EP0065769A2 - Grinding device for machining platelike workpieces with profiled and curved edges - Google Patents

Grinding device for machining platelike workpieces with profiled and curved edges Download PDF

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Publication number
EP0065769A2
EP0065769A2 EP82104456A EP82104456A EP0065769A2 EP 0065769 A2 EP0065769 A2 EP 0065769A2 EP 82104456 A EP82104456 A EP 82104456A EP 82104456 A EP82104456 A EP 82104456A EP 0065769 A2 EP0065769 A2 EP 0065769A2
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EP
European Patent Office
Prior art keywords
grinding
grinding device
support
belt
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP82104456A
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German (de)
French (fr)
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EP0065769A3 (en
Inventor
Giorgio Stefani
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Stemac SpA
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Stemac SpA
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Publication date
Application filed by Stemac SpA filed Critical Stemac SpA
Publication of EP0065769A2 publication Critical patent/EP0065769A2/en
Publication of EP0065769A3 publication Critical patent/EP0065769A3/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/16—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape

Definitions

  • the above invention relates to a belt grinding device for processing plate-shaped workpieces, with profiled and curved edges.
  • plate-shaped workpieces with profiled edges are used. They often have not only a profiled edge on the upper side, which delimits the plate-shaped workpiece, but this edge also has a curved shape.
  • Panel-like workpieces of this type are usually made of solid wood, or using chipboard, which is coated with a veneer, the grain of which mostly runs in the longitudinal direction of the furniture door.
  • the object of the above invention is to propose a belt grinding device with which the disadvantages of the prior art can be remedied by proposing a device with which it becomes possible for the first time, automatically and in the course, as well as in the direction of the wood grain, profiled and curved or crooked Sanding edges of plate-like workpieces, which are used, for example, in the furniture industry, and to achieve such high processing accuracy that even shaped and curved edges of plate-like workpieces, which are coated with an extremely thin veneer, can be sanded without any manual work to be painted in the immediately after the grinding process.
  • the device according to the invention which is characterized in that a belt grinding direction is movably arranged in a horizontal plane, controlled in accordance with the shape of the profile, and that the belt grinding device furthermore, according to the course of the profile curve, by one, perpendicular to Horizontal plane axis (2) is pivotally controlled.
  • the grinding device is guided according to the curvature or curvature of the profile and that due to the execution of a swiveling movement about a vertical axis, a follow-up of the belt grinding unit and tangential alignment with respect to the silence of the profile is ensured, whereby the sanding belt always works in the direction of the wood grain the best possible grinding effect is achieved.
  • the grinding device 1 essentially consists of a support 4, which is slidably supported by horizontally arranged parallel guides 5.
  • the guides 5 are firmly connected to the machine frame (not shown).
  • a precision threaded nut 6 is attached to the support 4.
  • the nut 6 is operatively connected to a highly precise threaded spindle 7, advantageously with a recirculating ball screw.
  • the threaded spindle 7 is arranged parallel to the horizontally arranged guides 5 and connected to the drive shaft of a spreadable motor 8.
  • a known controllable DC motor is advantageously used, to which, for example, a control device 9 known from the prior art is assigned.
  • the support 4 can be given a translational movement in the direction of the arrow f.
  • From the support 4 there are horizontally arranged arms 10 which carry a further support 11 which can be pivoted about one Vertical axis z is mounted.
  • the support 11 receives a bearing block 12, which receives a deflection roller 13, around which a grinding belt 14 rotates.
  • the sanding belt 14 is also steered around a guide roller 15 which is arranged to be adjustable in the vertical direction, and also, the sanding belt 14 runs around a guide roller 16 which is adjustable in the horizontal direction.
  • the support 11 On its underside, the support 11 receives a small control cylinder 17, advantageously a controllable pneumatic cylinder, which is operatively connected to a grinding shoe 19 via its piston rod 18.
  • the grinding shoe 19 has the shape of the profile to be ground (seen in section) of the plate-shaped workpiece 20. From Fig. 1a it can be seen that the grinding shoe 19 has a trapezoidal shape, i.e. that it tapers wedge-shaped towards workpiece 20. This measure ensures that the grinding belt 14 is properly guided, and at the same time it is possible to use the narrow front of the grinding shoe to also drive relatively tight curves of the profile profile.
  • the workpiece 20 is moved forward by the conveyor belt 2 perpendicular to the plane of the drawing (FIG. 1).
  • the workpiece is held in a precisely defined reference position with respect to the workpiece 20 by the guide rollers 3.
  • the biaxial copying device is of type CPE and is in all its technical details, together with the electronic data processing unit and signal control device, as well as the corresponding electronic connection or connection plates (interfaces), which are absolutely necessary for the connection of the electronic button, from the catalog of Fadis SpA - Divisione Automatismi, based in 21048 Solbiate Arno (Italy).
  • This company offers the described scanning and control device and sells these devices on the Italian and international market.
  • the exact description of the button and the associated control device is therefore omitted, since these components are known from the prior art.
  • Fig. 2 From Fig. 2 it can be seen that the entire. Grinding device 1 is received by the machine frame 25 in a height-adjustable manner.
  • a dovetail guide 26 common in mechanical engineering is advantageously provided, which allows the belt grinding device 1 to be displaced and adjusted relative to the reference plane of the conveyor belt 2 or of the workpiece 20.
  • the holding arm 10 which is operatively connected to the support 4 and receives the support 11 rotatable about the vertical axis Z, also carries a controllable motor, advantageously a direct current motor 27.
  • This motor 27 is located above a reduction gear 28, the output shaft of which receives a chain wheel 29 , with another sprocket 31 via a chain 30 in operative connection.
  • the sprocket 31 is operatively connected to the inside of the support 11 so that the support 11 can be pivoted in the direction of the arrow g (FIG. 2) about the Z axis.
  • the deflection roller 13, which receives the grinding belt 14, is driven by a motor 32 (FIG. 2). 2, the adjustable front guide roller 15 can also be seen.
  • the plate-shaped workpieces 20 are moved in the direction of arrow h by the conveyor belt 2.
  • Fig. 3 the control circuit for the motor 8 is shown schematically.
  • the motor 8 is provided for the displacement of the grinding device 4 in a horizontal plane.
  • the feeler wheel 22 is in contact with the edge 21 of the plate-shaped workpiece 20 and is fastened to the feeler rod 23 of the electronic, biaxial copying device or feeler device 24.
  • the signal outputs of the scanning device 24 are connected via one or more lines 33 to an electronic evaluation and control unit 34 (NC unit).
  • the output of the control unit 34 is via a Line 35 with the input of the control device 9 in operative connection, and this control device 9 is assigned to the controllable DC motor 8, which drives the threaded spindle 7, which is operatively connected to the threaded nut 6, which in turn is attached to the support 4.
  • a recording device 36 can also be provided, with which, for example, the signals emitted by the electronic, biaxial button 24 when a workpiece 20 is moved are stored. These signals are recorded, for example, by means of a magnetic tape cassette or a similar recording device, and are used for the purposes explained later.
  • the threaded nut 6 is also operatively connected to the electronic, biaxial button 24 via a line 36, so that, with the aid of known transmission means, the scanning device is informed of the exact, actual position of the threaded nut 6.
  • a further output of the electronic, biaxial button 24 is connected via a line 37 to a further input of the electronic control and processing unit 34.
  • the corresponding output signal of the unit 34 is fed via a line 38 to the controllable motor 27, the drive shaft of which, with the interposition of a reduction gear 28, is operatively connected to the chain wheel 29.
  • the sprocket 29 takes the chain 30, which is operatively connected to the sprocket 31, which is attached to the support 11, which is pivotally mounted about the vertical axis Z.
  • a rotary potentiometer 39 is also provided, for example, which, in accordance with its angular position, emits a signal which is forwarded to the electronic control unit 34 via a line 40 as an effective angular position value.
  • the control unit 34 uses this signal as a reference signal for the position of the shaft 27 of the motor 27, which receives the chain wheel 29, and thus represents a reference value for the angular position of the grinding unit 11, which can be pivoted about the vertical axis Z via the drive of the chain wheel 31 .
  • FIG. 5 again shows schematically the possibility of pivoting the grinding device 11 about the axis Z; furthermore, the sprocket 29 can be seen from this illustration is provided for driving the chain 30, which is operatively connected to the chain wheel 31, and for pivoting the grinding device 11 (represented by the grinding belt 14) about the vertical axis Z.
  • the grinding roller 50 has a counter profile 52 which corresponds to the profile piece 53 to be ground.
  • the grinding roller 50 is advantageously made of elastic, abrasive material and is rotated by means of a vertically arranged shaft 51 and is also adjustable relative to the profile piece 53.
  • a grinding roller or disc rotating about a horizontally arranged shaft can of course also be used.
  • the position of the roller 50 relative to the workpiece 20 can also be adjusted with the aid of the button 23, 24, which acts on the controllable motors 8, 27.
  • the workpiece 20 to be ground which is fed through the conveyor belt 2 to the grinding device, with the aid of the guide rollers 54 (Fig. 7-8), which are arranged on the opposite side of the button 24 of the conveyor belt 2, set.
  • the guide rollers 54 are adjustable according to the dimensions of the workpiece 20.
  • the push buttons 22, 23, 24 are in a "zero position", ie no control signals are emitted by the push button unit 24, since the push button is exactly at the intersection of the axes X, Y (FIG. 4 a) located.
  • the pushbutton 23 is deflected in the direction of the axes X and Y, and control signals are emitted via the pushbutton unit 24, corresponding to the deflection of the pushbutton, and 3 and 4, these signals are fed to the control circuits, as a result of which a controlled drive of the motor 8 (displacement of the support 4 on the horizontal guides 5) and, with the aid of the controllable motor 27, a pivoting of the grinding device 11 about the vertical axis Z of the Unit 11 takes place.
  • the plate-shaped feed path is particularly advantageous Workpieces 20, an actuatable switch 55 or a similar control means are arranged, which notifies the electronic control unit 34 of the supply of a plate-shaped workpiece 20, as a result of which the control unit 34 can emit corresponding delay signals or control pulses in order, for example, to lift or lift the piston unit 17, 18 to control the lowering of the grinding shoe 19 in order to start grinding or lifting the grinding belt exactly at the desired location without damaging the workpiece or not grinding completely.
  • the button 22, 23, which is connected to the profile edge 21, is deflected.
  • the deflection takes place in the direction of the axes X, Y, corresponding to the curved course of the profiled edge 21, and thus there is a constant displacement of the grinding shoe 19 with respect to the curved and profiled edge 21 and at the same time there is a superimposition of a pivoting movement of the grinding shoe 19 about the vertical axis Z, thereby always ewaehrologicalt g, d ass grinding belt 14 and sanding shoe are always aligned tangentially to the 19 course of the curving of the profiled edge 21st In other words, the grinding belt 14 always works in the longitudinal direction of the wood fiber.
  • the button 22, 23 is moved back to its "zero position" after completion of the grinding process either with the aid of a spring means or other suitable devices, as a result of which both the device 4 and the device 11 are moved back to their original position and thus are ready to be controlled again in order to subject the subsequent plate-shaped workpiece 20 to the grinding process.
  • the grinding device With the grinding device according to the invention, it has become possible to propose a device which for the first time can carry out automatic grinding, using a grinding belt, of continuously fed and moving workpieces with profiled and curved edges. It will be possible for the first time on the so far to dispense with the necessary finishing by hand of these profiled and curved edges.
  • the sanding process always takes place in the ideal way in the direction of the wood grain, and it is not necessary to adjust the sanding device to the workpiece, taking into account the profile profile. This is done automatically.
  • the device according to the invention can also be installed as an additional unit in already existing machines which are used for machining plate-shaped workpieces.
  • machines which are used for machining plate-shaped workpieces.
  • Double end profiles and especially edge banding machines are considered.
  • control signals for certain types of profiles can be recorded and stored, and in this case the grinding device can also be controlled directly via the recorded control signals without a button.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

Belt grinding device for machining curved, profiled edges of platelike workpieces, having a probe which controls the movement of the grinding device, this grinding device being arranged to be pivotable about a vertical axis and displaceable in a horizontal plane.

Description

Schleifeinrichtung zur Bearbeitung von plattenfoermigen Werkstuecken mit profilierten und geschweiften KantenGrinding device for processing plate-shaped workpieces with profiled and curved edges

Die vorstehende Erfindung betrifft eine Bandschleifeinrichtung zum Bearbeiten plattenfoermiger Werkstuecke, mit profilierten und geschweiften Kanten.The above invention relates to a belt grinding device for processing plate-shaped workpieces, with profiled and curved edges.

Es ist bekannt, dass hauptsaechlich fuer die Herstellung von Moebeltueren, plattenfoermige Werkstuecke mit profilierten Kanten Verwendung finden. Sie weisen oft an der Oberseite, die das ptattenfoermige Werkstueck begrenzt, nicht nur eine profilierte Kante aufweist, sondern diese Kante weist zusaetzlich eine geschweifte Form auf.It is known that mainly for the manufacture of furniture doors, plate-shaped workpieces with profiled edges are used. They often have not only a profiled edge on the upper side, which delimits the plate-shaped workpiece, but this edge also has a curved shape.

Plattenfoermige Werkstuecke dieser Art, werden meist in Vollholz hergestellt, oder aber unter Verwendung von Spanplatten, die mit einem Furnier beschichtet sind, dessen Maserung meistens in Laengsrichtung der Moebeltuer verlaeuft.Panel-like workpieces of this type are usually made of solid wood, or using chipboard, which is coated with a veneer, the grain of which mostly runs in the longitudinal direction of the furniture door.

Es ist weiter bekannt, dass diese an ihrem Umfang profilierten Moebeltueren vor dem Lackiervorgang, aeusserst sorgfaeltig geschliffen werden muessen, um ein einwandfreies Ergebnis bei der anschl iessenden Lackierung zu erzielen. Es ist dem Fachmann auch bekannt, dass mit einer Zunahme der Schleifqualitaet, eine erhebliche Einsparung an Lackierkosten erzielbar ist.It is also known that these furniture doors, which are profiled on their circumference, have to be sanded very carefully before the painting process in order to achieve a perfect result in the subsequent painting. It is also known to the person skilled in the art that with an increase in the grinding quality, a considerable saving in painting costs can be achieved.

I n der Vergangenheit wurden zum Bearbeiten ebener Flaechen plattenfoermiger Werkstuecke, sowie fuer profilierte aber nicht geschweifte Kanten, die sich parallel zur Holzmaserung erstrecken, zahlreiche Schleifverfahren vorgeschlagen, und, die mit diesen bekannten Einrichtungen erzielbaren Ergebnisse koennen auch als zufriedenstellend angesehen werden.In the past, numerous grinding methods have been proposed for processing flat surfaces of plate-shaped workpieces, as well as for profiled but not curved edges which extend parallel to the wood grain, and the results which can be achieved with these known devices can also be regarded as satisfactory.

Bis heute wurden aber noch keine Verfahren und Vorrichrungen vorgeschlagen, mit denen es moeglich waere, automatisch und maschinell, sowie in Richtung der Holzmaserung auch Profile mit geschweiftem Verlauf zu bearbeiten. Bis heute war es stets erforderlich, den Putz- und Schleifvorgang dieser geschweiften oder gekruemmten Profile, in muehevoller Handarbeit, unter Einsatz zahlreicher Arbeitskraefte durchzufuehren.To date, however, no methods and devices have been proposed with which it would be possible to process profiles with a curved course, automatically and mechanically, and in the direction of the wood grain. To date, it has always been necessary to carry out the cleaning and grinding process of these curved or curved profiles in painstaking manual work using a large number of workers.

Aufgabe der vorstehenden Erfindung ist es, eine Bandschleifeinrichtung vorzuschlagen, mit der die Nachteile des Standes der Technik behoben werden koennen, indem eine Vorrichtung vorgeschlagen wird, mit der es erstmalig moeglich wird, automatisch und im Durchlauf, sowie in Richtung der Holzmaserung, profilierte und geschweifte oder gekruemmte Kanten plattenfoermiger Werkstuecke, die z.B. in der Moebelindustrie Verwendung finden, zu schleifen, und dabei eine derartig hohe Bearbeitungsgenauigkeit zu erzielen, dass auch proflierte und geschweifte Kanten plattenfoermiger Werkstuecke, die mit einem aeussert duennen Furnier beschichtet sind, geschliffen werden koennen, um ohne jegliche Handarbeit, nach dem Schleifvorgang sofort in den lackiert zu werden.The object of the above invention is to propose a belt grinding device with which the disadvantages of the prior art can be remedied by proposing a device with which it becomes possible for the first time, automatically and in the course, as well as in the direction of the wood grain, profiled and curved or crooked Sanding edges of plate-like workpieces, which are used, for example, in the furniture industry, and to achieve such high processing accuracy that even shaped and curved edges of plate-like workpieces, which are coated with an extremely thin veneer, can be sanded without any manual work to be painted in the immediately after the grinding process.

Mit t der erfindungsgemaessen Vorrichtung koennen, dank ihrer schnellen Ansprechbarkeit und Genauigkeit auch geschweifte Profile, auf denen eine oder mehrere Lackschichten aufgetragen wurden, automatisch geschliffen werden.With the device according to the invention, thanks to its quick response and accuracy, even curved profiles on which one or more layers of lacquer have been applied can be sanded automatically.

Diese Aufgaben werden durch die erfindungsgemaesse Vorrichtung geloest, die sich dadurch kennzeichnet, dass eine Bandschleifeihrichtung, in einer Horizontalebene, entsprechend der Form des Profiles gesteuert, bewegbar angeordnet ist und, dass die Bandschleifeinrichtung ferner, entsprechend dem Verlauf der Profilschweifung, um eine, senkrecht zur Horizontalebene angeordnete Achse (2) verschwenkbar gesteuert ist.These tasks are solved by the device according to the invention, which is characterized in that a belt grinding direction is movably arranged in a horizontal plane, controlled in accordance with the shape of the profile, and that the belt grinding device furthermore, according to the course of the profile curve, by one, perpendicular to Horizontal plane axis (2) is pivotally controlled.

Mit t diesen Massnahmen wird es moeglich, dass die Schleifeinrichtung, entsprechend der Kruemmung oder Schweifung des Profiles gefuehrt wird und, dass aufgrund der Durchfuehrung einer Schwenkbewegung um eine senkrechte Achse, ein Nachfahren der Bandschleifeinheit und tangentiales Ausrichten gegenueber der Schweigung des Profiles gewaehrleistet ist, wodurch das Schleifband stets in Richtung der Holzmaserung arbeitet und ein bestmoeqlicher Schleifeffekt erzielt wird.With these measures it is possible that the grinding device is guided according to the curvature or curvature of the profile and that due to the execution of a swiveling movement about a vertical axis, a follow-up of the belt grinding unit and tangential alignment with respect to the silence of the profile is ensured, whereby the sanding belt always works in the direction of the wood grain the best possible grinding effect is achieved.

Weitere Merkmale der Erfindung, koennen der nun folgenden Beschreibung, den Zeichnungen und den Unteranspruechen entnommen werden.Further features of the invention can be found in the following description, the drawings and the subclaims.

Der Erfindungsgegenstand wird nun genauer anhand eines Ausfuehrungsbeispieles beschrieben und in den beigefuegten Zeichnungen dargestellt.

  • Fig. 1 zeigt schematisch einen Laengsschnitt durch die erfindungsgemaesse Bandschleifvorrichtung.
  • Fig. 1a zeigt ein Detail des Schleifschuhes in Ansicht entlang der Linie II-II der Fig. 1.
  • Fig. 2 zeigt die Bandschleifeinrichtung teilweise im Schnitt, sowie in einer Ansicht, entlang der Linie III-III der Fig. 1.
  • Fig. 3 zeigt eine schematisches Schaltbild der Steuereinrichtungen, die einem Motor, zum Verschieben der Schleifeinrichtung in der Horizontalebene, zugeordnet sind.
  • Fig. 4 zeigt schematisch eine Steuereinrichtungen zur Durchfuehrung einer Drehbewegung der Schleifvorrichtung um die senkrechte Achse.
  • Fig. 4a zeigt das Funktionsprinzip eines bistabiten Tasters.
  • Fig. 5 zeigt schematisch die Verschwenkmoeglichkeit der Schleifeinrichtung um eine vertikale Drehachse.
  • Fig. 6 zeigt im Schnitt eine weitere zusaetzliche Ausfuehrungsform der Schleifvorrichtung.
  • Fig. 7 - 9 zeigt verschieden Schleifstellungen, die von der Schleifeinrichtung beim Bearbeiten eines plattenfoermigen Werkstueckes mit einem geschweiften Profil, eingenommen werden. Wie besonders der Fig. 1 zu entnehmen ist, ist die Schleifvorrichtung, die gesamthaft mit 1 bezeichnet ist, ueber einem Tansportband 2 angeordnet. Ferner sind dem plattenfoermigen Werkstueck 20 einstellbare Stuetz- und Fuehrungsrollen 3 zugeordnet.
The subject matter of the invention will now be described in more detail with reference to an exemplary embodiment and shown in the accompanying drawings.
  • Fig. 1 shows schematically a longitudinal section through the belt grinding device according to the invention.
  • FIG. 1 a shows a detail of the grinding shoe in a view along the line II-II of FIG. 1.
  • FIG. 2 shows the belt grinding device partly in section, as well as in a view, along the line III-III of FIG. 1.
  • 3 shows a schematic circuit diagram of the control devices which are assigned to a motor for displacing the grinding device in the horizontal plane.
  • Fig. 4 shows schematically a control device for performing a rotary movement of the grinding device about the vertical axis.
  • 4a shows the principle of operation of a bistable button.
  • Fig. 5 shows schematically the ability of the grinding device to pivot about a vertical axis of rotation.
  • Fig. 6 shows in section a further additional embodiment of the grinding device.
  • Fig. 7-9 shows different grinding positions, which of the Grinding device when processing a plate-shaped workpiece with a curved profile. As can be seen particularly from FIG. 1, the grinding device, which is denoted overall by 1, is arranged above a conveyor belt 2. Furthermore, the plate-shaped workpiece 20 is assigned adjustable support and guide rollers 3.

Die Schleifvorrichtung 1 besteht im wesentlichen aus einem Support 4, der verschiebbar von horizontal angeorndeten Parallelfuehrungen 5 getragen wird. Die Fuehrungen 5 sind fest mit dem Maschinengestell (nicht dargestellt) verbunden. Ferner ist am Support 4 eine Praezisionsgewindemutter 6 befestigt. Die Mutter 6 steht mit einer hochgenauen Gewindespindel 7, in vorteilhafter Weise, mit einer Kugelumlaufgewindespindel, in Wirkverbindung.The grinding device 1 essentially consists of a support 4, which is slidably supported by horizontally arranged parallel guides 5. The guides 5 are firmly connected to the machine frame (not shown). Furthermore, a precision threaded nut 6 is attached to the support 4. The nut 6 is operatively connected to a highly precise threaded spindle 7, advantageously with a recirculating ball screw.

Die Gewindespindel 7 ist parallel zu den horizontal angeordneten Fuehrungen 5 angeordnet und mit der Antriebswelle eines streuerbaren Motors 8 verbunden. In vorteilhafter Weise, findet ein bekannter steuerbarer Gleichstrommotor Verwendung, dem z.B. eine aus dem Stand der Technik her bekannte Steuereinrichtung 9 zugeordnet ist. Wird ueber den steuerbaren Motor 8 die Kugelumlaufspindel 7 angetrieben, so kann dem Support 4 eine Translationsbewegung in Richtung der Pfeiles f verliehen werden. Vom Support 4 stehen horizontal angeordnete Arme 10 ab, die einen weiteren Support 11 tragen, der verschwenkbar um eine Vertikalachse z gelagert ist. An seiner Oberseite nimmt der Support 11 einen Lagerbock 12 auf, der eine Umlenkrolle 13 aufnimmt, um die eine Schleifband 14 umlaeuft. Das Schleifband 14 wird ferner um eine Fuehrungsrolle 15 gelenkt, die in senkrechter Richtung verstellbar angeordnet ist, und fener, laeuft das Schleifband 14 um eine Fuehrungsrolle 16, die in waagerechter Richtung verstellbar ist.The threaded spindle 7 is arranged parallel to the horizontally arranged guides 5 and connected to the drive shaft of a spreadable motor 8. A known controllable DC motor is advantageously used, to which, for example, a control device 9 known from the prior art is assigned. If the ball screw 7 is driven by the controllable motor 8, the support 4 can be given a translational movement in the direction of the arrow f. From the support 4 there are horizontally arranged arms 10 which carry a further support 11 which can be pivoted about one Vertical axis z is mounted. On its upper side, the support 11 receives a bearing block 12, which receives a deflection roller 13, around which a grinding belt 14 rotates. The sanding belt 14 is also steered around a guide roller 15 which is arranged to be adjustable in the vertical direction, and also, the sanding belt 14 runs around a guide roller 16 which is adjustable in the horizontal direction.

An seiner Unterseite nimmt der Support 11 einen kleinen Steuerzylinder 17 auf, in vorteilhafter Weise einen steuerbaren Pneumatikzylinder, der ueber seine Kolbenstange 18 mit einem Schleifschuh 19 wirkverbunden ist. Der Schleifschuh 19 weist die Form des zu schleifenden Profiles (im Schnitt gesehen) des plattenfoermigen Werkstueckes 20 auf. Aus der Fig. 1a kann entnommen werden, dass der Schleifschuh 19 trapezfoermige Gestalt aufweist, d.h. dass er sich keilfoermig zum Werkstueck 20 hin verjuengt. Durch diese Massnahme, wird eine einwandfreie Fuehrung des Schleifbandes 14 erreicht, und gleichzeitig besteht die Moeglichkeit, mit er schmalen Vorderseite des Schleifschuhes auch verhaeltnismaessig enge Kurven des Profilverlaufes abzufahren.On its underside, the support 11 receives a small control cylinder 17, advantageously a controllable pneumatic cylinder, which is operatively connected to a grinding shoe 19 via its piston rod 18. The grinding shoe 19 has the shape of the profile to be ground (seen in section) of the plate-shaped workpiece 20. From Fig. 1a it can be seen that the grinding shoe 19 has a trapezoidal shape, i.e. that it tapers wedge-shaped towards workpiece 20. This measure ensures that the grinding belt 14 is properly guided, and at the same time it is possible to use the narrow front of the grinding shoe to also drive relatively tight curves of the profile profile.

Das Werkstueck 20 wird vom Transportband 2 senkrecht zur Zeichnungsebene (Fig. 1) vorwaertsbewegt. Durch die Fuehrungsrollen 3 wird das Werkstueck in einer genau definierten Bezugsstellung gegenueber dem Werkstueck 20 gehalten.The workpiece 20 is moved forward by the conveyor belt 2 perpendicular to the plane of the drawing (FIG. 1). The workpiece is held in a precisely defined reference position with respect to the workpiece 20 by the guide rollers 3.

Unterhalb des Schleifschuhes 19, in Uebereinstimmung mit der aeusseren Kante 21 des plattenfoermigen Werkstueckes 20,ist ein Tastrad 22 angeordnet, das mit einer Steuerstange 23 einer elektronischen, biaxialen Abtast- oder Kopiereinrichtung verbunden ist. Die biaxiale Kopiereinrichtung ist vom Typ CPE und ist in allen ihren technischen Einzelheiten, zusammen mit der elektronischen Datenverarbeitungseinheit und Signalsteuereinrichtung, sowie den entsprechenden elektronischen Verbindungs- oder Anschlussplatten (interfaces), die unbedingt fuer die Verbindung des elektronischen Tasters notwendig sind, aus dem Katalog der Firma Fadis S.p.A. - Divisione Automatismi, mit Sitz in 21048 Solbiate Arno (Italien), zu entnehmen.Below the grinding shoe 19, in accordance with the outer edge 21 of the plate-shaped workpiece 20, there is a feeler wheel 22 which is connected to a control rod 23 of an electronic, biaxial scanning or copying device. The biaxial copying device is of type CPE and is in all its technical details, together with the electronic data processing unit and signal control device, as well as the corresponding electronic connection or connection plates (interfaces), which are absolutely necessary for the connection of the electronic button, from the catalog of Fadis SpA - Divisione Automatismi, based in 21048 Solbiate Arno (Italy).

Diese Firma bietet die beschriebene Abtast- und Steuereinrichtung an und vertreibt diese Geraete auf dem italienischen und internationalen Markt. Es wird daher auf die genaue Beschreibung des Tasters und der zugeordneten Steuereinrichtung verzichtet, da diese Bauteile dem Stand der Technik als bekannt zu entnehmen sind.This company offers the described scanning and control device and sells these devices on the Italian and international market. The exact description of the button and the associated control device is therefore omitted, since these components are known from the prior art.

Aus der Fig. 2 kann entnommen werden, dass die gesamte. Schleifvorrichtung 1 vom Maschinengestell 25 hoehenverstellbar aufgenommen wird. Zu diesem Zweck, ist in vorteilhafter Weise eine im Maschinenbau uebliche Schwalbenschwanzfuehrung 26 vorgesehen, die eine Verschiebung und Einstellung der Bandschleifeinrichtung 1 gegenueber der Bezugsebene des Transportbandes 2 oder des Werkstueckes 20 erlaubt.From Fig. 2 it can be seen that the entire. Grinding device 1 is received by the machine frame 25 in a height-adjustable manner. For this purpose, a dovetail guide 26 common in mechanical engineering is advantageously provided, which allows the belt grinding device 1 to be displaced and adjusted relative to the reference plane of the conveyor belt 2 or of the workpiece 20.

Der Haltearm 10, der mit dem Support 4 wirkverbunden ist und den um die Vertikalachse Z verdrehbaren Support 11 aufnimmt, traegt ferner einen steuerbaren Motor, in vorteilhafter Weise eine Gleichstrommotor 27. Dieser Motor 27 steht ucber ein Reduziergetriebe 28, dessen Ausgangswelle ein Kettenrad 29 aufnimmt, mit einem weiteren Kettenrad 31 ueber eine Kette 30 in Wirkverbindung. Das Kettenrad 31 steht im Inneren des Supportes 11 mit diesem in Wirkverbindung, um somit dem Support 11 eine Schwenkbewegung in Richtung des Pfeiles g (Fig. 2), um die Achse Z, verleihen zu koennen.The holding arm 10, which is operatively connected to the support 4 and receives the support 11 rotatable about the vertical axis Z, also carries a controllable motor, advantageously a direct current motor 27. This motor 27 is located above a reduction gear 28, the output shaft of which receives a chain wheel 29 , with another sprocket 31 via a chain 30 in operative connection. The sprocket 31 is operatively connected to the inside of the support 11 so that the support 11 can be pivoted in the direction of the arrow g (FIG. 2) about the Z axis.

Die Umlenkrolle 13, die das Schleifband 14 aufnimmt, wird von einem Motor 32 (Fig. 2) angetrieben. Aus der Fig. 2 kann ferner die einstellbare, vordere Fuehrungsrolle 15 entnommen werden. Durch das Transportband 2 werden die plattenfoermigen Werkstuecke 20 in Richtung des Pfeiles h bewegt.The deflection roller 13, which receives the grinding belt 14, is driven by a motor 32 (FIG. 2). 2, the adjustable front guide roller 15 can also be seen. The plate-shaped workpieces 20 are moved in the direction of arrow h by the conveyor belt 2.

In Fig. 3 ist schematisch der Steuerschaltkreis fuer den Motor 8 dargestellt. Der Motor 8 ist fuer die Verschiebung der Schleifvorrichtung 4 in einer horizontalen Ebene vorgesehen.In Fig. 3, the control circuit for the motor 8 is shown schematically. The motor 8 is provided for the displacement of the grinding device 4 in a horizontal plane.

Das Tastrad 22 steht mit der Kante 21 des plattenfoermigen Werkstueckes 20 in Beruehrung, und ist an der Tastange 23 der elcktronischen, biaxialen Kopiereinrichtung oder Tasteinrichtung 24 befestigt. Die Signalausgaenge der Abtasteinrichtung 24, stehen ueber eine oder mehrere Leitungen 33 mit einer elektronischen Auswerte- und Steuereinheit 34 in Verbindung (NC-Einheit). Der Ausgang der Steuereinheit 34 steht ueber eine Leitung 35 mit dem Eingang der Steuereinrichtung 9 in Wirkverbindung, und diese Steuereinrichtung 9 ist dem steuerbaren Gleichstrommotor 8 zugeordnet, der die Gewindespindel 7 antreibt, die mit der Gewindemutter 6 wirkverbunden ist, die wiederum am Support 4 befestigt ist. Parallel zur Steuereinheit 34, kann ferner ein Aufzeichnungsgeraet 36 vorgesehen sein, mit dem z.B. die vom elektronischen, biaxialen Taster 24, beim Abfahren eines Werkstueckes 20 abgegebenen Signale, gespeichert werden. Diese Signale werden z.B. ueber eine Magnetbandkassette oder ein aehnliches Aufzeichnungsgeraet aufgezeichnet, und fuer die spaeter noch genauer er laeuterte Zwecke verwendet.The feeler wheel 22 is in contact with the edge 21 of the plate-shaped workpiece 20 and is fastened to the feeler rod 23 of the electronic, biaxial copying device or feeler device 24. The signal outputs of the scanning device 24 are connected via one or more lines 33 to an electronic evaluation and control unit 34 (NC unit). The output of the control unit 34 is via a Line 35 with the input of the control device 9 in operative connection, and this control device 9 is assigned to the controllable DC motor 8, which drives the threaded spindle 7, which is operatively connected to the threaded nut 6, which in turn is attached to the support 4. Parallel to the control unit 34, a recording device 36 can also be provided, with which, for example, the signals emitted by the electronic, biaxial button 24 when a workpiece 20 is moved are stored. These signals are recorded, for example, by means of a magnetic tape cassette or a similar recording device, and are used for the purposes explained later.

Die Gewindemutter 6 steht ferner mit dem elektronischen, biaxialen Taster 24 ueber eine Leitung 36 in Wirkverbindung, um somit, unter Zuhilfenahme bekannter Uebertragungsmittel, der Abtasteinrichtung die genaue, tatsaechl iche Stellung der Gewindemutter 6 mitzuteilen.The threaded nut 6 is also operatively connected to the electronic, biaxial button 24 via a line 36, so that, with the aid of known transmission means, the scanning device is informed of the exact, actual position of the threaded nut 6.

Der Fig. 4 kann entnommen werden, dass ein weiterer Ausgang des elektronischen, biaxialen Tasters 24, ueber eine Leitung 37 mit einem weiteren Eingang der elektronischen Steuer- und Verarbeitungseinheit 34 verbunden ist. Das entsprechende Ausgangssingal der Einheit 34 wird ueber eine Leitung 38 dem steuerbaren Motor 27 zugefuehrt, dessen Antriebswelle, unter Zwischenschaltung eines Reduktionsgetriebes 28, mit dem Kettenrad 29 in Wirkverbindung steht. Das Kettenrad 29 nimmt die Kette 30 auf, die mit dem Kettenrad 31 wirkverbunden ist, das am Support 11 befestigt ist, der um die Vertikalachse Z veschwenkbar gelagert ist. Koachsial zur Antriebswelle des Motors 27, ist ferner z.B. einDrehpotentiometer 39 vorgesehen, das entsprechend seiner Winkekstellung ein Signal abgibt, das ueber eine Leitung 40 als effektiver Winkelstellungswert an die elektronische Steuereinheit 34 weitergeleitet wird. Die Steuereinheit 34 verwendet dieses Signal als Bezugssignal fuer die Stellung der Welle .des Motores 27, die das Kettenrad 29 aufnimmt, und somit einen Bezugswert fuer die Winkelstellung der Schleifeinheit 11 darstellt, die ueber den Antrieb des Kettenrades 31 um die vertikale Achse Z verschwenkbar ist.It can be seen from FIG. 4 that a further output of the electronic, biaxial button 24 is connected via a line 37 to a further input of the electronic control and processing unit 34. The corresponding output signal of the unit 34 is fed via a line 38 to the controllable motor 27, the drive shaft of which, with the interposition of a reduction gear 28, is operatively connected to the chain wheel 29. The sprocket 29 takes the chain 30, which is operatively connected to the sprocket 31, which is attached to the support 11, which is pivotally mounted about the vertical axis Z. Coaxial to the drive shaft of the motor 27, a rotary potentiometer 39 is also provided, for example, which, in accordance with its angular position, emits a signal which is forwarded to the electronic control unit 34 via a line 40 as an effective angular position value. The control unit 34 uses this signal as a reference signal for the position of the shaft 27 of the motor 27, which receives the chain wheel 29, and thus represents a reference value for the angular position of the grinding unit 11, which can be pivoted about the vertical axis Z via the drive of the chain wheel 31 .

Aus dem Schema gemaess Fig. 4a kann entnommen werden, dass bei Ausschwenken der Taststange 23, der biaxialen Tastvorrichtung 24, in Richtung der Achse X (Bewegung, die der Darstellung gemaess Fig. 3, entspricht), Signale zur Betaetigung des Motors 8 abgegegen werden. Gemaess Fig. 4, d.h. bei Ausschwenken der Stange 23 des Tasters 24 in Richtung der Achse Y, werden Signale abgegeben, die ein Ansteuern des Motors 27 zur Folge haben. Sinn und Zweck der Betaetigung der steuerbaren Motoren 8 und 27 wird noch genauer im Anschluss beschrieben.From the diagram according to FIG. 4a it can be seen that when the push rod 23, the biaxial pushing device 24, is pivoted out in the direction of the axis X (movement which corresponds to the illustration according to FIG. 3), signals for actuating the motor 8 are counteracted . According to Fig. 4, i.e. when the rod 23 of the button 24 is pivoted out in the direction of the Y axis, signals are emitted which result in the motor 27 being activated. The purpose of the operation of controllable motors 8 and 27 is described in more detail below.

In Fig. 5 ist nochmals schematisch die Verschwenkmoeglichkeit der Schleifvorrichtung 11 um die Achse Z dargestellt; ferner kann dieser Darstellung das Kettenrad 29 entnommen werden, das fuer den Antrieb der Kette 30 vorgesehen ist, die mit dem Kettenrad 31 in Wirkverbindung steht, und zur Verschwenkung der Schleifvorrichtung 11 (dargestellt durch das Schleifband 14), um die vertikale Achse Z, dient.FIG. 5 again shows schematically the possibility of pivoting the grinding device 11 about the axis Z; furthermore, the sprocket 29 can be seen from this illustration is provided for driving the chain 30, which is operatively connected to the chain wheel 31, and for pivoting the grinding device 11 (represented by the grinding belt 14) about the vertical axis Z.

Zur Bearbeitung an Profilen, wie in Fig. 6 dargestellt, die aufgrund ihres komplexen Auffbaues nicht vollstaendig von der Bandschleifeinheit 11 bearbeitet werden koennen, besteht die Moegiichkeit, die erfindungsgemaesse Maschine durch eine zusaetzliche Schleifrolle 50 oder eine aehnliche Einrichtung zu ergaenzen. Die Schleifrolle 50 weist ein Gegenprofil 52 auf, die dem zu schleifenden Profilstueck 53 entspricht. Die Schleifrolle 50 beseht in vorteilhafter Weise aus elastischem, abrasivem Material und wird ueber eine vertikal angeordnete welle 51, in Drehbewegung versetzt und ist ebenfalls gegenueber dem Profilstueck 53 einstellbar. Natuerlich kann auch eine um eine horizontal angeordnete Welle rotierende Schleifwalze oder - scheibe Verwendung finden. Auch die Rolle 50 kann in ihrer Stellung gegenueber dem Werkstueck 20, unter Zuhilfenahme des Tasters 23, 24, der auf die steuerbare Motoren 8, 27 einwirkt, verstellt werden.For processing on profiles, as shown in FIG. 6, which due to their complex structure cannot be completely processed by the belt grinding unit 11, there is the possibility of supplementing the machine according to the invention by an additional grinding roller 50 or a similar device. The grinding roller 50 has a counter profile 52 which corresponds to the profile piece 53 to be ground. The grinding roller 50 is advantageously made of elastic, abrasive material and is rotated by means of a vertically arranged shaft 51 and is also adjustable relative to the profile piece 53. A grinding roller or disc rotating about a horizontally arranged shaft can of course also be used. The position of the roller 50 relative to the workpiece 20 can also be adjusted with the aid of the button 23, 24, which acts on the controllable motors 8, 27.

Die Arbeitsweise der erfindungsgemaessen Vorrichtung wird nun anhand der Fig. 7, 8 und 9 genauer beschrieben.The operation of the device according to the invention will now be described in more detail with reference to FIGS. 7, 8 and 9.

Zu Beginn der Bearbeitung, wird das zu schleifende Werkstueck 20, das durch das Transportband 2 der Schleifvorrichtung zugefuehrt wird, unter Zuhilfenahme der Fuehrungsrollen 54 (Fig. 7 - 8), die auf der dem Taster 24 gegenueberliegenden Seite des Transportbandes 2 angeordnet sind,eingestellt. Die Fuehrungsrollen 54 sind entsprechend den Abmessungen des Werkstueckes 20 einstellbar. Bei Beginn des Abtastvorganges, befindet sich der Taster 22, 23, 24 in einer "Null-Stellung", d.h., durch die Tasteinheit 24 werden keinerlei Steuersignale abgegeben, da sich der Taster genau im Schnittpunkt der Achsen X, Y (Fig. 4a) befindet. Waehrend der weiteren Vorschubbewegung des Werkstueckes 20, wie dies in Fig. 7 dargestellt ist, erfolgt eine Auslenkung des Tasters 23 in Richtung der Achsen X und Y, und es erfolgt ueber die Tasteinheit 24 eine Abgabe von Steuersignalen, entsprechend der Auslenkung des Tasters, und diese Signale werden den Steuerkreisen gemaess Fig. 3und 4 zugefuehrt, wodurch ein gesteuerter Antrieb des Motores 8 (Verschiebung des Supports 4 auf den horizontalen Fuehrungen 5) und ferner, unter Zuhilfenahme des steuerbaren Motores 27, ein Verschwenken der Schleifvorrichtung 11 um die Vertikalachse Z der Einheit 11 erfolgt. Damit wird erzielt, dass der Schleifschuh 19 sowohl eine Translationsbewegung als auch eine Schwenkbewegung ausfuehrt, und somit stets genau gegenueber dem zu schleifenden Profilverlauf positioniert und ausgerichtet wird und Schleifband und Schleifschuh stets tangential zum geschweiften Profil ausgerichtet sind, wodurch der Schleifvorgang genau in Richtung der Holzmaserung erfolgt. Mit besonderem Vorteil ist im Vorschubweg der plattenfoermigen Werkstuecke 20, ein betaetigbarer Schalter 55 oder ein aehnliches Steuermittel angeordnet, das der elektronischen Steuereinheit 34 die Zufuehrung eines plattenfoermigen Werkstueckes 20 mitteilt, wodurch von der Steuereinheit 34 entsprechende Verzoegerungssignale oder Steuerimpulse abgegeben werden koennen, um z.B. ueber die Kolbeneinheit 17, 18 das Anheben bzw. das Absenken des Schleifschuhes 19 zu steuern, um mit dem Schleifbeginn oder dem Abheben des Schleifbandes genau an der gewuenschten Stelle zu beginnen, ohne dabei das Werkstueck zu beschaedigen oder nicht vollstaendig zu schleifen.At the beginning of the machining, the workpiece 20 to be ground, which is fed through the conveyor belt 2 to the grinding device, with the aid of the guide rollers 54 (Fig. 7-8), which are arranged on the opposite side of the button 24 of the conveyor belt 2, set. The guide rollers 54 are adjustable according to the dimensions of the workpiece 20. At the start of the scanning process, the push buttons 22, 23, 24 are in a "zero position", ie no control signals are emitted by the push button unit 24, since the push button is exactly at the intersection of the axes X, Y (FIG. 4 a) located. During the further feed movement of the workpiece 20, as shown in FIG. 7, the pushbutton 23 is deflected in the direction of the axes X and Y, and control signals are emitted via the pushbutton unit 24, corresponding to the deflection of the pushbutton, and 3 and 4, these signals are fed to the control circuits, as a result of which a controlled drive of the motor 8 (displacement of the support 4 on the horizontal guides 5) and, with the aid of the controllable motor 27, a pivoting of the grinding device 11 about the vertical axis Z of the Unit 11 takes place. This ensures that the grinding shoe 19 performs both a translational movement and a pivoting movement, and is therefore always positioned and aligned precisely with respect to the profile profile to be ground, and the grinding belt and grinding shoe are always aligned tangentially to the curved profile, as a result of which the grinding process is precisely in the direction of the wood grain he follows. The plate-shaped feed path is particularly advantageous Workpieces 20, an actuatable switch 55 or a similar control means are arranged, which notifies the electronic control unit 34 of the supply of a plate-shaped workpiece 20, as a result of which the control unit 34 can emit corresponding delay signals or control pulses in order, for example, to lift or lift the piston unit 17, 18 to control the lowering of the grinding shoe 19 in order to start grinding or lifting the grinding belt exactly at the desired location without damaging the workpiece or not grinding completely.

Waehrend das Werkstueck 20 vom Transportband 2 durch die Maschine in Pfeilrichtung gefoerdert wird, erfolgt ein Auslenken des Tasters 22, 23, der mit der Profilkante 21 in Verbindung steht. Die Auslenkung erfolgt in Richtung der Achsen X, Y, entsprechend dem geschweiften Verlauf der profilierten Kante 21, und somit erfolgt eine staendige Verschiebung des Schleifschuhes 19 gegenueber der geschweiften und profilierten Kante 21 und gleichzeitig erfolgt eine Ueberlagerung einer Schwenkbewegung des Schleifschuhes 19 um die vertikale Achse Z, wodurch stets gewaehrleistet wird, dass Schleifband 14 und Schleifschuh 19 stets tangential zum Verlauf der Schweifung der profilierten Kante 21 ausgerichtet sind. Mit anderen Worten ausgedrucckt, das Schleifband 14 arbeitet stets in Laengsrichtung der Holzfaser.While the workpiece 20 is being conveyed by the conveyor belt 2 through the machine in the direction of the arrow, the button 22, 23, which is connected to the profile edge 21, is deflected. The deflection takes place in the direction of the axes X, Y, corresponding to the curved course of the profiled edge 21, and thus there is a constant displacement of the grinding shoe 19 with respect to the curved and profiled edge 21 and at the same time there is a superimposition of a pivoting movement of the grinding shoe 19 about the vertical axis Z, thereby always ewaehrleistet g, d ass grinding belt 14 and sanding shoe are always aligned tangentially to the 19 course of the curving of the profiled edge 21st In other words, the grinding belt 14 always works in the longitudinal direction of the wood fiber.

Vlaehrend in der Fig. 7 der Anfang des Schleifvorganges dargestellt ist, erfolgt gemaess Fig. 8 eine Bearbeitung durch den Schleifschuh 19 und das Schleifband 14, ungefaehr in der Mitte des plattenfoermigen Werkstueckes, wogegen in der Fig. 9 die Stellung der Schleifvorrichtung 1 dargestellt ist, die diese am Ende des Schleifvorganges des geschweiften Profiles einnimmt. Nachdem das plattenfoermige Werkstueck 20 aus dem Wirkungsbereich des Steuerschalters 55 ausgetreten ist, werden durch die Steuereinheit 34 (NC-Geraet) die erforderlichen Steuerimpulse z.B. zum Anheben des Schleifschuhes 19 abgegeben, und im Anschluss. ist der Schleifschuh 10 wiederum bereit, das naechste zugefuehrte Werkstueck zu bearbeiten. In vorteilhafter Weise, wird der Taster 22, 23 nach Beendigung des Schleifvorganges entweder unter Zuhilfenahme eines Federmittels oder anderer geeigneter Einrichtungen, in seine "Null-Stellung" zurueckbewegt, wodurch sowohl die Einrichtung 4 als auch die Einrichtung 11 in ihre Ursprungsstellung zurueckverfahren werden und somit erneut bereit sind, wieder angesteuert zu werden, um das nachfolgende plattenfoermige Werkstueck 20 dem Schleifvorgang zu unterziehen.The beginning of the grinding process in FIG. 7 8, processing is carried out by the grinding shoe 19 and the grinding belt 14, approximately in the middle of the plate-shaped workpiece, whereas in FIG. 9 the position of the grinding device 1 is shown, which this is at the end of the grinding process of the curved profile occupies. After the plate-shaped workpiece 20 has emerged from the control switch 55, the control unit 34 (NC device) emits the necessary control pulses, for example for lifting the grinding shoe 19, and then . the grinding shoe 10 is again ready to process the next workpiece. Advantageously, the button 22, 23 is moved back to its "zero position" after completion of the grinding process either with the aid of a spring means or other suitable devices, as a result of which both the device 4 and the device 11 are moved back to their original position and thus are ready to be controlled again in order to subject the subsequent plate-shaped workpiece 20 to the grinding process.

Mit der erfindungsgemaessen Schleifeinrichtung ist es moeglich geworden, eine Vorrichtung vorzuschlagen, die zum ersten Mal ein automatisches Schleifen, unter Verwendung eines Schleifbandes, von staendig zugefuehrten und sich bewegenden Werkstuecken mit profilierten und geschweiften Kanten, durchzufuehren. Es wird zum ersten Mal moeglich, auf die bisher notwendige Endbearbeitung von Hand dieser profilierten und geschweiften Kanten zu verzichten. Der Schleifvorgang erfolgt stets in idealer Weise in Richtung der Holzmaserung, und es ist nicht erforderlich, die Schleifeinrichtung auf das Werkstueck, unter Beruecksichtigung des Profilverlaufes einzustellen. Dies erfolgt automatisch.With the grinding device according to the invention, it has become possible to propose a device which for the first time can carry out automatic grinding, using a grinding belt, of continuously fed and moving workpieces with profiled and curved edges. It will be possible for the first time on the so far to dispense with the necessary finishing by hand of these profiled and curved edges. The sanding process always takes place in the ideal way in the direction of the wood grain, and it is not necessary to adjust the sanding device to the workpiece, taking into account the profile profile. This is done automatically.

Die erfindungsgemaesse Einrichtung kann ferner als Zusatzeinheit in bereits bestehende Maschinen eingebaut werden, die zur Bearbeitung von plattenfoermigen Werkstuecken verwendet werden. Hier kommen z.B. Doppelendprofile und vor allem Kantenanleimmaschinen in Betracht.The device according to the invention can also be installed as an additional unit in already existing machines which are used for machining plate-shaped workpieces. Here come e.g. Double end profiles and especially edge banding machines are considered.

Unter Verwendung einer Magnetbandaufzeichnungseinrichtung, koennen Steuersignale fuer bestimmte Profilarten aufgezeichnet und gespeichert werden, und die Schleifeinrichtung kann in diesem Falle auch direkt ueber die aufgezeichneten Steuersignale ohne Taster gesteuert werden.Using a magnetic tape recorder, control signals for certain types of profiles can be recorded and stored, and in this case the grinding device can also be controlled directly via the recorded control signals without a button.

Claims (9)

1. Schleifeinrichtung, zum Bearbeiten von plattenfoermigen Werkstuecken, mit profilierten und geschweiften Kanten, dadurch gekennzeichnet dass Antriebs- und Steuereinrichtungen (6, 7, 8, 9, 34) zum gesteuerten Verschieben der Schleifeinrichtung (11) in einer horizontalen Ebene, entsprechend der Form des Profiles (21) vorgesehen sind und, dass die Bandschleifeinrichtung (11) ferner Antriebs- und Steuereinrichtungen zur Durchfuehrung einer gesteuerten Schwenkbewegung entsprechend dem Verlauf der Profilschweifung (21), um eine senkrecht zur Horizontalebene angeordnete Achse (Z) aufweist.1. Grinding device, for processing plate-shaped workpieces, with profiled and curved edges, characterized in that drive and control devices (6, 7, 8, 9, 34) for controlled displacement of the grinding device (11) in a horizontal plane, according to the shape of the profile (21) are provided and that the belt grinding device (11) furthermore has drive and control devices for carrying out a controlled pivoting movement in accordance with the course of the profile curve (21) about an axis (Z) arranged perpendicular to the horizontal plane. 2. Schleifeinrichtung, nach Patentanspruch 1, dadurch gekennzeichnet, dass sie aus einem Support (4) besteht, der verschiebbar auf parallelen, horizontalen Fuehrungen (5) gelagert ist, die mit dem Maschinengestell verbunden sind, dass mit diesem Support (4) eine hochgenaue Gewindemutter (6) verbunden ist, mit der eine Praezisionsgewindespindel (7) in Wirkverbindung steht, die zwischen den horizontal angeorndeten Fuehrungen (5) vorgesehen ist, und mit der Antriebswelle eines steuerbaren (9) Antriebsmotores (8) verbunden ist.2. Grinding device, according to claim 1, characterized in that it consists of a support (4) which is slidably mounted on parallel, horizontal guides (5) which are connected to the machine frame, that with this support (4) a highly accurate Threaded nut (6) is connected, with which a precision threaded spindle (7) is operatively connected, which is provided between the horizontally arranged guides (5), and is connected to the drive shaft of a controllable (9) drive motor (8). 3. Schleifeinrichtung, nach Patentanspruch 1, dadurch gekennzeichnet, dass ein das Schleifband (14) aufnehmender Support (11) von Haltearmen aufgenommen und um eine vertikale Achse (Z) verschwenkbar gelagert ist, dass diese Haltearme (10) mit dem horizontal verschiebbaren Support (11) verbunden sind, und, dass dem schwenkbaren Support Antriebsmittel (29, 30, 31) zugeordnet sind, die von einem steuerbaren Motor (27), zur Durchfuehrung einer gesteuerten Schwenkbewegung, antreibbar sind.3. Grinding device, according to claim 1, characterized in that a support (11) receiving the grinding belt (14) is held by holding arms and is pivotably mounted about a vertical axis (Z), that these holding arms (10) with the horizontally displaceable support ( 11) are connected, and that the pivotable support is assigned drive means (29, 30, 31) which can be driven by a controllable motor (27) for carrying out a controlled pivoting movement. 4. Schleifeinrichtung, nach Patentanspruch 1, dadurch gekennzeichnet, dass dem Schleifband (14) und dem Transportband (2) der plattenfoermigen - Werkstuecke (20), Fuehrungsrollen (3, 54) und Anschlagrollen zugeordnet sind, die in vertikaler und horizontaler Richtung einstellbar sind.4. Grinding device, according to claim 1, characterized in that the grinding belt (14) and the conveyor belt (2) of the plate-shaped workpieces (20), guide rollers (3, 54) and stop rollers are assigned, which are adjustable in the vertical and horizontal directions . 5. Schleifeinrichtung, nach Patentanspruch 1, dadurch gekennzeichnet, dass unterhalb des Schleifschuhes (19) eine Tasteinrichtung (22, 23, 24) vorgesehen ist, die mit der profilierten und geschweiften Kante (21) des plattenfoermigen Werkstueckes (20) in Wirkverbindung gehalteen ist und, dass diese Tasteinrichtung (22, 23, 24) Bestandteil einer an sich bekannten elektronischen, biaxialen Tast- und Kopiereinrichtung (24, 34) ist.5. Grinding device, according to claim 1, characterized in that below the grinding shoe (19) there is provided a sensing device (22, 23, 24) which is held in operative connection with the profiled and curved edge (21) of the plate-shaped workpiece (20) and that this touch device (22, 23, 24) is part of an electronic, biaxial touch and copy device (24, 34) known per se. 6. Schleifeinrichtung, nach Patentanspruch 1 - 5, dadurch gekennzeichnet, dass der Schleifschuh (19) Keil- oder Trapezform aufweist, die sich der zu schleifenden Kante (21) des Werkstueckes (20) hin verjuengt.6. Grinding device, according to claim 1-5, characterized in that the grinding shoe (19) has a wedge or trapezoidal shape that tapers the edge to be ground (21) of the workpiece (20). 7. Schleifeinrichtung, nach Patentanspruch 1, dadurch gekennzeichnet, dass die Signalausgaenge (33) der Kopier- und Abtasteinrichtung (24), mit einer an sich bekannten elektronischen Steuer- und Datenverarbeitungseinrichtung (34) in Verbindung stehen, von der wenigstens ein Ausgang ueber eine Steuerleitung (35) mit dem Eingang der Steuervorrichtung (9) des Motors (8) verbunden ist, der die Gewindespindel (7) fuer die horizontale Verschiebung der Schleifeinrichtung (4) antreibt und, dass mindestens ein weiterer Ausgang der Steuereinheit (34) ueber eine Leitung (38) mit der Steuervorrichtung des Motors (27) verbunden ist, der die Verschwenkung der Schleifeinrichtung (11) um die vertikale Achse (Z) vornimmt.7. Grinding device according to claim 1, characterized in that the signal outputs (33) of the copying and scanning device (24) with a known electronic control and data processing device (34) in Connection are made, of which at least one output is connected via a control line (35) to the input of the control device (9) of the motor (8) which drives the threaded spindle (7) for the horizontal displacement of the grinding device (4) and that at least a further output of the control unit (34) is connected via a line (38) to the control device of the motor (27) which pivots the grinding device (11) about the vertical axis (Z). 8. Schleifeinrichtung, nach Patnentanspruch 9, dadurch gekennzeichnet, dass mit der elektronischen Steuereinheit (34), sowie dem biaxialen Abtastgeraet (24) eine Signalaufzeichnungseinrichtung (36), z.B. eine Magnetbandkassette, zum Aufzeichnen der einem bestimmten Profilverlauf (21) zugeordneten Steuersignale, verbunden ist.8. Grinding device according to patent claim 9, characterized in that with the electronic control unit (34) and the biaxial scanning device (24) a signal recording device (36), e.g. a magnetic tape cassette for recording the control signals associated with a specific profile profile (21) is connected. 9. Schleifeinrichtung, nach Patentanspruch 1, dadurch gekennzeichnet, dass sowohl der, in einer horizontalen Ebene bewegbar angeordnete Support (4), als auch der um die Z-Achse verschwenkbare Support (11), ueber bekannte Geraete (39) mit dem biaxialen Taster (24) und/oder der elektronischen Steuereinheit (34), zur Uebertragung der tatsaechlichen Stellung dieser Supporte (4,11), wirkverbunden sind.9. Grinding device, according to claim 1, characterized in that both the support (4), which is arranged to be movable in a horizontal plane, and the support (11) which can be pivoted about the Z axis, via known devices (39) with the biaxial button (24) and / or the electronic control unit (34), for transmitting the actual position of these supports (4, 11), are operatively connected.
EP82104456A 1981-05-26 1982-05-21 Grinding device for machining platelike workpieces with profiled and curved edges Withdrawn EP0065769A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2197281 1981-05-26
IT21972/81A IT1137230B (en) 1981-05-26 1981-05-26 BELT SANDING UNIT, FOR PANELS WITH PROFILED AND SHAPED EDGES

Publications (2)

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EP0065769A2 true EP0065769A2 (en) 1982-12-01
EP0065769A3 EP0065769A3 (en) 1983-04-06

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EP82104456A Withdrawn EP0065769A3 (en) 1981-05-26 1982-05-21 Grinding device for machining platelike workpieces with profiled and curved edges

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EP (1) EP0065769A3 (en)
JP (1) JPS584348A (en)
ES (1) ES8306627A1 (en)
IT (1) IT1137230B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0455142A2 (en) * 1990-04-25 1991-11-06 Reko Maschinenbau Gmbh Profil grinding machine
DE4241293A1 (en) * 1992-12-08 1994-06-09 Stahl Sm Maschf Belt grinding machine with machining position on frame - has machining set with drive motor on support, movable under workpiece pressure w.r.t. machine frame
CN107627180A (en) * 2017-09-19 2018-01-26 东莞艾法精密机械有限公司 A kind of corner sander
CN110405578A (en) * 2019-08-01 2019-11-05 常熟市益诚精密机械有限公司 Grinding device is used in a kind of processing of Computerized flat knitting machine accessory
CN112296804A (en) * 2020-10-14 2021-02-02 李宁 Decorate and grind paper-back edition with wooden cabinet corner and put
CN113458929A (en) * 2021-07-13 2021-10-01 京东方科技集团股份有限公司 Be applied to processing equipment, apron and display device of apron internal surface
CN116967907A (en) * 2023-09-21 2023-10-31 山西一建集团有限公司 Surface impurity treatment device for aluminum-magnesium-manganese wallboard construction

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JPS60167756A (en) * 1984-02-08 1985-08-31 Shigeru Hasegawa Sander for woodworking
JPS60157158U (en) * 1984-03-30 1985-10-19 長谷川　茂 wood sander
JPS60157157U (en) * 1984-03-30 1985-10-19 長谷川　茂 wood sander
CN111941228B (en) * 2020-07-07 2022-02-08 湖南工程学院 Hand-held type furniture board limit end burr treatment device

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DE499283C (en) * 1927-07-19 1930-06-10 Herzogenrather Glaswerke Biche Device for grinding facet surfaces with an even generatrix and an odd guideline
AT269455B (en) * 1964-08-18 1969-03-25 Zuckermann Kg Maschf Copying machine for molded parts made of wood
DE1813841A1 (en) * 1967-12-18 1969-07-10 Wst Patenter Ab Arrangement on profile trimming devices with a back and forth grinding surface
DE6905417U (en) * 1969-02-10 1969-08-07 Richard Staehle Kg Maschb Fa SANDING SHOE WITH CERAMIC PRESSURE PLATE, ESPECIALLY FOR BELT SANDING MACHINES.
DE1652386A1 (en) * 1966-02-25 1971-09-02 Zuckermann Kg Maschf Copy machine for length processing of work pieces made of wood
DE2122990A1 (en) * 1970-05-04 1971-11-25 Libbey-Owens-Ford Co., Toledo, Ohio (V.StA.) Device for processing the edges of glass panes or the like
US3779294A (en) * 1972-03-27 1973-12-18 Mill And Timber Products Ltd Board edging machine
DE2332397A1 (en) * 1972-06-27 1974-01-10 Zuckermann Kg Maschf MACHINE FOR SANDING THE PROFILED SEAT SURFACE OF SEAT PLATES AND DGL. WOODEN FURNITURE PARTS

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE499283C (en) * 1927-07-19 1930-06-10 Herzogenrather Glaswerke Biche Device for grinding facet surfaces with an even generatrix and an odd guideline
AT269455B (en) * 1964-08-18 1969-03-25 Zuckermann Kg Maschf Copying machine for molded parts made of wood
DE1652386A1 (en) * 1966-02-25 1971-09-02 Zuckermann Kg Maschf Copy machine for length processing of work pieces made of wood
DE1813841A1 (en) * 1967-12-18 1969-07-10 Wst Patenter Ab Arrangement on profile trimming devices with a back and forth grinding surface
DE6905417U (en) * 1969-02-10 1969-08-07 Richard Staehle Kg Maschb Fa SANDING SHOE WITH CERAMIC PRESSURE PLATE, ESPECIALLY FOR BELT SANDING MACHINES.
DE2122990A1 (en) * 1970-05-04 1971-11-25 Libbey-Owens-Ford Co., Toledo, Ohio (V.StA.) Device for processing the edges of glass panes or the like
US3779294A (en) * 1972-03-27 1973-12-18 Mill And Timber Products Ltd Board edging machine
DE2332397A1 (en) * 1972-06-27 1974-01-10 Zuckermann Kg Maschf MACHINE FOR SANDING THE PROFILED SEAT SURFACE OF SEAT PLATES AND DGL. WOODEN FURNITURE PARTS

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0455142A2 (en) * 1990-04-25 1991-11-06 Reko Maschinenbau Gmbh Profil grinding machine
EP0455142A3 (en) * 1990-04-25 1992-04-29 Reko Maschinenbau Gmbh Profil grinding machine
DE4241293A1 (en) * 1992-12-08 1994-06-09 Stahl Sm Maschf Belt grinding machine with machining position on frame - has machining set with drive motor on support, movable under workpiece pressure w.r.t. machine frame
DE4241293C3 (en) * 1992-12-08 1999-12-16 Stahl Sm Maschf Machine for the surface processing of workpieces, in particular belt grinding machines
CN107627180A (en) * 2017-09-19 2018-01-26 东莞艾法精密机械有限公司 A kind of corner sander
CN110405578A (en) * 2019-08-01 2019-11-05 常熟市益诚精密机械有限公司 Grinding device is used in a kind of processing of Computerized flat knitting machine accessory
CN112296804A (en) * 2020-10-14 2021-02-02 李宁 Decorate and grind paper-back edition with wooden cabinet corner and put
CN113458929A (en) * 2021-07-13 2021-10-01 京东方科技集团股份有限公司 Be applied to processing equipment, apron and display device of apron internal surface
CN113458929B (en) * 2021-07-13 2022-12-27 京东方科技集团股份有限公司 Be applied to processing equipment, apron and display device of apron internal surface
CN116967907A (en) * 2023-09-21 2023-10-31 山西一建集团有限公司 Surface impurity treatment device for aluminum-magnesium-manganese wallboard construction
CN116967907B (en) * 2023-09-21 2023-12-19 山西一建集团有限公司 Surface impurity treatment device for aluminum-magnesium-manganese wallboard construction

Also Published As

Publication number Publication date
EP0065769A3 (en) 1983-04-06
IT8121972A0 (en) 1981-05-26
ES513329A0 (en) 1983-06-01
JPS584348A (en) 1983-01-11
ES8306627A1 (en) 1983-06-01
IT1137230B (en) 1986-09-03

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