EP1317999A1 - Machine pour la coupe à jet d'eau ayant un dispositif non tactile et alternativement tactile avec détecteur de distance ainsi que de guidage - Google Patents

Machine pour la coupe à jet d'eau ayant un dispositif non tactile et alternativement tactile avec détecteur de distance ainsi que de guidage Download PDF

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Publication number
EP1317999A1
EP1317999A1 EP01128964A EP01128964A EP1317999A1 EP 1317999 A1 EP1317999 A1 EP 1317999A1 EP 01128964 A EP01128964 A EP 01128964A EP 01128964 A EP01128964 A EP 01128964A EP 1317999 A1 EP1317999 A1 EP 1317999A1
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EP
European Patent Office
Prior art keywords
sensor
water jet
workpiece
cutting machine
tactile
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.)
Granted
Application number
EP01128964A
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German (de)
English (en)
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EP1317999B1 (fr
Inventor
Karl-Heinz Schmall
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE50109276T priority Critical patent/DE50109276D1/de
Priority to AT01128964T priority patent/ATE320889T1/de
Priority to EP01128964A priority patent/EP1317999B1/fr
Priority to US10/310,582 priority patent/US6814649B2/en
Publication of EP1317999A1 publication Critical patent/EP1317999A1/fr
Application granted granted Critical
Publication of EP1317999B1 publication Critical patent/EP1317999B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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

Definitions

  • a continuous thin water jet is used, with a very high one Speed from a jet pipe at a short distance of a few millimeters to the Exiting workpiece, used for abrasive removal of workpiece material.
  • the under a very high pressure of a few thousand BARs of water will shortly before Entry into the jet pipe very sharp-edged and very hard abrasive in fine grain admixed, which enable both brittle and soft, non-metallic materials as well as almost all metals can be processed economically.
  • the energy source e.g. the gas / oxygen flame of the oxyacetylene torch or the arc of a plasma torch, close enough to that Bring the workpiece in order to liquefy it in the separation area.
  • the abrasive energy is in close proximity to the Outlet opening of the jet pipe largest and therefore most effective for the abrasive cutting process.
  • the position of the surface of the workpiece does not remain horizontal, e.g. at not completely horizontal storage of plates, are used in thermal burning and Laser cutting machines contacting (tactile) or non-contacting distance sensor guidance systems used by a tracking drive of the machining tool automatically keep the machining distance constant during cutting.
  • tactile Sensors are used for sliding shoes or sliding rings, the position of which in relation and in Direction to the tool machining axis generates an electrical control signal, which is used via a drive for tracking the machining tool if Deviations from the desired distance occur.
  • Non-contacting sensors are capacitive, inductive and dependent on the operating voltage Systems in thermal cutting machines have been in general use for decades. Your electrical output signals are also functions of the distance to Workpiece.
  • Capacitive sensors cannot be used in water jet cutting because they are only deliver reliable signals in a dry environment.
  • Other non-contact distance sensor systems such as triangulation lasers, optoelectronic or ultrasonic distance sensors, come for processing environment reasons (splashing water, rebound and Abrasive material accumulations) are not considered.
  • tactile distance sensors either determine the distance between the outlet opening of the jet pipe and the workpiece before the start of the drilling and cutting cycle, then lift off the workpiece and are not engaged during the cutting, or slidingly carried on the workpiece during the drilling and subsequent cutting process.
  • inductive sensor systems have been experimentally isolated in water jet cutting used.
  • Inductive sensor systems work on the principle of retroactivity from induced eddy current fields to an inductance. They are insensitive to water and water vapor. It had been shown that the rebound of the high-energy Water jet, especially during the drilling process (before piercing the workpiece and before the actual cutting) in cooperation with the abrasive, the Sensor body extremely stressed and destroyed after a short period of operation.
  • the inductive method cannot be used for non-metallic materials since none Eddy current fields arise.
  • the present invention relates to water jet cutting machines that are associated with inductive, non-contact distance sensor systems for metallic Workpieces are equipped, which are designed so that the disadvantages of tactile Sensor technology can be avoided when cutting, furthermore for non-metallic materials an additional tactile are designed adaptable, which also structurally integrated means for Flush away material accumulations in the vicinity of the jet pipe and contain them additional wear barrier layers are provided to protect the sensor body.
  • such inductive sensor systems preferably consist of one cylindrical main body of short length, which is concentric over the jet pipe pushed and either clamped to this or to the clamp of the jet pipe is, consisting of a metallic part with the clamping device and a non-metallic part with the inductive sensor system. This is partly from metallic part so that it is protected against mechanical forces during operation is largely protected.
  • a tubular flushing guide is concentric to the longitudinal axis of the annular sensor provided through which the flushing medium, preferably water, parallel to the jet pipe and this is passed in the direction of the end of the jet pipe, so that it is immediately on the machining point hits the workpiece and the material deposits after all Sides can wash away.
  • the flushing medium preferably water
  • the detergent is fed to the main body via one or more fixed guide tubes fed. They are arranged so that the connections of the supply hoses outside the area that could be reached by rebound and abrasive impact.
  • the electrical connection of the inductive sensor system is designed in a similar way, so that from the main body two or more, preferably from the working plane protruding pipes protrude, at least one of which has a connector is equipped for the sensor function.
  • the cylindrical main body is designed so that, if necessary, a tactile addition pushed concentrically and with the main body by clamping or screwing can be connected.
  • the tactile additive consists of a preferably metallic, tubular connector body and a movable, non-sliding, only guiding device of high rigidity enclosing the inductive sensor device lateral forces, but low deflection force in the direction of the main axis. It is ring-shaped built up and on the side facing the workpiece by an annular metal plate completed, which in turn carries a replaceable slide ring with high abrasion resistance.
  • This guide device is according to the invention by resilient constructive means without sliding parts, marked.
  • the deflection force in the direction parallel to the main axis is simple in accordance with the invention adjustable to adapt them to the respective requirements with tactile distance control
  • An embodiment of the present invention is shown in FIG. 1.
  • 1 shows the water jet cutting head in a functionally simplified form.
  • the valve for the water inflow is named, through the pipe 3 in the cutting head is led.
  • 4 shows the supply pipe for the abrasive agent, which in the cutting head Water supplied, entrained by this and after exiting the jet pipe 12 to Removal of the material on the workpiece 13 is used.
  • the main body 5 with the clamping device, not shown, is concentric with Beam pipe 12 pushed onto this. It carries the sensor body 6 and envelops it partly on the mechanical protection side.
  • a tube 7 with the connecting cable 8 leads to the electrical connection of the sensor 6.
  • Another tube 10 leads to an annular chamber 11. This is parallel and concentric with Beam pipe extended until it emerges from the sensor body, but with a smaller diameter.
  • the detergent preferably water, is at high pressure in the Annular chamber 11 pressed.
  • the water then flows parallel to the jet pipe and enveloping it with increasing Speed towards the beam pipe entrance. This is shown in FIG. 1 by arrows indicated.
  • the kinetic energy of the outflowing detergent causes material to accumulate due to the abrasive abrasive and material removal above the workpiece be washed away on all sides.
  • additional lateral loads on the jet pipe and repercussions avoided the sensor function.
  • the material of the sensor body 6 is resistant to it as far as possible Stress, however, in order to achieve reliable protection of the sensor body is this equipped on its underside with a protective plate 14. This is one of them Condition that it slows down the particles that occur during the drilling process and also has extensive abrasion resistance. Depending on requirements, it can be done with a few Handles can be easily replaced when it has suffered a certain amount of wear.
  • This plate is according to the invention for monitoring the degree of wear of this protective plate equipped with devices that give an electrical signal in the event of a certain wear trigger that prompts for exchange.
  • the subject of this invention is also this Device in various forms, characterized by one or more, in the protective plate accommodated electrical conductors or conductor tracks, which are either direct or indirectly when a certain degree of wear is reached through the direct one Exposure of the retroreflected particles to a change in their electrical values or their Interrupt conductivity to learn what is used for electrical signal generation becomes.
  • FIG. 2 Av.B An embodiment of this protective plate according to the invention is shown in Fig. 2 Av.B.
  • the protective plate is designated.
  • it consists of a rubber-like one Material.
  • a conductor track arrangement 16 is preferably in shape a printed circuit on a thin carrier 15 or in the form of thin wires in a spiral arrangement, directly embedded, introduced.
  • An electrical capacitor 17 connects both ends of the spiral together, making this arrangement a resonant circuit forms, which has a certain resonance frequency.
  • the sensor body Resonant circuit which has the same frequency as that housed in the protective plate Tuned resonant circuit and is preferably connected to an oscillator circuit.
  • the resonant circuit in the sensor body Due to the close proximity of the resonant circuit in the protective plate and this oscillator + The resonant circuit in the sensor body provides a tight coupling between the two circuits.
  • the passive circuit in the protective plate draws so much energy from the oscillator circuit that this can no longer meet the self-excitation condition. This sets the Oscillator oscillation off and the oscillator does not supply any output voltage Signal generation from.
  • a passive resonant circuit is not introduced into the protective plate in this embodiment, as shown in FIG. 2, but the two ends of the preferably meandering or spiral conductor track are connected to a cable connection, which leads to a monitoring circuit for conductor track interruption. As soon as the conductor path is interrupted at one point, the monitoring circuit responds and in turn generates the "replace protective plate" signal.
  • Fig. 3 A the protective pane 14 with the interlayer conductor track arrangement 18 is as meandering training shown.
  • the conductor track 18 is via the cable 19 via a plug connection, not shown Monitoring circuit 20 performed, which is a circuit break in a known manner detected.
  • Monitoring circuit 20 performed, which is a circuit break in a known manner detected.
  • FIG. 3B Another example of the formation of the electrical connection is in FIG. 3B shown.
  • the contacting of the conductor track is provided here directly on the sensor body.
  • the sensor body 6 is made of an insulating material with an inner tube 33 provided that is equipped with contacts 34 and the connections 35.
  • the conductor track 18 leads in the protective plate 14 to corresponding contact surfaces opposite the Contacting 34.
  • Fig. 3 B shows only those necessary to understand this training Parts of the sensor system.
  • the tactile additive according to the invention is now such that a metallic body preferably a ring or a piece of pipe, which in the direction of the main axis of the Beam tube movably supported and with a tactile, i.e. resting on the workpiece, Low-wear, preferably annular body is connected.
  • a metallic body preferably a ring or a piece of pipe, which in the direction of the main axis of the Beam tube movably supported and with a tactile, i.e. resting on the workpiece, Low-wear, preferably annular body is connected.
  • the ring shape of the metallic body is this between the workpiece and the sensor body parallel to this arranged and can be deflected towards the sensor body.
  • a piece of pipe is used, it is arranged concentrically to the sensor body and laterally enclosing it between the sensor body and the jacket-like continuation of the metallic main body. This means that the piece of pipe forms a short-circuit ring in its effect on the inductive sensor system, which, depending on its position, relates to the sensor system changed.
  • 4 shows one of the possible forms of formation of the tactile additional device as an example of an annular metallic body between the workpiece and the sensor body, partly in a sectional view for better understanding.
  • the tactile add-on 21 is placed on the main body 5 of the sensor and fastened in a manner not shown in the drawing.
  • the tactile add-on contains a vertically deflectable, side-stiff guide device, which is indicated schematically and is designated by 22. Their design is described in more detail in Fig. 6. It carries supports 23 which carry the metallic ring 24. It can move parallel to the sensor body. The supports 23 lead further to the slide ring 25, which rests on the workpiece in the working position of the cutting head.
  • the sensor then reacts as if there is a metallic workpiece underneath it that its output signal is a function of the distance to the workpiece.
  • the metallic ring 24 can also have wear protection on its underside be equipped as described in Fig. 1.
  • FIG. 5 shows a similar arrangement of a tactile addition equipped with a tubular metallic body.
  • the metallic tubular body is shown in FIG 27 arranged, which is positioned concentrically around the sensor body 6.
  • the coils inside the sensor body ensures that the vertical Displacement of the metallic tubular body 27 same output signals from the sensor causes like the metallic ring body below the sensor or a metallic one Workpiece would result in the same vertical deflection or change in distance.
  • Fig. 5 is an annular gap between the sensor body 6 and the extension of the sensor main body 5 available in which the tubular body 27 is moved.
  • Fig. 6 shows an example of the guide device of the movable part of a tactile Additional device.
  • an arrangement is used for this which, without sliding guide elements, is only equipped with resilient elements which have high rigidity of the guide system against the lateral forces due to the sliding of the slide ring or the roller / wheel guide, on the workpiece and at the same time low vertical deflection forces.
  • This guide device is multiple in 2 or more Levels 28 arranged concentrically around the sensor body.
  • Each leaf spring element has a symmetrical slot, which the element in FIG divides similar resilient strips, so that the resilient length increases.
  • bores 29 and 31 are provided. Through the Bores 29 are screwed or riveted punch 30 introduced into the body of the tactile additive end at the top and fix the outer part of the spring segment there.
  • the holes 31 are also provided with similar stamps, which are in the Continue the brackets 23 for the slide ring 25. Additional springs 31 are also on the upper side arranged with adjusting screws 32, with which the downward spring force is adjusted can be.
  • a stop not shown in FIG. 6 for the inner spring segment strips limit the travel downwards.
  • this sliding-free guide device can easily be seen from FIG. For the sake of clarity, it only shows the leaf spring segments.
  • the two inner spring segment strips can move towards or away from the viewer at the open end while the outer spring segment strips remain in position.
  • the closed end of the spring segment follows the deflection of the inner spring segment strip approximately halfway.
  • stamps lead through the bores 29 to the body of the tactile additive.
  • the segments 33 are not slotted here.
  • Stamps are also arranged in the bores 31, which lead to the slide ring 25 as shown in FIG. 6.
  • this type of fastening is only one possible variant of the clamping on the additional body. Clamping devices can also be used, which provide better grip

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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)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
EP01128964A 2001-12-06 2001-12-06 Machine pour la coupe à jet d'eau ayant un dispositif non tactile et alternativement tactile avec détecteur de distance ainsi que de guidage Expired - Lifetime EP1317999B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE50109276T DE50109276D1 (de) 2001-12-06 2001-12-06 Wasserstrahl-Schneidemaschine mit berührungsloser und wahlweise taktiler Abstands-Führungssensor-Einrichtung
AT01128964T ATE320889T1 (de) 2001-12-06 2001-12-06 Wasserstrahl-schneidemaschine mit berührungsloser und wahlweise taktiler abstands-führungssensor- einrichtung
EP01128964A EP1317999B1 (fr) 2001-12-06 2001-12-06 Machine pour la coupe à jet d'eau ayant un dispositif non tactile et alternativement tactile avec détecteur de distance ainsi que de guidage
US10/310,582 US6814649B2 (en) 2001-12-06 2002-12-05 Fluid jet cutting machine with a system for a contact free guidance of a spacing sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01128964A EP1317999B1 (fr) 2001-12-06 2001-12-06 Machine pour la coupe à jet d'eau ayant un dispositif non tactile et alternativement tactile avec détecteur de distance ainsi que de guidage

Publications (2)

Publication Number Publication Date
EP1317999A1 true EP1317999A1 (fr) 2003-06-11
EP1317999B1 EP1317999B1 (fr) 2006-03-22

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EP01128964A Expired - Lifetime EP1317999B1 (fr) 2001-12-06 2001-12-06 Machine pour la coupe à jet d'eau ayant un dispositif non tactile et alternativement tactile avec détecteur de distance ainsi que de guidage

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US (1) US6814649B2 (fr)
EP (1) EP1317999B1 (fr)
AT (1) ATE320889T1 (fr)
DE (1) DE50109276D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010113127A2 (fr) 2009-03-31 2010-10-07 Bystronic Laser Ag Dispositif et procédé de découpe au jet d'eau
CN101614605B (zh) * 2009-08-05 2010-12-01 南京大地水刀股份有限公司 水切割设备切割头和喷射元件冲击能检测装置
AT515942A4 (de) * 2014-08-29 2016-01-15 Stm Stein Moser Gmbh Sensor einer Wasserstrahl-Schneideinrichtung
CN111571450A (zh) * 2020-05-27 2020-08-25 北京天启韵华酒店管理有限公司 一种玻璃加工机

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
GB9703673D0 (en) * 1997-02-21 1997-04-09 Bradford Particle Design Ltd Method and apparatus for the formation of particles
JP4473599B2 (ja) * 2004-02-23 2010-06-02 株式会社ディスコ ウォータージェット加工装置
US7331842B2 (en) * 2004-08-19 2008-02-19 Flow International Corporation Contour follower for tool
US7108585B1 (en) * 2005-04-05 2006-09-19 Dorfman Benjamin F Multi-stage abrasive-liquid jet cutting head
US8308525B2 (en) * 2008-11-17 2012-11-13 Flow Internationl Corporation Processes and apparatuses for enhanced cutting using blends of abrasive materials
DE202010004903U1 (de) * 2010-04-12 2010-07-29 Iht Automation Gmbh & Co. Kg Schweiß- oder Schneidgerät
CH707367A8 (de) * 2012-12-18 2014-12-15 Micromachining Ag Verfahren zum Bearbeiten einer Folge von Werkstücken mittels mindestens eines Bearbeitungsstrahls.
US11577366B2 (en) 2016-12-12 2023-02-14 Omax Corporation Recirculation of wet abrasive material in abrasive waterjet systems and related technology
CN106863148B (zh) * 2017-04-05 2023-03-24 安徽理工大学 一种基于电磁机理驱动固液两相流形成磨料射流装置
US11213912B2 (en) * 2018-06-25 2022-01-04 Bwxt Nuclear Operations Group, Inc. Methods and systems for monitoring a temperature of a component during a welding operation
CN110813590B (zh) * 2019-10-29 2020-08-14 合肥工业大学 一种可实现异形表面加工靶距自调节的同心射流喷嘴装置
CN113211546B (zh) * 2021-05-24 2023-05-12 威海旭日过滤器股份有限公司 一种数控超高压水射切割机
CN113524348A (zh) * 2021-08-01 2021-10-22 林映辉 一种具有防护结构的机械自动化水切割机

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JPS63267198A (ja) * 1987-04-25 1988-11-04 川崎重工業株式会社 ウオ−タジエツト切断装置
EP0594091A1 (fr) * 1992-10-17 1994-04-27 SÄCHSISCHE WERKZEUG UND SONDERMASCHINEN GmbH Alimentation en liquide - et matériau abrasif pour un dispositif de découpage à jet de fluide
FR2699852A1 (fr) * 1992-12-29 1994-07-01 Gaz De France Procédé et dispositif d'usinage à jet de fluide haute pression asservi.
US5588593A (en) * 1995-06-05 1996-12-31 C.H. Heist Corp Safety apparatus for high pressure liquid jet system
US6049580A (en) * 1995-11-30 2000-04-11 Compagnie Generale Des Matieres Nucleaires Apparatus for remote dismantling of irradiated structures

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US3978748A (en) * 1974-11-25 1976-09-07 Camsco, Inc. Fluid jet cutting system
US4848042A (en) * 1987-09-09 1989-07-18 Ltv Aerospace And Defense Company Fluid jet cutting system with standoff control
US6244927B1 (en) * 1998-08-31 2001-06-12 Ingersoll-Rand Company Multi-functional sensing methods and apparatus therefor

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
JPS63267198A (ja) * 1987-04-25 1988-11-04 川崎重工業株式会社 ウオ−タジエツト切断装置
EP0594091A1 (fr) * 1992-10-17 1994-04-27 SÄCHSISCHE WERKZEUG UND SONDERMASCHINEN GmbH Alimentation en liquide - et matériau abrasif pour un dispositif de découpage à jet de fluide
FR2699852A1 (fr) * 1992-12-29 1994-07-01 Gaz De France Procédé et dispositif d'usinage à jet de fluide haute pression asservi.
US5588593A (en) * 1995-06-05 1996-12-31 C.H. Heist Corp Safety apparatus for high pressure liquid jet system
US6049580A (en) * 1995-11-30 2000-04-11 Compagnie Generale Des Matieres Nucleaires Apparatus for remote dismantling of irradiated structures

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010113127A2 (fr) 2009-03-31 2010-10-07 Bystronic Laser Ag Dispositif et procédé de découpe au jet d'eau
CH700798A1 (de) * 2009-03-31 2010-10-15 Bystronic Laser Ag Vorrichtung und Verfahren zum Wasserstrahlschneiden.
WO2010113127A3 (fr) * 2009-03-31 2010-12-29 Bystronic Laser Ag Dispositif et procédé de découpe au jet d'eau
CN101614605B (zh) * 2009-08-05 2010-12-01 南京大地水刀股份有限公司 水切割设备切割头和喷射元件冲击能检测装置
AT515942A4 (de) * 2014-08-29 2016-01-15 Stm Stein Moser Gmbh Sensor einer Wasserstrahl-Schneideinrichtung
AT515942B1 (de) * 2014-08-29 2016-01-15 Stm Stein Moser Gmbh Sensor einer Wasserstrahl-Schneideinrichtung
CN111571450A (zh) * 2020-05-27 2020-08-25 北京天启韵华酒店管理有限公司 一种玻璃加工机
CN111571450B (zh) * 2020-05-27 2021-09-03 南宁市田瑞玻璃有限责任公司 一种玻璃加工机

Also Published As

Publication number Publication date
US6814649B2 (en) 2004-11-09
EP1317999B1 (fr) 2006-03-22
US20030109193A1 (en) 2003-06-12
ATE320889T1 (de) 2006-04-15
DE50109276D1 (de) 2006-05-11

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