EP0919334B1 - Procédé d'ajustage de la projection d'abrasif et roue centrifuge adaptée pour la mise en oeuvre dudit procédé - Google Patents

Procédé d'ajustage de la projection d'abrasif et roue centrifuge adaptée pour la mise en oeuvre dudit procédé Download PDF

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Publication number
EP0919334B1
EP0919334B1 EP98122333A EP98122333A EP0919334B1 EP 0919334 B1 EP0919334 B1 EP 0919334B1 EP 98122333 A EP98122333 A EP 98122333A EP 98122333 A EP98122333 A EP 98122333A EP 0919334 B1 EP0919334 B1 EP 0919334B1
Authority
EP
European Patent Office
Prior art keywords
guide sleeve
wear
centrifugal wheel
jet
sensor
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
EP98122333A
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German (de)
English (en)
Other versions
EP0919334A2 (fr
EP0919334A3 (fr
Inventor
Horst-Dieter Schlick
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.)
SCHLICK-Roto-Jet Maschinenbau GmbH
Original Assignee
SCHLICK-Roto-Jet Maschinenbau 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 SCHLICK-Roto-Jet Maschinenbau GmbH filed Critical SCHLICK-Roto-Jet Maschinenbau GmbH
Publication of EP0919334A2 publication Critical patent/EP0919334A2/fr
Publication of EP0919334A3 publication Critical patent/EP0919334A3/fr
Application granted granted Critical
Publication of EP0919334B1 publication Critical patent/EP0919334B1/fr
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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 method for beam image adjustment in centrifugal blasting systems, each with a centrifugal wheel with throwing blades arranged radially thereon Distributor wheel arranged coaxially to the centrifugal wheel and an equally coaxial to this beam guide sleeve have, in which the direction of the processing beam controlled by adjusting a window of the beam guide sleeve is, this in the area of a control edge of the Window, especially due to contact with blasting media, worn and to adjust according to the wear is.
  • the invention further relates to an implementation suitable centrifugal wheel arrangement.
  • a centrifugal blasting system is known from DE 44 10 628, where a window or slot-like guide sleeve opening rubbed off by the flowing and flying abrasive and is worn out. This wear will appear in the first Line observed in the direction of rotation. Position and size of the Guide sleeve openings determine the beam angle of the blasting medium, so that the wear, which leads to a removal of the Edge material leads, the control edge also shifts. The Cleaning performance deteriorates and the guide sleeve must be replaced. In addition, the spray pattern shifts in undesirable, which forces work to be interrupted.
  • shot peening devices can thus be continuously adjusted.
  • An adjustment of the Beam guide is relatively easy because the part does not rotate with the centrifugal wheel itself.
  • Beam guide sleeve can be adjusted so that the removal the control edge is compensated.
  • the signals can be transmitted through an external or internal sensor be delivered.
  • An external sensor can, for example a directed towards the control edge area, if necessary scanning laser beam. When the beam is removed the edge is not thrown back, there is a corresponding Signal.
  • the signals are preferred by means of a directly connected to the beam guide sleeve Sensor generated.
  • a centrifugal wheel arrangement suitable for carrying out the method, where the centrifugal wheel in the area of Window due to a certain abrasive content a control edge wears, is designed so that the Beam guide sleeve in the area of the control edge at least one Contains sensor, especially contact wire, built-in is connected to a signal converter.
  • sensor especially contact wire, built-in is connected to a signal converter.
  • Disconnecting a contact wire is one of adjusting the angle the beam guide sleeve can be triggered.
  • the beam guide sleeve is preferably designed such that several contact wires are inserted in the finest holes.
  • One containing this contact wire or the like End piece can preferably be interchangeable with the rest Guide sleeve to be connected.
  • centrifugal blasting system emerge, each with a centrifugal wheel with this radially arranged throwing blades 11.1, ... 1.n, a coaxial to this spinner arranged distribution wheel and one as well Has beam guide sleeve 1 arranged coaxially to this.
  • the centrifugal jet 15 passes along a control edge 5 the beam guide sleeve 1 on the front of the throwing blade 11 and is considerably accelerated by centrifugal force, so that subsequently the single particle of the abrasive strikes a surface 16 with high energy.
  • the control edge 5 of the beam guide sleeve 1 comes important role because of the position and size of the guide sleeve opening exactly determines the beam angle of the blasting medium. It is observed that the control edge is worn 5 is removed and finally another position, designated 5 'in Fig. 5, gets. The cleaning performance and the accuracy of the beam pattern deteriorate essential.
  • a signaling sensor 3 installed, here in Form of thin contact wires 8.1, ..., 8.n, in fine holes 7.1, ..., 7.n are inserted.
  • the contact wires are energized and each in a scanning circuit, for example Bridge circuit, installed. If the wear limit the control edge 5 to 5 ', the Fine holes of the first front reached and the contact wires exposed and severed after a short time.
  • the electronic control circuit transforms 20, which receives the signal, this into a step signal, which acts on a stepper motor 18 and the Beam guide sleeve for turning against the respective wear direction brings, so that finally the control edge 5 'comes to lie in the amount of the original control edge 5. This will make the progressive wear, at least to a certain extent, compensated without the beam guide sleeve 1 must be replaced prematurely.
  • the material of the beam guide sleeve is, for example, high-strength Sintered metal or a high strength alloy, if necessary also ceramic material. It is also possible the area of the edge designed with wire holes as Interchangeable part 25 to design, so that when worn material-saving replacement is possible here.
  • An alternative to those connected to the beam guide sleeve Sensors consists of a scanning laser beam from one on a fixed part of the centrifugal wheel system fixed laser source on the control edge and their progressive removal via optical converters watch (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Laser Beam Processing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (10)

  1. Procédé d'ajustage de la configuration du jet de grenaillage dans des installations de grenaillage à turbines, qui incluent respectivement une turbine de grenaillage (10) sur laquelle des ailettes de projection (11.1, ... 11.n) sont agencées radialement, une roue distributrice (12) agencée de manière coaxiale avec la turbine de grenaillage (10) et une buse de guidage (1) de jet agencée elle aussi de façon coaxiale avec elle, dans lequel la direction du jet de travail (15) est réglée par déplacement d'une fenêtre (2) de la buse de guidage (1) de jet, celle-ci s'usant dans la zone d'une arête de pilotage (5, 5') de la fenêtre et devant être ajustée en fonction de l'usure,
       caractérisé en ce que
    l'usure et la direction d'usure de la buse de guidage (1) de jet sont détectées et déterminées au moyen d'un capteur (3) émetteur de signaux,
    des signaux correspondants sont envoyés à un circuit de commande électronique (20),
    et la buse de guidage (1) de jet est tournée en continu au cours du fonctionnement de l'installation de grenaillage à turbine dans le sens contraire au sens respectif d'usure de sa fenêtre (2), de sorte que l'usure progressive est compensée.
  2. Procédé selon la revendication 1, caractérisé en ce que les signaux sont engendrés par voie électrique, électromagnétique ou optique, de préférence au moyen d'un capteur (8) attaché à la buse de guidage (1) de jet.
  3. Agencement de turbine de grenaillage destiné au traitement superficiel d'objets, qui inclut une turbine de grenaillage (10) sur laquelle plusieurs ailettes de projection (11.1, ..., 11.n) sont agencées radialement, une roue distributrice (12) agencée de façon coaxiale à la turbine de grenaillage et une buse ajustable (1) de guidage de jet, agencée elle aussi de façon coaxiale avec elle, au moyen de laquelle la direction du jet de travail (15) est réglée par déplacement d'une fenêtre (2) de la buse de guidage (1) de jet, caractérisé en ce que
    l'agencement comporte un capteur externe ou interne (3) pour déterminer l'usure et l'orientation de l'usure à la fenêtre (2) de la buse de guidage (1) de jet et le capteur (3) est connecté à un circuit de commande électronique (20), et en ce que
    un déplacement angulaire de la buse de guidage (1) de jet, par un actionneur, peut être déclenché lors d'une émission du capteur (3) à l'usure.
  4. Agencement de turbine de grenaillage selon la revendication 3, caractérisé en ce qu'au moins un élément capteur est incorporé dans la buse de guidage (1) de jet dans la zone d'une arête de pilotage (5, 5') de cette buse de guidage de jet.
  5. Agencement de turbine de grenaillage selon la revendication 4, caractérisé en ce qu'au moins un élément capteur est un fil de contact (8.1, ..., 8.n).
  6. Agencement de turbine de grenaillage selon la revendication 4, caractérisé en ce qu'au moins un élément capteur est une fibre de guide d'ondes.
  7. Agencement de turbine de grenaillage selon l'une quelconque des revendications 3 à 6, caractérisé en ce que plusieurs fils de contact (8.1, ..., 8.n) ou fibres de guides d'ondes sont installés dans des alésages très fins (7.1, ..., 7.n).
  8. Agencement de turbine de grenaillage selon l'une quelconque des revendications précédentes, caractérisé en ce que la buse de guidage (1) de jet peut tourner sous l'effet d'un servomoteur (18) ou d'un actionneur de déplacement.
  9. Agencement de turbine de grenaillage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément (25) de la buse de guidage (1) de jet qui contient les éléments capteurs peut être échangé séparément.
  10. Agencement de turbine de grenaillage selon l'une quelconque des revendications précédentes, caractérisé en ce que le capteur (3) est une unité de détection par faisceau laser.
EP98122333A 1997-11-27 1998-11-25 Procédé d'ajustage de la projection d'abrasif et roue centrifuge adaptée pour la mise en oeuvre dudit procédé Expired - Lifetime EP0919334B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19752549A DE19752549C1 (de) 1997-11-27 1997-11-27 Schleuderradanordnung zur Oberflächenbehandlung von Gegenständen
DE19752549 1997-11-27

Publications (3)

Publication Number Publication Date
EP0919334A2 EP0919334A2 (fr) 1999-06-02
EP0919334A3 EP0919334A3 (fr) 2000-10-25
EP0919334B1 true EP0919334B1 (fr) 2003-02-26

Family

ID=7849967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98122333A Expired - Lifetime EP0919334B1 (fr) 1997-11-27 1998-11-25 Procédé d'ajustage de la projection d'abrasif et roue centrifuge adaptée pour la mise en oeuvre dudit procédé

Country Status (2)

Country Link
EP (1) EP0919334B1 (fr)
DE (2) DE19752549C1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10104703C1 (de) * 2001-02-02 2001-12-06 Schlick Jennifer Schleuderradanordnung
DE10216819A1 (de) * 2002-04-16 2003-11-06 Roesler Oberflaechentechnik Gm Einstellhülse

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP3322378B2 (ja) * 1995-02-03 2002-09-09 新東工業株式会社 砥粒遠心投射装置
JPH091459A (ja) * 1995-06-16 1997-01-07 Sintokogio Ltd 鋼板のディスケ−リング方法およびその装置

Also Published As

Publication number Publication date
DE59807299D1 (de) 2003-04-03
EP0919334A2 (fr) 1999-06-02
EP0919334A3 (fr) 2000-10-25
DE19752549C1 (de) 1999-04-08

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