EP0406219B1 - Dispositif pour découper des pièces, en particulier des pièces en bois - Google Patents

Dispositif pour découper des pièces, en particulier des pièces en bois Download PDF

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Publication number
EP0406219B1
EP0406219B1 EP19900890189 EP90890189A EP0406219B1 EP 0406219 B1 EP0406219 B1 EP 0406219B1 EP 19900890189 EP19900890189 EP 19900890189 EP 90890189 A EP90890189 A EP 90890189A EP 0406219 B1 EP0406219 B1 EP 0406219B1
Authority
EP
European Patent Office
Prior art keywords
cutting
monitor
workpiece
line
image
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
EP19900890189
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German (de)
English (en)
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EP0406219A1 (fr
Inventor
Hans Payr
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Individual
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Individual
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Filing date
Publication date
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Application filed by Individual filed Critical Individual
Publication of EP0406219A1 publication Critical patent/EP0406219A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B1/00—Methods for subdividing trunks or logs essentially involving sawing
    • B27B1/007—Methods for subdividing trunks or logs essentially involving sawing taking into account geometric properties of the trunks or logs to be sawn, e.g. curvature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B31/00—Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines
    • B27B31/06—Adjusting equipment, e.g. using optical projection
    • 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
    • Y10T83/00—Cutting
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/536—Movement of work controlled

Definitions

  • the invention relates to a device for cutting workpieces, in particular wood, wherein a tool for cutting the workpiece, for example a band saw or a frame saw, and the workpiece are movable relative to one another along a predetermined movement path for performing the cutting work, and wherein the workpiece a carrier is set so as to be adjustable transversely to the parting plane, with an image sensor, preferably a television camera, which detects the workpiece.
  • a tool for cutting the workpiece for example a band saw or a frame saw
  • the workpiece are movable relative to one another along a predetermined movement path for performing the cutting work
  • the workpiece a carrier is set so as to be adjustable transversely to the parting plane, with an image sensor, preferably a television camera, which detects the workpiece.
  • a further disadvantage of the known measures is that the operator must constantly observe the wood or other workpiece to be cut, which requires constant head movements, which are very tiring.
  • the operator must be in the immediate vicinity of the workpiece (wood) to be cut so that he can even set up (adjust) the workpiece to be cut.
  • a device for measuring, setting and feeding tree trunks to a frame saw is known.
  • three television cameras are mounted in such a way that they record the tree trunk to be fed to the frame saw from above and supply its outline shape data to a computer which controls a rotating device assigned to the trunk carriage for the tree trunk lying thereon in such a way that the tree trunk is related the cutting plane is aligned as cheaply as possible.
  • a similar device relates to US-A-4 458 567, in which two cameras are provided laterally above a tree trunk, the tree trunk being to be oriented in such a way that the images of edge lines captured by the cameras are essentially mirror images of one another.
  • the invention has for its object a simple and to provide a reliable device of the type mentioned, which does not have the disadvantages described above.
  • the operator can observe on the monitor how he adjusts the workpiece relative to the cutting tool for optimal alignment of the cutting plane. It is therefore no longer necessary for the operator to see the workpiece itself and the light or laser mark generated on it. Therefore, the device according to the invention can also be used to work over larger distances, i.e. the operator no longer has to be in the immediate vicinity of the workpiece, but can also work in other rooms or departments.
  • the image recorder is a television camera, it being recommended that the monitor be a television screen.
  • the device according to the invention is not limited to a particular cutting tool, rather it can be provided that the cutting tool is a band saw, or that the cutting tool acts in several planes, for example a gang saw, and that the meh on the screen Other dividing planes, in particular the planes in which the saws of the gang saw operate, symbolizing lines are provided.
  • the device according to the invention can also be used in connection with a circular saw or a re-cutting circular saw.
  • At least one further line on the monitor which can be adjusted transversely to the line symbolizing the dividing plane, is provided and that the further line can be set at a distance from the line symbolizing the first distribution plane, which Distance corresponds to the distance of a second parting plane from the first parting plane.
  • This embodiment offers the operator the possibility of setting up the cut already during the first cut in such a way that the second cut can also be optimally made if a workpiece with a certain width is to be produced.
  • this embodiment offers the possibility of recognizing whether the desired workpiece can be produced from the workpiece to be cut.
  • This embodiment can also be used for a prism cut or for the production of wood according to the list.
  • the monitor on the control panel of the device is arranged in a position which can be seen by the operator sitting there.
  • the line (s) is (are) a (rubber) cord attached to the monitor on the housing of the monitor or a rod.
  • the at least one line can be a line generated electronically on the monitor.
  • the line on the monitor can also be a line attached to the monitor with a pen (for example a fiber pen).
  • the outline contour of the cross section of the new workpiece or several such workpieces produced from the workpiece by cutting is depicted on the monitor.
  • This embodiment has proven particularly useful in connection with an embodiment in which at least two lines are arranged on the monitor, at least one of which is adjustable.
  • Another embodiment of the invention provides that the image recorder or the camera is mounted on the cutting tool or on the frame of the same at an altitude that lies above the workpiece to be cut. This gives a particularly good overview, which is particularly advantageous for machining conical workpieces (logs).
  • a practical embodiment of the invention consists in that the at least one line symbolizing the plane of division on the monitor for adjusting the device can be adjusted to a position which corresponds to the image of the cutting plane on the monitor.
  • the cutting tool is arranged in a stationary manner and the workpiece can be moved on a transport carriage relative to the cutting tool.
  • the cutting device is a band saw 1 and the workpiece 7 to be cut, a log, is fixed to a band saw car 2.
  • the band saw carriage 2 can be adjusted in the direction of the double arrow 11 so that the workpiece 7 can be aligned with the band saw 1.
  • the workpiece 7 is moved on the band saw carriage 2 in the direction of the double arrow 10 towards the band saw 1.
  • a camera 4 is adjustably mounted as an image sensor in the cutting plane.
  • the camera 4 should not touch the cutting tool or a part of the cutting tool, since this would result in disturbing vibrations.
  • monitor 5 Opposite the operator on the control panel 3 is a monitor 5 which, in the case of the camera 4 being designed as a television camera, will be designed as a television screen.
  • Fig. 2 From the representation of Fig. 2 it can be seen that the camera 4 is arranged in the vicinity of the band saw 1 so that it looks obliquely from above on the workpiece 7, that is, it is mounted at a height above the workpiece to be cut 7 lies so that the viewing angle 9 covers the entire workpiece and the band saw carriage 2 which can be moved on rails 8.
  • Fig. 3 shows the image generated on the monitor 5 of the band saw carriage 2 and the workpiece 7 (round timber).
  • Line 6 can be a simple rod, which is arranged on monitor 5 in an adjustable manner, or it can also be a rubber ring or a line generated with a pen on the screen. However, it is preferred that line 6 is generated electronically in monitor 5.
  • the line 6 symbolizes the level 6 '(Fig. 1) in which the band saw 1 acts.
  • the line 6 can be adjusted on the monitor 5, so that the line 6 in the dividing plane 6 'can be aligned accordingly when the camera 4 and / or the band saw 1 is reassembled.
  • the image on the monitor 5 is shown again schematically. It can be seen that by adjusting the band saw carriage 2 in the direction of the double arrow 11, the cutting plane 6 'symbolized by the line 6 on the monitor 5 can be aligned with the workpiece 7 to be cut so that an optimal cutting is achieved. This is important, for example, when processing logs for the first time to remove rinds, as unnecessary waste (rinds that are too thick) should be avoided.
  • a further line 12 is provided on monitor 5, which line can be adjusted mechanically or in the grid of the monitor using a program provided for this purpose (double arrow 13).
  • the distance of the line 12 from the zero line 6 can be set, for example, to the distance which corresponds to the width of a workpiece to be produced from the workpiece 7.
  • This embodiment is particularly suitable for a prism cut or for the cutting of logs into wood according to the list.
  • FIG. 6 finally shows an embodiment with a zero line 6 and a plurality of movable lines 15. This embodiment is preferably used for frame saws.
  • FIG. 6 it is also indicated that an image symbolizing the outline shape of the workpiece to be produced, a rectangle in the exemplary embodiment shown, can be generated on the monitor 5 so that the operator can determine on the monitor 5 whether he is removing this workpiece from the raw workpiece 7 can manufacture at all. If this is confirmed after checking on the monitor 5, then he can align the workpiece 7, for example by adjusting the band saw carriage 2 in the direction of the double arrow 11 with respect to the zero line 6, in such a way that the most favorable possible cutting guidance for the first and for the subsequent cuts is ensured is.
  • FIG. 7 to 11 schematically show monitors with images as they are obtained when the camera 4 is arranged as shown in Fig. 2, above the workpiece to be cut (e.g. the tree trunk 7).
  • FIG. 7 first shows the two lines 6 and 12 (as in FIG. 5) and their alignment lines 6 'and 12', respectively.
  • the distance between the zero line 6 and the adjustable line 12 is set to "20.0 cm", this value being shown at 16 on the monitor.
  • the alignment lines 6 'and 12' start from the points 17, 18, in which the lines 6 and 12 intersect the outline of the tree trunk 7 above.
  • FIG. 7 shows the alignment of a "band saw on the left
  • FIG. 8 shows the analogous case for a "band saw on the right”.
  • FIGS. 9 to 11 show correspondingly corresponding to FIG. 7 Images that occur when using frame saws (FIG. 9), double band saws and frame saws (FIG. 10) or with trimming circular saws (FIG. 11) when the camera 4 is arranged above the workpiece.
  • the camera 4 can also be equipped with a zoom lens. This embodiment allows the zoom setting to be changed (if necessary automatically) in such a way that the dimension (e.g. the diameter) of the workpiece 7 is always shown on the screen 5 regardless of the distance from the lens of the camera 4.
  • FIGS. 12 and 13 Examples of the design of the electronic part of the device according to the invention are shown in FIGS. 12 and 13. These are explained below:
  • a microprocessor unit 31 takes over data from the PC or central computer 39 via an interface 38 and controls the motor 34 for the zoom adjustment of the zoom lens 30 of the camera 4 via a driver stage 32.
  • the motor 34 is, for example, a GS synchronous or Stepper motor.
  • the actual value feedback to the microprocessor unit takes place via the transmitter 33, which can be a potentiometer, pulse transmitter or the like.
  • the data for various line or dot marks and alphanumeric characters are stored or stored in the image memory 35.
  • the address counter 36 is used to read out the image memory for display on the monitor 5 via the D / A converter 37 '.
  • a possibly provided analog-digital converter 37 '' is used for object detection, measurement, selective zoom adjustment, etc.
  • the control 40 shown in FIG. 12 is used to control the movements of two separating devices 41 and 42 via their drives 43 and 44. Similar drives are provided for the two separating devices (not shown) acting in directions perpendicular to the separating devices 41, 42, the cutting planes of which are symbolized by the lines 45, 47.
  • the position of the lines 45, 46, 47 and 48 on the monitor 5 is set to the desired position using the keyboard 49 while observing the monitor 5, on which an image 7 'of the workpiece 7 is visible.
  • the setpoints specified in this way are passed on via the controller 40 via a position control 5 to the adjusting drives 43, 44 of the separating devices 41, 42 and the separating devices 41, 42 are thus tracked.
  • the device according to the invention is used in frame saws or similar cutting tools, during the operation of which a lot of dust and wood pieces are produced, it is advisable to mount the camera 4 away from the cutting tool.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)

Claims (10)

  1. Dispositif de découpage de pièces (7), en particulier de bois, dans lequel un outil (1) de découpage de la pièce (7), par exemple une scie à ruban ou une scie alternative, et la pièce (7) peuvent se déplacer l'un par rapport à l'autre, le long d'une trajectoire (flèche 10) prédéterminée, pour exécuter le travail de découpage et dans lequel la pièce (7) est fixée sur un support (2) avec possibilité de réglage perpendiculairement au plan de coupe (6'), dispositif comportant un système de prise de vue (4), de préférence une caméra de télévision, qui surveille la pièce (7), caractérisé par le fait que le système de prise de vues (4) qui surveille au moins la face frontale de la pièce (7) côté attaque ou côté dégagement est monté dans le plan de coupe (6') ou dans l'un des plans de coupe, dans le cas d'un outil de découpage à plusieurs plans de coupe, par le fait que le système de prise de vues (4) est connecté à un moniteur (5), de préférence un écran de télévision, sur lequel est reproduite une image d'au moins la face frontale de la pièce (7), côté attaque ou côté dégagement, tournée vers le système de prise de vues et par le fait qu'il est prévu sur le moniteur (5) une ligne (6) qui symbolise le plan (6') dans lequel travaille l'outil (1).
  2. Dispositif selon la revendication 1, dans lequel l'outil de découpage, par exemple une scie alternative, agit dans plusieurs plans, caractérisé par le fait qu'il est prévu sur l'écran (5) plusieurs lignes (6, 15) qui symbolisent les différents plans de coupe (6'), en particulier les plans dans lesquels agissent les lames de la scie alternative.
  3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait qu'il est en outre prévu sur le moniteur (5) au moins une ligne (12, 15) supplémentaire réglable dans la direction perpendiculaire à la ligne (6) qui symbolise le plan de coupe (6') et par le fait que la ligne supplémentaire (12, 15) peut être réglée à une distance donnée de la première ligne (6) symbolisant le plan de coupe (6), distance qui correspond à la distance qui sépare un second plan de coupe du premier (6').
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que le moniteur (5) est disposé sur le pupitre de commande (3) du dispositif dans une position visible de l'utilisateur placé devant ledit pupitre.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que la (les) ligne(s) (6, 12, 15) sur le moniteur (5) est (sont) constituée(s) par des cordons (de caoutchouc) ou des tiges fixés sur le boîtier du moniteur (5) et appliqués contre l'écran.
  6. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que la ligne (6) au nombre d'au moins une, est générée sur le moniteur (5) par des moyens électroniques.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait que le contour (14) de la section de la nouvelle pièce ou de plusieurs des pièces à réaliser par découpe de la pièce (7) est représenté sur le moniteur.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé par le fait que la ligne (6) au nombre d'au moins une qui symbolise le plan de coupe (6') sur le moniteur (5) peut être amenée dans une position qui coïncide avec le plan de coupe (6') sur le moniteur (5) à des fins de réglage du dispositif.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé par le fait que le système de prise de vues est monté au voisinage de l'outil de découpage (1) ou côté attaque de la pièce (7).
  10. Dispositif selon l'une des revendications 1 à 8, caractérisé par le fait que le système de prise de vues (4) est monté du côté dégagement de la pièce (7).
EP19900890189 1989-06-26 1990-06-22 Dispositif pour découper des pièces, en particulier des pièces en bois Expired - Lifetime EP0406219B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1558/89 1989-06-26
AT0155889A AT393986B (de) 1989-06-26 1989-06-26 Vorrichtung zum zerteilen von werkstuecken, insbesondere von holz

Publications (2)

Publication Number Publication Date
EP0406219A1 EP0406219A1 (fr) 1991-01-02
EP0406219B1 true EP0406219B1 (fr) 1993-08-18

Family

ID=3515993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900890189 Expired - Lifetime EP0406219B1 (fr) 1989-06-26 1990-06-22 Dispositif pour découper des pièces, en particulier des pièces en bois

Country Status (6)

Country Link
US (1) US5251141A (fr)
EP (1) EP0406219B1 (fr)
AT (2) AT393986B (fr)
CA (1) CA2019278C (fr)
DE (1) DE59002370D1 (fr)
ES (1) ES2043352T3 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6219585B1 (en) * 1994-07-21 2001-04-17 Silvatech Corporation Three dimensional log scanning device for a log positioning and saw system
DE69514972T2 (de) * 1994-09-19 2000-07-20 Totani Giken Kogyo Kk Maschine zum Herstellen von Beuteln
FR2726781A1 (fr) * 1994-11-15 1996-05-15 Logsys Installation pour le tronconnage et/ou l'usinage de grumes
DE19852170C1 (de) * 1998-11-12 2000-02-24 Mohr Adolf Maschf Vorrichtung zum Schneiden von gestapeltem, blattförmigem Gut
US6929043B2 (en) * 2001-07-24 2005-08-16 Valley Machine Works Ltd. Optimized board edger and method of operation thereof
US7156730B1 (en) * 2003-07-21 2007-01-02 Fmc Technologies, Inc. Method and system for achieving acceptable process time
US7163038B2 (en) * 2004-03-01 2007-01-16 Globe Machine Manufacturing Company Systems and methods for end squaring and dividing elongated materials
WO2008143861A1 (fr) * 2007-05-15 2008-11-27 Hudson Sharp Machine Co. Procédé de fabrication et d'inspection de sacs
US20080302226A1 (en) * 2007-06-07 2008-12-11 Credo Technology Corporation Power tool having imaging device and display device
DE102011102997B4 (de) * 2011-05-24 2016-07-14 Paul Wassmer Verfahren zur Ansteuerung einer Sägevorrichtung und korrespondierende Sägevorrichtung
CN109968456B (zh) * 2019-04-12 2020-11-27 山东工业职业学院 一种坡楞木板的自动纵切***

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1918599C3 (de) * 1969-04-12 1973-11-08 Fritz 6731 Helmbach Seeber Vorrichtung zur Aufbereitung von Rund holz
SE7610080L (sv) * 1976-09-10 1978-03-11 Kockums Ind Ab Sett och anordning for injustering av en stock till optimalt lege framfor en sag
FI64760C (fi) * 1981-05-29 1984-01-10 Ahlstroem Oy Foerfarande foer inriktning av en stock
US4471823A (en) * 1982-08-10 1984-09-18 Npi New Products Investment Ab Log processing positioning means
EP0188421A4 (fr) * 1983-09-09 1986-09-15 Halse Norman James Installation pour decouper des carcasses.
DE3601523C1 (de) * 1986-01-20 1987-07-16 Manfred Richter Verfahren zur Positionierung und Vermessung von Werkstuecken auf Bearbeitungsstrassen
US4977805A (en) * 1986-04-10 1990-12-18 Corley Manufacturing Company Edging apparatus
US4879659A (en) * 1987-11-24 1989-11-07 Bowlin William P Log processing systems
GB2221187B (en) * 1988-05-17 1993-02-24 Amada Co Ltd Device and method for measuring shape and dimensions of workpiece in sawing machine,and device for automatically adjusting position of saw blade guide
US4941100A (en) * 1988-11-30 1990-07-10 Mcfarlane Arthur M G Automatic edger saw

Also Published As

Publication number Publication date
US5251141A (en) 1993-10-05
AT393986B (de) 1992-01-10
CA2019278A1 (fr) 1990-12-26
ATA155889A (de) 1991-07-15
ES2043352T3 (es) 1993-12-16
ATE93177T1 (de) 1993-09-15
DE59002370D1 (de) 1993-09-23
CA2019278C (fr) 2000-02-01
EP0406219A1 (fr) 1991-01-02

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