EP4169684A1 - Procédé d'usinage de panneaux et machine pour la mise en oeuvre d'un tel procédé - Google Patents

Procédé d'usinage de panneaux et machine pour la mise en oeuvre d'un tel procédé Download PDF

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Publication number
EP4169684A1
EP4169684A1 EP22200469.9A EP22200469A EP4169684A1 EP 4169684 A1 EP4169684 A1 EP 4169684A1 EP 22200469 A EP22200469 A EP 22200469A EP 4169684 A1 EP4169684 A1 EP 4169684A1
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EP
European Patent Office
Prior art keywords
panels
working
program
cutting
positioning
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.)
Pending
Application number
EP22200469.9A
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German (de)
English (en)
Inventor
Carlo BIAGI
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.)
SCM Industria SpA
Original Assignee
SCM Industria SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SCM Industria SpA filed Critical SCM Industria SpA
Publication of EP4169684A1 publication Critical patent/EP4169684A1/fr
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes

Definitions

  • the present invention relates to method for machining panels and a machine to carry out such a method.
  • the invention relates to a method of the above type, designed and implemented in particular for performing sequential and complex cuts of panels made of wood, plastic, fiberglass, aluminum, and the like.
  • said machines typically comprise a supporting plane, for supporting a piece to be cut, having a slot, and a circular, rotating cutting blade arranged in said slot, to cut, generally in a through way, wooden panels.
  • the supporting plane comprises a fixed half-plane and a movable half-plane, also called carriage, movable along a direction parallel to said fixed half-plane.
  • the cutting machines according to the prior art also comprise one or more stop bars and abutments, slidingly movable on said abutment bars, able to allow, together with said abutment bar, the correct positioning of the piece to be machined.
  • control panels typically equipped with a display and a central control unit, to allow the operator to move and position the panels to be processed on the cutting machine, to perform the desired cuts.
  • the known solutions allow optimizing and sequencing, by means of programs or applications installed in the central control unit, the cuts on the panels to be worked, so as to minimize the waste of material and save working time.
  • a drawback of the known solutions is that they do not allow the operator to create new and original working programs with respect to the predefined ones already installed or pre-stored in the central control unit of the cutting machines.
  • the operator can only select the desired working program from a series of programs, associated with respective predefined shapes, to perform regular cuts on the panels to be machined. Therefore, the operator can only use these predefined working programs.
  • Another object of the invention is to provide a method for processing panels, which allows the operator to create new working programs with respect to the predefined working programs already present in the central control unit of the cutting machines.
  • a further object of the present invention is to provide the tools necessary for carrying out the method and the apparatuses which carry out this method.
  • said working machine may comprise at least one stop bar and positioning means, movable along said at least one stop bar, said method being characterized in that said step C comprises the following sub-step: C1. providing a graphic indication of the positioning of each of said panels with respect of said at least one stop bar and said positioning means, on the basis of said working program displayed in said step A.
  • said method may comprise the further step: D. recording a personalized working program to be added to said working programs.
  • said step D may comprise the following sub-step: D1. entering the numerical values of one or more positioning parameters or parametric relationships between said numerical operating values for carrying out the different workings of said panels of each working step of said personalized working program.
  • said step D may comprise the following sub-step: D2. associating a graphic positioning indication to each one of said panels of said personalized working program for each working step.
  • said step D may comprise the following sub-step: D3. acquiring images and/or videos associated with each working step during the recording of said personalized working program.
  • said sub-step D3 the acquisition of images may be carried out by means of a mobile device, such as a camera, a tablet, or a smartphone, and the acquired images or videos are stored on a logic control unit of said working machine.
  • a mobile device such as a camera, a tablet, or a smartphone
  • the acquisition of images may be carried out by means of an image acquisition unit, that associates one or more images and/or videos with the steps of the personalized working program.
  • said positioning parameters may be are selected from: the inclination of a cutting blade with respect to a supporting plane and/or the inclination of an engraving with respect to said supporting plane; the height adjustment of said cutting blade; the height adjustment of said engraving blade; the adjustment in translation of said engraving blade along an axis parallel to the rotation axis of said cutting blade; the adjustment in translation of said cutting blade along an axis parallel to the rotation axis of said cutting blade; the adjustment of the engraving thickness on each panel by means of said engraving blade; the position of a parallel guide; the inclination of said stop bar on which each panel to be worked or to be cut with respect to the cutting line of said cutting blade is to be abutted; the position of one or more abutments; a reference angle ⁇ for positioning each panel with respect to said cutting blade.
  • said displaying step A may be carried out by means of a displaying unit, such as a display and the like.
  • each graphic indication may comprise at least one letter and/or at least one number and/or at least one reference mark on the respective panels to facilitate manual rotation of said panels during the working steps of said working program.
  • a working machine for panels wherein said working machine is a cutting machine comprising a supporting plane for supporting said panels, a circular blade for cutting said panels, installed on said supporting plane, at least one stop bar for positioning said panels on said supporting plane, positioning means arranged on said at least one stop bar, for allowing the positioning of said panels with respect to said at least one stop bar, a displaying unit and a logic control unit, connected to said displaying unit and configured to carry out said method according to any one of the preceding claims.
  • a cutting machine comprising a supporting plane for supporting said panels, a circular blade for cutting said panels, installed on said supporting plane, at least one stop bar for positioning said panels on said supporting plane, positioning means arranged on said at least one stop bar, for allowing the positioning of said panels with respect to said at least one stop bar, a displaying unit and a logic control unit, connected to said displaying unit and configured to carry out said method according to any one of the preceding claims.
  • said supporting plane may comprise a fixed half-plane and a mobile half-plane movable parallel to the fixed half-plane, wherein said circular blade is interposed between said fixed half-plane and said mobile half-plane.
  • said working machine may comprise an engraving blade for engraving each panel.
  • said working machine may comprise an acquiring and processing unit, connected to said logic control unit, for acquiring and processing images and/or videos connected with the movement of said panels during the execution of said working programs.
  • It is also object of the present invention a computer program comprising instructions which, when the program is executed by a computer, cause the computer to execute the method steps.
  • It is also object of the present invention a computer readable storage medium comprising instructions which, when executed by a computer, cause the computer to execute the method steps.
  • the working machine wholly indicated with the reference number 1, comprises a supporting plane 2, for supporting a panel P to be cut, having a slot 21, and a circular cutting blade 24, possibly movable through said slot 21 and rotating to cut through said panel P.
  • the working machine 1 is a cutting machine 1.
  • the type of working machine 1 can be different from what is described.
  • the working machine 1 may be a panel drilling or milling machine.
  • the supporting plane 2 comprises a fixed half-plane 22 and a mobile half-plane or carriage 23, movable along the direction indicated by the double-pointed arrow A, parallel to the fixed half-plane 22, so as to remain adjacent to it.
  • the cutting machine 1 comprises a stop bar 31, arranged perpendicularly to said movable half-plane 23.
  • said cutting machine 1 comprises one reference bar 31.
  • the cutting machine 1 can comprise two or more stop bars arranged parallel to each other.
  • Said stop bar 31 can be rotated independently with respect to axes normal to the supporting plane 2, to allow the execution of inclined cuts of said panel P.
  • Positioning means or abutment means 4 are slidably arranged on said stop bar 31, to allow positioning of the panel P to be worked on the stop bar 31 and on the supporting plane 2.
  • said positioning means 4 comprise one or more abutments 41, 42, and 43, able to allow, together with said stop bar 31, the correct positioning of the panel P to be worked on the supporting plane 2 before cutting it by means of the circular cutting blade 24.
  • said abutments 41, 42, and 43 can be motorized.
  • said cutting machine 1 also comprises a control panel or command panel 5, to allow the operator to select and program the appropriate working program to be performed by means of said machine 1.
  • Said control panel 5 is equipped with a supporting rod 51 and a display unit 52, such as a screen or a display, fixed to said supporting rod 51.
  • a display unit 52 such as a screen or a display
  • the display 52 can be moved and positioned manually by the operator (not shown in the figures).
  • said control panel 5 comprises interface means (not shown in the figures), such as a keyboard and the like, to allow the operator to manually enter data and/or information associated with the machining of the panels P.
  • said display 52 is equipped with said interface means.
  • said interface means can be, for example, separated from said machine 1 and connected to said control panel 5.
  • said cutting machine 1 also comprises a control logic unit U operatively connected with said display 52 by means of a telematic communication network (not shown in the figures) such as, for example, an Internet network, Bluetooth, or the like.
  • a telematic communication network such as, for example, an Internet network, Bluetooth, or the like.
  • Said control logic unit U is also programmed in such a way as to execute working programs to carry out complex sequential cuts of the panels P.
  • These working programs can be either "parametric” type programs, in which, once a shape has been chosen and given the main measurements, the installed program automatically calculates the different angles and inclinations of the panels P, making up the complex cut, as well as “non-parametric” programs, in which each operation is fixed on the basis of the numerical values entered by the operator.
  • these applications or programs are designed to create complex geometric shapes, including three-dimensional ones, by carrying out cutting operations on the panels to be worked P, facilitating the operations performed by the operator.
  • said cutting machine 1 can comprise an acquisition and processing unit (not shown in the figures) for acquiring and processing images and/or videos associated with the movement of said panels P1,..., Pn during the execution of the working programs W1,..., Wn.
  • acquisition and processing unit not shown in the figures
  • this acquisition and processing unit can be a software module, capable of acquiring the images taken in the various cutting or machining steps in general (such as drilling or milling, for example) by the operator with an image capture device, such as a camera or smartphone.
  • the images or videos acquired from the processing step can be transmitted to the control logic unit U by means of wireless (e.g., Bluetooth ® ) or wireless transceiver means (not shown in the figures).
  • said cutting machine 1 can be equipped with an optical image acquisition unit (not shown in the figure), comprising for example a video camera (not shown in the figures), which recognizes the movement of the panels P1, ... , Pn by associating it with the various machining steps.
  • an optical image acquisition unit comprising for example a video camera (not shown in the figures), which recognizes the movement of the panels P1, ... , Pn by associating it with the various machining steps.
  • this acquisition unit which can be connected to said control logic unit U, is capable of acquiring and processing the images and/or videos in order to supply the graphic and/or parametric information relating to the orientation of the panels P1, ..., Pn or parts of them to be worked (e.g., cut) in the various machining steps for the composition of the geometric shape to be obtained.
  • the display 52 shows various information to the operator.
  • the display 52 shows a plurality of working programs W1,.., Wn associated with respective geometric shapes S1,.., Sn to be created with suitable cutting operations on said panels P1,..., Pn.
  • said working programs W1,..,Wn are parametric programs selectable by the operator, and said geometric shapes S1,..,Sn are complex two- and three-dimensional geometric shapes. Since these programs are parametric, the user will simply have to enter the measurement of some parameters, so that the program will autonomously calculate the various angles of the profiles of each panel.
  • the program relating to the construction of a wooden pyramid was selected, the user should at least enter the desired measurements of the side of the base and the height of the pyramid, in this way the program would automatically calculate the measurements of the four triangular side panels, as well as the angular cuts of the base and side panels, so as to coincide.
  • the typology of said working programs W1,..,Wn and of said geometric shapes S1,..,Sn can be different from what is described.
  • the working machine 1 will then program the cutting sequences of the panels P1,...,Pn.
  • the selected geometric shape S1,..,Sn is a pyramid S1 and comprises a plurality of faces S11 and a base S12. These portions S11, S12 are made by cutting respective panels P1,..,Pn.
  • the operator can modify the dimensions of this pyramid S1 according to needs.
  • the operator can indicate the dimensions such as, for example, side, base, height, thickness of the faces S11 and of the base S12 to be realized.
  • the portions S11, S12 of the pyramid S1 are graphically displayed together with the dimensions of the same portions S11, S12, previously indicated by the operator.
  • a second area 522 of the display 52 displays the number of panels P1,...,Pn to be machined, necessary to form the pyramid S1.
  • said pyramid S1 comprises four faces S11, and a base S12. Therefore, in order to obtain said pyramid S1, five wooden panels P1,...,Pn are required.
  • Figure 5 shows the value of a cutting angle of the blade 24 for obtaining the face S11 of the pyramid S1, the height of the inclined side as well as an angle of the inclined side.
  • figure 6 shows the dimensions relating to the base S12 of the pyramid S1.
  • the first area 521 of the display 52 shows (on the left portion of the screen 52) the numerical values of respective positioning parameters L1,...,Ln relating to the current state of the cutting machine 1 and (on the right portion of the screen 52) the numerical values of positioning parameters L1,...,Ln suggested by the control logic unit U of the cutting machine 1 for executing the first cut of the working program W1 selected.
  • Said positioning parameters L1,...,Ln can include the height of the cutting blade 24, the inclination angle of the cutting blade 24, which in some embodiments can be variable between -46° to +46°with respect to the vertical, which by definition has an angle of 0°, the height of an engraving blade 25 to engrave each panel P1,...,Pn, the inclination angle of the engraving blade 25, the position of the stop bar 31, the angle of inclination with respect to the cutting line, and the positioning of the abutments 41, 42 and 43 with respect to the stop bar 31.
  • these positioning parameters L1,...,Ln comprise a first parameter relating to the inclination of the blade 24 with respect to the supporting plane 2, which varies according to the height of the panel P1,...,Pn to be machined, a second parameter relating to the position of a parallel guide (not shown in the figures), a third related parameter or to the position of the abutment 41 and a fourth parameter relating to a reference angle ⁇ for the positioning of the panel P1,...,Pn with respect to the cutting blade 24.
  • the electrical axes associated with the inclination of the blade 24, the lifting of the blade 24 as well as the movement of the parallel guide move automatically.
  • the movement of the stop bar 31 is instead of the manual type.
  • a third portion or area 523 of the display 52 shows the indication of the panel P1,..., Pn in machining.
  • the expression "Pyramid - Face 1/5" indicates the machining of the first panel P1.
  • a fourth area 524 of the display 52 shows the indication of the cut T1,...,Tn of said first panel P1 being machined.
  • the expression "Face_Cut1 1/3" indicates the first cut T1 of the first panel P1.
  • the first panel P1 is moved by means of the mobile semi-table 23 after having been positioned against the stop bar 31 and against the abutment 41 to perform the first cut T1 of the first panel P1 by means of the cutting blade 24.
  • the display 52 provides the graphic and parametric indications necessary to sequence the second cut T2 of said first panel P1.
  • the reference bar 31 and, therefore, the first panel P1 are rotated with respect to the position, in which the first cut T1 was made.
  • each graphic indication M1,...,Mn comprises at least one letter and/or at least one number and/or at least one reference sign on the respective panels P1,...,Pn, associated by the working machine 1, to facilitate manual rotation of the panels P1,...,Pn during the machining steps, in order to avoid any manual positioning errors of the same panels P1,...,Pn and, consequently, the waste of material.
  • Figure 9 shows the graphic and parametric indications provided on the display 52 to sequence the third cut T3 of the first panel P1.
  • the panel P1 orientation changes, as is evident from the reversal of the graphic indication M1 "F1", which remains in contact with the stop bar 31, but on the opposite side with respect to the previous cutting step shown in figure 8 . Consequently, for the operator the risk of mistaking the positioning of the piece or of the panel P1 with respect to the stop bar 31, to the abutments 41, 42, and 43, and in particular to the cutting line, is greatly reduced.
  • figures 10-13 show the graphic and parametric indications provided on the display 52 to sequence four cuts T1, T2, T3, and T4 of the fifth panel P5 to obtain the base S12 of the pyramid S1.
  • different graphical indications are used.
  • FIG. 10-13 it is shown how to orient the panel P5 with respect to the working machine 1, the stop bar 31, and the abutments 41, 42, and 43 with respect to the movable half-plane or carriage 23 thanks to the graphic indication M5 " F2" shown directly on the surface of the panel P.
  • the operator can create and memorize customized working programs (parametric or non-parametric) with respect to the working programs W1,...,Wn already present in the control logic unit U of the machine 1.
  • the operator can select, on a fifth area 525 of the display 52, the recording of a customized non-parametric working program W1,...,Wn.
  • the height of the cutting blade 24 for each cut which in the present case is adjusted by 80 mm in height, i.e. the inclination.
  • the cutting blade 24 is inclined by 0 °.
  • the cutting blade 24 and the engraving blade 25 are integral between them in the inclination adjustment, to ensure that the inclination of the two blades 24, 25 is always the same, so as to guarantee an optimal cut of the panels P1,...,Pn.
  • the inclination of the two blades 24, 25 can, however, be managed independently.
  • the engraving blade 25 can be further adjusted in translation along an axis B parallel to its axis of rotation and perpendicular to the cutting direction, so as to always ensure perfect alignment with the cutting blade 24 in a plane of rotation of the blades 24, 25.
  • the same translational adjustment along said axis B can also be performed for the cutting blade 24.
  • the engraving blade 25 is provided with a plurality of teeth with a trapezoidal section.
  • the engraving width on the panel P1,...,Pn can vary according to the thickness of the trapezoidal tooth in correspondence with the engraving plane, which corresponds to the supporting plane 2.
  • a second embodiment provides, on the other hand, an engraving blade 25 of the double blade type (or with a blade divided into two halves) mechanically coupled and with mechanical or assisted adjustment of its engraving width by means of a movement device.
  • Each single blade is equipped with its own teeth, which when coupled produce a corresponding tooth.
  • the operator manually enters the desired numerical values, making use, for example, of pre-set calculation means, for the respective desired denominations T1 ,...,Tn.
  • This insertion operation is performed by the operator for each cutting step.
  • the operator can acquire images of the machining or, and preferably, of the positioning of the panel with respect to the stop bar 31 and to the abutments 41, 42, and 43.
  • Each of the acquired images which can be only one or more than one for each machining-cutting step, can be loaded by the program and associated precisely with the specific machining step.
  • the system autonomously, each time a machining step of a panel or piece of the same is recorded, will associate autonomously acquired images to the created working program.
  • the operator can store the working program W1,...,Wn created, which will be stored in the list of parametric working programs W1,...,Wn for cutting machine 1 previously defined.
  • each cutting step in particular, the position of the blade, the inclination of the blade itself, the position of the stop bar 31, and of the one or more abutments 41, 42, and 43 will be indicated.
  • Each step will be accompanied by the images that may have loaded for each machining-cutting step, or from the video that may have been acquired by the image acquisition unit. In this way, the user can add the programs he/she wants by recalling and playing them when necessary.
  • a first advantage of the method according to the present invention is that of performing complex sequential cuts, to obtain respective complex geometric shapes, on the panels to be worked, facilitating the operations performed by the operator.
  • a further advantage of the method according to the present invention is that of allowing the creation of new working programs with respect to the predefined working programs already present in the central control unit of the cutting machines.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sewage (AREA)
  • Numerical Control (AREA)
EP22200469.9A 2021-10-22 2022-10-10 Procédé d'usinage de panneaux et machine pour la mise en oeuvre d'un tel procédé Pending EP4169684A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000027164A IT202100027164A1 (it) 2021-10-22 2021-10-22 Metodo per la lavorazione di pannelli e macchina per eseguire tale metodo

Publications (1)

Publication Number Publication Date
EP4169684A1 true EP4169684A1 (fr) 2023-04-26

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EP22200469.9A Pending EP4169684A1 (fr) 2021-10-22 2022-10-10 Procédé d'usinage de panneaux et machine pour la mise en oeuvre d'un tel procédé

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EP (1) EP4169684A1 (fr)
IT (1) IT202100027164A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6073058A (en) * 1997-11-15 2000-06-06 Cossen; Edward J Computer generated graphic depiction of manual machining operations
US20050277104A1 (en) * 2002-07-26 2005-12-15 Shinji Morimoto Automatic cutting machine teaching device
AU2010251162A1 (en) * 2009-05-18 2011-12-22 Wilhelm Altendorf Gmbh & Co. Kg Control for a sliding table saw
CN107438494A (zh) * 2015-02-12 2017-12-05 格罗弗治公司 用于激光加工的视觉预览
EP3795313A1 (fr) * 2019-09-23 2021-03-24 SCM Group S.p.A. Procédé de découpe de panneaux et machine pour la mise en oeuvre de ce procédé
EP4005715A1 (fr) * 2020-11-25 2022-06-01 SCM Group S.p.A. Systeme de variation de la surface d'une station de decharge d'une machine d'usinage de panneaux et methode d'utilisation du systeme

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6073058A (en) * 1997-11-15 2000-06-06 Cossen; Edward J Computer generated graphic depiction of manual machining operations
US20050277104A1 (en) * 2002-07-26 2005-12-15 Shinji Morimoto Automatic cutting machine teaching device
AU2010251162A1 (en) * 2009-05-18 2011-12-22 Wilhelm Altendorf Gmbh & Co. Kg Control for a sliding table saw
CN107438494A (zh) * 2015-02-12 2017-12-05 格罗弗治公司 用于激光加工的视觉预览
EP3795313A1 (fr) * 2019-09-23 2021-03-24 SCM Group S.p.A. Procédé de découpe de panneaux et machine pour la mise en oeuvre de ce procédé
EP4005715A1 (fr) * 2020-11-25 2022-06-01 SCM Group S.p.A. Systeme de variation de la surface d'une station de decharge d'une machine d'usinage de panneaux et methode d'utilisation du systeme

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