EP1557239A1 - 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
EP1557239A1
EP1557239A1 EP04100247A EP04100247A EP1557239A1 EP 1557239 A1 EP1557239 A1 EP 1557239A1 EP 04100247 A EP04100247 A EP 04100247A EP 04100247 A EP04100247 A EP 04100247A EP 1557239 A1 EP1557239 A1 EP 1557239A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
water jet
water
holder
workpiece holder
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Withdrawn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
EP04100247A
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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 EP04100247A priority Critical patent/EP1557239A1/fr
Publication of EP1557239A1 publication Critical patent/EP1557239A1/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Withdrawn legal-status Critical Current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 complicated patterns, the be badly sawed.
  • 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 of workpieces, in which a workpiece is held with a workpiece holder, with a jet of water is processed under high pressure, characterized that the workpiece is moved through the workpiece holder during processing,
  • a device for water jet cutting which device comprises: a water jet head, a water jet under high pressure, a workpiece holder for holding a machined Workpiece, characterized in that the workpiece holder to is designed to move the workpiece during processing.
  • the invention provides, the workpiece during water jet cutting with the workpiece holder to move.
  • This has over known devices, in which the water jet head in u. U. complicated way to be moved and adjusted can result in a significant simplification in many applications. Especially can be different sides by appropriate movements of the workpiece or parts of the workpiece are processed without the water jet head over to move large distances.
  • the invention includes a movement of the water jet head of course not out; rather, it is preferred that movements the water jet head during machining with movements of the workpiece combined to create appropriate patterns.
  • the inventive movement of the workpiece is in principle one-dimensional or also multidimensional, that is with an arbitrary number of translatory and rotational ones Degrees of freedom, conceivable.
  • the workpiece holder relatively easy to build and only to provide a single degree of freedom of movement.
  • Another aspect of the invention relates to the positioning of the workpiece during the processing. It turns out that complicated ones Workpiece molding poses the problem that is due to a wall of the workpiece already passed through water jet on other walls of the workpiece, in Follow the direction of the water jet, can leave damage. Of course this applies not just following in the strictly geometrical sense of the original beam direction more walls of the workpiece but in principle also for wall areas, the reached through the after passing through the first wall slightly deflected water jet become.
  • An optional feature of the invention is accordingly directed to a protective material, that between the actual wall to be worked and the wall to be protected can be introduced.
  • a protective material can be any materials that be able to absorb or to sufficiently the water jet Brakes, in particular solids, such as remnants of the material to be processed or other sufficiently solid "sacrificial material".
  • Such protective material can used in the form of plates, tongues and similar geometrically adapted forms become. It can on the movement of the workpiece according to the invention be considered during processing.
  • the protective material can both in relation to the workpiece and in relation to the unmoved 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.
  • workpieces were in Water jet cutting devices above the water surface of the water bath arranged. Specifically, they were placed on a surface near the surface Perforated plate applied. Care was taken to see the bottom of the workpiece did not come into contact with the surface of the water because otherwise there was a risk the water entering the section line from the water bath the water jet slows down in the lower part of the cut and thus reduces the quality of cut or prevent a complete cut.
  • the already mentioned perforated sheets or grids have prevented immersion of workpieces for these reasons.
  • the invention now assumes that the possible applications of the water jet cutting technique can be extended when the workpiece partially in dip the water bath. It can then, for example, plate-like parts of a more complex workpiece in an upper area during machining be edited, in particular cut, while other areas in their state immersed in the water bath are protected from inadvertently to be damaged by the water jet.
  • the water bath allows so a separation between the workpiece areas intended for processing and other workpiece areas.
  • workpieces can be processed and are cut, when viewed from the direction of the water jet below the section to be machined another, 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 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, with simple constructions the processing device and without affecting other parts of the workpiece as the intended allowed. It opens up to the very simple and beneficial Method of water jet machining, in particular of water jet cutting, meaningful other areas of application, such as the cutting to length of pipes or cutting parts out 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)
EP04100247A 2004-01-23 2004-01-23 Procédé et dispositif pour le découpage au jet d'eau Withdrawn EP1557239A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04100247A EP1557239A1 (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
EP04100247A EP1557239A1 (fr) 2004-01-23 2004-01-23 Procédé et dispositif pour le découpage au jet d'eau

Publications (1)

Publication Number Publication Date
EP1557239A1 true EP1557239A1 (fr) 2005-07-27

Family

ID=34626535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04100247A Withdrawn EP1557239A1 (fr) 2004-01-23 2004-01-23 Procédé et dispositif pour le découpage au jet d'eau

Country Status (1)

Country Link
EP (1) EP1557239A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101121286B (zh) * 2007-05-18 2010-10-27 陈波 多功能水刀
CN103963149A (zh) * 2013-02-03 2014-08-06 金昌市万隆实业有限责任公司 一种多刀头高压水刀切割系统

Citations (3)

* 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

Patent Citations (3)

* 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101121286B (zh) * 2007-05-18 2010-10-27 陈波 多功能水刀
CN103963149A (zh) * 2013-02-03 2014-08-06 金昌市万隆实业有限责任公司 一种多刀头高压水刀切割系统

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