EP0711633B1 - Method and processing machine for fluid jet cutting of workpieces - Google Patents
Method and processing machine for fluid jet cutting of workpieces Download PDFInfo
- Publication number
- EP0711633B1 EP0711633B1 EP95115843A EP95115843A EP0711633B1 EP 0711633 B1 EP0711633 B1 EP 0711633B1 EP 95115843 A EP95115843 A EP 95115843A EP 95115843 A EP95115843 A EP 95115843A EP 0711633 B1 EP0711633 B1 EP 0711633B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- workpiece
- jet
- units
- jets
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
- B24C3/04—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other stationary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
- B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
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- 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
- Y10T83/364—By fluid blast and/or suction
Definitions
- the invention relates to a method for jet cutting Workpieces according to the preamble of claim 1.
- the invention further relates to a processing machine for performing such Method according to the preamble of claim 9.
- EP 0 207 069 A1 discloses a method and an apparatus for cutting workpieces using two cutting beams, the opposite sides of the to be machined Workpiece to be aimed at this and approximately in the middle of the material meet each other.
- the invention is based on the object, the known methods for jet cutting workpieces and the known ones To further develop processing machines. It should be a good one Quality of the cut edges even at high cutting speeds let achieve.
- the process-related task mentioned is according to the invention solved in that within the scope of a method of the initially mentioned Type the cutting beams in such a way to the one to be processed Workpiece that the beam axes are below cut the workpiece and that the beam axes are immediately adjacent to each other on the cutting line run.
- the section plane is formed by the tangential plane to the workpiece in the respective machining point.
- a conceptual model to explain the observed Phenomenon assumes that the inventive Use of two cutting beams running at an angle to each other one cutting beam supports the other and thereby the Cutting effect of at least one of the cutting beams is enhanced is caused by a lateral breakout due to the support effect of the cutting beam in question compared to the one to be processed Workpiece is prevented.
- An "immediately adjacent" arrangement the cutting rays are then within the meaning of the invention before when the distance of the points of incidence of the cutting beams the cutting line is so low that the reinforcement described the cutting action of at least one of the cutting beams is achieved.
- machining results can be achieved that a first cutting beam is substantially perpendicular and a second cutting beam at a right angle deviating angle is directed at the workpiece.
- a second cutting beam at a right angle deviating angle is directed at the workpiece.
- two cutting beams under one of one right angle deviating angle directed at the workpiece become.
- Another process variant is characterized in that two cutting beams are directed onto the workpiece in such a way that the beam axes form an angle of less than 60 °.
- the advantages of the method according to the invention can be with cutting jets from different cutting media to reach.
- the process uses cutting jets in the form of preferably abrasive agents leading pressurized water jets aimed at the workpiece.
- the pressurized water jets are expediently under a pressure of 2800 bar to 3400 bar aimed at the workpiece.
- a preferred version of the method according to the invention draws is characterized in that only for cutting the workpiece a cutting beam and after cutting the workpiece Another cutting beam is aimed at the workpiece.
- the device-related task mentioned at the outset becomes solved the invention in that on generic processing machines the cutting units simultaneously in the cutting operation and the workpiece can be moved relative to one another along a common cutting line of the cutting units, the cutting units being arranged and aligned in this way are that the cutting beams span a cutting beam plane running in the cutting direction, that the beam axes of the cutting beams cut underneath the workpiece and that the beam axes are directly at the intersection run adjacent.
- the processing machine provided that at least one cutting unit around a substantially parallel to the cutting plane running pivot axis opposite the assigned cutting unit pivotable and in the respective Swivel position is definable. Leave on such a processing machine the cutting beams are parallel to each other or under variable Align angles to each other. Accordingly, the Processing machine flexible to different application requirements be adjusted.
- a version of the processing machine according to the invention offers where the cutting units essentially parallel to the cutting plane in the cutting direction, are slidably mounted relative to each other.
- the cutting beams expediently take in the cutting operation a certain position in relation to the cutting direction. there the position of the cutting beams in relation to the cutting direction defined by the course of the cutting rays spanned cutting beam plane opposite the cutting direction. If the cutting direction is now to be changed, the position is to maintain the cutting beams in relation to the changed cutting direction. To this The purpose is to shift the cutting beam plane relative to the workpiece. Such a shift in the cutting beam plane is at a preferred embodiment of the processing machine according to the invention thereby allowing at least one cutting unit around a substantially perpendicular to the cutting plane Rotation-swivel axis rotatable relative to the workpiece is.
- a change in the cutting direction and a related one Rotary pivoting movement of at least one cutting unit can both in the current cutting operation and after completion of a separating cut.
- the former In this case there is a curved cut, in the second Fall can be based on the finished separation cut and another separation cut running at an angle to it become.
- a compact processing machine results when the cutting units on a common cutting head of the processing machine are provided.
- a preferred embodiment of the processing machine according to the invention on the pressurized water units as cutting units are provided, characterized in that for each jet of pressurized water an abrasive supply is provided. Thereby the cutting beams can be independent in their cutting behavior modify each other.
- the cutting units as provided in a development of the invention, separately with the assigned source for the cutting beam are connectable.
- the cutting units can be phase of the cutting process operate together or individually.
- a prerequisite for automated workpiece processing is created in that the cutting units by means of a Connection control controlled with the assigned source for the Cutting beam can be connected.
- Processing machines according to the invention their cutting units separately and / or controlled by means of a connection control the associated source for the cutting beam can be connected, are also used, for example, to implement that variant of the used method according to the invention, in which the to be processed Cut the workpiece with just one cutting beam and then further processed with two cutting beams.
- Another preferred embodiment of an inventive Processing machine with a speed control for Control of the relative speed between the cutting units and the workpiece is characterized by that by means of the speed control, the relative speed between the cutting units and the workpiece on the number of a cutting beam on the workpiece directing cutting units and / or the duration of the connection the cutting units is controlled.
- Such a processing machine is also preferred for the one described above Two-phase cutting operation determined. In the cutting phase, in which only a cutting beam is aimed at the workpiece is a proportionate speed control low relative speed between that in the cutting operation located cutting unit and the workpiece.
- the processing machine according to the invention operates in this phase according to the conventional machining process, accordingly the separating cut produced by means of a single processing beam becomes.
- the cutting speed ie the relative speed between the cutting units and the workpiece not abruptly, but rather gradually increased as soon as the second cutting unit has reached the workpiece. This is accomplished by means of the speed control, which the relative speed between cutting units and workpiece after the second cutting unit takes effect and after increases.
- the speed control which the relative speed between cutting units and workpiece after the second cutting unit takes effect and after increases.
- the 1 shows a cutting head 1 of a water jet cutting machine, that in the direction of an arrow 2 relative to one stationary workpiece in the form of a sheet 3 is moved.
- the cutting head 1 is on the metal sheet 3 overlapping portal Carrier of a machine sled attached.
- the machine slide can be moved along the metal sheet 3.
- the cutting head 1 can be moved in the longitudinal direction of the carrier and thus in the transverse direction of the direction of travel of the machine slide move in a controlled manner. Accordingly, the Cutting head 1 reach every point in the sheet plane.
- Integrated in the cutting head 1 are two cutting units 4, 5, which the metal sheet 3 in the cutting operation with cutting beams 6, 7 act in the form of high pressure water jets, the Beam axes intersect below the cutting plane.
- the cutting unit 4 directs its cutting beam 6 under an im substantial right angle on the surface of the metal sheet 3.
- the cutting beam 7 emitted by the cutting unit 5 runs at an angle other than a right angle the workpiece surface.
- the cutting beams 6, 7 or their Beam axes span a perpendicular to the sheet 3 Cutting beam level.
- the cutting units are on the side facing away from the metal sheet 3 4, 5 via connections 8, 9 and high-pressure lines indicated in FIG. 1 10, 11 each connected to a high pressure pump.
- the entire cutting head 1 can in the direction of the beam axis of the cutting beam 6 rotating pivot axis 12 in Be pivoted in the direction of an arrow 13.
- the cutting machine partially shown in Figure 2 has one Cutting head 21 with two separate cutting units 24, 25.
- a carrier 34 of a machine slide Cutting head 21 in the direction of a symbolizing the cutting direction Arrow 22 opposite a workpiece in the form of a metal sheet 23 motor-driven movable.
- the Machine slide perpendicular to the drawing plane according to FIG. 2 be moved.
- the cutting units 24, 25 are substantially parallel to one another to the plane of the sheet 23, that is to say to the cutting plane, extending pivot axis 35 pivotally connected to each other.
- For Clamp-like brackets are used to produce the swivel connection 36, 37 which enclose the cutting units 24, 25.
- Means of a spindle drive 38 is the cutting unit 25 inside its holder 37 in the direction of a double arrow 39 deliverable.
- the cutting unit 25 can be in the direction of a double arrow 41 are moved, the bracket 36, which the Cuts around cutting unit 24, can in the direction of a double arrow 40 delivered substantially perpendicular to the plane of the sheet 23 become.
- the entire can be rotated about a pivot axis 32 Cutting head 21 in the direction of a double arrow 33 motorized swivel.
- the cutting units 24, 25 align in FIG. 2 only indicated cutting rays 26, 27 on the surface the sheet of metal 23.
- the cutting beam 26 runs Cutting unit 24 essentially perpendicular to the workpiece surface: the cutting beam 27 of the cutting unit 25 also includes the workpiece surface is different from a right angle Angle on.
- the two cutting beams 26, 27 intersect in the cutting plane and clamp one in the cutting direction, the is called the cutting beam plane extending in the direction of arrow 22 on.
- the cutting beams 26, 27 are generated by means of under pressure standing cutting water, which the cutting units 24, 25 over High pressure lines 30, 31 is supplied. To vary the The cutting beams 26, 27 can have a cutting action via feed lines 42, 43 with abrasive agents. It is for the Cutting jets 26, 27 each have their own abrasive supply intended. In this way, the cutting rays can be 26, 27 in their cutting behavior to the requirements adapt to the respective application.
- the adaptation to different operating conditions serve the adjustment options resulting from the above explanations the cutting units 24, 25 by pivoting the cutting unit 25 about the pivot axis 35 the one enclosed by the cutting beams 26, 27 or the beam axes Change angle.
- the location of the intersection the cutting beams 26, 27 based on the plane of the Sheet 23 can be varied.
- a delivery option for the Cutting unit 25 offers opposite the surface of the sheet 23 the adjustability of the cutting unit 25 in the direction of Double arrow 41.
- An adjustment of the cutting unit 25 in the direction the double arrow 39 is with an adjustment of the cutting unit 25 connected in the direction of the double arrow 41, if so the position of the intersection of the cutting beams 26, 27 and Stranlachsen changed compared to the sheet 23, the distance of the beam exit at the cutting unit 25 from the metal sheet 23 but should remain the same.
- the processing machine is correct in its basic mode of operation 2 with the one shown in FIG. 1 and above described embodiment match. Both processing machines are of course also for machining workpieces suitable with a curved workpiece surface.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Laser Beam Processing (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Strahlschneiden von Werkstücken gemäß dem Oberbegriff von Patentanspruch 1. Des weiteren betrifft die Erfindung eine Bearbeitungsmaschine zur Durchführung eines derartigen Verfahrens gemäß dem Oberbegriff von Patentanspruch 9. The invention relates to a method for jet cutting Workpieces according to the preamble of claim 1. The invention further relates to a processing machine for performing such Method according to the preamble of claim 9.
Gattungsgemäße Verfahren sowie gattungsgemäße Bearbeitungsmaschinen, mittels derer sich die Verfahren umsetzen lassen, dienen beispielsweise dazu, Werkstücke abzulängen, mit einer vorgegebenen Kontur zuzuschneiden und/oder aus Werkstücken vorgegebene Konturen auszuschneiden.Generic methods and generic processing machines, by means of which the procedures can be implemented For example, to cut workpieces to a predetermined length Cut the contour and / or specified from workpieces Cut out contours.
Zu diesem Zweck werden nach bekannten Verfahren unter Einsatz bekannter Bearbeitungsmaschinen ein Schneidstrahl in Form eines Druckwasserstrahls und das zu bearbeitende Werkstück in Schneidstrahlquerrichtung relativ zueinander verschoben. Dabei stellt der Schneidstrahl einen Trennschnitt mit einer vorgegebenen Schnittlänge sowie einer vorgegebenen Schnittrichtung her. Zur Erhöhung der Bearbeitungskapazität ist es aus DE-U-94 11 021.2 bekannt, gattüngsgemäße Bearbeitungsmaschinen zu verwenden, welche wenigstens zwei mit zumindest einer Quelle für einen Schneidstrahl in Verbindung stehende und im Schneidbetrieb einen Schneidstrahl aussendende Schneideinheiten aufweisen, wobei die Schneideinheiten und das zu bearbeitende Werkstück in Schnittrichtung relativ zueinander bewegbar sind. Derartige Bearbeitungsmaschinen erlauben es, zeitlich parallelisiert mehrere Trennschnitte herzustellen. So können beispielsweise an Bearbeitungsmaschinen mit zwei Schneideinheiten zeitgleich zwei Werkstücke zugeschnitten werden. Die Schnittgeschwindigkeiten, mit denen sich nach dem bekannten Verfahren sowie unter Einsatz bekannter Bearbeitungsmaschinen Trennschnitte mit Schnittkanten hoher Qualität herstellen lassen, sind jedoch steigerungsbedürftig. For this purpose, known methods are used using known ones Processing machines a cutting beam in the form of a Pressurized water jet and the workpiece to be machined in the transverse direction of the cutting jet shifted relative to each other. It poses the cutting beam makes a separating cut with a predetermined one Cutting length and a specified cutting direction. For Increasing the processing capacity is known from DE-U-94 11 021.2, generic processing machines to use at least two with at least one Source for a cutting beam related and im Cutting unit emitting cutting beam have, wherein the cutting units and the to be machined Workpiece are movable relative to each other in the cutting direction. Processing machines of this type make it possible to parallelize them in time to make several separating cuts. For example on processing machines with two cutting units at the same time two workpieces can be cut. The cutting speeds, with which by the known method and using Known processing machines separating cuts with cut edges Have high quality manufactured, but need to be increased.
Beschrieben ist ein gattungsgemäßes Verfahren in DE 33 43 611 A1. Zur Erzeugung eines diskontinuierlichen Schneidstrahles werden im Falle des Standes der Technik zwei aus einer Doppelstrahldüse austretende Strahlen derart gegeneinander gelenkt, daß sie auf dem zu bearbeitenden Werkstück oder kurz davor aufeinander treffen.A generic method is described in DE 33 43 611 A1. For generation a discontinuous cutting beam in the case the prior art two emerging from a double jet nozzle Beams directed against each other in such a way that they are on the the workpiece to be machined or shortly before.
Aus DE 35 33 644 C1 sind ein Verfahren sowie eine Vorrichtung zum
Schneiden von flächigem Material mittels wenigstens zweier parallel
zueinander verlaufender Höchstdruck-Fluidstrahlen bekannt. Um
zwei oder mehr eigenständige Schneidvorgänge in einem Arbeitsgang
zusammenzufassen, wird dabei ein Schneidkopf mit mehreren hintereinander
liegenden Düsen durch einen gemeinsamen Antrieb entlang
der betreffenden Schnittlinie bewegt. Damit auch kleine Teile sowie
enge Kurven geschnitten werden können, werden die Schneidstrahlen
einander eng benachbart auf das zu bearbeitende Werkstück
gerichtet.
EP 0 207 069 A1 offenbart ein Verfahren sowie eine Vorrichtung zum Schneiden von Werkstücken mittels zweier Schneidstrahlen, die von einander gegenüberliegenden Seiten des zu bearbeitenden Werkstücks auf dieses gerichtet werden und etwa in der Materialmitte aufeinander treffen. EP 0 207 069 A1 discloses a method and an apparatus for cutting workpieces using two cutting beams, the opposite sides of the to be machined Workpiece to be aimed at this and approximately in the middle of the material meet each other.
Der Erfindung liegt nun die Aufgabe zugrunde, die bekannten Verfahren zum Strahlschneiden von Werkstücken sowie die bekannten Bearbeitungsmaschinen weiterzubilden. Dabei soll sich eine gute Qualität der Schnittkanten auch bei hoher Schnittgeschwindigkeit erzielen lassen.The invention is based on the object, the known methods for jet cutting workpieces and the known ones To further develop processing machines. It should be a good one Quality of the cut edges even at high cutting speeds let achieve.
Die genannte verfahrensbezogene Aufgabe wird erfindungsgemäß dadurch gelöst, daß im Rahmen eines Verfahrens der eingangs angegebenen Art die Schneidstrahlen derart auf das zu bearbeitende Werkstück gerichtet werden, daß sich die Strahlachsen unterhalb des Werkstückes schneiden und daß die Strahlachsen einander an der Schnittlinie unmittelbar benachbart verlaufen. Die Schnittebene wird gebildet von der Tangentialebene an das Werkstück in dem jeweiligen Bearbeitungspunkt. Bei der Entwicklung des erfindungsgemäßen Verfahrens wurde überraschenderweise festgestellt, daß sich mittels der angegebenen Verfahrensmaßnahmen das erzielbare Schneidergebnis wesentlich verbessern bzw. die Schneidgeschwindigkeit ohne Beeinträchtigung der Schnittqualität erhöhen läßt. Bei gegebener Schnittqualität ist eine Verdoppelung der Schnittgeschwindigkeit gegenüber herkömmlichen Strahlschneidverfahren ohne weiteres realisierbar. Ein gedankliches Modell zur Erklärung des beobachteten Phänomens geht davon aus, daß bei erfindungsgemäßem Einsatz zweier winkelig zueinander verlaufender Schneidstrahlen der eine Schneidstrahl den anderen stützt und daß dadurch die Schneidwirkung wenigstens eines der Schneidstrahlen verstärkt wird, indem aufgrund der Stützwirkung ein seitliches Ausbrechen des betreffenden Schneidstrahls gegenüber dem zu bearbeitenden Werkstück verhindert wird. Eine "unmittelbar benachbarte" Anordnung der Schneidstrahlen liegt im Sinne der Erfindung dann vor, wenn der Abstand der Auftreffpunkte der Schneidstrahlen an der Schnittlinie derart gering ist, daß die beschriebene Verstärkung der Schneidwirkung wenigstens eines der Schneidstrahlen erreicht wird. The process-related task mentioned is according to the invention solved in that within the scope of a method of the initially mentioned Type the cutting beams in such a way to the one to be processed Workpiece that the beam axes are below cut the workpiece and that the beam axes are immediately adjacent to each other on the cutting line run. The section plane is formed by the tangential plane to the workpiece in the respective machining point. When developing the method according to the invention was surprisingly found that by means of specified procedural measures the achievable cutting result significantly improve or the cutting speed without impairment the cut quality can be increased. Given Cutting quality is a doubling of the cutting speed compared to conventional jet cutting processes realizable. A conceptual model to explain the observed Phenomenon assumes that the inventive Use of two cutting beams running at an angle to each other one cutting beam supports the other and thereby the Cutting effect of at least one of the cutting beams is enhanced is caused by a lateral breakout due to the support effect of the cutting beam in question compared to the one to be processed Workpiece is prevented. An "immediately adjacent" arrangement the cutting rays are then within the meaning of the invention before when the distance of the points of incidence of the cutting beams the cutting line is so low that the reinforcement described the cutting action of at least one of the cutting beams is achieved.
Hervorragende Bearbeitungsergebnisse lassen sich dadurch erzielen, daß ein erster Schneidstrahl im wesentlichen senkrecht und ein zweiter Schneidstrahl unter einem von einem rechten Winkel abweichenden Winkel auf das Werkstück gerichtet wird. Alternativ können jedoch auch zwei Schneidstrahlen unter einem von einem rechten Winkel abweichenden Winkel auf das Werkstück gerichtet werden.Excellent machining results can be achieved that a first cutting beam is substantially perpendicular and a second cutting beam at a right angle deviating angle is directed at the workpiece. Alternatively but can also use two cutting beams under one of one right angle deviating angle directed at the workpiece become.
Eine weitere Verfahrensvariante ist dadurch gekennzeichnet, daß zwei Schneidstrahlen derart auf das Werkstück gerichtet werden, daß die Strahlachsen einen Winkel von weniger als 60° einschließen.Another process variant is characterized in that two cutting beams are directed onto the workpiece in such a way that the beam axes form an angle of less than 60 °.
Grundsätzlich lassen sich die Vorteile des erfindungsgemäßen Verfahrens mit Schneidstrahlen aus unterschiedlichen Schneidmedien erreichen. In bevorzugter Ausgestaltung des erfindungsgemäßen Verfahrens werden Schneidstrahlen in Form von vorzugsweise Abrasivmittel führenden Druckwasserstrahlen auf das Werkstück gerichtet. Dabei werden die Druckwasserstrahlen zweckmäßigerweise unter einem Druck von 2800 bar bis 3400 bar auf das Werkstück gerichtet. Eine bevorzugte Version des erfindungsgemäßen Verfahrens zeichnet sich dadurch aus, daß zum Anschneiden des Werkstücks lediglich ein Schneidstrahl und nach dem Anschneiden des Werkstücks ein weiterer Schneidstrahl auf das Werkstück gerichtet wird.Basically, the advantages of the method according to the invention can be with cutting jets from different cutting media to reach. In a preferred embodiment of the invention The process uses cutting jets in the form of preferably abrasive agents leading pressurized water jets aimed at the workpiece. The pressurized water jets are expediently under a pressure of 2800 bar to 3400 bar aimed at the workpiece. A preferred version of the method according to the invention draws is characterized in that only for cutting the workpiece a cutting beam and after cutting the workpiece Another cutting beam is aimed at the workpiece.
Zweckmäßigerweise werden dabei beim Anschneiden des Werkstücks der eine Schneidstrahl und das Werkstück mit verhältnismäßig geringer Relativgeschwindigkeit bewegt und wird die Relativgeschwindigkeit bis maximal auf die Schnitt-Endgeschwindigkeit erhöht, nachdem der weitere Schneidstrahl auf das Werkstück gerichtet worden ist. It is useful when cutting the workpiece the one cutting beam and the workpiece with relatively little Relative speed moves and becomes the relative speed increased up to the maximum cutting speed, after the further cutting beam is aimed at the workpiece has been.
Die eingangs genannte vorrichtungsbezogene Aufgabe wird nach der Erfindung dadurch gelöst, daß an gattungsgemäßen Bearbeitungsmaschinen die gleichzeitig im Schneidbetrieb befindlichen Schneideinheiten und das Werkstück entlang einer gemeinsamen Schnittlinie der Schneideinheiten relativ zueinander bewegbar sind, wobei die Schneideinheiten derart angeordnet und ausgerichtet sind, daß die Schneidstrahlen eine in Schnittrichtung verlaufende Schneidstrahlebene aufspannen, daß sich die Strahlachsen der Schneidstrahlen unterhalb des Werkstückes schneiden und daß die Strahlachsen einander an der Schnittlinie unmittelbar benachbart verlaufen.The device-related task mentioned at the outset becomes solved the invention in that on generic processing machines the cutting units simultaneously in the cutting operation and the workpiece can be moved relative to one another along a common cutting line of the cutting units, the cutting units being arranged and aligned in this way are that the cutting beams span a cutting beam plane running in the cutting direction, that the beam axes of the cutting beams cut underneath the workpiece and that the beam axes are directly at the intersection run adjacent.
Um eine Variierung der Ausrichtung der Schneidstrahlen zueinander zu ermöglichen, ist im Falle einer vorteilhaften Ausführungsform der erfindungsgemäßen Bearbeitungsmaschine vorgesehen, daß wenigstens eine Schneideinheit um eine im wesentlichen parallel zu der Schnittebene verlaufende Schwenkachse gegenüber der zugeordneten Schneideinheit schwenkbar und in der jeweiligen Schwenkstellung festlegbar ist. An einer derartigen Bearbeitungsmaschine lassen sich die Schneidstrahlen parallel zueinander oder unter veränderlichen Winkeln zueinander ausrichten. Dementsprechend kann die Bearbeitungsmaschine flexibel an unterschiedliche Einsatzerfordernisse angepaßt werden.To vary the alignment of the cutting beams to each other is to be made possible in the case of an advantageous embodiment the processing machine according to the invention provided that at least one cutting unit around a substantially parallel to the cutting plane running pivot axis opposite the assigned cutting unit pivotable and in the respective Swivel position is definable. Leave on such a processing machine the cutting beams are parallel to each other or under variable Align angles to each other. Accordingly, the Processing machine flexible to different application requirements be adjusted.
Eine weitere Möglichkeit zur Variierung des Verlaufs der Schneidstrahlen zueinander bietet eine Version der erfindungsgemäßen Bearbeitungsmaschine, an der die Schneideinheiten im wesentlichen parallel zu der Schnittebene in Schnittrichtung, relativ zueinander verschiebbar angebracht sind.Another possibility to vary the course of the cutting beams to each other, a version of the processing machine according to the invention offers where the cutting units essentially parallel to the cutting plane in the cutting direction, are slidably mounted relative to each other.
Im Schneidbetrieb nehmen die Schneidstrahlen zweckmäßigerweise eine bestimmte Lage bezogen auf die Schnittrichtung ein. Dabei wird die Position der Schneidstrahlen gegenüber der Schnittrichtung definiert durch den Verlauf der durch die Schneidstrahlen aufgespannten Schneidstrahlebene gegenüber der Schnittrichtung. Soll nun die Schnittrichtung geändert werden, so ist die Position der Schneidstrahlen gegenüber der geänderten Schnittrichtung beizubehalten. Zu diesem Zweck ist die Schneidstrahlebene gegenüber dem Werkstück zu verlagern. Eine derartige Verlagerung der Schneidstrahlebene wird bei einer bevorzugten Ausführungsform der erfindungsgemäßen Bearbeitungsmaschine dadurch ermöglicht, daß wenigstens eine Schneideinheit um eine im wesentlichen senkrecht zu der Schnittebene verlaufende Dreh-Schwenk-Achse relativ zu dem Werkstück drehschwenkbar ist. Eine Änderung der Schnittrichtung sowie eine damit verbundene Drehschwenkbewegung wenigstens einer Schneideinheit kann dabei sowohl im laufenden Schneidbetrieb als auch nach Fertigstellung eines Trennschnitts vorgenommen werden. Im erstgenannten Fall ergibt sich ein kurvenförmiger Trennschnitt, im zweitgenannten Fall kann an den fertigen Trennschnitt ein davon ausgehender und winkelig dazu verlaufender weiterer Trennschnitt angesetzt werden.The cutting beams expediently take in the cutting operation a certain position in relation to the cutting direction. there the position of the cutting beams in relation to the cutting direction defined by the course of the cutting rays spanned cutting beam plane opposite the cutting direction. If the cutting direction is now to be changed, the position is to maintain the cutting beams in relation to the changed cutting direction. To this The purpose is to shift the cutting beam plane relative to the workpiece. Such a shift in the cutting beam plane is at a preferred embodiment of the processing machine according to the invention thereby allowing at least one cutting unit around a substantially perpendicular to the cutting plane Rotation-swivel axis rotatable relative to the workpiece is. A change in the cutting direction and a related one Rotary pivoting movement of at least one cutting unit can both in the current cutting operation and after completion of a separating cut. In the former In this case there is a curved cut, in the second Fall can be based on the finished separation cut and another separation cut running at an angle to it become.
Eine kompakte Bearbeitungsmaschine ergibt sich, wenn die Schneideinheiten an einem gemeinsamen Schneidkopf der Bearbeitungsmaschine vorgesehen sind.A compact processing machine results when the cutting units on a common cutting head of the processing machine are provided.
Eine bevorzugte Ausführungsform der erfindungsgemäßen Bearbeitungsmaschine, an der als Schneideinheiten Druckwassereinheiten vorgesehen sind, zeichnet sich dadurch aus, daß für jeden Druckwasserstrahl eine Abrasivmittelversorgung vorgesehen ist. Dadurch lassen sich die Schneidstrahlen in ihrem Schneidverhalten unabhängig voneinander modifizieren.A preferred embodiment of the processing machine according to the invention, on the pressurized water units as cutting units are provided, characterized in that for each jet of pressurized water an abrasive supply is provided. Thereby the cutting beams can be independent in their cutting behavior modify each other.
Der Flexibilisierung der Werkstückbearbeitung dient es ebenfalls, daß die Schneideinheiten, wie in Weiterbildung der Erfindung vorgesehen, getrennt mit der zugeordneten Quelle für den Schneidstrahl verbindbar sind. In Abhängigkeit von den Erfordernissen des konkreten Einsatzfalles bzw. in Abhängigkeit von der jeweiligen Phase des Schneidvorganges lassen sich die Schneideinheiten gemeinsam oder einzeln schneidend betreiben. It also serves to make workpiece machining more flexible, that the cutting units, as provided in a development of the invention, separately with the assigned source for the cutting beam are connectable. Depending on the requirements the specific application or depending on the respective The cutting units can be phase of the cutting process operate together or individually.
Eine Voraussetzung für eine automatisierte Werkstückbearbeitung wird dadurch geschaffen, daß die Schneideinheiten mittels einer Zuschaltsteuerung gesteuert mit der zugeordneten Quelle für den Schneidstrahl verbindbar sind.A prerequisite for automated workpiece processing is created in that the cutting units by means of a Connection control controlled with the assigned source for the Cutting beam can be connected.
Erfindungsgemäße Bearbeitungsmaschinen, deren Schneideinheiten getrennt und/oder mittels einer Zuschaltsteuerung gesteuert mit der zugeordneten Quelle für den Schneidstrahl verbindbar sind, werden beispielsweise auch zur Umsetzung derjenigen Variante des erfindungsgemäßen Verfahrens eingesetzt, bei der das zu bearbeitende Werkstück mit lediglich einem Schneidstrahl angeschnitten und danach mit zwei Schneidstrahlen weiterbearbeitet wird.Processing machines according to the invention, their cutting units separately and / or controlled by means of a connection control the associated source for the cutting beam can be connected, are also used, for example, to implement that variant of the used method according to the invention, in which the to be processed Cut the workpiece with just one cutting beam and then further processed with two cutting beams.
Eine weitere bevorzugte Ausführungsform einer erfindungsgemäßen Bearbeitungsmaschine, die mit einer Geschwindigkeitssteuerung zur Steuerung der Relativgeschwindigkeit zwischen den Schneideinheiten und dem Werkstück versehen ist, zeichnet sich dadurch aus, daß mittels der Geschwindigkeitssteuerung die Relativgeschwindigkeit zwischen den Schneideinheiten und dem Werkstück in Abhängigkeit von der Anzahl der einen Schneidstrahl auf das Werkstück richtenden Schneideinheiten und/oder der Dauer der Zuschaltung der Schneideinheiten gesteuert ist. Eine derartige Bearbeitungsmaschine ist ebenfalls vorzugsweise für den vorstehend beschriebenen Zweiphasen-Schneidbetrieb bestimmt. In der Anschneidphase, in der lediglich ein Schneidstrahl auf das Werkstück gerichtet ist, wird über die Geschwindigkeitssteuerung eine verhältnismäßig niedrige Relativgeschwindigkeit zwischen der im Schneidbetrieb befindlichen Schneideinheit und dem Werkstück eingestellt. In dieser Phase arbeitet die erfindungsgemäße Bearbeitungsmaschine nach dem herkömmlichen Bearbeitungsverfahren, demgemäß der Trennschnitt mittels eines einzigen Bearbeitungsstrahls hergestellt wird. Nach Beendigung des Anschnitts erreicht auch der dem Schneidstrahl der ersten Schneideinheit nacheilende Schneidstrahl der zweiten Schneideinheit das Werkstück. Nunmehr läßt sich die Schnittgeschwindigkeit erhöhen. Da der nach dem Anschnitt das Werkstück erreichende zweite Schneidstrahl seine volle Wirksamkeit nicht bereits mit dem Erreichen des Werkstücks entfaltet, ist es zweckmäßig, daß die Schnittgeschwindigkeit, also die Relativgeschwindigkeit zwischen den Schneideinheiten und dem Werkstück nicht abrupt sondern vielmehr allmählich erhöht wird, sobald die zweite Schneideinheit das Werkstück erreicht hat. Dies wird mittels der Geschwindigkeitssteuerung bewerkstelligt, welche die Relativgeschwindigkeit zwischen Schneideinheiten und Werkstück nach dem Wirksamwerden der zweiten Schneideinheit nach und nach steigert. Bei entsprechender Steuerung der Schneideinheiten kann an der erfindungsgemäßen Bearbeitungsmaschine die zweite nacheilende Schneideinheit erst nach Beendigung des Anschnitts durch die voreilende erste Schneideinheit mit der zugeordneten Quelle für den Schneidstrahl verbunden werden. In diesem Fall wird während der Anschnittphase lediglich von einer Schneideinheit ein Schneidstrahl ausgesandt.Another preferred embodiment of an inventive Processing machine with a speed control for Control of the relative speed between the cutting units and the workpiece is characterized by that by means of the speed control, the relative speed between the cutting units and the workpiece on the number of a cutting beam on the workpiece directing cutting units and / or the duration of the connection the cutting units is controlled. Such a processing machine is also preferred for the one described above Two-phase cutting operation determined. In the cutting phase, in which only a cutting beam is aimed at the workpiece is a proportionate speed control low relative speed between that in the cutting operation located cutting unit and the workpiece. In The processing machine according to the invention operates in this phase according to the conventional machining process, accordingly the separating cut produced by means of a single processing beam becomes. At the end of the first cut, he also reaches the Cutting beam of the first cutting unit lagging cutting beam the second cutting unit the workpiece. Now you can Increase cutting speed. Since the after the first cut Second cutting beam reaching the workpiece is fully effective not already unfolded when the workpiece is reached, it is expedient that the cutting speed, ie the relative speed between the cutting units and the workpiece not abruptly, but rather gradually increased as soon as the second cutting unit has reached the workpiece. This is accomplished by means of the speed control, which the relative speed between cutting units and workpiece after the second cutting unit takes effect and after increases. With appropriate control of the cutting units can the second on the processing machine according to the invention lagging cutting unit only after completion of the gate by the leading first cutting unit with the assigned Source for the cutting beam to be connected. In this case is only used by one cutting unit during the gate phase a cutting beam is sent out.
Die Erfindung wird nachfolgend anhand schematischer Darstellungen zu Ausführungsbeispielen der erfindungsgemäßen Bearbeitungsmaschine näher erläutert. Es zeigen:
- Figur 1
- den Schneidkopf einer Wasserstrahl-Schneidmaschine mit einem Schneidkopf mit integrierten Schneideinheiten und
Figur 2- den Schneidkopf einer Wasserstrahl-Schneidmaschine mit einem Schneidkopf mit separaten Schneideinheiten.
- Figure 1
- the cutting head of a water jet cutting machine with a cutting head with integrated cutting units and
- Figure 2
- the cutting head of a water jet cutting machine with a cutting head with separate cutting units.
In Figur 1 dargestellt ist ein Schneidkopf 1 einer Wasserstrahl-Schneidmaschine,
der in Richtung eines Pfeils 2 relativ zu einem
ortsfesten Werkstück in Form einer Blechtafel 3 verschoben wird.
Der Schneidkopf 1 ist an dem die Blechtafel 3 portalartig übergreifenden
Träger eines Maschinenschlittens angebracht. Der Maschinenschlitten
kann an der Blechtafel 3 entlang verfahren werden.
Gleichzeitig läßt sich der Schneidkopf 1 in Längsrichtung
des Trägers und somit in Querrichtung der Verfahrrichtung des Maschinenschlittens
gesteuert bewegen. Dementsprechend kann der
Schneidkopf 1 jeden Punkt in der Blechtafelebene erreichen.1 shows a cutting head 1 of a water jet cutting machine,
that in the direction of an
In den Schneidkopf 1 integriert sind zwei Schneideinheiten 4, 5,
welche die Blechtafel 3 im Schneidbetrieb mit Schneidstrahlen 6,
7 in Form von Hochdruckwasserstrahlen beaufschlagen, deren
Strahlachsen sich unterhalb der Schnittebene schneiden. Dabei
richtet die Schneideinheit 4 ihren Schneidstrahl 6 unter einem im
wesentlichen rechten Winkel auf die Oberfläche der Blechtafel 3.
Der von der Schneideinheit 5 ausgesandte Schneidstrahl 7 verläuft
unter einem von einem rechten Winkel abweichenden Winkel gegenüber
der Werkstückoberfläche. Die Schneidstrahlen 6, 7 bzw. deren
Strahlachsen spannen eine senkrecht zu der Blechtafel 3 verlaufende
Schneidstrahlebene auf. Integrated in the cutting head 1 are two cutting
An der der Blechtafel 3 abgewandten Seite sind die Schneideinheiten
4, 5 über Anschlüsse 8, 9 und in Figur 1 angedeutete Hochdruckleitungen
10, 11 mit jeweils einer Hochdruckpumpe verbunden.
Der gesamte Schneidkopf 1 kann um eine in Richtung der Strahlachse
des Schneidstrahls 6 verlaufende Dreh-Schwenk-Achse 12 in
Richtung eines Pfeils 13 verschwenkt werden.The cutting units are on the side facing away from the
Soll nun mittels des Schneidkopfs 1 ein Trennschnitt in die
Blechtafel 3 eingebracht werden, so werden die Schneideinheiten
4, 5 mit der Hochdruckpumpe verbunden. Der von der Schneideinheit
4 ausgesandte Schneidstrahl 6 eilt dem von der Schneideinheit 5
ausgesandten Schneidstrahl 7 in Schnittrichtung, das heißt, in
Richtung des Pfeils 2. voraus. Der von der Schneideinheit 4 ausgesandte
Schneidstrahl 6 durchdringt die Blechtafel 3 und stellt
unter Verfahren des Schneidkopfs 1 in die durch den Pfeil 2 symbolisierte
Schnittrichtung den Anschnitt her. Sobald der Anschnitt
fertiggestellt ist, erreicht der von der Schneideinheit 5
ausgesandte Schneidstrahl 7 ebenfalls die Blechtafel 3. Nachdem
der Schneidstrahl 7 die Blechtafel 3 erreicht hat, wird die Verfahrgeschwindigkeit
des Schneidkopfs 1 gegenüber der Blechtafel 3
ausgehand von einer relativ niedrigen Anschnittgeschwindigkeit
bis auf Schnitt-Endgeschwindigkeit erhöht. Auch während des nachfolgenden
Schneidvorgangs ist der von der Schneideinheit 4 ausgehende
Schneidstrahl 6 dem Schneidstrahl 7 in Schnittrichtung 2
vorauseilend auf die Blechtafel 3 gerichtet. Die von den Schneidstrahlen
6, 7 aufgespannte Schneidstrahlebene verläuft in Schnittrichchtung.
Der Druck der Schneidstrahlen 6, 7 beträgt rund 3000
bar. Now, a cutting cut into the by means of the cutting head 1
Zum Andern der Schnittrichtung wird der Schneidkopf 1 um die
Dreh-Schwenk-Achse 12 verschwenkt. Auf diese Art und Weise können
mittels der dargestellten Schneidmaschine kurvenförmige Trennschnitte
ebenso hergestellt werden wie unter einem Winkel aneinanderstoßende
geradlinige Trennschnitte.To change the cutting direction, the cutting head 1 by
Swivel-
Die in Figur 2 teilweise dargestellte Schneidmaschine besitzt einen
Schneidkopf 21 mit zwei separaten Schneideinheiten 24, 25.
Entlang eines Trägers 34 eines Maschinenschlittens ist der
Schneidkopf 21 in Richtung eines die Schnittrichtung symbolisierenden
Pfeiles 22 gegenüber einem Werkstück in Form einer Blechtafel
23 motorisch angetrieben bewegbar. Gleichzeitig kann der
Maschinenschlitten senkrecht zu der Zeichenebene gemäß Figur 2
verfahren werden.The cutting machine partially shown in Figure 2 has one
Die Schneideinheiten 24, 25 sind um eine im wesentlichen parallel
zu der Ebene der Blechtafel 23, das heißt zu der Schnittebene,
verlaufende Schwenkachse 35 schwenkbar miteinander verbunden. Zur
Herstellung der Schwenkverbindung dienen klammerartige Halterungen
36, 37 welche die Schneideinheiten 24, 25 umschließen. Mittels
eines Spindeltriebs 38 ist die Schneideinheit 25 im Innern
ihrer Halterung 37 in Richtung eines Doppelpfeils 39 zustellbar.
Zusätzlich kann die Schneideinheit 25 in Richtung eines Doppelpfeils
41 verschoben werden, Die Halterung 36, welche die
Schneideinheit 24 umgreift, kann in Richtung eines Doppelpfeils
40 im wesentlichen senkrecht zu der Ebene der Blechtafel 23 zugestellt
werden. Um eine Dreh-Schwenk-Achse 32 läßt sich der gesamte
Schneidkopf 21 in Richtung eines Doppelpfeils 33 motorisch
verschwenken.The cutting
Im Schneidbetrieb richten die Schneideinheiten 24, 25 in Figur 2
lediglich angedeutete Schneidstrahlen 26, 27 auf die Oberfläche
der Blechtafel 23. Dabei verläuft der Schneidstrahl 26 der
Schneideinheit 24 im wesentlichen senkrecht zu der Werkstückoberfläche:
der Schneidstrahl 27 der Schneideinheit 25 schließt mit
der Werkstückoberfläche einen von einem rechten Winkel abweichenden
Winkel ein. Die beiden Schneidstrahlen 26, 27 schneiden sich
in der Schnittebene und spannen eine in Schnittrichtung, das
heißt in Richtung des Pfeils 22 verlaufende Schneidstrahlebene
auf.In the cutting operation, the cutting
Erzeugt werden die Schneidstrahlen 26, 27 mittels unter Druck
stehendem Schneidwasser, das den Schneideinheiten 24, 25 über
Hochdruckleitungen 30, 31 zugeführt wird. Zur Variierung der
Schneidwirkung können die Schneidstrahlen 26, 27 über Zuleitungen
42, 43 mit Abrasivmittel beaufschlagt werden. Dabei ist für die
Schneidstrahlen 26, 27 jeweils eine eigene Abrasivmittelversorgung
vorgesehen. Auf diese Art und Weise lassen sich die Schneidstrahlen
26, 27 in ihrem Schneidverhalten an die Erfordernisse
des jeweiligen Einsatzfalles anpassen.The cutting beams 26, 27 are generated by means of under pressure
standing cutting water, which the cutting
Ebenfalls der Anpassung an unterschiedliche Einsatzbedingungen
dienen die sich aus den vorstehenden Ausführungen ergebenden Verstellmöglichkeiten
der Schneideinheiten 24, 25. So läßt sich
durch Verschwenken der Schneideinheit, 25 um die Schwenkachse 35
der von den Schneidstrahlen 26, 27, bzw. den Strahlachsen eingeschlossene
Winkel verändern. Durch Verfahren der Schneideinheit
25 in Richtung des Doppelpfeils 39 kann die Lage des Schnittpunkts
der Schneidstrahlen 26, 27 bezogen auf die Ebene der
Blechtafel 23 variiert werden. Eine Zustellmöglichkeit für die
Schneideinheit 25 gegenüber der Oberfläche der Blechtafel 23 bietet
die Verstellbarkeit der Schneideinheit 25 in Richtung des
Doppelpfeils 41. Eine Verstellung der Schneideinheit 25 in Richtung
des Doppelpfeils 39 wird mit einer Verstellung der Schneideinheit
25 in Richtung des Doppelpfeils 41 verbunden, sofern zwar
die Lage des Schnittpunkts der Schneidstrahlen 26, 27 bzw. der
Stranlachsen gegenuber der Blechtafel 23 verändert, der Abstand
des Strahlaustritts an der Schneideinheit 25 von der Blechtafel
23 aber gleichbleiben soll.Also the adaptation to different operating conditions
serve the adjustment options resulting from the above explanations
the cutting
In ihrer grundsätzlichen Arbeitsweise stimmt die Bearbeitungsmaschine
gemäß Figur 2 mit der in Figur 1 gezeigten und vorstehend
beschriebenen Ausführungsform überein. Beide Bearbeitungsmaschinen
sind selbstverständlich auch zur Bearbeitung von Werkstücken
mit gekrümmter Werkstückoberfläche geeignet.The processing machine is correct in its basic mode of
Claims (17)
- Method for fluid-jet-cutting workpieces (3, 23) by means of at least two cutting jets (6, 7, 26, 27) in the form of pressure medium jets, the cutting jets (6, 7, 26, 27) being directed towards the workpiece (3, 23) to be processed starting from one and the same side of the workpiece (3, 23) to be processed and having intersecting jet axes, and the workpiece (3, 23) and the cutting jets (6, 7, 26, 27) being moved relative to each other in the transverse direction of the cutting jets (6, 7, 26, 27), and the cutting jets (6, 7, 26, 27) defining a cutting-jet plane which extends in the cutting direction (2, 22), characterised in that the cutting jets (6, 7, 26, 27) are directed towards the workpiece (3, 23) to be processed in such a manner that the jet axes intersect with each other below the workpiece and that the jet axes extend immediately adjacent to each other at the line of cutting.
- Method according to claim 1, characterised in that a first cutting jet (6, 26) is directed towards the workpiece (3, 23) substantially perpendicularly and a second cutting jet (7, 27) is directed towards the workpiece (3, 23) at an angle which deviates from the perpendicular.
- Method according to claim 1, characterised in that two cutting jets are directed towards the workpiece at an angle which deviates from the perpendicular.
- Method according to any one of claims 1 to 3, characterised in that two cutting jets (6, 7, 26, 27) are directed towards the workpiece (3, 23) in such a manner that the jet axes enclose an angle of less than 60°.
- Method according to any one of claims 1 to 4, characterised in that cutting jets (6, 7, 26, 27) in the form of pressurised water jets, which preferably carry abrasive media, are directed towards the workpiece (3, 23).
- Method according to claim 5, characterised in that the pressurised water jets (6, 7, 26, 27) are directed towards the workpiece (3, 23) at a pressure of from 2800 bar to 3400 bar.
- Method according to any one of claims 1 to 6, characterised in that only one cutting jet (6, 26) is directed towards the workpiece (3, 23) for the initial cutting of the workpiece (3, 23) and another cutting jet (7, 27) is directed towards the workpiece (3, 23) after the initial cutting of the workpiece (3, 23).
- Method according to claim 7, characterised in that, during the initial cutting of the workpiece (3, 23), the first cutting jet (6, 26) and the workpiece (3, 23) are moved at a relatively low relative speed, and in that the relative speed is increased up to the maximum final cutting speed after the other cutting jet (7, 27) has been directed towards the workpiece (3, 23).
- Processing machine for carrying out the method according to at least one of claims 1 to 8, having at least two cutting units (4, 5, 24, 25) which are arranged at one and the same side of the workpiece (3, 23) to be processed, which are connected to at least one source for a cutting jet (6, 7, 26, 27) in the form of a pressure-medium jet and which, during cutting operation, each emit a cutting jet (6, 7, 26, 27) in the form of a pressure-medium jet, the cutting units (4, 5, 24, 25) which are simultaneously in cutting operation and the workpiece (3, 23) to be processed being movable relative to each other in the cutting direction (2, 22), characterised in that the cutting units (4, 5, 24, 25) which are simultaneously in cutting operation and the workpiece (3, 23) can be moved relative to each other along a common line of cutting of the cutting units (4, 5, 24, 25), the cutting units (4, 5, 24, 25) being arranged and aligned in such a manner that the cutting jets (6, 7, 26, 27) define a cutting-jet plane which extends in the cutting direction (2, 22), that the jet axes of the cutting jets (6, 7, 26, 27) intersect with each other below the workpiece and that the jet axes extend immediately adjacent to each other at the line of cutting.
- Processing machine according to claim 9, characterised in that at least one cutting unit (24, 25) can pivot about a pivot axis (35), which extends substantially parallel with the cutting plane, relative to the associated cutting unit (24, 25) and can be fixed in the respective pivot position.
- Processing machine according to claim 9 or claim 10, characterised in that the cutting units (24, 25) are fitted in a displaceable manner relative to each other in the cutting direction (22) substantially parallel with the cutting plane.
- Processing machine according to any one of claims 9 to 11, characterised in that at least one cutting unit (4, 5, 24, 25) can pivot and rotate about a pivoting and rotating axis (12, 32), which extends substantially perpendicularly to the cutting plane, relative to the workpiece (3, 23).
- Processing machine according to any one of claims 9 to 12, characterised in that the cutting units (4, 5) are provided on a common cutting head (1) of the processing machine.
- Processing machine according to any one of claims 9 to 13, wherein pressurised water units are provided as the cutting units (4, 5, 24, 25), characterised in that one abrasive medium supply is provided for each pressurised water jet.
- Processing machine according to any one of claims 9 to 14, characterised in that the cutting units (4, 5, 24, 25) can be connected separately to the associated source for the cutting jet (6, 7, 26, 27).
- Processing machine according to any one of claims 9 to 15, characterised in that the cutting units (4, 5, 24, 25) can be connected in a controlled manner to the associated source for the cutting jet (6, 7, 26, 27) by means of a connection control.
- Processing machine according to any one of claims 9 to 16, having a speed control for controlling the relative speed between the cutting units (4, 5, 24, 25) and the workpiece (3, 23), characterised in that the relative speed between the cutting units (4, 5, 24, 25) and the workpiece (3, 23) is controlled by means of the speed control dependent on the number of cutting units (4, 5, 24, 25), which direct a cutting jet (6, 7, 26, 27) towards the workpiece (3, 23), and/or the duration of the connection of the cutting units (4, 5, 24, 25).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4440631 | 1994-11-14 | ||
| DE4440631A DE4440631C2 (en) | 1994-11-14 | 1994-11-14 | Method and processing machine for beam cutting workpieces using at least two cutting beams |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0711633A2 EP0711633A2 (en) | 1996-05-15 |
| EP0711633A3 EP0711633A3 (en) | 1996-06-05 |
| EP0711633B1 true EP0711633B1 (en) | 2001-11-28 |
Family
ID=6533279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95115843A Expired - Lifetime EP0711633B1 (en) | 1994-11-14 | 1995-10-07 | Method and processing machine for fluid jet cutting of workpieces |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US5605492A (en) |
| EP (1) | EP0711633B1 (en) |
| JP (1) | JPH08229900A (en) |
| DE (1) | DE4440631C2 (en) |
Families Citing this family (64)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5782673A (en) * | 1996-08-27 | 1998-07-21 | Warehime; Kevin S. | Fluid jet cutting and shaping system and method of using |
| EP0863275A3 (en) * | 1997-03-07 | 1998-10-21 | JENOPTIK Aktiengesellschaft | Method and apparatus for removing wall joints |
| US6382292B1 (en) | 1997-03-27 | 2002-05-07 | Canon Kabushiki Kaisha | Method and apparatus for separating composite member using fluid |
| NL1007589C1 (en) * | 1997-11-20 | 1999-05-25 | Tno | Method and device for machining a workpiece. |
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- 1995-11-10 JP JP7292773A patent/JPH08229900A/en active Pending
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| US5068513A (en) * | 1990-09-28 | 1991-11-26 | Beloit Corporation | Water jet slitter with laser finish and method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4440631A1 (en) | 1996-05-15 |
| US5605492A (en) | 1997-02-25 |
| EP0711633A3 (en) | 1996-06-05 |
| JPH08229900A (en) | 1996-09-10 |
| US5759086A (en) | 1998-06-02 |
| EP0711633A2 (en) | 1996-05-15 |
| DE4440631C2 (en) | 1998-07-09 |
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