EP2612736B1 - Cutting machine with variation of the cutting area - Google Patents

Cutting machine with variation of the cutting area Download PDF

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Publication number
EP2612736B1
EP2612736B1 EP12150169.6A EP12150169A EP2612736B1 EP 2612736 B1 EP2612736 B1 EP 2612736B1 EP 12150169 A EP12150169 A EP 12150169A EP 2612736 B1 EP2612736 B1 EP 2612736B1
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EP
European Patent Office
Prior art keywords
cutting
control facility
operating method
blade holder
during
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EP12150169.6A
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German (de)
French (fr)
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EP2612736A1 (en
Inventor
Andreas Haase
Sven Tauchmann
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Siemens AG
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Siemens AG
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Priority to EP12150169.6A priority Critical patent/EP2612736B1/en
Priority to CN201210576116.0A priority patent/CN103192421B/en
Publication of EP2612736A1 publication Critical patent/EP2612736A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting

Definitions

  • the present invention further relates to a control device for a cutting machine, wherein the control device is programmed with such a control program, so that in operation due to the execution of the machine code the control program executes such an operating method.
  • the cutting blades are used to cut a wide range of materials, for example for cutting textiles, metals or food.
  • a cutting force is required for cutting the respective material. It is known in the art to vibrate the knife holder during the cutting operations so that the position of the cut area oscillates along the cutting edge at an oscillation amplitude during the number of cutting operations. By doing so, the cutting force can be reduced, often even significantly reduced. The reduction in cutting force can be up to 75%.
  • the cutting area is usually kept constant during the cutting operations. This has the consequence that the cutting blade is always in the same place in engagement.
  • the cutting knife is considered worn in the prior art, when the wear in the cutting area reaches or exceeds a predetermined level.
  • An operating method of the type mentioned is from the DE 10 2004 061 117 A1 known.
  • the blade blade is rotatably mounted in a holder and rotated by a motor continuously or discontinuously to distribute the wear occurring over the entire circumference of the blade blade.
  • a computerized control method for a machine tool is known.
  • a control command is given to a control computer, on the basis of which a workpiece is to be machined in a contiguous area.
  • the control computer automatically determines a number of traversing movements, on the basis of which the workpiece in the area is processed in each case over a partial height and overall over the desired total height.
  • the control computer determines the movements in such a way that the part heights vary.
  • the knife holder It is possible for the knife holder to be vibrated ultrasonically during the number of cutting operations in addition to motor positioning, so that the position of the cutting area oscillates along the cutting edge with an oscillation amplitude during the number of cutting operations.
  • the oscillation amplitude is usually smaller - usually even smaller - than the cutting area length.
  • the direction along which the motor positioning of the knife holder takes place may be determined as needed.
  • the motorized positioning of the knife holder preferably takes place along the course of the cutting edge.
  • the point of intersection does not shift when the knife holder is repositioned differently.
  • the exact procedure for varying the position of the knife holder may be determined as needed.
  • the position of the knife holder can be kept constant by the control device during the respective cutting operation, but varied between the cutting operations.
  • the position of the knife holder may be varied by the controller during the particular cutting operation.
  • the position of the knife holder can be varied continuously by the control device.
  • the position of the knife holder may be varied stepwise by the controller.
  • the position of the knife holder is always varied by the control device.
  • the position of the knife holder of the control device is varied only when the control device is specified by a user, a release command.
  • the object is further achieved by a control program of the type mentioned, wherein the processing of the machine code caused by the control device, that the control device controls the cutting machine according to an operating method according to the invention.
  • control device of the type mentioned, wherein the control device is programmed with a control program according to the invention.
  • the object is further achieved by a cutting machine of the type mentioned, in which the control device is designed according to the invention.
  • a cutting machine has a knife holder 1.
  • a cutting blade 2 is held in the knife holder 1.
  • the cutting blade 2 has according to FIG. 2 a cutting edge 3.
  • the cutting edge 3 extends over a cutting edge length L.
  • the cutting machine can be designed, for example, as a machine tool.
  • the cutting machine is controlled by a control device 6, which is part of the cutting machine.
  • the control device 6 is designed as a software programmable controller, for example as a numerical control (CNC).
  • the control device 6 is programmed with a control program 7.
  • the control program 7 comprises machine code 8, which can be processed directly by the control device 6.
  • the processing of the machine code 8 by the control device 6 causes the control device 6 in operation controls the cutting machine according to an operating method, which will be explained in more detail below.
  • FIG. 3 is the cutting blade 2 - guided by the control device 6 - along the cutting path 5 through the material to be cut 4.
  • the cutting blade 2 thereby cuts the material 4 to be cut with a cutting region 9 of its cutting edge 3.
  • the cutting region 9 has a cutting region length 1.
  • the cutting area length 1 is according to FIG. 3 only a fraction of the cutting edge length L.
  • fraction in the present case does not mean that the cutting region length 1 and the cutting edge length L are in the ratio 1: n, where n is an integer greater than 1.
  • fraction is meant rather that the Thomas Schlsus 1 is only a small part of the cutting edge length L, the cutting edge length L is thus a multiple of the Thomas Schlsus 1, for example, the 5-fold, 8.3-fold or 9, 7-fold.
  • the numerical values mentioned are of course only to be understood as examples.
  • material 4 After cutting into the 1 to 3 shown material 4 is cut by means of the cutting blade 2, another material, then another material, then another material, etc .. This is continued until the cutting blade 2 is worn and needs to be renewed.
  • the oscillation can also be realized in the context of the present invention. Regardless of whether the position of the cutting region 9 oscillates due to the ultrasound excitation US with the oscillation amplitude A or not, the knife holder 1 is positioned by the control device 6 during the number of cutting operations by appropriate motor control at different positions p such that the position of the cutting area 9 during the number of cutting operations along the cutting edge 3 over an adjustment range 10 varies.
  • the adjustment range 10 is here according to the FIGS. 5 to 7 larger than the cutting area 9.
  • the motorized positioning of the knife holder 1 thus takes place by a targeted position-controlled activation of the knife holder 1 by the control device 6, that is, by means of a corresponding position-controlled drive of the cutting machine.
  • the drive may be a drive with which the knife holder 1 is anyway, so in the prior art, adjustable.
  • the ultrasonic vibration on the other hand, is simply stimulated. Both their phase position and their exact oscillation amplitude A are usually not exactly known and also of secondary importance.
  • the position p of the knife holder 1 from the control device 6 according to the curves K1 and K2 in FIG. 6 be varied continuously.
  • the position p of the knife holder 1 from the control device 6 according to the curve K3 in FIG. 7 be varied gradually.
  • the term "stepwise" in this context means that the position p of the knife holder 1 is strictly monotonically varied during relatively short periods of time and is then kept constant during considerably longer periods of time.
  • the step height H can be determined as needed. Preferably, it is at least as large as the cutting region length 1, preferably slightly larger than the cutting region length 1, see the corresponding illustration in FIG FIG. 7 ,
  • the controller 6 continues to specify a parameter P by a user 11, which defines the setting range 10.
  • the predetermined parameter P is taken into account by the control device 6 during the determination of the adjustment range 10 and thus also during the determination of the positions p of the blade holder 1.
  • control device 6 controls the cutting machine always according to the above-explained inventive approach.
  • control device 6 it is possible for the control device 6 to check whether, as shown in FIG. 1 the user 11 a release command F is specified. In this case, the control device 6 varies the position p of the knife holder 1 only if the user 11 of the release command F is specified.
  • the direction in which the positioning of the knife holder 1 is made may be selected as needed. For example, it is possible that the positioning takes place in the same direction in which the ultrasonic vibration of the knife holder 1 is excited. It is also possible that the positioning of the knife holder 1 orthogonal to the to be cut Material 4 takes place. This direction may possibly coincide with the direction of the ultrasonic vibration. Preferably, the motorized positioning of the knife holder 1 - see the arrow 12 in FIG. 2 - Along the course of the cutting edge 3. In principle, however, other directions are possible.
  • the present invention has significant advantages.
  • the service life of the cutting blade 2 can be significantly increased due to the present invention. This is due to the substantially complete utilization of the cutting edge length L for cutting the material 4.

Description

Die vorliegende Erfindung betrifft ein Betriebsverfahren für eine von einer Steuereinrichtung gesteuerte Schneidmaschine,

  • wobei die Schneidmaschine einen Messerhalter aufweist, in dem ein Schneidmesser gehalten ist, das eine sich über eine Schneidkantenlänge erstreckende Schneidkante aufweist,
  • wobei das Schneidmesser während einer Anzahl von Schneidvorgängen jeweils entlang einer jeweiligen Schnittbahn durch ein jeweiliges zu zerschneidendes Material geführt wird, so dass das Schneidmesser das jeweils zu zerschneidende Material mit einem Schnittbereich seiner Schneidkante zerschneidet,
  • wobei der Schnittbereich eine Schnittbereichslänge aufweist, die nur ein Bruchteil der Schneidkantenlänge ist,
  • wobei der Messerhalter von der Steuereinrichtung während der Anzahl von Schneidvorgängen durch motorische Ansteuerung an verschiedenen Positionen derart positioniert wird, dass die Lage des Schnittbereichs während der Anzahl von Schneidvorgängen entlang der Schneidkante über einen Einstellbereich variiert, der größer als der Schnittbereich ist.
The present invention relates to an operating method for a control device controlled cutting machine,
  • wherein the cutting machine comprises a knife holder in which a cutting knife is held, which has a cutting edge extending over a cutting edge length,
  • wherein the cutting blade is guided along a respective cutting path through a respective material to be cut during a number of cutting operations, so that the cutting blade cuts the respective material to be cut with a cutting region of its cutting edge,
  • wherein the cut area has a cut area length that is only a fraction of the cut edge length,
  • wherein the blade holder is positioned by the control means during the number of cutting operations by motor control at various positions such that the position of the cutting area during the number of cutting operations along the cutting edge varies over a setting range that is greater than the cutting area.

Die vorliegende Erfindung betrifft weiterhin ein Steuerprogramm für eine Steuereinrichtung für eine Schneidmaschine, wobei das Steuerprogramm Maschinencode umfasst, der von der Steuereinrichtung unmittelbar abarbeitbar ist und dessen Abarbeitung durch die Steuereinrichtung bewirkt, dass die Steuereinrichtung die Schneidmaschine gemäß einem derartigen Betriebsverfahren steuert.The present invention further relates to a control program for a control device for a cutting machine, wherein the control program comprises machine code which is directly executable by the control device and whose execution by the control device causes the control device to control the cutting machine according to such an operating method.

Die vorliegende Erfindung betrifft weiterhin eine Steuereinrichtung für eine Schneidmaschine, wobei die Steuereinrichtung mit einem derartigen Steuerprogramm programmiert ist, so dass sie im Betrieb aufgrund der Abarbeitung des Maschinencodes des Steuerprogramms ein derartiges Betriebsverfahren ausführt.The present invention further relates to a control device for a cutting machine, wherein the control device is programmed with such a control program, so that in operation due to the execution of the machine code the control program executes such an operating method.

Die vorliegende Erfindung betrifft weiterhin eine Schneidmaschine,

  • wobei die Schneidmaschine einen Messerhalter aufweist, in dem ein Schneidmesser gehalten ist, das eine sich über eine Schneidkantenlänge erstreckende Schneidkante aufweist,
  • wobei die Schneidmaschine eine derartige Steuereinrichtung aufweist.
The present invention further relates to a cutting machine,
  • wherein the cutting machine comprises a knife holder in which a cutting knife is held, which has a cutting edge extending over a cutting edge length,
  • wherein the cutting machine comprises such a control device.

Die Schneidmesser werden zum Schneiden verschiedenster Materialien eingesetzt, beispielsweise zum Schneiden von Textilien, Metallen oder von Lebensmitteln. Zum Schneiden des jeweiligen Materials, d. h. zum Bewegen des Schneidmessers entlang der Schnittbahn, ist eine Schneidkraft erforderlich. Im Stand der Technik ist bekannt, den Messerhalter während der Schneidvorgänge mit Ultraschall zu Schwingungen anzuregen, so dass die Lage des Schnittbereichs während der Anzahl von Schneidvorgängen entlang der Schneidkante mit einer Oszillationsamplitude oszilliert. Durch diese Vorgehensweise kann die Schneidkraft reduziert werden, oftmals sogar erheblich reduziert werden. Die Reduzierung der Schneidkraft kann bis zu 75 % betragen.The cutting blades are used to cut a wide range of materials, for example for cutting textiles, metals or food. For cutting the respective material, d. H. for moving the cutting blade along the cutting path, a cutting force is required. It is known in the art to vibrate the knife holder during the cutting operations so that the position of the cut area oscillates along the cutting edge at an oscillation amplitude during the number of cutting operations. By doing so, the cutting force can be reduced, often even significantly reduced. The reduction in cutting force can be up to 75%.

Im Stand der Technik wird üblicherweise der Schnittbereich während der Schneidvorgänge konstant gehalten. Dies hat zur Folge, dass das Schneidmesser stets mit der gleichen Stelle im Eingriff ist. Das Schneidmesser gilt im Stand der Technik als verschlissen, wenn die Abnutzung im Schnittbereich ein vorbestimmtes Maß erreicht bzw. überschreitet.In the prior art, the cutting area is usually kept constant during the cutting operations. This has the consequence that the cutting blade is always in the same place in engagement. The cutting knife is considered worn in the prior art, when the wear in the cutting area reaches or exceeds a predetermined level.

Ein Betriebsverfahren der eingangs genannten Art ist aus der DE 10 2004 061 117 A1 bekannt. Bei diesem Verfahren wird das Klingenblatt in einer Halterung drehbar angeordnet und motorisch kontinuierlich oder diskontinuierlich gedreht, um den auftretenden Verschleiß über den gesamten Umfang des Klingenblattes zu verteilen.An operating method of the type mentioned is from the DE 10 2004 061 117 A1 known. In this method, the blade blade is rotatably mounted in a holder and rotated by a motor continuously or discontinuously to distribute the wear occurring over the entire circumference of the blade blade.

Aus der DE 102 20 166 A1 ist ein rechnergestütztes Steuerverfahren für eine Werkzeugmaschine bekannt. Im Rahmen dieses Steuerverfahrens wird einem Steuerrechner ein Steuerbefehl vorgegeben, aufgrund dessen ein Werkstück in einem zusammenhängenden Bereich spanabhebend bearbeitet werden soll. Der Steuerrechner ermittelt anhand des Steuerbefehls selbsttätig eine Anzahl von Verfahrbewegungen, aufgrund derer das Werkstück in dem Bereich jeweils über eine Teilhöhe und insgesamt über die gewünschte Gesamthöhe bearbeitet wird. Der Steuerrechner ermittelt die Verfahrbewegungen derart, dass die Teilhöhen variieren.From the DE 102 20 166 A1 a computerized control method for a machine tool is known. As part of this control method, a control command is given to a control computer, on the basis of which a workpiece is to be machined in a contiguous area. On the basis of the control command, the control computer automatically determines a number of traversing movements, on the basis of which the workpiece in the area is processed in each case over a partial height and overall over the desired total height. The control computer determines the movements in such a way that the part heights vary.

Die Aufgabe der vorliegenden Erfindung besteht darin, Möglichkeiten zu schaffen, mittels derer die Standzeit des Schneidmessers auf besonders einfache Weise gesteigert werden kann. Die Standzeit ist diejenige Betriebszeit, für die - ab dem Einbauen eines neuen Schneidmessers - das Schneidmesser genutzt werden kann, bis es verschlissen ist.The object of the present invention is to provide ways by which the life of the cutting blade can be increased in a particularly simple manner. The service life is the operating time for which - from the installation of a new cutting blade - the cutting blade can be used until it is worn.

Die Aufgabe wird durch ein Betriebsverfahren mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen des erfindungsgemäßen Betriebsverfahrens sind Gegenstand der abhängigen Ansprüche 2 bis 9.The object is achieved by an operating method with the features of claim 1. Advantageous embodiments of the operating method according to the invention are the subject of the dependent claims 2 to 9.

Erfindungsgemäß ist vorgesehen, ein Betriebsverfahren der eingangs genannten Art dadurch auszugestalten, dass die Position des Messerhalters von der Steuereinrichtung alternierend variiert wird und dass der Einstellbereich der Steuereinrichtung von einem Anwender als Parameter vorgegeben wird.According to the invention, an operating method of the type mentioned above is designed in that the position of the knife holder is alternately varied by the control device and that the setting range of the control device is specified by a user as a parameter.

Es ist möglich, dass der Messerhalter während der Anzahl von Schneidvorgängen zusätzlich zur motorischen Positionierung mit Ultraschall zu Schwingungen angeregt wird, so dass die Lage des Schnittbereichs während der Anzahl von Schneidvorgängen entlang der Schneidkante mit einer Oszillationsamplitude oszilliert. In diesem Fall werden die Vorteile der vorliegenden Erfindung (Verteilung des Verschleißes über den Einstellbereich) mit denen des Standes der Technik (Verringerung der erforderlichen Schneidkraft) kombiniert. Die Oszillationsamplitude ist in der Regel kleiner - meist sogar erheblich kleiner - als die Schnittbereichslänge.It is possible for the knife holder to be vibrated ultrasonically during the number of cutting operations in addition to motor positioning, so that the position of the cutting area oscillates along the cutting edge with an oscillation amplitude during the number of cutting operations. In this case, the advantages of the present invention (distribution of wear over the Adjustment range) with those of the prior art (reducing the required cutting force) combined. The oscillation amplitude is usually smaller - usually even smaller - than the cutting area length.

Die Richtung, entlang derer die motorische Positionierung des Messerhalters erfolgt, kann nach Bedarf bestimmt sein. Vorzugsweise erfolgt die motorische Positionierung des Messerhalters entlang des Verlaufs der Schneidkante.The direction along which the motor positioning of the knife holder takes place may be determined as needed. The motorized positioning of the knife holder preferably takes place along the course of the cutting edge.

Denn in diesem Fall verlagert sich, bezogen auf das zu zerschneidende Material, der Schnittpunkt nicht, wenn der Messerhalter anders positioniert wird.Because in this case, based on the material to be cut, the point of intersection does not shift when the knife holder is repositioned differently.

Die genaue Vorgehensweise zum Variieren der Position des Messerhalters kann nach Bedarf bestimmt sein. Beispielsweise kann die Position des Messerhalters von der Steuereinrichtung während des jeweiligen Schneidvorgangs konstant gehalten werden, aber zwischen den Schneidvorgängen variiert werden. Alternativ kann die Position des Messerhalters von der Steuereinrichtung während des jeweiligen Schneidvorgangs variiert werden.The exact procedure for varying the position of the knife holder may be determined as needed. For example, the position of the knife holder can be kept constant by the control device during the respective cutting operation, but varied between the cutting operations. Alternatively, the position of the knife holder may be varied by the controller during the particular cutting operation.

Im Falle einer Variierung der Position des Messerhalters während des jeweiligen Schneidvorgangs kann die Position des Messerhalters von der Steuereinrichtung kontinuierlich variiert werden. Alternativ kann die Position des Messerhalters von der Steuereinrichtung stufenweise variiert werden.In the case of a variation of the position of the knife holder during the respective cutting operation, the position of the knife holder can be varied continuously by the control device. Alternatively, the position of the knife holder may be varied stepwise by the controller.

Es ist möglich, dass die Position des Messerhalters von der Steuereinrichtung stets variiert wird. Alternativ ist es möglich, dass die Position des Messerhalters von der Steuereinrichtung nur dann variiert wird, wenn der Steuereinrichtung von einem Anwender ein Freigabebefehl vorgegeben wird.It is possible that the position of the knife holder is always varied by the control device. Alternatively, it is possible that the position of the knife holder of the control device is varied only when the control device is specified by a user, a release command.

Die Aufgabe wird weiterhin durch ein Steuerprogramm der eingangs genannten Art gelöst, wobei die Abarbeitung des Maschinencodes durch die Steuereinrichtung bewirkt, dass die Steuereinrichtung die Schneidmaschine gemäß einem erfindungsgemäßen Betriebsverfahren steuert.The object is further achieved by a control program of the type mentioned, wherein the processing of the machine code caused by the control device, that the control device controls the cutting machine according to an operating method according to the invention.

Die Aufgabe wird weiterhin durch eine Steuereinrichtung der eingangs genannten Art gelöst, wobei die Steuereinrichtung mit einem erfindungsgemäßen Steuerprogramm programmiert ist.The object is further achieved by a control device of the type mentioned, wherein the control device is programmed with a control program according to the invention.

Die Aufgabe wird weiterhin durch eine Schneidmaschine der eingangs genannten Art gelöst, bei der die Steuereinrichtung erfindungsgemäß ausgebildet ist.The object is further achieved by a cutting machine of the type mentioned, in which the control device is designed according to the invention.

Die oben beschriebenen Eigenschaften, Merkmale und Vorteile der vorliegenden Erfindung sowie die Art und Weise, wie diese erreicht werden, werden klarer und deutlicher verständlich im Zusammenhang mit der folgenden Beschreibung der Ausführungsbeispiele, die in Verbindung mit den Zeichnungen näher erläutert werden. Hierbei zeigen in schematischer Darstellung:

FIG 1
eine Schneidmaschine und ein zu zerschneidendes Material,
FIG 2
einen Ausschnitt von FIG 1 in der Seitenansicht,
FIG 3
ein zu zerschneidendes Material,
FIG 4
einen möglichen zeitlichen Verlauf einer Oszillation der Lage eines Schnittbereichs und
FIG 5 bis 7
mögliche motorische Variationen der Lage des Schnittbereichs.
The above-described characteristics, features, and advantages of the present invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following description of the embodiments, which will be described in more detail in conjunction with the drawings. Here are shown in a schematic representation:
FIG. 1
a cutting machine and a material to be cut,
FIG. 2
a section of FIG. 1 in the side view,
FIG. 3
a material to be cut,
FIG. 4
a possible time course of an oscillation of the position of a cutting area and
FIGS. 5 to 7
possible motor variations of the location of the cutting area.

Gemäß FIG 1 weist eine Schneidmaschine einen Messerhalter 1 auf. In dem Messerhalter 1 ist ein Schneidmesser 2 gehalten. Das Schneidmesser 2 weist gemäß FIG 2 eine Schneidkante 3 auf. Die Schneidkante 3 erstreckt sich über eine Schneidkantenlänge L. Mittels des Schneidmessers 2 soll ein zu zerschneidendes Material 4 entlang einer Schnittbahn 5 - siehe FIG 3 - zerschnitten werden. Die Schneidmaschine kann beispielsweise als Werkzeugmaschine ausgebildet sein.According to FIG. 1 a cutting machine has a knife holder 1. In the knife holder 1, a cutting blade 2 is held. The cutting blade 2 has according to FIG. 2 a cutting edge 3. The cutting edge 3 extends over a cutting edge length L. By means of the cutting blade 2 to be cut material 4 along a cutting path 5 - see FIG. 3 - be cut. The cutting machine can be designed, for example, as a machine tool.

Die Schneidmaschine wird von einer Steuereinrichtung 6 gesteuert, die Bestandteil der Schneidmaschine ist. Die Steuereinrichtung 6 ist als softwareprogrammierbare Steuerung ausgebildet, beispielsweise als numerische Steuerung (CNC). Die Steuereinrichtung 6 ist mit einem Steuerprogramm 7 programmiert. Das Steuerprogramm 7 umfasst Maschinencode 8, der von der Steuereinrichtung 6 unmittelbar abarbeitbar ist. Die Abarbeitung des Maschinencodes 8 durch die Steuereinrichtung 6 bewirkt, dass die Steuereinrichtung 6 im Betrieb die Schneidmaschine gemäß einem Betriebsverfahren steuert, das nachfolgend näher erläutert wird.The cutting machine is controlled by a control device 6, which is part of the cutting machine. The control device 6 is designed as a software programmable controller, for example as a numerical control (CNC). The control device 6 is programmed with a control program 7. The control program 7 comprises machine code 8, which can be processed directly by the control device 6. The processing of the machine code 8 by the control device 6 causes the control device 6 in operation controls the cutting machine according to an operating method, which will be explained in more detail below.

Gemäß FIG 3 wird das Schneidmesser 2 - gesteuert von der Steuereinrichtung 6 - entlang der Schnittbahn 5 durch das zu zerschneidende Material 4 geführt. Das Schneidmesser 2 zerschneidet dadurch das zu zerschneidende Material 4 mit einem Schnittbereich 9 seiner Schneidkante 3. Der Schnittbereich 9 weist eine Schnittbereichslänge 1 auf. Die Schnittbereichslänge 1 ist gemäß FIG 3 nur ein Bruchteil der Schneidkantenlänge L.According to FIG. 3 is the cutting blade 2 - guided by the control device 6 - along the cutting path 5 through the material to be cut 4. The cutting blade 2 thereby cuts the material 4 to be cut with a cutting region 9 of its cutting edge 3. The cutting region 9 has a cutting region length 1. The cutting area length 1 is according to FIG. 3 only a fraction of the cutting edge length L.

Mit dem Begriff "Bruchteil" ist im vorliegenden Fall nicht gemeint, dass die Schnittbereichslänge 1 und die Schneidkantenlänge L im Verhältnis 1:n stehen, wobei n eine ganze Zahl größer als 1 ist. Mit dem Begriff "Bruchteil" ist vielmehr gemeint, dass die Schnittbereichslänge 1 nur ein kleiner Teil der Schneidkantenlänge L ist, die Schneidkantenlänge L also ein Mehrfaches der Schnittbereichslänge 1 ist, beispielsweise das 5-fache, das 8,3-fache oder das 9,7-fache. Die genannten Zahlenwerte sind selbstverständlich nur rein beispielhaft zu verstehen.The term "fraction" in the present case does not mean that the cutting region length 1 and the cutting edge length L are in the ratio 1: n, where n is an integer greater than 1. By the term "fraction" is meant rather that the Schnittbereichslänge 1 is only a small part of the cutting edge length L, the cutting edge length L is thus a multiple of the Schnittbereichslänge 1, for example, the 5-fold, 8.3-fold or 9, 7-fold. The numerical values mentioned are of course only to be understood as examples.

Nach dem Zerschneiden des in den FIG 1 bis 3 dargestellten Materials 4 wird mittels des Schneidmessers 2 ein weiteres Material zerschnitten, danach ein weiteres Material, danach ein weiteres Material usw.. Dies wird fortgesetzt, bis das Schneidmesser 2 verschlissen ist und erneuert werden muss. Das Material 4, das jeweils zerschnitten wird, kann nach Art und Dicke jeweils dasselbe Material sein, beispielsweise stets ein Kupferblech der Stärke d = 1,0 mm. Das soeben angegebene Material ist jedoch sowohl nach Art (Kupfer) als auch nach Stärke (1,0 mm) nur rein beispielhaft zu verstehen. Unabhängig vom konkret zerschnittenen Material 4 ergibt sich die Schnittbereichslänge 1 jedoch durch die Stärke d des zu zerschneidenden Materials 4 in Verbindung mit einem Winkel a, den die Schneidkante 3 mit dem zu zerschneidenden Material 4 bildet.After cutting into the 1 to 3 shown material 4 is cut by means of the cutting blade 2, another material, then another material, then another material, etc .. This is continued until the cutting blade 2 is worn and needs to be renewed. The material 4, which is cut in each case, according to Art and thickness are each the same material, for example, always a copper sheet of thickness d = 1.0 mm. However, the material just mentioned is to be understood as purely by way of example both by type (copper) and by thickness (1.0 mm). However, regardless of the concrete cut material 4, the cutting area length 1 results from the thickness d of the material to be cut 4 in conjunction with an angle a, which forms the cutting edge 3 with the material 4 to be cut.

Im Stand der Technik ist es entsprechend der Darstellung der FIG 1 und 2 üblich, den Messerhalter 1 während der Schneidvorgänge mit Ultraschall US zu Schwingungen anzuregen. Die Anregung erfolgt in der Regel entsprechend der Darstellung in FIG 2 - siehe dort den vertikalen Doppelpfeil - orthogonal zur jeweiligen Verfahrrichtung x des Schneidmessers 2. Die Schwingungsrichtung ist weiterhin in der Regel orthogonal zur Quererstreckung des zu zerschneidenden Materials 4. Unabhängig von der genauen Art der Anregung oszilliert die Lage des Schnittbereichs 9 aufgrund der Ultraschallanregung während der Schneidvorgänge entlang der Schneidkante 3 mit einer Oszillationsamplitude A. FIG 4 zeigt - ebenso wie die FIG 5 bis 7 - die Lage der Mitte des Schnittbereichs 9. Die Oszillationsamplitude A ist entsprechend der Darstellung von FIG 4 in aller Regel erheblich kleiner als die Schnittbereichslänge 1. Die Oszillationsamplitude A beträgt in der Regel nur wenige Mikrometer, beispielsweise 10 Mikrometer bis 20 Mikrometer.In the prior art, it is according to the representation of 1 and 2 usual to excite the knife holder 1 during the cutting operations with ultrasound US to vibrate. The suggestion is usually as shown in FIG. 2 The direction of oscillation is furthermore generally orthogonal to the transverse extent of the material 4 to be cut. Irrespective of the exact type of excitation, the position of the cutting region 9 oscillates due to the ultrasonic excitation during the Cutting operations along the cutting edge 3 with an oscillation amplitude A. FIG. 4 shows - as well as the FIGS. 5 to 7 the position of the center of the section 9. The oscillation amplitude A is as shown in FIG FIG. 4 As a rule, much smaller than the cutting area length 1. The oscillation amplitude A is usually only a few micrometers, for example 10 microns to 20 microns.

Die Oszillation ist auch im Rahmen der vorliegenden Erfindung realisierbar. Unabhängig davon, ob die Lage des Schnittbereichs 9 aufgrund der Anregung mit Ultraschall US mit der Oszillationsamplitude A oszilliert oder nicht, wird der Messerhalter 1 von der Steuereinrichtung 6 während der Anzahl von Schneidvorgängen durch entsprechende motorische Ansteuerung an verschiedenen Positionen p derart positioniert, dass die Lage des Schnittbereichs 9 während der Anzahl von Schneidvorgängen entlang der Schneidkante 3 über einen Einstellbereich 10 variiert. Der Einstellbereich 10 ist hierbei gemäß den FIG 5 bis 7 größer als der Schnittbereich 9.The oscillation can also be realized in the context of the present invention. Regardless of whether the position of the cutting region 9 oscillates due to the ultrasound excitation US with the oscillation amplitude A or not, the knife holder 1 is positioned by the control device 6 during the number of cutting operations by appropriate motor control at different positions p such that the position of the cutting area 9 during the number of cutting operations along the cutting edge 3 over an adjustment range 10 varies. The adjustment range 10 is here according to the FIGS. 5 to 7 larger than the cutting area 9.

Die motorische Positionierung des Messerhalters 1 erfolgt also durch eine gezielte positionsgeregelte Ansteuerung des Messerhalters 1 durch die Steuereinrichtung 6, also mittels eines entsprechenden lagegeregelten Antriebs der Schneidmaschine. Der Antrieb kann ein Antrieb sein, mit dem der Messerhalter 1 sowieso, also auch im Stand der Technik, verstellbar ist. Die Ultraschallschwingung hingegen wird schlichtweg angeregt. Sowohl ihre Phasenlage als auch ihre exakte Oszillationsamplitude A sind in der Regel nicht exakt bekannt und auch von untergeordneter Bedeutung.The motorized positioning of the knife holder 1 thus takes place by a targeted position-controlled activation of the knife holder 1 by the control device 6, that is, by means of a corresponding position-controlled drive of the cutting machine. The drive may be a drive with which the knife holder 1 is anyway, so in the prior art, adjustable. The ultrasonic vibration, on the other hand, is simply stimulated. Both their phase position and their exact oscillation amplitude A are usually not exactly known and also of secondary importance.

Für das motorische Variieren der Position p des Messerhalters 1 sind verschiedene Strategien möglich. Beispielsweise ist es gemäß FIG 5 möglich, dass die Position p des Messerhalters 1 von der Steuereinrichtung 6 zwar während des jeweiligen Schneidvorgangs konstant gehalten wird, aber zwischen den einzelnen Schneidvorgängen variiert wird. Alternativ ist es gemäß den FIG 6 und 7 möglich, dass die Position p des Messerhalters 1 von der Steuereinrichtung 6 während des jeweiligen Schneidvorgangs verändert wird.For the motorized variation of the position p of the knife holder 1 different strategies are possible. For example, it is according to FIG. 5 possible that the position p of the knife holder 1 is kept constant by the control device 6 during the respective cutting operation, but is varied between the individual cutting operations. Alternatively, it is according to the FIGS. 6 and 7 possible that the position p of the knife holder 1 is changed by the control device 6 during the respective cutting operation.

Falls die Position p des Messerhalters 1 während des jeweiligen Schneidvorgangs verändert wird, kann die Position p des Messerhalters 1 von der Steuereinrichtung 6 gemäß den Kurven K1 und K2 in FIG 6 kontinuierlich variiert werden. Alternativ kann die Position p des Messerhalters 1 von der Steuereinrichtung 6 gemäß der Kurve K3 in FIG 7 stufenweise variiert werden. Der Begriff "stufenweise" bedeutet in diesem Zusammenhang, dass die Position p des Messerhalters 1 während relativ kurzer Zeitspannen streng monoton variiert wird und sodann während erheblich längerer Zeitspannen konstant gehalten wird. Die Stufenhöhe H kann nach Bedarf bestimmt sein. Vorzugsweise ist sie mindestens so groß wie die Schnittbereichslänge 1, vorzugsweise geringfügig größer als die Schnittbereichslänge 1, siehe die entsprechende Darstellung in FIG 7.If the position p of the knife holder 1 is changed during the respective cutting operation, the position p of the knife holder 1 from the control device 6 according to the curves K1 and K2 in FIG. 6 be varied continuously. Alternatively, the position p of the knife holder 1 from the control device 6 according to the curve K3 in FIG. 7 be varied gradually. The term "stepwise" in this context means that the position p of the knife holder 1 is strictly monotonically varied during relatively short periods of time and is then kept constant during considerably longer periods of time. The step height H can be determined as needed. Preferably, it is at least as large as the cutting region length 1, preferably slightly larger than the cutting region length 1, see the corresponding illustration in FIG FIG. 7 ,

Es ist - siehe die entsprechenden Darstellungen in den FIG 5 und 7 sowie die Kurve K1 in FIG 6 - möglich, dass die Position p des Messerhalters 1 von der Steuereinrichtung 6 monoton variiert wird. Alternativ ist es möglich, dass die Position p des Messerhalters 1 von der Steuereinrichtung 6 alternierend variiert wird. Dies ist in FIG 6 für die Kurve K2 dargestellt. Eine analoge Vorgehensweise ist auch in Bezug auf FIG 5 möglich. Die in FIG 6 dargestellte sinusförmige Variierung der Position p des Messerhalters 1 ist selbstverständlich nur rein beispielhaft. Es sind auch andere Variationen möglich, beispielsweise gemäß einer Dreieckkurve oder gemäß einem Sägezahn.It is - see the corresponding representations in the FIG. 5 and 7 as well as the curve K1 in FIG. 6 - possible that the position p of the knife holder 1 is monotonously varied by the control device 6. Alternatively, it is possible that the position p of the knife holder 1 is alternately varied by the control device 6. This is in FIG. 6 shown for the curve K2. An analogous approach is also regarding FIG. 5 possible. In the FIG. 6 illustrated sinusoidal variation of the position p of the knife holder 1 is of course only a pure example. Other variations are possible, for example according to a triangular curve or according to a sawtooth.

Im Rahmen der vorliegenden Erfindung wird der Steuereinrichtung 6 von einem Anwender 11 weiterhin ein Parameter P vorgegeben, der den Einstellbereich 10 festlegt. Der vorgegebene Parameter P wird von der Steuereinrichtung 6 bei der Ermittlung des Einstellbereichs 10 und damit auch bei der Ermittlung der Positionen p des Messerhalters 1 berücksichtigt.In the context of the present invention, the controller 6 continues to specify a parameter P by a user 11, which defines the setting range 10. The predetermined parameter P is taken into account by the control device 6 during the determination of the adjustment range 10 and thus also during the determination of the positions p of the blade holder 1.

Es ist möglich, dass die Steuereinrichtung 6 die Schneidmaschine stets gemäß der obenstehend erläuterten erfindungsgemäßen Vorgehensweise steuert. Alternativ ist es möglich, dass die Steuereinrichtung 6 prüft, ob ihr gemäß der Darstellung in FIG 1 vom Anwender 11 ein Freigabebefehl F vorgegeben wird. In diesem Fall variiert die Steuereinrichtung 6 die Position p des Messerhalters 1 nur dann, wenn ihr vom Anwender 11 der Freigabebefehl F vorgegeben wird.It is possible that the control device 6 controls the cutting machine always according to the above-explained inventive approach. Alternatively, it is possible for the control device 6 to check whether, as shown in FIG FIG. 1 the user 11 a release command F is specified. In this case, the control device 6 varies the position p of the knife holder 1 only if the user 11 of the release command F is specified.

Die Richtung, in welcher die Positionierungen des Messerhalters 1 erfolgen, kann nach Bedarf gewählt sein. Beispielsweise ist es möglich, dass die Positionierung in derselben Richtung erfolgt, in der die Ultraschallschwingung des Messerhalters 1 angeregt wird. Ebenso ist es möglich, dass die Positionierung des Messerhalters 1 orthogonal zu dem zu zerschneidenden Material 4 erfolgt. Diese Richtung kann ggf. mit der Richtung der Ultraschallschwingung zusammenfallen. Vorzugsweise erfolgt die motorische Positionierung des Messerhalters 1 - siehe den Pfeil 12 in FIG 2 - entlang des Verlaufs der Schneidkante 3. Prinzipiell sind jedoch auch andere Richtungen möglich.The direction in which the positioning of the knife holder 1 is made may be selected as needed. For example, it is possible that the positioning takes place in the same direction in which the ultrasonic vibration of the knife holder 1 is excited. It is also possible that the positioning of the knife holder 1 orthogonal to the to be cut Material 4 takes place. This direction may possibly coincide with the direction of the ultrasonic vibration. Preferably, the motorized positioning of the knife holder 1 - see the arrow 12 in FIG. 2 - Along the course of the cutting edge 3. In principle, however, other directions are possible.

Die vorliegende Erfindung weist signifikante Vorteile auf. Insbesondere kann die Standzeit des Schneidmessers 2 aufgrund der vorliegenden Erfindung deutlich erhöht werden. Dies beruht auf der im Wesentlichen vollständigen Ausnutzung der Schneidkantenlänge L zum Zerschneiden des Materials 4. Obwohl die Erfindung im Detail durch das bevorzugte Ausführungsbeispiel näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung, wie durch die folgenden Ansprüche definiert, zu verlassen.The present invention has significant advantages. In particular, the service life of the cutting blade 2 can be significantly increased due to the present invention. This is due to the substantially complete utilization of the cutting edge length L for cutting the material 4. Although the invention has been further illustrated and described in detail by the preferred embodiment, the invention is not limited to the examples disclosed and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention as defined by the following claims.

Claims (12)

  1. Operating method for a cutting machine controlled by a control facility (6),
    - wherein the cutting machine has a blade holder (1), in which a cutting blade (2) is held, which has a cutting edge (3) extending over a cutting edge length (L),
    - wherein the cutting blade (2) is guided in each instance along a respective cutting path (5) through a material (4) to be cut in each instance during a number of cutting operations, so that the cutting blade (2) cuts the material (4) to be cut in each instance with a cutting region (9) of its cutting edge (3),
    - wherein the cutting region (9) has a cutting region length (1) which is only a fraction of the cutting edge length (L),
    - wherein the blade holder (1) is positioned by the control facility (6) during the number of cutting operations by motor-controlled activation in different positions (p), so that the position of the cutting region (9) varies during the number of cutting operations along the cutting edge (3) over a setting region (10), which is larger than the cutting region (9),
    characterised in that
    - the position (p) of the blade holder (1) is varied in an alternating manner by the control facility (6),
    and that
    - the setting region (10) is predetermined as a parameter (P) for the control facility (6) by a user (11).
  2. Operating method according to claim 1, characterised in that the blade holder (1) is excited to oscillate by ultrasound as well as being positioned by motor during the number of cutting operations, so that the position of the cutting region (9) oscillates along the cutting edge (3) with an oscillation amplitude (A) during the number of cutting operations.
  3. Operating method according to claim 2, characterised in that the oscillation amplitude (A) is smaller than the cutting region length (1).
  4. Operating method according to claim 1, 2 or 3, characterised in that the motor-controlled positioning of the blade holder (1) takes place along the course of the cutting edge (3).
  5. Operating method according to one of claims 1 to 4, characterised in that the position (p) of the blade holder (1) is kept constant by the control facility (6) during the respective cutting operation but is varied between cutting operations.
  6. Operating method according to one of claims 1 to 4, characterised in that the position (p) of the blade holder (1) is varied by the control facility (6) during the respective cutting operation.
  7. Operating method according to claim 6, characterised in that the position (p) of the blade holder (1) is varied continuously by the control facility (6).
  8. Operating method according to claim 6, characterised in that the position (p) of the blade holder (1) is varied in a stepped manner by the control facility (6).
  9. Operating method according to one of the preceding claims, characterised in that the position (p) of the blade holder (1) is only varied by the control facility (6) if a release command (F) is predetermined for the control facility (6) by a user (11).
  10. Control program for a control facility (6) for a cutting machine, wherein the control program comprises machine code (8), which can be processed directly by the control facility (6) and the processing of which by the control facility (6) causes the control facility (6) to control the cutting machine according to an operating method according to one of the preceding claims.
  11. Control facility for a cutting machine, wherein the control facility is programmed with a control program (7) according to claim 10, so that during operation it controls the cutting machine according to an operating method according to one of claims 1 to 9 based on the processing of the machine code.
  12. Cutting machine,
    - wherein the cutting machine has a blade holder (1), in which a cutting blade (2) is held, which has a cutting edge (3) extending over a cutting edge length (L),
    - wherein the cutting machine has a control facility (6),
    - wherein the control facility (6) is configured according to claim 11.
EP12150169.6A 2012-01-04 2012-01-04 Cutting machine with variation of the cutting area Active EP2612736B1 (en)

Priority Applications (2)

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EP12150169.6A EP2612736B1 (en) 2012-01-04 2012-01-04 Cutting machine with variation of the cutting area
CN201210576116.0A CN103192421B (en) 2012-01-04 2012-12-26 The cutting machine of the vicissitudinous cutting zone of tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12150169.6A EP2612736B1 (en) 2012-01-04 2012-01-04 Cutting machine with variation of the cutting area

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EP2612736A1 EP2612736A1 (en) 2013-07-10
EP2612736B1 true EP2612736B1 (en) 2019-09-11

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CN105666565B (en) * 2016-01-27 2018-09-07 蚌埠市拓坚机电有限公司 A kind of system and its control method for being cut out to wet curtain paper
GB201810055D0 (en) * 2018-06-19 2018-08-08 Ishida Europe Ltd Method and system for processing poultry portions

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CH657304A5 (en) * 1980-09-16 1986-08-29 Gottlieb Looser DEVICE FOR DIVIDING OF TRACKS OR DISEASES suppression of plastic.
DK0679482T3 (en) * 1994-04-26 1998-05-04 Investronica Sa Knife guide device suspended in a cutting machine for cutting sheets of material
WO2000069605A1 (en) * 1999-05-13 2000-11-23 Copyer Co., Ltd. Recording material cutting device
JP4486179B2 (en) * 1999-06-17 2010-06-23 キヤノンファインテック株式会社 Recording material cutting device
CN2483157Y (en) * 2001-04-29 2002-03-27 大量科技股份有限公司 Cutting apparatus for flexible sheet cutting machine for printed circuit board
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JP5456290B2 (en) * 2008-09-18 2014-03-26 スタンレー電気株式会社 Method for creating imaging element
KR20100129203A (en) * 2009-05-29 2010-12-08 후지필름 가부시키가이샤 Method of cutting laminated body
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CN103192421B (en) 2016-03-09
CN103192421A (en) 2013-07-10

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