EP0625407B1 - Pongeuse - Google Patents

Pongeuse Download PDF

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Publication number
EP0625407B1
EP0625407B1 EP94107666A EP94107666A EP0625407B1 EP 0625407 B1 EP0625407 B1 EP 0625407B1 EP 94107666 A EP94107666 A EP 94107666A EP 94107666 A EP94107666 A EP 94107666A EP 0625407 B1 EP0625407 B1 EP 0625407B1
Authority
EP
European Patent Office
Prior art keywords
grinding
workpiece
machine according
grinding machine
grinding head
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.)
Expired - Lifetime
Application number
EP94107666A
Other languages
German (de)
English (en)
Other versions
EP0625407A1 (fr
Inventor
Jürgen Dipl.-Ing. Heesemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0625407A1 publication Critical patent/EP0625407A1/fr
Application granted granted Critical
Publication of EP0625407B1 publication Critical patent/EP0625407B1/fr
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • 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
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/06—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving members with limited contact area pressing the belt against the work, e.g. shoes sweeping across the whole area to be ground

Definitions

  • the invention relates to a grinding machine with at least a grinding head with a sanding belt, which is by means of a Pressure bar on a workpiece moved relative to the grinding head is pressed, the grinding head over the surface of the workpiece is designed to be movable.
  • Such grinding machines are in numerous embodiments known. With these belt grinding machines, the workpiece placed on a conveyor belt and under the driven and abrasive belt pressed against the surface of the workpiece promoted through. To achieve an improved grinding result to achieve multiple grinding directions, it is known to Perform cross sanding by the surface of the workpiece ground in two mutually perpendicular directions becomes. Grinding machines that have such a cross grinding in in one pass are necessarily large plants, that require a significant investment.
  • a grinding machine which is specially designed for sanding wooden frames.
  • Wooden frame is positioned on a conveyor belt on which it is movable in the conveying direction.
  • the grinding head is mounted so that it can move across the conveying direction.
  • For Grinding the frame becomes the grinding head at an exit corner positioned and towards the respective rectilinear Frame section moves, either through the Movement of the grinding head on the portal or by an appropriate one Advance of the workpiece.
  • the grinding head is formed by an all-round sanding belt with a pressure shoe, and becomes perpendicular to that for grinding one previously ground frame part standing frame part by 90 ° turned. The execution of several grinding directions on one Frame part itself is not provided.
  • the problem in the prior art is that either a considerable mechanical or a considerable operating effort is required to get a high quality surface finish to achieve.
  • the problem underlying the invention consists of specifying a grinding machine which enables improvements to be made to the problem described.
  • one is to solve the problem posed Grinding machine of the type mentioned in the introduction, that at least one sensor one in the travel of Abrasive head lying edge of the workpiece detects that a controller determines the travel distance according to the detected one Limited edge and reversed the movement of the grinding head, that the pressure beam from a variety of pressure shoe members exists, which are individually switchable into an active position and that the circuit of the pressure shoe members in the operative position can be controlled by the at least one sensor.
  • a moving grinding head over the surface of the Workpiece is movable so that the workpiece even when stationary can stay.
  • the movement of the grinding head over the The surface of the workpiece is automatically controlled.
  • the grinding head is moved from a starting position in one Move the first travel path over the surface of the workpiece.
  • a sensor of the grinding head detects an edge of the Workpiece that lies in the travel of the grinding head and causes a reversal of the movement of the Grinding head, whereupon this preferably automatically another path is guided over the workpiece.
  • the Control is set so that the entire surface of the workpiece is grasped by the grinding head, ie ground becomes.
  • the pressure beam of the grinding machine according to the invention consists in itself, for example, of EP 0 155 380 B1 known manner from a large number of pressure shoe members, which can be switched individually into an active position, preferably the switching of the pressure shoe members into the operative position can be controlled by the at least one sensor. On this way it is possible to get even machining too to be achieved if the grinding head has a longitudinal direction Edge lying in the direction of travel.
  • the type of travel depends on the shape and possibly the grain direction the wooden surface.
  • Travel parallel travel is offset so that ground the surface of the workpiece in parallel grinding tracks becomes.
  • the execution of a cross cut is then easily possible by rotating the grinding head by 90 ° and then perpendicular to the previous travel paths is driven over the workpiece in parallel paths.
  • the grinding head can expediently be rotated by that the grinding head on an X-Y traversing device an axis of rotation perpendicular to the workpiece receiving plane is pivotally attached.
  • the sensor recognizing the edges of the workpiece can be by parallel to the pressure bar on the leading or trailing edge arranged sensor strips of the grinding head. These can take into account the travel speed of the grinding head the end of the workpiece in the direction of travel recognize and make the reversal, the arrangement the sensor strips on the leading and trailing edge allows that move the grinding head forwards and backwards over the workpiece can.
  • the Height-adjustable grinding head attached.
  • the Grinding head equipped with at least one distance sensor is, it is possible that the grinding head changes follows the distance, for example also with curved ones Workpieces allow a perfect grinding result.
  • the pressure bar is vertical a spherical to the direction of movement of the grinding belt Has curvature because of the resulting linear Uniform grinding processing even with bulges is possible.
  • the workpiece in the grinding machine according to the invention can also be moved in principle, it is preferred that the workpiece receiving plane through a stationary workpiece table is formed, which is preferably a holding device for the stationary mounting of the workpiece in the workpiece receiving plane having.
  • Figure 1 shows a rectangular workpiece table 1, the long one Edges of guide rails 2 are limited.
  • a portal 3 in the longitudinal direction of the table movable.
  • a support arm 4 in the longitudinal direction of the portal 3, that is perpendicular to the longitudinal axis 5 of the workpiece table 1, movably mounted.
  • a Grinding head 6 attached on the support arm 4 .
  • the movable portal 3 and the on the bracket 3 movable arm 4 form a conventional X-Y traversing device 3, 4.
  • the grinding head 6 is on the support arm 4 around a swivel joint 7 perpendicular to the X-Y plane pivotable.
  • Figure 1 shows a in the solid lines first position of the grinding head 6 and in dashed lines a second position of the grinding head pivoted through 90 ° 6.
  • FIG. 1 shows 6 in the representations of the grinding head schematically indicated the longitudinal extent of a pressure bar 8.
  • FIGS. 2 and 3 show that the workpiece table 1 consists of a conventional base 9, on which there is a Workpiece receiving level 10 is located to receive a Workpiece 11 is used.
  • FIG. 4 illustrates the machining of a workpiece 11 a starting position of the grinding head 6, in which this located at an end edge of the workpiece 11 so that the portal 3 moved into an end position with respect to the workpiece 11 by moving the support arm 4 along the portal 3 perpendicular to the longitudinal axis 5 of the workpiece table 1 on a move first travel path 14.
  • the first travel path 14 is ended and the grinding head 6 reversed by lateral displacement so that it is on a to the first travel path 14 parallel travel path 14 'in the reverse direction is moved over the workpiece 11.
  • a subsequent grinding on each other becomes like this parallel grinding tracks in the transverse direction of the workpiece 11 performed until the surface is completely sanded is.
  • the grinding head 6 is then turned 90 ° around the axis of rotation 7 pivots, as is the case by the web 16 in FIG. 4 is indicated. Then the surface is moved by moving the Grinding head 6 perpendicular to parallel travel paths 17, 17 ' to the first traverse paths 14, 14 ', so that a complete cross-cut has been produced.
  • FIGS 5 and 6 illustrate the structure of a grinding head 6 in a first embodiment.
  • a grinding belt over three pulleys 13 two Deflection rollers 13 arranged parallel to the workpiece receiving plane 10 are and take up the pressure bar 8 between them.
  • the pressure bar consists of a A plurality of link pressure shoes 18, individually, for example by electromagnets or by compressed air, in the operative position are controllable.
  • the movement of the grinding head 6 over the workpiece takes place perpendicular to the longitudinal axis 8 'in one Travel axis 19.
  • the Grinding head 6 On a leading edge and a trailing edge Edge with respect to the direction of travel 19 is the Grinding head 6 each provided with a sensor strip 20, 21, on which a plurality of sensors 22 are arranged side by side are.
  • the sensors 22 can be capacitive, for example Sensors that are capable of a wooden workpiece 11 in capacitively detect a distance of a few millimeters.
  • the sensors 22 are expediently individual individual pressure shoes 18 assigned. Detect the sensors 22 that the Grinding head 6 over a lying in the direction of movement 19 Long edge of the workpiece 11 moves, they are no longer on the workpiece 11 hitting link pressure shoes 18 in an ineffective Position, as is known per se, to to avoid grinding the workpiece edges.
  • Figure 7 shows an embodiment of the grinding head 6, at whose effective tool surface 23 in the direction of movement 19 is domed and therefore on a width of the pressure beam 8 narrower line on the workpiece 11 ' takes effect.
  • the workpiece 11 ' is shown arched in FIG. 7.
  • the grinding head 6 follows this curvature in that it is attached to a height-adjustable support arm 4 ', as indicated in Figure 8.
  • the sensors 22 of the leading sensor strip 21 also as distance sensors used or a separate distance sensor is installed, the height adjustment of the grinding head 6 and his Carrier arms 4 'on the portal 3 controls so that the grinding head 6th the curvature contour of the workpiece 11 'can follow.
  • the corresponding sensors 22 are also suitable automatic adjustment to workpieces of different thicknesses bring about.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Disintegrating Or Milling (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Claims (12)

  1. Ponceuse comportant au moins une tête de ponçage (6) munie d'une bande de ponçage (12) qui est appuyée au moyen d'une poutre presseuse (8) sur une pièce d'oeuvre (11, 11') déplacée par rapport à la tête de ponçage (6), laquelle est réalisée déplaçable au-dessus de la surface de la pièce d'oeuvre (11, 11'), caractérisée en ce qu'au moins un capteur (20, 21) détecte un bord (15) de la pièce d'oeuvre (11, 11') s'étendant dans le trajet de déplacement (14, 14'; 17, 17') de la tête de ponçage (6), en ce qu'une commande limite le trajet de déplacement (14, 14' ; 17, 17') en correspondance avec le bord détecté (15) et inverse le mouvement de la tête de ponçage (6), en ce que la poutre presseuse (8) consiste en de multiples organes formant sabots presseurs (18) qui peuvent être placés individuellement dans une position active, et en ce que le passage des organes formant sabots presseurs (18) dans la position active peut être commandé par ledit "au moins un" capteur (20, 21).
  2. Ponceuse selon la revendication 1, caractérisé en ce qu'après l'inversion la commande guide la tête de ponçage (6) sur un autre trajet de déplacement (14', 17') au-dessus de la pièce d'oeuvre.
  3. Ponceuse selon la revendication 2, caractérisée en ce que pour l'inversion la tête de ponçage (6) est décalée sur un trajet de déplacement (14', 17') parallèle au trajet de déplacement terminé (14, 17).
  4. Ponceuse selon la revendication 3, caractérisée en ce qu'après traversée de la surface de la pièce d'oeuvre (11, 11') selon des premiers trajets de déplacement parallèles (14), la tête de ponçage, pivotée de 90 degrés, est déplacée au-dessus de la surface selon des seconds trajets de déplacement (17) parallèles, s'étendant perpendiculairement aux premiers trajets de déplacement (14).
  5. Ponceuse selon l'une des revendications 1 à 4, caractérisée en ce que la tête de ponçage (6) est montée sur un dispositif de déplacement X-Y (3, 4) avec possibilité de pivoter autour d'un axe de rotation (7) se dressant perpendiculairement au plan (10) de réception de la pièce d'oeuvre.
  6. Ponceuse selon l'une des revendications 1 à 5, caractérisée en ce que ledit "au moins un" capteur est constitué de barrettes de capteurs (20, 21) agencées parallèlement à la poutre presseuse (8) sur les bords menant et respectivement mené de la tête de ponçage (6).
  7. Ponceuse selon l'une des revendications 1 à 6, caractérisée en ce que la tête de ponçage (6) est fixée réglable en hauteur.
  8. Ponceuse selon l'une des revendications 1 à 7, caractérisée en ce que la tête de ponçage (6) est équipée d'au moins un capteur de distance.
  9. Ponceuse selon la revendication 7 et 8, caractérisée en ce que le réglage en hauteur de la tête de ponçage (6) s'effectue automatiquement en fonction du signal de mesure du détecteur de distance.
  10. Ponceuse selon l'une des revendications 1 à 9, caractérisée en ce que la poutre presseuse (8) présente un galbe convexe perpendiculairement à la direction de mouvement de la bande de poncage (12).
  11. Ponceuse selon l'une des revendications 1 à 10, caractérisée en ce que le plan de réception de la pièce d'oeuvre (10) est constitué par une table fixe (1) pour les pièces d'oeuvre.
  12. Ponceuse selon l'une des revendications 1 à 11, caractérisée par l'utilisation de capteurs capacitifs (22) dans au moins une barrette de capteurs (20, 21).
EP94107666A 1993-05-18 1994-05-18 Pongeuse Expired - Lifetime EP0625407B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4316588A DE4316588C1 (de) 1993-05-18 1993-05-18 Schleifmaschine mit einem Schleifband
DE4316588 1993-05-18

Publications (2)

Publication Number Publication Date
EP0625407A1 EP0625407A1 (fr) 1994-11-23
EP0625407B1 true EP0625407B1 (fr) 1998-01-21

Family

ID=6488369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94107666A Expired - Lifetime EP0625407B1 (fr) 1993-05-18 1994-05-18 Pongeuse

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EP (1) EP0625407B1 (fr)
AT (1) ATE162447T1 (fr)
DE (2) DE4316588C1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10346202A1 (de) * 2003-08-15 2005-03-17 Supfina Grieshaber Gmbh & Co. Kg Maschine zur Bandschleifbearbeitung von Werkstückoberflächen eines Werkstücks
ITMO20060119A1 (it) * 2006-04-11 2007-10-12 Scm Group Spa Dispositivo di azionamento
CH716746A2 (de) 2019-10-16 2021-04-30 Kuendig Ag Vorrichtung und Verfahren für den seitlich präzis definierten Einsatz von Schleifbändern bei Bandschleifmaschinen im Durchlauf.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480173A1 (fr) * 1980-04-15 1981-10-16 Virelec Dispositif et procede de travail automatique pour machine de polissage des pierres
JPS59115155A (ja) * 1982-12-22 1984-07-03 Takegawa Tekko Kk 木工用枠物研摩機
DE3402104C2 (de) * 1984-01-21 1986-07-17 Karl Heesemann Maschinenfabrik GmbH & Co KG, 4970 Bad Oeynhausen Bandschleifmaschine
DE4214347A1 (de) * 1991-05-07 1992-11-12 Fritz Gebhardt Schleifmaschine

Also Published As

Publication number Publication date
DE59405063D1 (de) 1998-02-26
EP0625407A1 (fr) 1994-11-23
ATE162447T1 (de) 1998-02-15
DE4316588C1 (de) 1994-09-08

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