WO1999063411A1 - Programming the spatial cutting coordinates of water jet cutting devices - Google Patents

Programming the spatial cutting coordinates of water jet cutting devices Download PDF

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Publication number
WO1999063411A1
WO1999063411A1 PCT/EP1999/003470 EP9903470W WO9963411A1 WO 1999063411 A1 WO1999063411 A1 WO 1999063411A1 EP 9903470 W EP9903470 W EP 9903470W WO 9963411 A1 WO9963411 A1 WO 9963411A1
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WO
WIPO (PCT)
Prior art keywords
cutting
water jet
spatial
coordinates
programming
Prior art date
Application number
PCT/EP1999/003470
Other languages
German (de)
French (fr)
Inventor
Joachim Kalinka
Original Assignee
Hp-Chemie Research And Development Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hp-Chemie Research And Development Ltd. filed Critical Hp-Chemie Research And Development Ltd.
Publication of WO1999063411A1 publication Critical patent/WO1999063411A1/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/42—Recording and playback systems, i.e. in which the programme is recorded from a cycle of operations, e.g. the cycle of operations being manually controlled, after which this record is played back on the same machine
    • G05B19/423—Teaching successive positions by walk-through, i.e. the tool head or end effector being grasped and guided directly, with or without servo-assistance, to follow a path
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/36—Nc in input of data, input key till input tape
    • G05B2219/36415—Adjust path and attitude tool by detecting path, line with a photosensor, laser
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/45—Nc applications
    • G05B2219/45036—Waterjet cutting
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/49—Nc machine tool, till multiple
    • G05B2219/49371—Variable laser spot width, small for boundary, large for rest

Definitions

  • the cutting device is programmed in a way that does not always ensure the optimal angle of incidence and the distance of the water jet cutting device.
  • the water jet cutting device on the object to be manufactured in different To lead distances to this the use of the needle does not result in the jet cone which is obtained during the actual water jet cutting.
  • the object of the present invention is therefore to simplify the programming of the spatial cutting coordinates of water jet cutting devices.
  • the aforementioned object is achieved by a device for programming the spatial cutting coordinates of water jet cutting devices, consisting of a light source 1 and a focusing device 2 for the emerging light beam in an adapter piece 3, which corresponds to the spatial size of the water jet cutting nozzle.
  • the cutting surface becomes larger or smaller, whereby coarser or finer holes are obtained during water jet cutting.
  • an extremely precise programming of the spatial cutting coordinates of water jet cutting devices can thus be carried out, the post-corrections on the finished part which have been customary up to now usually makes it superfluous.
  • the device according to the invention is therefore particularly suitable for contactless programming of the spatial cutting coordinates of water jet cutting devices.
  • the recording of the spatial cutting coordinates can be carried out using recording devices that have been customary to date.
  • input into a data processing system is particularly preferred. If the cutting edges on the model object are particularly marked, for example by special coloring, it is also possible with the aid of the present invention to carry out the programming of the spatial cutting coordinates of water jet cutting devices fully automatically. This results in a considerable time saving potential.

Abstract

The invention relates to a device and a method for programming the spatial cutting coordinates of water jet cutting devices. The device consists of a light source and a focusing device (2) for an emitted beam of light in an adapter (3), whereby said adapter corresponds to the spatial dimensions of the water jet cutting nozzle.

Description

PROGRAMMIERUNG DER RÄUMLICHEN SCHNEIDKOORDINATEN VON WASSERSTRAHLSCHNEIDVORRICHTUNGEN PROGRAMMING SPATIAL CUTTING COORDINATES OF WATERJET CUTTING DEVICES
Gegenstand der Erfindung ist eine Vorrichtung und ein Verfahren zur Programmierung der räumlichen Schneidkoordinaten von Wasserstrahlschneidvorrichtungen.The invention relates to a device and a method for programming the spatial cutting coordinates of water jet cutting devices.
Wasserstrahlschneidvorrichtungen sind im Stand der Technik, beispielsweise im Automobilbau sehr verbreitet. So werden beispielsweise Teppichböden, Vliese und Folien häufig mit Hochdruckwasserstrahlen geschnitten.Water jet cutting devices are very common in the prior art, for example in automobile construction. For example, carpets, nonwovens and foils are often cut with high pressure water jets.
Die räumlichen Schneidkoordinaten der Wasserstrahlvorrichtungen werden üblicherweise mit einem Adapterstück an einem Modellgegenstand bestimmt. In dieses Adapterstück wird eine Nadel definierter Länge eingesetzt, wobei dieses Adapterstück in den Roboterarm der üblicherweise freibeweglichen Wasserschneidvorrichtung eingesetzt wird.The spatial cutting coordinates of the water jet devices are usually determined using an adapter piece on a model object. A needle of a defined length is inserted into this adapter piece, this adapter piece being inserted into the robot arm of the usually freely movable water cutting device.
Beispielsweise an einem Gipsmodell des Teppichbodens werden die Schneidkoordinaten dadurch bestimmt, daß man in kurzen Abständen, beispielsweise 3 bis 4 mm, die Nadel in der gewünschten Schneidrichtung mit dem Modell in Kontakt bringt und so die entsprechenden Koordinaten für die Steuerung der Wasserstrahl- schneidvorrichtung aufnimmt.For example, on a plaster model of the carpet, the cutting coordinates are determined by bringing the needle into contact with the model in the desired cutting direction at short intervals, for example 3 to 4 mm, and thus recording the corresponding coordinates for controlling the water jet cutting device.
Dieses Verfahren wird insbesondere im Bereich der Automobilzulieferindustrie sehr häufig angewandt, ist jedoch äußerst zeitaufwendig, da die Nadel mit hoher Genauigkeit geführt werden muß. Ein besonderes Problem besteht darin, daß die Nadel leicht verbiegt, wodurch eine Ungenauigkeit der Koordinatenfestlegung unvermeidlich wird. Darüber hinaus wird dabei die Schneidvorrichtung in einer Weise programmiert, die nicht immer den optimalen Auftreffwinkel und den Abstand der Wasserstrahlschneidvorrichtung gewährleistet. Insbesondere, wenn es aufgrund der Geometrie oder sonstiger Umstände erforderlich ist, die Wasser- strahlschneidvorrichtung an dem herzustellenden Gegenstand in unterschiedlichen Abständen zu diesem zu führen, so ergibt die Verwendung der Nadel nicht den Strahlkegel wieder, der beim eigentlichen Wasserstrahlschneiden erhalten wird.This method is used very frequently, in particular in the field of the automotive supply industry, but is extremely time-consuming since the needle has to be guided with high accuracy. A particular problem is that the needle bends slightly, making inaccuracy in coordinate setting inevitable. In addition, the cutting device is programmed in a way that does not always ensure the optimal angle of incidence and the distance of the water jet cutting device. In particular, if it is necessary due to the geometry or other circumstances, the water jet cutting device on the object to be manufactured in different To lead distances to this, the use of the needle does not result in the jet cone which is obtained during the actual water jet cutting.
Die Aufgabe der vorliegenden Erfindung besteht somit darin, die Programmierung der räumlichen Schneidkoordinaten von Wasserstrahlschneidvorrichtungen zu vereinfachen.The object of the present invention is therefore to simplify the programming of the spatial cutting coordinates of water jet cutting devices.
In einer ersten Ausführungsform der vorliegenden Erfindung wird die vorgenannte Aufgabe gelöst durch eine Vorrichtung zur Programmierung der räumlichen Schneidkoordinaten von Wasserstrahlschneidvorrichtungen, bestehend aus einer Lichtquelle 1 und einer Fokussiereinrichtung 2 für den austretenden Lichtstrahl in einem Adapterstück 3, das der räumlichen Größe der Wasserstrahlschneiddüse entspricht.In a first embodiment of the present invention, the aforementioned object is achieved by a device for programming the spatial cutting coordinates of water jet cutting devices, consisting of a light source 1 and a focusing device 2 for the emerging light beam in an adapter piece 3, which corresponds to the spatial size of the water jet cutting nozzle.
In der Figur ist eine entsprechende Vorrichtung dargestellt. Die Lichtquelle 1 , hier ein Laser, ist zusammen mit der Fokussiereinrichtung 2 in einem Adapterstück 3 integriert, das der räumlichen Größe der Wasserstrahlschneiddüse entspricht. Das Adapterstück 3 wird anstelle der Wasserstrahldüse in den Roborterarm eingesetzt.A corresponding device is shown in the figure. The light source 1, here a laser, is integrated together with the focusing device 2 in an adapter piece 3, which corresponds to the spatial size of the water jet cutting nozzle. The adapter piece 3 is used in the robot arm instead of the water jet nozzle.
Besonders bevorzugt im Sinne der vorliegenden Erfindung wird als Lichtquelle 1 eine Laserlichtquelle, beispielsweise ein handelsüblicher Taschenlaser eingesetzt. Als Fokussiereinrichtung 2 dient vorzugsweise eine Linse 4 und eine Lochscheibe 5, wobei die Öffnung der Lochscheibe 5 (beispielsweise mit einer Öffnung eines Durchmessers von 0,2 mm) und der Abstand von der Lichtquelle 1 so eingestellt wird, daß der austretende Lichtstrahl der kegelförmigen Natur des austretenden Wasserstrahls der Wasserstrahlschneiddüse entspricht.In the sense of the present invention, a laser light source, for example a commercially available pocket laser, is particularly preferably used as the light source 1. A lens 4 and a perforated disk 5 are preferably used as the focusing device 2, the opening of the perforated disk 5 (for example with an opening of a diameter of 0.2 mm) and the distance from the light source 1 being set such that the emerging light beam of the conical nature of the emerging water jet corresponds to the water jet cutting nozzle.
Durch die Aufweitung des Lichtstrahles bzw. Wasserstrahles in Abhängigkeit vom Abstand des Modellgegenstandes wird die Schneidfläche größer oder kleiner, wodurch gröbere oder feinere Löcher beim Wasserstrahlschneiden erhalten werden. Mit Hilfe der vorliegenden Erfindung kann somit eine äußerst präzise Programmierung der räumlichen Schneidkoordinaten von Wasserstrahlschneidvorrichtungen vorgenommen werden, die bisher übliche Nachkorrekturen am Fertigteil in der Regel überflüssig macht. Die erfindungsgemäße Vorrichtung ist somit zur berührungslosen Programmierung der räumlichen Schneidkoordinaten von Wasserstrahlschneidvorrichtung besonders geeignet. Bei Verwendung eines üblichen Taschenlasers anstelle der Nadel und Fokussierung des Lichtstrahls durch eine Lochblende kann der Wasserstrahl somit als Farbpunkt dem Realfall des Wasserstrahls im beliebigen Abstand nachgebildet werden.By widening the light beam or water jet depending on the distance of the model object, the cutting surface becomes larger or smaller, whereby coarser or finer holes are obtained during water jet cutting. With the help of the present invention, an extremely precise programming of the spatial cutting coordinates of water jet cutting devices can thus be carried out, the post-corrections on the finished part which have been customary up to now usually makes it superfluous. The device according to the invention is therefore particularly suitable for contactless programming of the spatial cutting coordinates of water jet cutting devices. When using a conventional pocket laser instead of the needle and focusing the light beam through a pinhole, the water jet can be simulated as a color point to the real case of the water jet at any distance.
Die Aufzeichnung der räumlichen Schneidkoordinaten kann mit bisher üblichen Aufnahmevorrichtungen durchgeführt werden. Besonders bevorzugt im Sinne der vorliegenden Erfindung ist die Eingabe in einer Datenverarbeitungsanlage. Werden die Schneidkanten am Modellgegenstand, beispielsweise durch besondere Farbgebung besonders markiert, so ist es mit Hilfe der vorliegenden Erfindung auch möglich, die Programmierung der räumlichen Schneidkoordinaten von Wasserstrahlschneidvorrichtungen voll automatisch durchzuführen. Hierdurch ist ein beachtliches Zeiteinsparungspotential gegeben.The recording of the spatial cutting coordinates can be carried out using recording devices that have been customary to date. For the purposes of the present invention, input into a data processing system is particularly preferred. If the cutting edges on the model object are particularly marked, for example by special coloring, it is also possible with the aid of the present invention to carry out the programming of the spatial cutting coordinates of water jet cutting devices fully automatically. This results in a considerable time saving potential.
Eine weitere Ausführungsform der vorliegenden Erfindung besteht in einem Verfahren zur Programmierung der räumlichen Schneidkoordinaten von Wasserstrahlschneidvorrichtungen, das dadurch gekennzeichnet ist, daß man mit einer Lichtquelle 1 und einer Fokussiereinrichtung 2 für den austretenden Lichtstrahl in einem Adapterstück 3, das der räumlichen Größe der Wasserstrahlschneiddüse entspricht, umfaßt, die Schneidlinien eines Modellgegenstandes abtastet und Koordinaten in definierten Abständen entlang der Schneidlinien aufzeichnet. A further embodiment of the present invention consists in a method for programming the spatial cutting coordinates of water jet cutting devices, which is characterized in that with a light source 1 and a focusing device 2 for the emerging light beam in an adapter piece 3, which corresponds to the spatial size of the water jet cutting nozzle, comprises scanning the cutting lines of a model object and recording coordinates at defined intervals along the cutting lines.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
I . Vorrichtung zur Programmierung der räumlichen Schneidkoordinaten von Wasserstrahlschneidvorrichtungen, bestehend aus einer Lichtquelle (1 ) und einer Fokussiereinrichtung (2) für den austretenden Lichtstrahl in einem AdapterstückI. Device for programming the spatial cutting coordinates of water jet cutting devices, consisting of a light source (1) and a focusing device (2) for the emerging light beam in an adapter piece
(3), das der räumlichen Größe der Wasserstrahlschneiddüse entspricht.(3), which corresponds to the spatial size of the water jet cutting nozzle.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß die Lichtquelle (1 ) eine Laserlichtquelle umfaßt.2. Device according to claim 1, characterized in that the light source (1) comprises a laser light source.
3. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß die Fokussiereinrichtung (2) eine Linse (4) und eine Lochscheibe (5) umfaßt.3. Apparatus according to claim 1, characterized in that the focusing device (2) comprises a lens (4) and a perforated disc (5).
4. Vorrichtung nach Anspruch 1 bis 3, umfassend eine Datenaufzeichnungsvor- richtung zur Aufnahme der räumlichen Schneidkoordinaten.4. Device according to claim 1 to 3, comprising a data recording device for recording the spatial cutting coordinates.
5. Verfahren zur Programmierung der räumlichen Schneidkoordinaten von Wasserstrahlschneidvorrichtungen, dadurch gekennzeichnet, daß man mit einer Lichtquelle (1 ) und einer Fokussiereinrichtung (2) für den austretenden Lichtstrahl in einem Adapterstück (3), das der räumlichen Größe der5. A method for programming the spatial cutting coordinates of water jet cutting devices, characterized in that one with a light source (1) and a focusing device (2) for the emerging light beam in an adapter piece (3) that corresponds to the spatial size of the
Wasserstrahlschneiddüse entspricht, umfaßt, die Schneidlinien eines Modellgegenstandes abtastet und Koordinaten in definierten Abständen entlang der Schneidlinien aufzeichnet. Water jet cutting nozzle corresponds, includes, scans the cutting lines of a model object and records coordinates at defined intervals along the cutting lines.
PCT/EP1999/003470 1998-05-30 1999-05-20 Programming the spatial cutting coordinates of water jet cutting devices WO1999063411A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998124419 DE19824419A1 (en) 1998-05-30 1998-05-30 Programming the spatial cutting coordinates of water jet cutting devices
DE19824419.3 1998-05-30

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WO1999063411A1 true WO1999063411A1 (en) 1999-12-09

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6374158B1 (en) * 2000-02-15 2002-04-16 General Electric Company Robotic laser pointer
CN105856327A (en) * 2016-05-12 2016-08-17 柳州市富英华工贸有限公司 Punching mold of water cutting machine of carpet

Citations (5)

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US4660970A (en) * 1983-11-25 1987-04-28 Carl-Zeiss-Stiftung Method and apparatus for the contact-less measuring of objects
US4786848A (en) * 1987-07-27 1988-11-22 Davidson Textron Inc. Water jet trim head simulator
US4870336A (en) * 1987-07-27 1989-09-26 Davidson Textron Inc. Water jet trim head simulator
EP0468169A1 (en) * 1990-07-27 1992-01-29 Kl˦ckner Desma GmbH Method and device for determining data to be stored for the control of a robot, especially for shoe manufacturing
FR2737024A1 (en) * 1995-07-20 1997-01-24 Patenotre Laurent Process for training industrial robots and object digitisation by following geometric form and contours - involves utilising sensor sending position and orientation data as sensor unit is guided over chosen parts of object, and using computer to translate data to three-dimensional data

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Publication number Priority date Publication date Assignee Title
JPH07104349B2 (en) * 1987-04-11 1995-11-13 株式会社日立製作所 Cytometry

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660970A (en) * 1983-11-25 1987-04-28 Carl-Zeiss-Stiftung Method and apparatus for the contact-less measuring of objects
US4786848A (en) * 1987-07-27 1988-11-22 Davidson Textron Inc. Water jet trim head simulator
US4870336A (en) * 1987-07-27 1989-09-26 Davidson Textron Inc. Water jet trim head simulator
EP0468169A1 (en) * 1990-07-27 1992-01-29 Kl˦ckner Desma GmbH Method and device for determining data to be stored for the control of a robot, especially for shoe manufacturing
FR2737024A1 (en) * 1995-07-20 1997-01-24 Patenotre Laurent Process for training industrial robots and object digitisation by following geometric form and contours - involves utilising sensor sending position and orientation data as sensor unit is guided over chosen parts of object, and using computer to translate data to three-dimensional data

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