and a back plate. Both plates are comb-like with slots that merge into one another in the area of the corner angle. A guide piece is provided on the cutter side and is guided in the slots. Using this device, it is possible to mill out the grooves in the longitudinal and transverse wood with the required relative positional accuracy without complex calculations and measurements, however, the second board to be machined must be clamped together with the guide piece on the workbench side by exactly half the groove spacing, if e.g. two boards of the same width are to be joined flush. This still requires certain alignment work and leaves room for error. The invention has for its object to improve the generic auxiliary device in such a way that the correct alignment of the second board to be processed results inevitably and foolproof.

Diese Aufgabe ist erfindungsgemäss dadurch gelöst, dass die Tischauflageplatte an ihrem freien, dem Eckwinkel abgewandten Rand mit mindestens einem parallel zur Erstreckung der Schlitze der Tischauflageplatte vorragenden Ausrichtfinger versehen ist, welcher, zu den Schlitzen auf Lücke versetzt, in Fluchtung zu einem zwei Schlitze distanzierenden Zinken liegt und dessen Querschnitt der Kontur der zu fräsenden Nut angepasst ist. Mittels dieser Hilfsvorrichtung können zunächst die Nuten im Längsholz in üblicher Weise gefräst werden. Sodann wird dieses erste Brett gewendet und mit der Nutseite - bei bündigen Seitenkanten - auf das zweite Brett aufgelegt. Die Ausrichtung der Hilfsvorrichtung zum Fräsen der Quernuten in dem zweiten Brett wird nun durch Einschieben des Ausrichtfingers in eine Nut des ersten Brettes erreicht. Auf diese Weise ist ohne jedes Abmessen und ohne komplizierte Ausrichtarbeiten eine einwandfreie, massgenaue Zuordnung der Nuten und Zinken der beiden Bretter unter Berücksichtigung ihrer Kantenbündigkeit - oder auch eines gewünschten Kantenüberstandes - möglich.According to the invention, this object is achieved in that the table support plate is provided on its free edge facing away from the corner angle with at least one alignment finger projecting parallel to the extension of the slots of the table support plate, which, offset from the slots by a gap, is aligned with a prong spacing two slots lies and whose cross-section is adapted to the contour of the groove to be milled. Using this auxiliary device, the grooves in the longitudinal wood can first be milled in the usual way. Then this first board is turned over and placed with the groove side - with flush side edges - on the second board. The alignment of the auxiliary device for milling the transverse grooves in the second board is now achieved by inserting the alignment finger into a groove of the first board. In this way, the grooves and tines of the two boards can be correctly and dimensionally allocated without taking any measurements and without complicated alignment work, taking into account their flushness - or a desired edge overhang.

Die vorstehend genannte Aufgabe wird auch durch die Merkmale des Anpruch 8 gelöst. Nach einer bevorzugten Ausführungsform können zwei Ausrichtfinger in der Mitte der Tischauf iagepiatte angeordnet sein, deren Mittenabstand gleich dem Mittenabstand zwischen zwei benachbarten Schlitzen ist. Durch die Anordnung von zwei Ausrichtfingern wird die Führungsgenauigkeit der Hilfsvorrichtung verbessert, wobei durch die benachbarte Lage der Ausrichtfinger dieser Vorteil auch bei sehr schmalen Eckverbindungen, d.h. schmalen Brettern, wirksam werden kann.The above-mentioned object is also achieved by the features of claim 8. According to a preferred embodiment, two alignment fingers can be arranged in the middle of the table top, the center distance of which is equal to the center distance between two adjacent slots. The arrangement of two alignment fingers improves the guiding accuracy of the auxiliary device, and due to the adjacent position of the alignment fingers, this advantage also with very narrow corner connections, i.e. narrow boards, can take effect.

Der Erfindung zufolge können ein oder zwei weitere Ausrichtfinger im Aussenbereich der Tischauflageplatte vorgesehen sein. Diese zusätzlichen Ausrichtfinger verbessern die Anlage zwischen dem Längsholz und der Hilfsvorrichtung im Falle von breiten Eckverbindungen.According to the invention, one or two further alignment fingers can be provided in the outer region of the table support plate. These additional alignment fingers improve the contact between the longitudinal timber and the auxiliary device in the case of wide corner connections.

Nach einer ersten Ausführungsform der Erfindung können der bzw. die Ausrichtfinger einen trapezförmigen Querschnitt aufweisen, wobei die kleinere Basis in der Tischauflageebene der Tischauflageplatte liegt. Dieser trapezförmige Querschnitt ist in besondere Weise an entsprechend ausgebildete Schwalbenschwanznuten angepasst. Der Erfindung zufolge kann dieser Ausführungsform aber auch ein zylindrischer Schaftfräser zugeordnet sein, dessen Durchmeser gleich der Länge der grossen Trapezbasis ist. Infolgedessen können mit derselben Hilfsvorrichtung sowohl kegelstumpfförmige als auch zylindrische Schaftfräser eingesetzt werden.According to a first embodiment of the invention, the alignment finger (s) can have a trapezoidal cross section, the smaller base lying in the table support plane of the table support plate. This trapezoidal cross section is adapted in a special way to suitably designed dovetail grooves. According to the invention, this embodiment can also be associated with a cylindrical end mill, the diameter of which is equal to the length of the large trapezoidal base. As a result, both frustoconical and cylindrical end mills can be used with the same auxiliary device.

Gemäss einer zweiten Ausführungsform der Erfindung können der bzw. die Ausrichtfinger einen rechteckigen Querschnitt aufweisen. Diese Kontur ist vor allem für das Fräsen von Rechtecknuten geeignet. Gemäss der Erfindung kann aber auch ein kegelstumpfförmiger Schaftfräser benutzt werden, dessen kleinster Durchmesser gleich der Breite des rechteckigen Querschnittes ist. Auch hier ist also die Anwendung für beide Nutarten möglich.According to a second embodiment of the invention, the alignment finger or fingers can have a rectangular cross section. This contour is particularly suitable for milling rectangular grooves. According to the invention, however, a frustoconical end mill can also be used, the smallest diameter of which is equal to the width of the rectangular cross section. Here too, the use for both types of grooves is possible.

Die Erfindung wird im folgenden anhand der Zeichnung näher erläutert, in der zeigen:

  • Fig. 1 die Hilfsvorrichtung in einer perspektivischen Darstellung,
  • Fig. 2 einen Zinken der Hilfsvorrichtung gemäss einem Schnitt 11-11 in Fig. 1,
  • Fig. 3 einen Randzinken der Hilfsvorrichtung gemäss einem Schnitt 111-111 in Fig. 1,
  • Fig. 4 die Hilfsvorrichtung beim Fräsen des Längsholzes,
  • Fig. 5 die Hilfsvorrichtung beim Fräsen des Querholzes,
  • Fig. 6 die Hilfsvorrichtung gemäss einer Blickrichtung VI in Fig. 5,
  • Fig. 7 einen Ausschnitt VII der Hilfsvorrichtung nach Fig. 1,
  • Fig. 8 einen der Hilfsvorrichtung angepassten Kegelstumpf Fräser gemäss einer Blickrichtung VIII in Fig. 4,
  • Fig. 9 einen Ausrichtfinger der Hilfsvorrichtung gemäss einer Blickrichtung IX in Fig. 1,
  • Fig. 10 einen zylindrischen Schaftfräser in einer analogen Darstellung zu Fig. 8,
  • Fig. 11 eine zweite Ausführungsform eines Ausrichtfingers in einer analogen Darstellung zu Fig. 9 und
  • Fig. 12 eine weitere Ausführungsform einer Hilfsvorrichtung.
The invention is explained in more detail below with reference to the drawing, in which:
  • 1 shows the auxiliary device in a perspective view,
  • 2 shows a tine of the auxiliary device according to a section 11-11 in FIG. 1,
  • 3 shows an edge tine of the auxiliary device according to a section 111-111 in FIG. 1,
  • 4 shows the auxiliary device when milling the longitudinal wood,
  • 5 shows the auxiliary device when milling the cross timber,
  • 6 shows the auxiliary device according to a viewing direction VI in FIG. 5,
  • 7 shows a section VII of the auxiliary device according to FIG. 1,
  • 8 shows a truncated cone cutter adapted to the auxiliary device according to a viewing direction VIII in FIG. 4,
  • 9 shows an alignment finger of the auxiliary device according to a viewing direction IX in FIG. 1,
  • 10 shows a cylindrical end mill in an analogous representation to FIG. 8,
  • 11 shows a second embodiment of an alignment finger in an analogous representation to FIGS. 9 and
  • 12 shows a further embodiment of an auxiliary device.

Fig. 1 zeigt in perspektivischer Darstellung den Führungsteil 1 einer Hilfsvorrichtung zum Fräsen von Nuten bei rechtwinklig zusammenzuzinkenden Brettern für Kamm-Eckverbindungen. Der Führungsteil besitzt die Grundform einer U-förmigen Schraubzwinge, die mittels zweier Spannschrauben 2, 2 an einer Werkbank 3 oder dgl. festspannbar ist, vgl. Fig. 4 bis 6. Der Führungsteil 1 umfasst neben einem Spannschenkel 4 für die Spannschrauben 2, 2 eine Tischauflageplatte 5 und eine Rückenplatte 6, welche rechtwinklig zueinander ausgerichtet sind. Beide Platten 5, 6 sind kammartig mit Schlitzen 7, 8 versehen, die im Bereich des Eckwinkels 9 zwischen beiden Platten 5, 6 fluchtend ineinander übergehen. Zwischen den Schlitzen 7, 8 verbleiben Zinken 10 und 11, die ebenfalls fluchtend ineinander übergehen und die gleiche Breite wie die Schlitze 7, 8 besitzen.Fig. 1 shows a perspective view of the guide part 1 of an auxiliary device for milling grooves in rectangular planks for comb-corner joints. The guide part has the basic shape of a U-shaped screw clamp which can be clamped to a workbench 3 or the like by means of two clamping screws 2, 2, cf. 4 to 6. The guide part 1 comprises, in addition to a clamping leg 4 for the clamping screws 2, 2, a table support plate 5 and a back plate 6, which are aligned at right angles to one another. Both plates 5, 6 are comb-like with slots 7, 8, which merge into one another in the area of the corner angle 9 between the two plates 5, 6. Tines 10 and 11 remain between the slots 7, 8, which also merge into one another and have the same width as the slots 7, 8.

Die Zinken 10, 11 sind an ihren der Werkbank 3 zugewandten Längskanten mit Ecknuten 12, 13 versehen, welche als Führung für ein fräserseitiges, T-förmiges Führungsstück 14 dienen; vgl. insbesondere Fig. 2 bis 5. In Fig. 1 sind die Ecknuten 12, 13 der Übersicht halber nur an den Oberflächen der Platten 5 und 6 angedeutet.The tines 10, 11 are provided on their longitudinal edges facing the workbench 3 with corner grooves 12, 13 which serve as a guide for a cutter-side, T-shaped guide piece 14; see. 2 to 5 in particular. For the sake of clarity, the corner grooves 12, 13 are only indicated on the surfaces of the plates 5 and 6 in FIG. 1.

Fig. 4 zeigt einen ersten Arbeitsschritt zum Fräsen von Längsnuten 15 in einem ersten Brett 16, dem Längsholz. Ein, z. B. kegelstumpfförmiger, Schaftfräser 17 wird dabei mittels des Führungsstückes 14 in einen Schlitz 7 der Tischauflageplatte 5 in horizontaler Richtung eingeführt.Fig. 4 shows a first step for milling longitudinal grooves 15 in a first board 16, the longitudinal wood. A, e.g. B. frustoconical, end mill 17 is inserted by means of the guide piece 14 into a slot 7 of the table platen 5 in the horizontal direction.

In einem zweiten Arbeitsgang wird gemäss den Fig. 5 und 6 ein zweites Brett 18, das Querholz, mit Quernuten 19 versehen. Um hier eine exakte Lage der Quernuten 19 zu den zwischen zwei Längsnuten 15 des ersten Brettes 16 verbleibenden Zinken 20 zu erreichen, ist die Tischauflageplatte 5 des Führungsteils 1 an ihrem freien, dem Eckwinkel 9 abgewandten Rand 21 mit zwei Ausrichtfingern 22 versehen. Diese ragen parallel zur Erstreckung der Schlitze 7 der Tischauflageplatte 5 vor und sind zu den Schlitzen 7 derart auf Lücke versetzt, dass sie jeweils in Fluchtung zu einem zwei Schlitze 7 distanzierenden Zinken 10 liegen.5 and 6, a second board 18, the cross member, is provided with transverse grooves 19 in a second operation. In order to achieve an exact position of the transverse grooves 19 with respect to the tines 20 remaining between two longitudinal grooves 15 of the first board 16, the table support plate 5 of the guide part 1 is provided with two alignment fingers 22 on its free edge 21 facing away from the corner bracket 9. These protrude parallel to the extension of the slots 7 of the table support plate 5 and are offset from the slots 7 in such a way that they are each in alignment with a prong 10 spacing two slots 7.

Das erste Brett 16 wird nun gewendet und mit der Nutseite auf das zweite Brett aufgelegt. Sodann werden die beiden Ausrichtfinger 22 in die stirnseitigen Öffnungen der Längsnuten 15 des ersten Brettes 16 so weit eingeführt, dass eine bündige Anlage zwischen der Vorderkante 23 des ersten Brettes 16 und dem freien Rand 21 der Tischauflageplatte 5 gegeben ist. Die beiden Bretter 16, 18 werden nun mit ihren Seitenrändern 24, 25 bündig aufeinander ausgerichtet. Das zweite Brett 18 kann nun mit Hilfe des Führungsteils 1 an der Werkbank 3 festgespannt werden, wobei nunmehr eine exakte Ausrichtung der in vertikaler Richtung zu fräsenden Quernuten 19 gegeben ist.The first board 16 is now turned over and placed with the groove side on the second board. Then the two alignment fingers 22 are inserted into the end openings of the longitudinal grooves 15 of the first board 16 so far that there is a flush contact between the front edge 23 of the first board 16 and the free edge 21 of the table platen 5. The two boards 16, 18 are now aligned with one another with their side edges 24, 25. The second board 18 can now be clamped to the workbench 3 with the aid of the guide part 1, the transverse grooves 19 to be milled in the vertical direction now being precisely aligned.

Die beiden Ausrichtfinger 22 sind in der Mitte der Tischauflageplatte 5 angeordnet, wobei ihr Mittenabstand gleich dem Mittenabstand zwischen zwei benachbarten Schlitzen 7 ist. Auf diese Weise ist auch bei Eckverbindungen zwischen sehr schmalen Brettern eine gute Führung gewährleistet. Zur Verbesserung der Ausrichtung zwischen dem ersten Brett 16 und dem Führungsteil 1 bei sehr breiten Brettern können am freien Rand 21 im Aussenbereich der Tischauflageplatte 5 weitere, strichpunktiert angedeutete Ausrichtfinger 26 vorgesehen sein.The two alignment fingers 22 are arranged in the middle of the table support plate 5, their center distance being equal to the center distance between two adjacent slots 7. In this way, good guidance is ensured even with corner connections between very narrow boards. In order to improve the alignment between the first board 16 and the guide part 1 in the case of very wide boards, 5 further alignment fingers 26, indicated by dash-dotted lines, can be provided on the free edge 21 in the outer region of the table support plate.

Fig. 7 zeigt einen Ausschnitt im Bereich eines Schlitzes 8 der Rückenplatte, welcher einen trapezförmig erweiterten Durchlass 27 für den kegelstumpfförmigen Schaftfräser 17 aufweist, vgl. auch Fig. 8. Mit eines solchen Fräsers 17 entstehen schwalbenschwanzförmige Nuten 15. Dieser Kontur ist der Querschnitt der Ausrichtfinger 22 angepasst, wie Fig. 9 genauer zeigt. D. h. der Ausrichtfinger 22 weist einen trapezförmigen Querschnitt auf, wobei die kleinere Basis 28, in Anpassung an das gewendete erste Brett 16, an der Tischauflagefläche 29 der Tischauflageplatte 5 liegt. Die Länge 30 der kleinen Trapezbasis entspricht dabei dem kleinsten Durchmesser 31 des Kegelstumpf-Fräsers 17.FIG. 7 shows a section in the area of a slot 8 of the back plate, which has a trapezoidally enlarged passage 27 for the frustoconical end mill 17, cf. also FIG. 8. With such a cutter 17, dovetail-shaped grooves 15 are created. This contour is adapted to the cross section of the alignment fingers 22, as FIG. 9 shows more precisely. I.e. the alignment finger 22 has a trapezoidal cross-section, the smaller base 28, in adaptation to the flipped first board 16, lying on the table support surface 29 of the table support plate 5. The length 30 of the small trapezoidal base corresponds to the smallest diameter 31 of the truncated cone cutter 17.

Die Ausführungsform der Durchtrittsöffnung 27 und der Ausrichtfinger 22 erlauben aber auch den Einsatz eines zylindrischen Schaftfräsers 32 gemäss Fig. 10, wobei lediglich dessen Durchmesser 33 gleich der Länge der grossen Trapezbasis 34 des Ausrichtfingers 22 sein muss.The embodiment of the passage opening 27 and the alignment finger 22 also allow the use of a cylindrical end mill 32 according to FIG. 10, only its diameter 33 having to be equal to the length of the large trapezoidal base 34 of the alignment finger 22.

Fig. 11 zeigt ein zweites Beispiel für einen Ausrichtfinger 35 mit rechteckigem Querschnitt, welcher selbstverständlich zunächst einmal Rechtecknuten gleicher Breite angepasst ist. Grundsätzlich ist damit auch die Ausrichtung auf strichpunktiert angedeutete, schwalbenschwanzförmige Nuten - bzw. einen kegelstumpfförmigen Fräser 36 - möglich, wenn die Breite der Ausrichtfinger 35 der engsten Weite an der Öffnung dieser Nut entspricht.11 shows a second example of an alignment finger 35 with a rectangular cross-section, which of course is first of all adapted to rectangular grooves of the same width. Basically, alignment with dotted tail-shaped grooves - or a frustoconical cutter 36 - is also possible if the width of the alignment fingers 35 corresponds to the narrowest width at the opening of this groove.

Fig. 12 zeigt eine weitere Ausführungsform des Führungsteils 37 einer Hilfsvorrichtung zum Fräsen von Nuten bei rechtwinklig zusammenzuzinkenden Brettern für Kamm-Eckverbindungen. Der Führungsteil 37 besteht aus einer Führungsplatte 38 und einer rechtwinklig dazu angeordneten Ausrichtplatte 39. Die Führungsplatte 38 ist, analog zur Tischauflageplatte bzw. zur Rückenplatte der Ausführungsform nach Fig. 1, kammartig mit Schlitzen 40 versehen, welche die Ausrichtplatte 39 durchsetzen. Die Ausrichtplatte 39 selbst weist dagegen keine Schlitze auf, ist aber an ihrem freien, dem Eckwinkel 41 der Platten 38, 39 abgewandten Rand 42 mit zwei Ausrichtfingern 43 versehen, die senkrecht zur Erstreckung der Schlitze 40 der Führungsplatte 38 abragen. Die Ausrichtfinger sind zu den Schlitzen 40 auf Lücke versetzt, so dass sie in Fluchtung zu einem zwei Schlitze 40 distanzierenden Zinken 44 liegen. Der Querschnitt der Ausrichtfinger 43 ist der Kontur einer zu fräsenden Nut 15 angepasst.12 shows a further embodiment of the guide part 37 of an auxiliary device for milling grooves in the case of boards for comb-corner connections which are to be contracted at right angles. The guide part 37 consists of a guide plate 38 and an alignment plate 39 arranged at right angles to it. The guide plate 38 is, like the table support plate or the back plate of the embodiment according to FIG. 1, provided with comb-like slots 40 which pass through the alignment plate 39. The alignment plate 39 itself has no slots, but is provided on its free edge 42 facing away from the corner angle 41 of the plates 38, 39 with two alignment fingers 43 which protrude perpendicularly to the extent of the slots 40 of the guide plate 38. The alignment fingers are facing the slots 40 offset so that they lie in alignment with a prong 44 spacing two slots 40. The cross section of the alignment fingers 43 is adapted to the contour of a groove 15 to be milled.

Mit dem Führungsteil 37 können in einem ersten Arbeitsschritt analog zu Fig. 4 Längsnuten 15 in einem ersten Brett 16 gefräst werden. Die Führungsplatte 38 wird zu diesem Zweck auf dem Brett 16 aufgelegt und der Führungsteil 37 mit einer nicht näher gezeigten Schraubzwinge oder dgl. am Werktisch 3 festgespannt.With the guide part 37, longitudinal grooves 15 can be milled in a first board 16 in a first step analogous to FIG. 4. For this purpose, the guide plate 38 is placed on the board 16 and the guide part 37 is clamped to the work table 3 with a screw clamp or the like (not shown).

In einem zweiten Arbeitsschritt können analog zu den Fig. 5 und 6 Quernuten 19 in einem zweiten Brett 18 gefräst werden. In diesem Falle wird die Ausrichtplatte 39 auf dem zweiten Brett 18 aufgelegt, während die Führungsplatte 38 mit nach unten gerichteten Schlitzen 40 nunmehr vertikal vor dem Werktisch 3 liegt. Durch Einführen der Ausrichtfinger 43 in die Nuten 15 des ersten Brettes 16 kann der Führungsteil 37 wieder exakt ausgerichtet und anschliessend am Werktisch 3 festgespannt werden.5 and 6, transverse grooves 19 can be milled in a second board 18 in a second step. In this case, the alignment plate 39 is placed on the second board 18, while the guide plate 38 now lies vertically in front of the work table 3 with the slots 40 pointing downward. By inserting the alignment fingers 43 into the grooves 15 of the first board 16, the guide part 37 can be precisely aligned again and then clamped onto the work table 3.

Claims (8)

1. Auxiliary device for cutting grooves in boards which form a right-angled joint for mating corner connections, by means of a hand-guided cutter, consisting, as regards the workbench, of a right-angled guide piece (1) with a table support plate (5) and a back plate (6), in which the two plates (5, 6) are provided with slits (7, 8) in the manner of a comb, which pass on into each other in alignment in the region of the corner angle (9), and consisting, as regards the cutter, of a guide piece which is guided into the slits (7, 8), characterized in that the table support plate (5) is provided on its free edge (21), facing away from the corner angle (9), with at least one alignment finger (22), projecting parallel to the extent of the slits (7) of the table support plate (5), which finger, displaced in a gap between the slits (7), lies in alignment with a prong (10) separating two slits (7), and the cross-section of which is adapted to the contour of the groove (15) which is to be cut.
2. Auxiliary device according to Claim 1, characterized in that two alignment fingers (22) are arranged in the centre of the table support plate (5), the centre-to-centre distance of which fingers is equal to the centre-to-centre distance between two adjacent slits (7).
3. Auxiliary device according to Claim 2, characterized in that one or two further alignment fingers (26) are provided in the outer region of the table support plate (5).
4. Auxiliary device according to one or more of Claims 1 to 3, characterized in that the alignment finger(s) (22) have a trapezoidal cross-section, in which the smaller base (28) lies in the table support plane (29) of the table support plate (5).
5. Auxiliary device according to Claim 4, characterized by an associated cylindrical shank-type cutter (32), the diameter (33) of which is equal to the length of the large trapezium base (34).
6. Auxiliary device according to one or more of Claims 1 to 3, characterized in that the alignment finger(s) (35) have a rectangular cross-section.
7. Auxiliary device according to Claim 6, characterized by an associated shank-type cutter (36), which is in the shape of a truncated cone, the smallest diameter of which cutter is equal to the width of the rectangular cross-section of the alignment finger (35).
8. Auxiliary device for cutting grooves in boards which form a right-angled joint for mating corner connections by means of a hand-guided cutter, consisting, as regards the workbench, of a right-angled guide piece (37) with a guide plate (38) and an alignment plate (39), in which the guide plate (38) is provided with slits (40) in the manner of a comb, which penetrate the alignment (39) in the region of the corner angle (41), and consisting, as regards the cutter, of a guide piece (14) which is guided into the slits (40), characterized in that the alignment plate (39) is provided on its free edge (42), facing away from the corner angle (41), with at least one alignment finger (43), projecting vertically to the extent of the slits (40) of the guide plate (38), which finger, displaced in a gap between the slits (40), lies in alignment with a prong (44) separating two slits (40), and the cross-section of which is adapted to the contour of the groove (15) which is to be cut.
EP85114264A 1984-11-09 1985-11-08 Auxiliary device for cutting tenons in boards which form a square angle point Expired EP0181623B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85114264T ATE33580T1 (en) 1984-11-09 1985-11-08 AUXILIARY DEVICE FOR ROUTING GROOVES IN BOARDS TO BE JOINTED AT RIGHT ANGLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843440945 DE3440945A1 (en) 1984-11-09 1984-11-09 AUXILIARY DEVICE FOR MILLING GROOVES ON RIGHT-ANGLED BOARDS
DE3440945 1984-11-09

Publications (2)

Publication Number Publication Date
EP0181623A1 EP0181623A1 (en) 1986-05-21
EP0181623B1 true EP0181623B1 (en) 1988-04-20

Family

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Application Number Title Priority Date Filing Date
EP85114264A Expired EP0181623B1 (en) 1984-11-09 1985-11-08 Auxiliary device for cutting tenons in boards which form a square angle point

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US (1) US4648433A (en)
EP (1) EP0181623B1 (en)
AT (1) ATE33580T1 (en)
DE (2) DE3440945A1 (en)

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US4928399A (en) * 1989-02-09 1990-05-29 Jer's Pattern Project, Inc. Marking template
US5199477A (en) * 1992-02-13 1993-04-06 Keller David A Apparatus and method for forming dovetail joints
US5421384A (en) * 1994-01-26 1995-06-06 Nuwordu; Alexander A. Unlimited width dovetailing system with overhead clamp
US5692861A (en) * 1996-09-12 1997-12-02 Stottmann; Richard L. Method and device for making dovetail and pin pattern plates
US7434604B2 (en) * 2004-07-30 2008-10-14 Black & Decker Inc. Jig apparatus
US7455089B2 (en) * 2004-07-30 2008-11-25 Black & Decker Inc. Jig apparatus
US7857020B2 (en) * 2004-07-30 2010-12-28 Black & Decker Inc. Jig apparatus
GB2422132B (en) * 2005-01-12 2009-07-15 Derek Quinton Slot cutting apparatus
US7241091B1 (en) * 2006-06-23 2007-07-10 Kun-Ying Yang Decoration-used mold unit
US7828024B1 (en) * 2008-05-07 2010-11-09 General Tool Mfg. Co, LLC Dovetail jig
US20160214425A1 (en) * 2015-01-22 2016-07-28 Mabel Ko Writing Template

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DE1004363B (en) * 1953-11-06 1957-03-14 Bosch Gmbh Robert Additional device for electrical hand machine tools with a support table for guiding the workpiece to be processed
US3606916A (en) * 1969-09-30 1971-09-21 Mildred M Day Gauge apparatus and method for cutting uniformly spaced routered tenons and mortises
DE2524247A1 (en) * 1975-05-31 1976-12-09 Robert Wolff Wood section dovetail milling gauge device - has system of double screw clamps with raster beam attachment as milling guide
IT1075361B (en) * 1976-05-15 1985-04-22 Wolff Robert MASK FOR MILLING DOVETAIL SOCKS IN TABLES TO BE JOINED WITH ORTOGONLAE JOINT
DE2642924C3 (en) * 1976-09-24 1980-02-07 Robert 5446 Engeln Wolff Auxiliary device for milling dovetail grooves on boards that are to be joined together at right angles

Also Published As

Publication number Publication date
US4648433A (en) 1987-03-10
EP0181623A1 (en) 1986-05-21
DE3562198D1 (en) 1988-05-26
ATE33580T1 (en) 1988-05-15
DE3440945A1 (en) 1986-05-15

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