EP1360035B1 - Ensemble turbine de sablage - Google Patents

Ensemble turbine de sablage Download PDF

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Publication number
EP1360035B1
EP1360035B1 EP02702308A EP02702308A EP1360035B1 EP 1360035 B1 EP1360035 B1 EP 1360035B1 EP 02702308 A EP02702308 A EP 02702308A EP 02702308 A EP02702308 A EP 02702308A EP 1360035 B1 EP1360035 B1 EP 1360035B1
Authority
EP
European Patent Office
Prior art keywords
jet
shell
guiding shell
aperture
blast wheel
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.)
Expired - Lifetime
Application number
EP02702308A
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German (de)
English (en)
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EP1360035A1 (fr
Inventor
Jennifer Schlick
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP1360035A1 publication Critical patent/EP1360035A1/fr
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/06—Impeller wheels; Rotor blades therefor
    • B24C5/068—Transferring the abrasive particles from the feeding means onto the propeller blades, e.g. using central impellers

Definitions

  • the invention relates to a blast wheel for surface treatment of workpieces, comprising a blast wheel having a plurality of radially arranged thereon throwing vanes, a coaxial with the impeller and a likewise arranged coaxially thereto, adjustable Strahlleithggse, with which the direction of the machining beam by adjustment a window of the jet sleeve is controlled (see for example US-A-3368308).
  • blower wheel assembly is also known, which is provided with an external or internal sensor for determining the wear and the wear direction at the window of the jet guide sleeve.
  • the sensor is connected to an electronic control circuit.
  • an angular adjustment of the jet guide sleeve can be triggered via an actuator.
  • This blast wheel assembly has been proven for most applications, as it allows an automatic tracking of the control edge, which is continuously removed during operation.
  • An arrangement of sensors in the control edge is also not possible with blasting sleeves made of sintered metal, but this material is advantageous due to its long service life.
  • two coaxial sleeves are provided, which can be placed into one another and which have both window-like openings on their circumference, which allow blasting material to be conducted from a distributor wheel located within the two sleeves into the free angle between two turbine blades.
  • the opening angle and the opening height increase, as the edges of the Leithggsenö réelle and the limiting sleeve opening are removed from the blasting agent. Due to the enlarged opening area, the jet pattern of the spinning arrangement on the workpiece also changes. To counteract this, the beam limiting sleeve be rotated so far opposite the Strahlleithggse until a portion of the circumference of the Strahlbegrenzungshülse covers a portion of the Strahlleithggülse. Instead of the rear boundary edge of the Strahlleithggse then limits the beam boundary edge of the Strahlbegrenzungshülse the opening angle for the exit of the blasting agent.
  • the exit window is defined by the overlap of the window-like openings in the two sleeves.
  • the Leithülsenö réelle and the limiting sleeve opening have a same opening angle and a same opening height, so that they are to be brought into a starting position in which they overlap.
  • the maximum opening area is available at the start of operation with new sleeves.
  • the Schlenderradan teaspoon invention provides that the beam limiting sleeve relative to the jet sleeve is axially displaceable to each other.
  • a further enlargement of the opening area can be compensated, which is based on wear of the sheet edge running along the circumference of the guide or limiting sleeve opening.
  • the window opening for the blasting agent outlet can also be completely closed.
  • the spinner wheel assembly can already be run over non-radiating workpiece areas at the outlet of the spinner or the workpiece can be removed from the sphere of action of the spinner. Residues of blasting media, which are still discharged from the outgoing distributor wheel, are retained at the closed Leithülsenö réelle. An adjustment of the jet guide sleeve and / or the beam-limiting sleeve is relatively easy, since these parts do not rotate with the blower itself.
  • the jet guide sleeve can be adjusted so far that the removal of its control edge is compensated.
  • the beam limiting sleeve and the adjustment of its beam limiting edge can be adjusted so far that the removal of its control edge is compensated.
  • a further advantageous embodiment of the invention provides for the arrangement of at least one external or internal sensor for determining the wear and the wear direction in the guide sleeve opening of the jet guiding sleeve and / or a window opening of the beam limiting sleeve.
  • the sensor is connected to an electronic control circuit.
  • an angular adjustment of the jet guide sleeve and / or the beam limiting sleeve can be triggered via in each case at least one actuator.
  • a centrifugal blasting machine which has a blast wheel 10 with radially arranged on this throwing blades 11.1, ..., 11.n, a distributor 12, a surrounding this Strahlleithggse 1 and a beam limiting sleeve 20.
  • the internal distributor wheel 12, the jet guiding sleeve 1 and the jet limiting sleeve 20 are each arranged concentrically with one another and with the centrifugal wheel 10.
  • the Strahlbegrenzungshülse 20 is in the black drawn Strahlleithggse 1.
  • Both the Strahlleithülse 1 and the Strahlbegrenzungshülse 20 have window openings on its periphery, through the blasting agent in the angular gap between two of the throwing blades 11.1 ,. .., 11.n can escape.
  • the centrifugal jet 15 passes along a control edge 5 of the blasting sleeve 1 on the front of the throwing blade 11 and is considerably accelerated by this, so that then impinge the individual particles of the blasting abrasive with high energy on a workpiece surface 16.
  • control edge 5 of the jet guide sleeve 1 plays an important role, since this determines the position and size of the Leithülsenö réelle and the radiation angle of the blasting agent. Due to wear, the control edge 5 is removed, which increases the window opening. The cleaning performance and the accuracy of the spray pattern deteriorate significantly. The same applies to the parallel to the control edge 5 rear boundary edge. 6
  • FIG. 2 shows a beam limiting sleeve 20, which is inserted into a jet guiding sleeve 1.
  • the two parts are rotatable against each other.
  • the adjustment of at least one of the sleeves is carried out by a servomotor.
  • the jet guiding sleeve 1 and the beam limiting sleeve 20 each have a window-like Leithggsen- or limiting sleeve opening 2; 22, which by axially extending control and boundary edges 5,6; 25,26 and preferably by circumferentially parallel sheet edges 7,8; 27,28 be limited.
  • the control edges 5; 25 lie directly in the region of the ejected by the distributor wheel 12 stream of abrasive fluid and therefore wear the strongest.
  • the Strahlleithggse 1 and the beam limiting sleeve 20 can be employed against each other so that a worn control edge 5 of the outer Strahlleithggse 1 is covered by the control edge 25 of the inner Strahlbegrenzungshülse 20.
  • the beam-limiting sleeve fulfills the original function of the guide sleeve and vice versa.
  • the jet guide sleeve 1 and the beam-limiting sleeve 20 are also arranged axially against each other yet slidably.
  • two of the sheet edges 7, 27 and 8, 28 to bring into engagement with the blasting agent, whereby the height H of the opening for the blasting material outlet is reduced.
  • the outlet opening is defined on the one hand by the inner beam limiting sleeve 20 with its boundary edge 26 and lower arc edge 28 and on the other hand by the jet sleeve 1 with its control edge 5 and upper arc edge 6.
  • FIG. 4 the function of the jet guide sleeve 1 and the beam limiting sleeve 20 is shown schematically in operation.
  • the blasting agent 15 is accelerated by a distributor wheel 12 and thrown into the space between two throwing blades 11.1, 11.2.
  • the jet guide sleeve 1 is set so that its control edge 5 deflects the blasting agent from the lower edge of the throwing blade 11.1, so that the latter is not destroyed from below.
  • the Strahlleithggsenö réelle but has become so large in operation that is no longer prevented by the boundary edge 6 of the jet guide sleeve 1 that blasting agent 15 hits the lower edge of the throwing blade 11.2.
  • a boundary edge 26 is provided which takes over the said function of the boundary edge 6.
  • the material of the blasting sleeve 1 and / or the beam limiting sleeve 20 is, for example, high-strength sintered metal or a high-strength alloy, optionally also ceramic material.
  • the sleeves have hardened control or boundary edges at the points exposed to the blasting agent. It can also be provided to form the control and / or boundary edges as exchangeable inserts for the jet guide sleeve or jet limiting sleeve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (7)

  1. Ensemble roue de projection pour le traitement de surface de pièces à travailler, avec une roue de projection (10) qui comporte plusieurs palettes de projection (11.1, ..., 11.n) disposées radialement sur celle-ci, une roue distributrice (12) disposée coaxialement par rapport à la roue de projection (10) et une douille de direction de jet (1) ajustable et disposée également coaxialement par rapport à celle-ci, par laquelle la direction du jet de traitement (15) est commandée par réglage d'un orifice (2) de la douille de direction du jet (1), avec une douille de limitation du jet (20) disposée concentriquement par rapport à la douille de direction du jet (1), pouvant subir une rotation relativement à la douille de direction du jet (1) et comportant une ouverture de fenêtre (22) avec une arête de limitation du jet (25), laquelle peut être mise dans une position recouvrant au moins partiellement l'orifice (2) de la douille de direction du jet (1), la douille de limitation du jet (20) étant disposée à l'intérieur ou à l'extérieur de la douille de direction du jet (1),
    caractérisé en ce que la douille de limitation du jet (20) et la douille de direction du jet (1) sont déplaçables axialement relativement l'une à l'autre.
  2. Ensemble roue de projection selon la revendication 1, caractérisé en ce que l'orifice (2) de la douille de direction et l'ouverture de fenêtre (22) ont un même angle d'ouverture et une même hauteur d'ouverture (H).
  3. Ensemble roue de projection selon la revendication 1 ou 2, caractérisé en ce que l'ensemble est pourvu d'au moins un capteur externe ou interne pour déterminer l'usure et le sens de l'usure dans le cas de l'orifice (2) de la douille de direction du jet (1) et/ou de l'ouverture de fenêtre (22) de la douille de limitation du jet (20), en ce que le capteur est relié à un circuit de commande électronique et en ce que, dans le cas d'une réaction du capteur provoquée par l'usure, un déplacement angulaire de la douille de direction du jet (1) et/ou de la douille de limitation du jet (20) peut être déclenché par l'intermédiaire de respectivement au moins un organe de réglage.
  4. Ensemble roue de projection selon l'une des revendications 1 à 3, caractérisé en ce que, en cours de fonctionnement, l'image du jet est modifiable quant à sa taille par déplacement radial et axial de la douille de direction du jet (1) relativement à la douille de limitation du jet (20).
  5. Ensemble roue de projection selon l'une des revendications 1 à 4, caractérisé en ce que l'ouverture de fenêtre (22) peut être entièrement fermée par déplacement des douilles (1 et 20).
  6. Ensemble roue de projection selon l'une des revendications 1 à 5, caractérisé en ce que, à l'aide d'un servomoteur ou d'un mécanisme d'avance pas à pas, la douille de direction du jet (1) peut être déplacée selon une suite donnée de signaux jusqu'à ce que l'érosion de son arête de commande (5) soit compensée.
  7. Ensemble roue de projection selon l'une des revendications 1 à 6, caractérisé en ce que, à l'aide d'un servomoteur ou d'un mécanisme d'avance pas à pas, la douille de limitation du jet (20) peut être déplacée selon une suite donnée de signaux jusqu'à ce que l'érosion de son arête de limitation du jet (25) soit compensée.
EP02702308A 2001-02-02 2002-01-25 Ensemble turbine de sablage Expired - Lifetime EP1360035B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10104703 2001-02-02
DE2001104703 DE10104703C1 (de) 2001-02-02 2001-02-02 Schleuderradanordnung
PCT/EP2002/000749 WO2002062529A1 (fr) 2001-02-02 2002-01-25 Ensemble turbine de sablage

Publications (2)

Publication Number Publication Date
EP1360035A1 EP1360035A1 (fr) 2003-11-12
EP1360035B1 true EP1360035B1 (fr) 2006-05-17

Family

ID=7672617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02702308A Expired - Lifetime EP1360035B1 (fr) 2001-02-02 2002-01-25 Ensemble turbine de sablage

Country Status (3)

Country Link
EP (1) EP1360035B1 (fr)
DE (2) DE10104703C1 (fr)
WO (1) WO2002062529A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10216819A1 (de) * 2002-04-16 2003-11-06 Roesler Oberflaechentechnik Gm Einstellhülse
EP1543922A1 (fr) * 2003-12-15 2005-06-22 Rutten SA-NV Turbine de grenaillage à hautes performances équipée de palettes réversibles
PT2829360E (pt) * 2013-07-19 2016-01-22 Prefer Equipamentos Para Decapagem Lda Caixa de controlo para uma turbina de decapagem e componentes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2286754A (en) * 1934-10-26 1942-06-16 American Foundry Equip Co Abrasive throwing machine
US3368308A (en) * 1964-11-03 1968-02-13 Pangborn Corp Centrifugal blasting apparatus
DE4410628C2 (de) * 1994-03-26 1996-09-19 Schlick Roto Jet Masch Schleuderrad mit fixierten Schleuderrad-Schaufeln
DE19752549C1 (de) * 1997-11-27 1999-04-08 Schlick Roto Jet Masch Schleuderradanordnung zur Oberflächenbehandlung von Gegenständen

Also Published As

Publication number Publication date
EP1360035A1 (fr) 2003-11-12
DE10104703C1 (de) 2001-12-06
DE50206805D1 (de) 2006-06-22
WO2002062529A1 (fr) 2002-08-15

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