EP1406749B1 - Process and device for the removal of material arranged within a workpiece - Google Patents

Process and device for the removal of material arranged within a workpiece Download PDF

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Publication number
EP1406749B1
EP1406749B1 EP02742799A EP02742799A EP1406749B1 EP 1406749 B1 EP1406749 B1 EP 1406749B1 EP 02742799 A EP02742799 A EP 02742799A EP 02742799 A EP02742799 A EP 02742799A EP 1406749 B1 EP1406749 B1 EP 1406749B1
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EP
European Patent Office
Prior art keywords
jet
workpiece
bore
generation unit
unit
Prior art date
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Expired - Lifetime
Application number
EP02742799A
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German (de)
French (fr)
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EP1406749A1 (en
Inventor
Wilhelm Hopf
Frank Dahlmanns
Aron Mattis
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP1406749A1 publication Critical patent/EP1406749A1/en
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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
    • B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/083—Deburring
    • 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
    • B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes

Definitions

  • the invention relates to a method for removing one inside a Workpiece arranged material.
  • a directional unit or reflection unit is arranged to generate a substance jet, which is firmly connected to the device for generating the jet of material.
  • the original material jet from its direction against the wall of a bore deflects can be a material removal in the field of Drill hole wall.
  • Similar devices of this type, in which the straightening units are always firmly connected to the device for generating the material jet are also known from US 5,664,992, DD 294 891 A5 and US 2,439,032.
  • the problem is often the use of such devices in the range of Bore intersections, where due to the rigid at the top of the devices for Generation of the material beam arranged straightening units, for example, to spatial Problems may arise in the area of bore intersections, which may be the use of the restrict known devices.
  • the object of the invention is a method to provide a problem-free removal of material inside a Workpiece in the area of Bohrverschneidungen allows. This task will solved in the method according to claim 1.
  • the spatial Separation between the beam generating unit and the straightening unit becomes essential better accessibility or flexibility of the device used in the range of Botuungsverschneidonne achieved by the fact that the two units in different Holes are introduced and so on different areas of Bohrungsverschneidung can be arranged.
  • suitable device and advantageous developments of this Device are listed in claims 3 to 8.
  • Figure 1 is schematically a not affected by the scope Injector jet device shown, wherein a Water jet 1 an abrasive 2 in a mixing chamber. 5 sucks, so that a mixed jet 3 generated in a probe 6 becomes. From the probe 6 exits a stream of material 4, the by means of a reflection element 7 to a predetermined Area is directed inside a workpiece 8.
  • a relatively hard to reach area e.g. as a hole 9
  • a relatively small Diameter example has a few millimeters.
  • the device is movable according to an arrow P 1 in the axial direction of the probe 6.
  • the device according to an arrow P 2 is rotatable about the axis of the probe 6. This makes it possible that almost arbitrarily formed areas in the interior of the workpiece 8 can be removed.
  • a control unit not shown, controls the movement of the device for this purpose.
  • annular cavity of the bore 9 can be generated by rotation in accordance with arrow P 2 .
  • the bore 9 may be in contrast to the illustrated variant, a blind hole.
  • FIG. 2 shows a device according to the invention shown, in contrast to the device according to FIG. 1 no holding element 11 fixed to the probe 6 is provided, but a separate baffle plate 12, the introduced through a second bore 13 in the workpiece 8 is.
  • the workpiece 8 according to FIG. 2 is for example, a so-called rail (pressure accumulator) the system common rail.
  • the rail 8 includes in particular Branches 14, each having a bore 15. in the Generally, both the bore 13 and the Bores 15 produced by machining, so that in the transition area between the holes 13, 15 burrs or sharp edges arise.
  • the probe 6 in the bore 15th introduced and the baffle plate 12 in the bore 13, so that the substance jet 4 is reflected on the baffle plate 12 in such a way is that this the transition area in exactly predetermined Deburred or rounded off.
  • This is especially positive, that by the impulse effect of the material jet 4 on impact on the workpiece 8 a compaction of the structure and thus Compressive stresses of the workpiece 8 are generated.
  • Compressive stresses have an advantageous effect on the later Application of the rail 8, this particular one pulsating load at comparatively high pressures is exposed.
  • Figure 3 are differently shaped baffles 12th shown schematically.
  • Figure 3a has both a 39als also a front view of a baffle plate 12 with planar, perpendicular to the material beam 4 aligned reflection surface 16 on.
  • the baffle plate 12 according to Figure 3a corresponds largely the baffle plate 12 according to FIG. 2
  • the baffle plate 12 according to Figure 3b is again in side than Also shown front view and has a planar Reflection surface 16, but this angle to the Beam direction of the fabric jet 4 is arranged.
  • FIG. 3c shows a side and front view of a baffle plate 12 with a plurality of planar reflection surfaces 16 oriented perpendicular to the material jet 4.
  • the baffle plate 12 according to FIG. 3 c can optionally be rotated about the longitudinal axis according to arrow P 4 so that the baffle plate 12 can be rotated and / or displaced along the arrow P 3 in the region of the impinging substance jet 4, for example ,
  • FIG 3d is a section of a baffle plate 12 with a parabolic reflective surfaces 16 shown.
  • the Reflection surface 16 extends in the axial direction of Baffle plate 12.
  • FIG. 3e shows a baffle plate 12 with a parabolic shape longitudinal groove 17, wherein the groove 17 in the region of Impact of the material jet 4, a U-shaped recess 18th having.
  • the grooves 17 of Figures 3d and 3e can both U-shaped as well as V-shaped.
  • the baffle plate 12 more longitudinal grooves 17 and a plurality of recesses 18th so that numerous impact areas on the Impact plate 12 can be realized.
  • FIG 4 is a baffle plate 12 with a blind hole-like Well represented.
  • the blind hole-like depression, the optionally also formed as a longitudinal groove 17 can, has the reflection surface 16.
  • the fabric jet 4 is such reflects that of the transition region of the bore 13 and the bore 15 ablates in a predetermined manner.
  • FIG. 5 shows a baffle plate 12 having a plurality of, in particular longitudinal grooves 17, wherein due to the rotationally symmetrical design, the baffle plate 12 can be rotated as needed according to arrow P 4 , so that another groove 17, the transition region of the bore 13 and the bore 15 removes.
  • the baffle plate 12 can be designed such that a machining sequence can be provided by turning the baffle plate 12 according to the arrow P 4 .
  • the reflection of the material jet 4 is influenced such that the transition region of the bore 15 can be advantageously removed with the bore 13.
  • the rotation according to arrow P 4 and control of the rotational speed and an asymmetrical machining is possible.
  • a plurality of corresponding and / or different contours can be mounted in succession on the baffle plate 12 in the axial direction.
  • FIG. 7 shows a device which is not affected by the scope of protection, wherein the baffle plate 12 is designed to be comparable with the baffle plate 12 according to FIG. 3b.
  • the material jet 4 impinges on the reflection surface 16 in such a way that a one-sided hollowing of the workpiece 8 takes place.
  • the baffle plate 12 can be moved or rotated according to the arrows P 1 and P 2 , so that even more complex, in particular rotationally symmetrical hollow shapes in the workpiece 8 can be generated.
  • an opening or connection of the bore 9 to a blind hole not shown in detail can be made.
  • FIG. 8 shows a suspension jet device which is not affected by the scope of protection, wherein the suspension mixture is transported by means of a probe 19 into the interior of the workpiece.
  • a connection is made between the bore 9 and the blind bore 10, wherein a cavity 20 is generated in the interior of the workpiece 8 at the same time or with a time offset.
  • the probe 19 is moved or rotated according to the arrows P 2 and / or P 1 .
  • the workpiece 8 may be a diesel nozzle or the like.
  • baffles 7, 12 arbitrary, more complex areas inside, in particular removed in hard to reach areas of the workpiece 8 or rounded. This can be done by moving the Baffle elements 7, 12, of the workpiece 8 and / or the Beam generating unit produces the most complex molds be, in particular by rotating, panning and / or Scan subsequent elements.
  • the baffle element 7, 12 is preferably made of a very wear-resistant material manufactured or has appropriate inserts or like that.
  • the diameter and the Geometry to be produced in a predetermined manner in particular the diameter and the Geometry to be produced in a predetermined manner.
  • the Hole transition can advantageously almost arbitrary be formed, in particular round, elliptical or polygonal.
  • One possibility is for example the Change in the nozzle geometry and the generated thereby larger beam diameter, with a correspondingly larger Hole can be produced.
  • a conical, defocused Stoffstrahl 4 the bore transition in addition to a advantageous slope or rounding or the like Mistake.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

A device and a method for the removal of material arranged within a workpiece (8) are disclosed, whereby at least one jet generating unit (5, 6), for generation of a material jet (4), is provided, which may be directly applied to the internal regions of the workplace (8) which are difficult to access and which also guarantees an improvement in the fatigue strength of the workpiece (8). According to the invention, the above is achieved, whereby a directing unit (12), for directing the material jet (4), arranged within the workpiece, is provided in a pre-determined region of the workpiece (8).

Description

Die Erfindung betrifft ein Verfahren zum Abtragen von einem im Inneren eines Werkstücks angeordneten Material. Bei einem aus der DE 198 09 367 A1 beschriebenen Verfahren findet eine Vorrichtung Verwendung, bei der an der Spitze einer Einrichtung zur Erzeugung eines Stoffstrahls eine Richteinheit bzw. Reflexionseinheit angeordnet ist, welche mit der Vorrichtung zur Erzeugung des Stofistrahls fest verbunden ist. Mittels der bekannten Vorrichtung, welche den ursprünglichen Stoffstrahl aus seiner Richtung gegen die Wand einer Bohrung ablenkt, lässt sich ein Materialabtrag im Bereich der Bohrungswand bewirken. Ähnliche Vorrichtungen dieser Art, bei der die Richteinheiten stets mit der Einrichtung zur Erzeugung des Stoffstrahls fest verbunden sind, sind weiterhin aus der US 5,664,992, der DD 294 891 A5 und der US 2,439,032 bekannt. Problematisch ist oftmals der Einsatz derartiger Vorrichtungen im Bereich von Bohrungsverschneidungen, wo aufgrund der starr an der Spitze der Vorrichtungen zur Erzeugung des Stoffstrahls angeordneten Richteinheiten es beispielsweise zu räumlichen Problemen im Bereich der Bohrungsverschneidungen kommen kann, die den Einsatz der bekannten Vorrichtungen einschränken. Aufgabe der Erfindung ist es, ein Verfahren bereitzustellen, welches ein problemloses Abtragen von Material im Inneren eines Werkstücks im Bereich von Bohrungsverschneidungen ermöglicht. Diese Aufgabe wird bei dem Verfahren gemäß Anspruch 1 gelöst. Insbesondere durch die räumliche Trennung zwischen Strahlerzeugungseinheit und Richteinheit wird eine wesentlich bessere Zugänglichkeit bzw. Flexibilität der verwendeten Vorrichtung im Bereich von Botuungsverschneidungen dadurch erzielt, dass die beiden Einheiten in unterschiedliche Bohrungen eingebracht werden und so an unterschiedlichen Bereichen der Bohrungsverschneidung angeordnet sein können. Eine zum Durchführen des Verfahrens gemäß Anspruch 1 geeignete Vorrichtung sowie vorteilhafte Weiterbildungen dieser Vorrichtung sind in den Ansprüchen 3 bis 8 aufgeführt. The invention relates to a method for removing one inside a Workpiece arranged material. In one described in DE 198 09 367 A1 Procedure finds a device use in which at the top of a facility a directional unit or reflection unit is arranged to generate a substance jet, which is firmly connected to the device for generating the jet of material. By means of known device, which the original material jet from its direction against the wall of a bore deflects, can be a material removal in the field of Drill hole wall. Similar devices of this type, in which the straightening units are always firmly connected to the device for generating the material jet, are also known from US 5,664,992, DD 294 891 A5 and US 2,439,032. The problem is often the use of such devices in the range of Bore intersections, where due to the rigid at the top of the devices for Generation of the material beam arranged straightening units, for example, to spatial Problems may arise in the area of bore intersections, which may be the use of the restrict known devices. The object of the invention is a method to provide a problem-free removal of material inside a Workpiece in the area of Bohrverschneidungen allows. This task will solved in the method according to claim 1. In particular, by the spatial Separation between the beam generating unit and the straightening unit becomes essential better accessibility or flexibility of the device used in the range of Botuungsverschneidungen achieved by the fact that the two units in different Holes are introduced and so on different areas of Bohrungsverschneidung can be arranged. One for carrying out the method according to claim 1 suitable device and advantageous developments of this Device are listed in claims 3 to 8.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird anhand der Figuren nachfolgend näher erläutert.An embodiment of the invention is in the drawing and will become more apparent from the figures below explained.

Im Einzelnen zeigen:

Figur 1
eine schematische Schnittdarstellung einer nicht erfindungsgemäßen Vorrichtung mit einem fixierten Reflexionselement,
Figur 2
eine schematische Darstellung einer, erfindungsgemäßen Vorrichtung mit einem separaten Reflexionselement,
Figur 3
verschiedenste Ausführungsformen mehrerer Reflexionselemente in schematischer Darstellung,
Figur 4
eine schematische Querschnittdarstellung eines Ausschnitts einer weiteren, erfindungsgemäßen Vorrichtung,
Figur 5
eine schematische Querschnittdarstellung eines Ausschnitts einer weiteren, erfindungsgemäßen Vorrichtung,
Figur 6
eine schematische Querschnittdarstellung eines Ausschnitts einer weiteren, erfindungsgemäßen Vorrichtung,
Figur 7
eine schematische Darstellung einer nicht erfindungsgemäßen Vorrichtung und
Figur 8
einen schematischen Querschnitt einer nicht erfindungsgemäßen Suspensionsstrahlvorrichtung.
In detail show:
FIG. 1
a schematic sectional view of a device not according to the invention with a fixed reflection element,
FIG. 2
a schematic representation of a device according to the invention with a separate reflection element,
FIG. 3
various embodiments of several reflection elements in a schematic representation,
FIG. 4
a schematic cross-sectional view of a section of another device according to the invention,
FIG. 5
a schematic cross-sectional view of a section of another device according to the invention,
FIG. 6
a schematic cross-sectional view of a section of another device according to the invention,
FIG. 7
a schematic representation of a device not according to the invention and
FIG. 8
a schematic cross section of a non-inventive suspension jet device.

In Figur 1 ist schematisch eine nicht vom Schutzumfang betroffene Injektorstrahlvorrichtung dargestellt, wobei ein Wasserstrahl 1 einen Abrasivstoff 2 in einer Mischkammer 5 ansaugt, so dass ein Mischstrahl 3 in einer Sonde 6 erzeugt wird. Aus der Sonde 6 tritt ein Stoffstrahl 4 aus, der mittels eines Reflexionselements 7 auf einen vorgegebenen Bereich im Innern eines Werkstücks 8 gerichtet wird. Bei dem vorgegebenen Bereich handelt es sich um einen vergleichsweise schwer zugänglichen Bereich, z.B. da eine Bohrung 9, durch die die Sonde 6 einzuführen ist, einen relativ kleinen Durchmesser beispielsweise von wenigen Millimetern aufweist.In Figure 1 is schematically a not affected by the scope Injector jet device shown, wherein a Water jet 1 an abrasive 2 in a mixing chamber. 5 sucks, so that a mixed jet 3 generated in a probe 6 becomes. From the probe 6 exits a stream of material 4, the by means of a reflection element 7 to a predetermined Area is directed inside a workpiece 8. In which given range is a comparatively hard to reach area, e.g. as a hole 9, through the probe 6 is to be inserted, a relatively small Diameter example, has a few millimeters.

Gemäß Figur 1 wird mit Hilfe der Vorrichtung ein Durchgang von der Bohrung 9 zu einer zweiten, wesentlich kleineren Bohrung 10 hergestellt.According to Figure 1 is using the Device a passage from the bore 9 to a second, made much smaller bore 10.

Darüber hinaus ist der Figur 1 zu entnehmen, dass mittels einem Halteelement 11 das Reflexionselement 7 an der Sonde 6 fixiert ist.In addition, it can be seen from FIG. 1 that by means of a holding element 11, the reflection element 7 on the probe. 6 is fixed.

Die Vorrichtung ist gemäß einem Pfeil P1 in axialer Richtung der Sonde 6 bewegbar. Zusätzlich ist die Vorrichtung gemäß einem Pfeil P2 um die Achse der Sonde 6 drehbar. Hierdurch wird ermöglicht, dass nahezu beliebig ausgebildete Bereiche im Innern des Werkstücks 8 abgetragen werden können. Eine nicht näher dargestellte Steuereinheit steuert hierfür die Bewegung der Vorrichtung. The device is movable according to an arrow P 1 in the axial direction of the probe 6. In addition, the device according to an arrow P 2 is rotatable about the axis of the probe 6. This makes it possible that almost arbitrarily formed areas in the interior of the workpiece 8 can be removed. A control unit, not shown, controls the movement of the device for this purpose.

Generell kann durch Rotation gemäß Pfeil P2 eine ringförmige Aushöhlung der Bohrung 9 erzeugt werden. Bei der Bohrung 9 kann es sich im Gegensatz zur dargestellten Variante auch um eine Sacklochbohrung handeln.In general, an annular cavity of the bore 9 can be generated by rotation in accordance with arrow P 2 . In the bore 9 may be in contrast to the illustrated variant, a blind hole.

In Figur 2 ist eine Vorrichtung gemäß der Erfindung dargestellt, wobei im Gegensatz zu der Vorrichtung gemäß Figur 1 kein an der Sonde 6 fixiertes Halteelement 11 vorgesehen ist, sondern eine separate Prallplatte 12, die durch eine zweite Bohrung 13 in das Werkstück 8 eingeführt ist.FIG. 2 shows a device according to the invention shown, in contrast to the device according to FIG. 1 no holding element 11 fixed to the probe 6 is provided, but a separate baffle plate 12, the introduced through a second bore 13 in the workpiece 8 is.

Bei dem Werkstück 8 gemäß Figur 2 handelt es sich beispielsweise um ein sogenanntes Rail (Druckspeicher) aus dem System Common Rail. Das Rail 8 umfasst insbesondere Abzweigungen 14, die jeweils eine Bohrung 15 aufweisen. Im Allgemeinen werden sowohl die Bohrung 13 als auch die Bohrungen 15 mittels spanabhebender Verfahren hergestellt, so dass im Übergangsbereich zwischen den Bohrungen 13, 15 Grate bzw. scharfe Kanten entstehen.The workpiece 8 according to FIG. 2 is for example, a so-called rail (pressure accumulator) the system common rail. The rail 8 includes in particular Branches 14, each having a bore 15. in the Generally, both the bore 13 and the Bores 15 produced by machining, so that in the transition area between the holes 13, 15 burrs or sharp edges arise.

Gemäß der Erfindung wird die Sonde 6 in die Bohrung 15 eingeführt und die Prallplatte 12 in die Bohrung 13, so dass der Stoffstrahl 4 an der Prallplatte 12 derart reflektiert wird, dass dieser den Übergangsbereich in genau vorgegebener Weise entgratet bzw. abrundet. Hierbei ist besonders positiv, dass durch die Impulswirkung des Stoffstrahls 4 beim Aufprall auf das Werkstück 8 eine Verdichtung des Gefüges und somit Druckeigenspannungen des Werkstücks 8 erzeugt werden. Diese Druckeigenspannungen wirken sich vorteilhaft bei der späteren Anwendung des Rails 8 aus, wobei dies insbesondere einer pulsierenden Belastung bei vergleichsweise hohen Drücken ausgesetzt ist.According to the invention, the probe 6 in the bore 15th introduced and the baffle plate 12 in the bore 13, so that the substance jet 4 is reflected on the baffle plate 12 in such a way is that this the transition area in exactly predetermined Deburred or rounded off. This is especially positive, that by the impulse effect of the material jet 4 on impact on the workpiece 8 a compaction of the structure and thus Compressive stresses of the workpiece 8 are generated. These Compressive stresses have an advantageous effect on the later Application of the rail 8, this particular one pulsating load at comparatively high pressures is exposed.

In Figur 3 sind unterschiedlich ausgebildete Prallplatten 12 schematisch dargestellt. Figur 3a weist sowohl eine Seitenals auch einen Frontsicht einer Prallplatte 12 mit planarer, senkrecht zum Stoffstrahl 4 ausgerichteter Reflexionsfläche 16 auf. Die Prallplatte 12 gemäß Figur 3a entspricht weitgehend der Prallplatte 12 gemäß Figur 2.In Figure 3 are differently shaped baffles 12th shown schematically. Figure 3a has both a Seitenals also a front view of a baffle plate 12 with planar, perpendicular to the material beam 4 aligned reflection surface 16 on. The baffle plate 12 according to Figure 3a corresponds largely the baffle plate 12 according to FIG. 2

Die Prallplatte 12 gemäß Figur 3b ist wiederum in Seiten- als auch Frontansicht dargestellt und weist eine planare Reflexionsfläche 16 auf, wobei diese jedoch winklig zur Strahlrichtung des Stoffstrahls 4 angeordnet ist.The baffle plate 12 according to Figure 3b is again in side than Also shown front view and has a planar Reflection surface 16, but this angle to the Beam direction of the fabric jet 4 is arranged.

In Figur 3c ist in Seiten- und Frontansicht eine Prallplatte 12 mit mehreren planaren, senkrecht zum Stoffstrahl 4 ausgerichteten Reflexionsflächen 16 dargestellt. Die Prallplatte 12 gemäß Figur 3c kann gegebenenfalls gemäß Pfeil P4 um die Längsachse rotiert werden, so dass beispielsweise bei Überschreiten einer vorgegebenen Abrasion der Prallplatte 12 im Bereich des aufprallenden Stoffstrahls 4 die Prallplatte 12 gedreht und/oder längs des Pfeils P3 verschoben werden kann.FIG. 3c shows a side and front view of a baffle plate 12 with a plurality of planar reflection surfaces 16 oriented perpendicular to the material jet 4. The baffle plate 12 according to FIG. 3 c can optionally be rotated about the longitudinal axis according to arrow P 4 so that the baffle plate 12 can be rotated and / or displaced along the arrow P 3 in the region of the impinging substance jet 4, for example ,

In Figur 3d ist ein Ausschnitt einer Prallplatte 12 mit einer parabelförmigen Reflexionsflächen 16 dargestellt. Die Reflexionsfläche 16 erstreckt sich in axialer Richtung der Prallplatte 12.In Figure 3d is a section of a baffle plate 12 with a parabolic reflective surfaces 16 shown. The Reflection surface 16 extends in the axial direction of Baffle plate 12.

Figur 3e zeigt eine Prallplatte 12 mit einer parabelförmigen längsgerichteten Nut 17, wobei die Nut 17 im Bereich des Auftreffens des Stoffstrahls 4 eine u-förmige Vertiefung 18 aufweist.FIG. 3e shows a baffle plate 12 with a parabolic shape longitudinal groove 17, wherein the groove 17 in the region of Impact of the material jet 4, a U-shaped recess 18th having.

Insbesondere die Nuten 17 der Figuren 3d und 3e können sowohl u-förmig als auch v-förmig ausgebildet werden. Darüber hinaus kann gegebenenfalls die Prallplatte 12 mehrere längsgerichtete Nuten 17 sowie mehrere Vertiefungen 18 aufweisen, so dass zahlreiche Aufprallbereiche auf der Prallplatte 12 realisiert werden.In particular, the grooves 17 of Figures 3d and 3e can both U-shaped as well as V-shaped. Furthermore Optionally, the baffle plate 12 more longitudinal grooves 17 and a plurality of recesses 18th so that numerous impact areas on the Impact plate 12 can be realized.

In Figur 4 ist eine Prallplatte 12 mit einer sacklochartigen Vertiefung dargestellt. Die sacklochartige Vertiefung, die gegebenenfalls auch als längsgerichtete Nut 17 ausgebildet werden kann, weist die Reflexionsfläche 16 auf. An der Reflexionsfläche 16 wird der Stoffstrahl 4 derart reflektiert, dass der den Übergangsbereich der Bohrung 13 und der Bohrung 15 in vorgegebener Weise abträgt.In Figure 4 is a baffle plate 12 with a blind hole-like Well represented. The blind hole-like depression, the optionally also formed as a longitudinal groove 17 can, has the reflection surface 16. At the Reflecting surface 16, the fabric jet 4 is such reflects that of the transition region of the bore 13 and the bore 15 ablates in a predetermined manner.

Figur 5 zeigt eine Prallplatte 12 mit mehreren, insbesondere längsgerichteten Nuten 17, wobei aufgrund der drehsymmetrischen Ausbildung die Prallplatte 12 bei Bedarf gemäß Pfeil P4 verdreht werden kann, so dass eine andere Nut 17 den Übergangsbereich der Bohrung 13 und der Bohrung 15 abträgt.Figure 5 shows a baffle plate 12 having a plurality of, in particular longitudinal grooves 17, wherein due to the rotationally symmetrical design, the baffle plate 12 can be rotated as needed according to arrow P 4 , so that another groove 17, the transition region of the bore 13 and the bore 15 removes.

Gemäß Figur 6 kann die Prallplatte 12 derart ausgebildet werden, dass durch Drehen der Prallplatte 12 gemäß Pfeil P4 ein Bearbeitungsablauf vorgesehen werden kann. Hierbei wird die Reflexion des Stoffstrahls 4 derart beeinflusst, dass der Übergangsbereich der Bohrung 15 mit der Bohrung 13 vorteilhaft abgetragen werden kann. Durch die Rotation gemäß Pfeil P4 und Steuerung der Drehgeschwindigkeit ist auch eine unsymmetrische Bearbeitung möglich. Vorzugsweise können mehrere entsprechende und/oder unterschiedliche Konturen in axialer Richtung hintereinander auf der Prallplatte 12 angebracht werden.According to FIG. 6, the baffle plate 12 can be designed such that a machining sequence can be provided by turning the baffle plate 12 according to the arrow P 4 . Here, the reflection of the material jet 4 is influenced such that the transition region of the bore 15 can be advantageously removed with the bore 13. The rotation according to arrow P 4 and control of the rotational speed and an asymmetrical machining is possible. Preferably, a plurality of corresponding and / or different contours can be mounted in succession on the baffle plate 12 in the axial direction.

In Figur 7 ist eine nicht vom Schutzumfang betroffen Vorrichtung dargestellt, wobei die Prallplatte 12 mit der Prallplatte 12 gemäß Figur 3b vergleichbar ausgebildet ist. Hierbei trifft der Stoffstrahl 4 auf die Reflexionsfläche 16 in der Weise, dass eine einseitige Aushöhlung des Werkstücks 8 erfolgt. Gegebenenfalls kann die Prallplatte 12 gemäß den Pfeilen P1 bzw. P2 verschoben bzw. verdreht werden, so dass auch komplexere, insbesondere rotationssymmetrische Hohlformen im Werkstück 8 erzeugt werden können. Darüber hinaus kann mittels der Vorrichtung gemäß Figur 7 auch ein Öffnen bzw. verbinden der Bohrung 9 zu einer nicht näher dargestellten Sacklochbohrung erfolgen.FIG. 7 shows a device which is not affected by the scope of protection, wherein the baffle plate 12 is designed to be comparable with the baffle plate 12 according to FIG. 3b. Here, the material jet 4 impinges on the reflection surface 16 in such a way that a one-sided hollowing of the workpiece 8 takes place. Optionally, the baffle plate 12 can be moved or rotated according to the arrows P 1 and P 2 , so that even more complex, in particular rotationally symmetrical hollow shapes in the workpiece 8 can be generated. In addition, by means of the device according to FIG. 7, an opening or connection of the bore 9 to a blind hole not shown in detail can be made.

In Figur 8 ist eine nicht vom Schutzumfang betroffene Suspensionsstrahlvorrichtung dargestellt, wobei das Suspensionsgemisch mittels einer Sonde 19 in das Innere des Werkstücks transportiert wird. Beispielhaft wird gemäß Figur 8 eine Verbindung zwischen der Bohrung 9 und der Sacklochbohrung 10 hergestellt, wobei gleichzeitig oder zeitlich versetzt ein Hohlraum 20 im Inneren des Werkstücks 8 erzeugt wird. Hierfür wird die Sonde 19 gemäß den Pfeilen P2 und/oder P1 verschoben bzw. verdreht. Beispielsweise kann es sich bei dem Werkstück 8 um eine Dieseldüse oder dergleichen handeln.FIG. 8 shows a suspension jet device which is not affected by the scope of protection, wherein the suspension mixture is transported by means of a probe 19 into the interior of the workpiece. By way of example, according to FIG. 8, a connection is made between the bore 9 and the blind bore 10, wherein a cavity 20 is generated in the interior of the workpiece 8 at the same time or with a time offset. For this purpose, the probe 19 is moved or rotated according to the arrows P 2 and / or P 1 . For example, the workpiece 8 may be a diesel nozzle or the like.

Grundsätzlich kann durch beliebige Formen der Prallelemente 7, 12 beliebige, komplexere Bereiche im Inneren, insbesondere in schwer zugänglichen Bereichen des Werkstücks 8 abgetragen bzw. verrundet werden. Hierfür kann durch Bewegung der Prallelemente 7, 12, des Werkstücks 8 und/oder der Strahlerzeugungseinheit komplexeste Hohlformen erzeugt werden, insbesondere durch Rotieren, Schwenken und/oder Scannen entsnrechender Elemente.Basically, by any forms of baffles 7, 12 arbitrary, more complex areas inside, in particular removed in hard to reach areas of the workpiece 8 or rounded. This can be done by moving the Baffle elements 7, 12, of the workpiece 8 and / or the Beam generating unit produces the most complex molds be, in particular by rotating, panning and / or Scan subsequent elements.

Beispielsweise wird der Abtrag durch Hochdruckwasserstrahlen, die gegebenenfalls bis zu 8000 bar Druck aufweisen, erzeugt, wobei die Abtragwirkung durch Zumischung von abrasiven Zusätzen verstärkt werden kann. Das Prallelement 7, 12 ist vorzugsweise aus einem sehr verschleißfesten Werkstoff hergestellt bzw. weist entsprechende Einsätze oder dergleichen auf.For example, the removal by high-pressure water jets, which optionally have up to 8000 bar pressure produced, the removal effect by admixture of abrasive Additives can be strengthened. The baffle element 7, 12 is preferably made of a very wear-resistant material manufactured or has appropriate inserts or like that.

Generell kann vor allem beim Herstellen einer Verbindung zwischen einem Sackloch und einer zweiten Bohrung oder dergleichen die Form bzw. Ausgestaltung des Verbindungsbereichs, insbesondere der Durchmesser sowie die Geometrie, in vorgegebener Weise hergestellt werden. Der Bohrungsübergang kann in vorteilhafter Weise nahezu beliebig ausgebildet werden, insbesondere rund, elliptisch oder polygonförmig. Eine Möglichkeit ist beispielsweise die Veränderung der Düsengeometrie und des hierdurch erzeugten größeren Strahldurchmessers, wobei eine entsprechend größere Bohrung erzeugt werden kann. Ein konischer, defokussierter Stoffstrahl 4 kann den Bohrungsübergang zusätzlich mit einer vorteilhaften Schräge bzw. Abrundung oder dergleichen versehen.Generally speaking, especially when connecting between a blind hole and a second hole or like the shape or configuration of the Connection area, in particular the diameter and the Geometry to be produced in a predetermined manner. Of the Hole transition can advantageously almost arbitrary be formed, in particular round, elliptical or polygonal. One possibility is for example the Change in the nozzle geometry and the generated thereby larger beam diameter, with a correspondingly larger Hole can be produced. A conical, defocused Stoffstrahl 4, the bore transition in addition to a advantageous slope or rounding or the like Mistake.

Claims (8)

  1. Method for the removal of a material located inside a workpiece (8), in the region of a bore intersection, in which at least one jet generation unit (5, 6) for generating a substance jet (4) co-operates with a directional unit (12) arranged inside the workpiece (8) and comprising a reflection element, for directing the substance jet (4) onto the region of the bore intersection, the jet generation unit (5, 6) and the directional unit (12) being designed as separate components, and the jet generation unit (5, 6) being introduced into a first bore of the workpiece (8) and the directional unit (12) into a second bore of the workpiece (8).
  2. Method according to Claim 1, characterized in that the substance jet (4) used is at least one fluid jet (1) and/or one solid jet (2) with numerous jet bodies.
  3. Device for carrying out the method according to Claim 1 or 2, with at least one jet generation unit (5, 6) for generating a substance jet (4) and with a directional unit (12) comprising a reflection element, for directing the substance jet (4) onto the region of a bore intersection, the directional unit (12) and the jet generation unit (5, 6) being designed as separate components not connected to one another, the jet generation unit (5, 6) being designed for introduction into a first bore of the workpiece (8) and the directional unit (12) being designed for introduction into a second bore of the workpiece (8), and a jet direction of the substance jet (4) of essentially between 45° and 180° with respect to a transport direction of the substance of the jet generation unit (5, 6) being provided.
  4. Device according to Claim 3, characterized in that the workpiece (8), the directional unit (12) and/or the jet generation unit (5, 6) are designed to be at least partially movable.
  5. Device according to Claim 3 or 4, characterized in that the shape of the directional unit (12) is adapted at least to the predetermined region of the workpiece (8).
  6. Device according to one of Claims 3 to 5, characterized in that at least one reflection surface (16) is arranged in a recess (17, 18) of the reflection element.
  7. Device according to Claim 6, characterized in that the recess (17, 18) is designed as a recess (17) longitudinally directed in the axial direction of the reflection element.
  8. Device according to one of Claims 3 to 7, characterized in that at least one protective element (12) for the protection of portions of the workpiece (8) which are not to be jet-blasted is provided, and in that the reflection element comprises the protective element (12).
EP02742799A 2001-07-04 2002-06-06 Process and device for the removal of material arranged within a workpiece Expired - Lifetime EP1406749B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10132451A DE10132451A1 (en) 2001-07-04 2001-07-04 Device for removing material arranged inside a workpiece
DE10132451 2001-07-04
PCT/DE2002/002054 WO2003004219A1 (en) 2001-07-04 2002-06-06 Device for the removal of material arranged within a workpiece

Publications (2)

Publication Number Publication Date
EP1406749A1 EP1406749A1 (en) 2004-04-14
EP1406749B1 true EP1406749B1 (en) 2005-08-10

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EP02742799A Expired - Lifetime EP1406749B1 (en) 2001-07-04 2002-06-06 Process and device for the removal of material arranged within a workpiece

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EP (1) EP1406749B1 (en)
CN (1) CN100366387C (en)
DE (2) DE10132451A1 (en)
HU (1) HUP0400383A2 (en)
WO (1) WO2003004219A1 (en)

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Publication number Priority date Publication date Assignee Title
JP5066430B2 (en) * 2007-11-20 2012-11-07 日本発條株式会社 Reflective member for shot peening and shot peening method using the same
DE102009001651A1 (en) 2009-03-19 2010-09-23 Robert Bosch Gmbh High-pressure component for a common rail fuel injection system, where the component is made of a hardenable material, comprises an outer area and an inner area, which is flowed through by a fluid remaining under high pressure
DE102010043285A1 (en) 2010-11-03 2012-05-03 Aktiebolaget Skf Method, blasting medium and apparatus for treating a component
CN102825551B (en) * 2012-08-15 2015-03-25 上海中国弹簧制造有限公司 Strengthening process for shot blasting on inner wall of stabilizer bar and shot blasting equipment used therein
DE102014102147B4 (en) * 2014-02-19 2017-03-09 Wheelabrator Group Gmbh A method of solidifying blasting a pipe inner wall of a curved workpiece with a workpiece bore and jet nozzle unit and working chamber system therefor
CN108296990A (en) * 2018-04-11 2018-07-20 佛山市穗远恒科建材有限公司 A kind of metal pipe material device for dedusting inner wall
CN109551378A (en) * 2018-11-30 2019-04-02 中国航空工业集团公司金城南京机电液压工程研究中心 A kind of multistation jet stream burr removal fixture
CN110076698B (en) * 2019-05-16 2021-02-02 苏州同谊联擎动力科技有限公司 Pipeline inner wall grinding process for aluminum alloy casting with oil way

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US2439032A (en) * 1945-11-01 1948-04-06 Gen Motors Corp Shot blasting nozzle
DD282414A5 (en) * 1989-04-14 1990-09-12 Ingenieurschule Fuer Kraft Und STRAHLDUESE FOR SURFACE TREATMENT OF HEAVY ADDITIVE COMPONENTS
DE4015412C1 (en) * 1990-05-14 1991-06-20 Lothar 3300 Braunschweig De Clavey Metal work deburring tool - has sonde inserted into bore to discharge high pressure water
DD294891A5 (en) * 1990-06-05 1991-10-17 Maschinenfabrik Sangershausen Gmbh,De DEVICE FOR DISCHARGING SMALL HOLES
US5664992A (en) * 1994-06-20 1997-09-09 Abclean America, Inc. Apparatus and method for cleaning tubular members
DE19809367B4 (en) * 1998-03-05 2007-04-05 Nagel Maschinen- Und Werkzeugfabrik Gmbh Method and device for fine machining of piston raceways

Also Published As

Publication number Publication date
EP1406749A1 (en) 2004-04-14
DE50203902D1 (en) 2005-09-15
WO2003004219A1 (en) 2003-01-16
CN1524028A (en) 2004-08-25
HUP0400383A2 (en) 2005-06-28
DE10132451A1 (en) 2003-01-30
CN100366387C (en) 2008-02-06

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