EP1557240A1 - Procédé et dispositif pour le découpage au jet d'eau - Google Patents

Procédé et dispositif pour le découpage au jet d'eau Download PDF

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Publication number
EP1557240A1
EP1557240A1 EP04100250A EP04100250A EP1557240A1 EP 1557240 A1 EP1557240 A1 EP 1557240A1 EP 04100250 A EP04100250 A EP 04100250A EP 04100250 A EP04100250 A EP 04100250A EP 1557240 A1 EP1557240 A1 EP 1557240A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
water
water jet
water bath
bath
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.)
Withdrawn
Application number
EP04100250A
Other languages
German (de)
English (en)
Inventor
Erich Kratzmaier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kratzmaier Konstruktionen GmbH
Original Assignee
Kratzmaier Konstruktionen GmbH
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 Kratzmaier Konstruktionen GmbH filed Critical Kratzmaier Konstruktionen GmbH
Priority to EP04100250A priority Critical patent/EP1557240A1/fr
Publication of EP1557240A1 publication Critical patent/EP1557240A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to a method and an apparatus for the Waterjet cutting of workpieces.
  • the waterjet cutting is on known processing technique and is suitable for a variety of materials, such as metals, stone, glass.
  • a jet of water under high pressure and with an admixed one particulate solid leads to an erosion-like material removal.
  • By properly focused water jets clean cuts can be achieved where the thicknesses to be cut are material-dependent.
  • the procedure finds especially application in the realization of two-dimensional complicated Patterns that are difficult to saw.
  • the invention is based on the problem, a method and an apparatus for Specify water jet cutting with improved applications.
  • the invention is directed to a method for water jet cutting workpieces, in which a workpiece is held with a workpiece holder and is processed with a jet of water under high pressure, characterized in that the water steel after passing through a wall of the workpiece by a between the wall and a protective material introduced in the direction of the water jet is intercepted, and to an apparatus for water jet cutting according to this method, which apparatus comprises: a water jet head capable of ejecting a water jet under high pressure, a workpiece holder for holding a workpiece to be processed, and a vessel for a water bath for capturing the water jet with the water bath, characterized in that the workpiece holder is adapted to hold the workpiece so that it is immersed in the water bath during processing.
  • the invention is accordingly directed to a protective material which is between the actually to be machined wall and the wall to be protected is introduced.
  • a protective material which is between the actually to be machined wall and the wall to be protected is introduced.
  • It can be any materials capable of water jet sufficiently to absorb or brake, in particular to Solids, such as remnants of the material to be processed or other sufficient solid "sacrificial material".
  • Such protective material may be in the form of plates, Tongues and similar geometrically adapted shapes are used. there can on a as hereinafter explained advantageous movement of the workpiece be considered during processing.
  • the protective material can be both in terms of the workpiece as well as in relation to the non-moving Resting environment, so be attached to the workpiece itself or elsewhere.
  • a preferred embodiment of the invention relates to the fact that it is this protective material to a liquid, especially the anyway during processing provided water, acts.
  • the invention thus assumes that the Applications of water jet cutting technology can be extended if the workpiece partially immersed in the water bath. (In the following Water is representative of a protective material called.) It can then, for example plate-like parts of a complex structure in a while the machining upper area is edited, in particular cut, while other areas in front of it dipped in the water bath are protected accidentally damaged by the water jet.
  • the water bath thus allows a separation between those for processing provided workpiece areas and other workpiece areas. Thereby can In particular workpieces are machined and cut, in which from the Direction of the water jet seen below the section to be machined further, not to be processed section is provided.
  • the workpiece holder is at least one to arrange the essential part in the water bath itself. Not only the Areas of the workpiece holder, which at least in individual processing phases in advised the area of the water jet to be protected from this.
  • the structure The workpiece holder also simplifies when positioning in the Water bath allows.
  • hollow body in particular non-closed Hollow body.
  • the invention of the opposite Sheath area arranged in a water bath and thus against damage protected by the processed by the machined shell area water jet become.
  • This protection does not just concern the prevention of an accidental double cutting but also, for example, certain surface qualities the inner surface of the tube, itself by a widened Water jet or a relatively quick water injection could be damaged.
  • the invention allows a water level within the hollow body, in particular just below the surface to be worked. But also with others, more complex shaped workpieces that no longer refer to as an open hollow body are comparable benefits can result.
  • the workpiece holder is so designed so that the workpiece is rotated about an axis during machining can be. This is especially true for rotationally symmetrical workpieces all pipes, an advantage. On the one hand, pipes can then be cut through, without being recaptured. For another, along with one as well preferred mobility of the water jet head during processing as well more complex cutting patterns are mounted in a workpiece wall. Naturally are within the scope of the invention, further movement possibilities of Workpiece holder possible, however, it has been shown that in connection with an adjustability or mobility of the water jet head in many cases a Rotatable about a single axis of rotation, preferably perpendicular to the water jet direction and parallel to the water surface is sufficient.
  • the workpiece holder preferably has two clamping heads which are between them can clamp the workpiece and an axis connecting the clamping heads can turn.
  • One of the clamping heads can be used for workpiece removal and for Clamping be axially displaceable, so represent a so-called. Pinole.
  • the clamping heads further preferably have conical insertion sections for insertion in a tube, as shown in more detail in the embodiment.
  • one the clamping heads is preferably driven in rotation, while the other clamping head preferably free-running.
  • the engine can be considered a watertight one Executed electric motor and be disposed within the water bath, however also provided outside the water bath and, for example, with a belt drive be connected to the chuck.
  • the adjustability of the water jet head is preferably at least two-dimensional, and preferably in the plane of the water surface. Naturally additional degrees of freedom of adjustment of the water jet head can be added, as they are known per se in waterjet cutting devices.
  • the numeral 1 denotes the surface of a water bath 2, that in a not shown here and in Fig. 2 schematically indicated vessel a Water jet cutting device is provided.
  • the water jet cutting device has a water jet head 3 from which at the lower end a vertically directed downwardly focused water jet 4 under high pressure exit.
  • the chuck 6 is as by the situation indicated schematically, the tube axis freely rotatable on a base 10 of the workpiece holder attached.
  • the clamping head 7 is fastened to the base 10 in the same way and moreover at its opposite end via a belt drive 11 connected to an electric motor 12, which is above the water surface 1 is arranged.
  • the clamping head 7 is also designed as quill and in the tube axis direction, which corresponds to the connection axis between the clamping heads 6 and 7, displaceable, so that the workpiece 5 by moving the sleeve from the workpiece holder can be removed or clamped in it.
  • Fig. 1 shows that the workpiece holder with the exception of the uppermost areas of Clamping heads 6 and 7 and a part of the belt drive 11 and the electric motor 12 is arranged in the water bath 2. This ensures that the pipe section. 5 so immersed in the water bath 2 is that the water surface 1 just below the highest point of the inner shell of the pipe section 5 is located, so the uppermost part of Pipe piece wall just protrudes from the water bath 2.
  • the water jet 4 thus hits, if he a section through the upper in the figures Area of the wall of the pipe section 5 generated immediately after passing through the Wall on the water surface 1 and can thus more areas of the pipe section 5 does not affect further.
  • the water jet head 3 is further moved in this case two-dimensionally, and Although on the one hand in the horizontal direction in Fig. 1 and the other perpendicular on the drawing plane of Fig. 1. Further, the pipe section 5 via the electric motor 12, the belt drive 11 and the clamping heads 6 and 7 rotatable so that a total of in the pipe wall also complex lines can be cut. Of course you can the water jet head 3 also in different directions, in particular one horizontal axis in Fig. 1, be tilted to influence the cutting inclination.
  • the clamping heads 6 and 7 are designed so that between the conical engaging heads 6 and 7 on the one hand and the pipe section 5 and generally the workpiece on the other hand, sufficient spaces remain so that the water level 1 within the workpiece to the water level 1 outside match.
  • the water jet 4 namely water is introduced into the interior, which accordingly must be able to run to the outside.
  • channels for example by grooves in the conical engagement surfaces.
  • the invention thus offers significant advantages by the water jet machining complex workpieces, in particular of hollow bodies, without impairment other workpiece parts than intended intended. It opens up to the very simple one and advantageous methods of water jet machining, in particular of Water jet cutting, meaningful other applications, such as cutting to length of pipes or cutting parts of pipe walls.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP04100250A 2004-01-23 2004-01-23 Procédé et dispositif pour le découpage au jet d'eau Withdrawn EP1557240A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04100250A EP1557240A1 (fr) 2004-01-23 2004-01-23 Procédé et dispositif pour le découpage au jet d'eau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04100250A EP1557240A1 (fr) 2004-01-23 2004-01-23 Procédé et dispositif pour le découpage au jet d'eau

Publications (1)

Publication Number Publication Date
EP1557240A1 true EP1557240A1 (fr) 2005-07-27

Family

ID=34626536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04100250A Withdrawn EP1557240A1 (fr) 2004-01-23 2004-01-23 Procédé et dispositif pour le découpage au jet d'eau

Country Status (1)

Country Link
EP (1) EP1557240A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101224588B (zh) * 2008-02-18 2010-07-21 陈波 基于丝杆传动的大行程水刀
EP2123788A3 (fr) * 2008-04-29 2010-10-27 Huffman Corporation Procédé et dispositif de décapage de trous dans un substrat métallique
US9278462B2 (en) 2013-11-20 2016-03-08 General Electric Company Backstrike protection during machining of cooling features

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4604923A (en) * 1983-01-18 1986-08-12 Index-Werke Komm. Ges. Hahn & Tessky Method of machining a workpiece between centers and a clamping device for performing this method
US5279075A (en) * 1992-02-29 1994-01-18 Rolls-Royce Plc Abrasive fluid jet machining
US5512007A (en) * 1993-09-30 1996-04-30 Astro Machine Works, Inc. System and process for manufacturing a flexible connection in a hollow metal device
DE19711512C1 (de) * 1997-03-19 1998-10-15 Foracon Maschinen Und Anlagenb Wasserstrahlschneiden von Ausschnitten in Rohrwandungen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4604923A (en) * 1983-01-18 1986-08-12 Index-Werke Komm. Ges. Hahn & Tessky Method of machining a workpiece between centers and a clamping device for performing this method
US5279075A (en) * 1992-02-29 1994-01-18 Rolls-Royce Plc Abrasive fluid jet machining
US5512007A (en) * 1993-09-30 1996-04-30 Astro Machine Works, Inc. System and process for manufacturing a flexible connection in a hollow metal device
DE19711512C1 (de) * 1997-03-19 1998-10-15 Foracon Maschinen Und Anlagenb Wasserstrahlschneiden von Ausschnitten in Rohrwandungen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101224588B (zh) * 2008-02-18 2010-07-21 陈波 基于丝杆传动的大行程水刀
EP2123788A3 (fr) * 2008-04-29 2010-10-27 Huffman Corporation Procédé et dispositif de décapage de trous dans un substrat métallique
US8380338B2 (en) 2008-04-29 2013-02-19 Huffman Corporation Method and apparatus for stripping holes in a metal substrate
US9278462B2 (en) 2013-11-20 2016-03-08 General Electric Company Backstrike protection during machining of cooling features

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