EP2929981B1 - Dispositif de retenue pour réception et support d'au moins un composant et procédé de trovalisation - Google Patents

Dispositif de retenue pour réception et support d'au moins un composant et procédé de trovalisation Download PDF

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Publication number
EP2929981B1
EP2929981B1 EP15160530.0A EP15160530A EP2929981B1 EP 2929981 B1 EP2929981 B1 EP 2929981B1 EP 15160530 A EP15160530 A EP 15160530A EP 2929981 B1 EP2929981 B1 EP 2929981B1
Authority
EP
European Patent Office
Prior art keywords
component
components
grinding
holding apparatus
shaft
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.)
Not-in-force
Application number
EP15160530.0A
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German (de)
English (en)
Other versions
EP2929981A1 (fr
Inventor
Dagobert Göpfert
Bernd Stimper
Michael Velten
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.)
MTU Aero Engines AG
Original Assignee
MTU Aero Engines AG
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Filing date
Publication date
Application filed by MTU Aero Engines AG filed Critical MTU Aero Engines AG
Publication of EP2929981A1 publication Critical patent/EP2929981A1/fr
Application granted granted Critical
Publication of EP2929981B1 publication Critical patent/EP2929981B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/003—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor whereby the workpieces are mounted on a holder and are immersed in the abrasive material

Definitions

  • the invention relates to a holding device for receiving and holding at least one component within a trough filled with abrasive bodies of a vibratory finishing device, by means of which respective surfaces of the at least one component are abradable under relative movement between the at least one component and the grinding wheels. Furthermore, the invention relates to a vibratory finishing method using a holding device for the components to be ground.
  • the so-called vibratory finishing process which is a subgroup of the finishing process, is known to be particularly suitable.
  • a container or trough of a vibratory finishing device is filled with loose grinding bodies and the components to be processed or abraded are placed in the trough filled with grinding bodies.
  • a so-called oscillating trough can be used, which can be set in vibration by a vibration motor of the vibratory finishing device.
  • From the DE 2 344 639 A1 is a device for holding workpieces within a vibrating trough filled with an abrasive pad, according to the vibratory finishing method working grinding or polishing machine known.
  • the known device has loose, insertable into the swing trough and permeable to the abrasive body receiving cages for at least one workpiece.
  • These receiving cages also each have two designed as a spoked wheel end parts and are therefore complex and manufactured with relatively high material usage.
  • a holding device for receiving and holding at least one component with an axis for releasably receiving and holding at least one component is described, in which the axis can be guided through at least one opening in the component.
  • a holding device is known, which has at least one attachable to the axle spacer element by means of which the components and the receptacle can be arranged to a further mounted on the axle component in a predetermined axial distance.
  • a holding device which has at least two radial spacers, wherein the radial spacers are arranged on the axis.
  • An exemplary holding device for holding and holding at least one component within a trough filled with abrasive bodies or working space of a vibratory finishing device, by means of which respective surfaces of the at least one component are abradable under relative movement between the at least one component and the grinding wheels, comprises at least one axis for releasable Receiving and holding the at least one component, wherein the axis is formed such that it can be guided through at least one opening in the component and / or through at least one opening of a component receptacle receiving at least one component.
  • Such an axis is particularly easy to manufacture and low material usage.
  • the surfaces of the component or components by means of the holding device according to the invention are particularly accessible to the grinding body.
  • a particularly uniform velocity distribution of the relative velocity between the grinding bodies and the surfaces of the component to be abraded is ensured, wherein the grinding process also takes place over an extended area of the surfaces to be abraded can.
  • the component receptacle is designed such that a plurality of components can be arranged rotationally symmetrically on the component receptacle.
  • the component receptacle may be disc-shaped or annular. This advantageously results in a uniform wear on the component surfaces of the components mounted on the component holder.
  • the latter has at least one spacer element which can be applied to the axle, by means of which the at least one component receptacle can be arranged at least one further component receptacle at a predetermined axial distance.
  • the spacer element can also be dimensioned differently with respect to its axial extension, so that the axial distance between the components can be exactly predetermined.
  • the relative speed between the grinding bodies and the respective mutually facing surfaces of adjacent components, which are spaced apart from each other by the spacer can be adjusted directly by the size of the distance, ie the gap between the components is specified by means of the spacer. Therefore, on the one hand, it is possible to use a spacer which is short in axial engagement, and accordingly to provide a relatively narrow gap between the opposing component surfaces, thereby increasing the number of components and / or component supports which can be supported by the axis and thus increasing the system utilization can.
  • a particularly large distance between the components and / or component receptacles can be created by means of a correspondingly dimensioned spacer, whereby a total of fewer components can be accommodated on the axis, however, a particularly homogeneous and high grinding quality is also achieved on facing component surfaces .
  • sleeves with a particularly thin wall thickness can be provided as spacer elements, which have a particularly small contact surface with the respective components to be spaced apart.
  • the component holder already has an integrated spacer element, which may be formed in particular in the region around the opening for insertion of the axle.
  • a holding device comprises this at least one adapter, by means of which at least one size difference and / or a difference in the geometric configuration between the axis and the opening of the component and / or the opening of the component receiving, by which the axis is guided compensated is.
  • the adapter may, for example, have a cone on which the component or the component receptacle are at least partially pushed and can be held without play on the axis accordingly.
  • the above-described spacer element and the adapter can be designed as separate components or in one piece.
  • a further exemplary embodiment of a holding device has at least two radial spacers, wherein the radial spacers are arranged on the axis such that the at least one component and / or the component receptacle is mounted between the radial spacers.
  • the radial spacers in this case have an extent and / or a diameter (D R ), which is greater than the maximum extent and / or the maximum diameter (D B ) of the components mounted directly on the axle or the at least one disposed on the component receiving component.
  • D R the maximum extent and / or the maximum diameter
  • the radial spacers come to several advantageous functions. The fact that the components are arranged between the radial spacers, a contacting of the components in the axial direction of the axis is prevented with the container inner walls of the trough.
  • this has at least two clamping or fixing elements, by means of which the at least one component holder and / or the at least one spacer element can be fixed on the axle.
  • the clamping or fixing elements which may be formed, for example, as nuts which can be screwed onto the axis, the component receptacles can be secured in a particularly effective manner against an axial displacement or against an undesired release from the axis.
  • the clamping or fixing elements can also be designed, for example, as securing rings or other clamping means suitable for holding the component receptacles.
  • the axis for receiving and holding the component receptacles at least partially has an external thread. On this external thread then component holders can be screwed with a corresponding internal thread having openings and thus secured.
  • the axis has a constant or changing axle diameter. This makes it possible to easily adapt the diameter of the axle to one or more identical or different diameters of the openings of the components and / or component holders, through which the axle is guided, and without additional intermediate elements.
  • the holding device according to the invention is particularly suitable for receiving and holding at least one component of an aircraft engine.
  • Components of an aircraft engine are usually particularly heavily stressed, which is why an exact production or a particularly uniform and high grinding quality is of particular importance.
  • the holding device is suitable for receiving such components, since a particularly high grinding and surface quality can be ensured at the component surfaces coming into contact with the grinding bodies. This contributes in particular to uniform processing, i. a uniform removal of the surfaces to be machined of the component. Possible imbalances resulting from uneven removal are reliably avoided.
  • blades of a turbine of an aircraft engine may be mentioned here.
  • the component holder is advantageously formed disc or annular.
  • the invention further comprises a vibratory finishing method which comprises at least the following steps using a holding device described above: applying and releasably securing at least one component receiving at least one component on at least one axis of the holding device, wherein the axis is formed so that they by at least an opening in the component receptacle is feasible; Introducing the holding device into a trough or working space of a vibratory grinding machine which is filled or to be filled with grinding bodies and which is designed to grind respective surfaces of the at least one component under relative movement between the at least one component and the grinding bodies; Moving the trough and the grinding wheels therein to move the grinding operation; and stopping the machining operation and removing the holding device.
  • the vibratory grinding method By means of the vibratory grinding method according to the invention, using the holding device results in a particularly simple plant assembly, low-manpower production and minimal throughput times, with universal applicability of the holding device or the vibratory finishing process for a variety of component forms is given. In addition, several components can be edited at the same time. Furthermore, before the removal of the holding device, the movement or flow direction of the grinding bodies in the trough can be reversed. As a result, the holding device "floats" with the at least one component and / or component holder on the grinding bodies and can thus be easily removed from the trough.
  • FIG. 1 shows a schematic sectional view of a vibratory finishing device 10 with a filled with grinding wheels 16 trough 12.
  • the trough 12 is vibrated by means of a vibrator device, not shown, the vibratory finishing device 10 in vibration.
  • the abrasive body 16 known elements may be used, which consist in particular of steel, corundum or other suitable materials. Typical dimensions of the grinding wheels 16 are in the millimeter range.
  • the abrasive body 16 may be formed spherical, pyramidal or tetrahedral. However, other shapes and sizes are conceivable. Due to the vibrations of the trough 12, the grinding wheels 16 are also set in motion, in particular a flow movement.
  • a holding device 18 is inserted into the trough 12 or into the bulk material of the grinding wheels 16.
  • the holding device 18 has an axis 20, in which in the not inventive embodiment, three components 22, 26, 34 are mounted.
  • the components 22, 26, 34 are pushed over a respective opening 24 on the axis 20.
  • two spacer elements 30 are arranged, which space the components 22, 26, 34 from each other axially.
  • the axial distance a between the components 22 and 26 is shown.
  • the components 22, 26, 34 shown in the exemplary embodiment are so-called blisks which have a rotationally symmetrical region 28.
  • the openings 24 of the components 22, 26, 36 are formed in the rotationally symmetrical region 28, wherein the central axes of the openings 24 are arranged coaxially to a longitudinal axis of the axis 20.
  • the holding device 18 further comprises two radial spacers 36, which are arranged at the respective ends of the axis 20. Between the Radialabstandshaltem 36, the components 22, 26, 34 and the corresponding spacer elements 30 are mounted. It can be seen that the two radial spacers 36 have a diameter D R , which is greater than a maximum diameter D B of the components 22, 26, 34.
  • the arrangement of the two radial spacers 36 and the intermediate components 22, 26, 34 with the spacer elements 30 is fixed by two clamping or fixing elements 32 on the axis 20.
  • the clamping elements 32 can be, for example, nuts which can be screwed onto the corresponding ends of the axle 20. If appropriate, the clamping elements 32 can also be integrated in the radial spacers 36.
  • the diameter D R of the radial spacers 36 is greater than the maximum diameter D B of the components located between the radial spacers 36 is reliably prevented that the components to be machined 22, 26, 34 abut the inner sides 14 of the trough 12 and possibly damaged , A mutual contacting of the components 22, 26, 34 is in turn prevented by the spacer elements 30 arranged between the components 22, 26, 34.
  • the radial spacers 36 are shown and formed disc-shaped. Of course, there is also the possibility that they are, for example, annular or also have a different geometric shape. It is crucial that the extent and / or the diameter of the radial spacers 36 at each point is always greater than the maximum diameter and / or the maximum extent of the fixed in the holding device 18 component 22, 26, 34th
  • the axle 20 has a constant axle diameter in the illustrated embodiment. But it is also possible that this axle diameter varies and is adapted to different diameters of the openings 24 of the components to be machined. Such size differences in the diameters of the openings 24 could also be compensated by corresponding adapters (not shown).
  • FIG. 2 shows a schematic representation of an exemplary holding device 18 'according to the invention according to a further embodiment.
  • the holding device 18 'in this case comprises an axis 20 for releasably receiving and holding a component receptacle 38.
  • the axis 20 in this case has an external thread 46, onto which the component receptacle 38 with a corresponding internal thread (not shown) of an opening formed in the component receptacle 38 opening 40 screwed and attachable.
  • the opening 40 is formed centered within the component receptacle 38.
  • At least one clamping or fixing element 32 which can also be screwed onto the axis 20, is additionally provided, which is designed as a screw nut in the example shown.
  • the component holder 38 may be made of plastic, ceramic, wood, metal and / or a metal alloy.
  • the component receptacle 38 is disc-shaped.
  • fastening devices 44 for releasably securing the components 42 are arranged on the radially outer edges of the component holder 38 .
  • the fastening devices 44 can be designed as screw, clamp or plug connections. Other types of attachment are conceivable.
  • the components 42 in the illustrated embodiment are blades of a turbine of an aircraft engine.
  • the fastening devices 44 are arranged at an equal angular distance from each other, so that overall results in an approximately rotationally symmetrical structure of the component holder 38 with the components 42 and an approximately rotationally symmetrical arrangement of the components 42.
  • any number of identical or different fastening devices may be formed on the component receptacle 38 as far as the size of the respective component receptacle 38 permits.
  • a particularly efficient vibratory finishing process is provided in which the illustrated components 42 on the axis 20 of the holding device 18'indirekt mounted on the component holder 38 and inserted together with the holding device 18 'in the filled with grinding wheels 16 trough 12 of the vibratory finishing device 10. Due to the relative movement between the grinding wheels 16 and the components 42 and their component surfaces, the latter are ground and / or polished and / or deburred.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (8)

  1. Dispositif de support (18') destiné à recevoir et supporter simultanément, à peu près à symétrie de rotation, une pluralité de composants (42) à l'intérieur d'une cuve (12), remplie d'éléments de polissage (16), d'un dispositif de polissage (10) au moyen duquel des surfaces respectives des composants (42) peuvent être polies par un mouvement relatif entre les composants (42) et les éléments de polissage (16), les composants (42) étant des éléments constitutifs d'une turbine d'avion, le dispositif de support (18) comportant au moins un axe (20), l'axe (20) étant conçu de manière à être guidé à travers des ouvertures (40) d'un logement (38) recevant un composant (42),
    caractérisé en ce que
    - le logement de composant (38) a une forme de disque ou d'anneau, et
    - des dispositifs de fixation (44) destinés à fixer de manière libérable les composants (42) étant disposés sur les bords radialement extérieurs du logement de composant (38).
  2. Dispositif de support (18') selon la revendication 1, caractérisé en ce que les dispositifs de fixation (44) sont disposés angulairement à équidistance les uns des autres.
  3. Dispositif de support (18') selon la revendication 1 ou 2, caractérisé en ce que le dispositif de support (18') comporte au moins un élément d'écartement (30) qui peut être placé sur l'axe (20) et au moyen duquel l'au moins un logement (38) peut être disposé à une distance axiale (a) prédéterminée de l'au moins un autre logement de composant.
  4. Dispositif de support (18') selon l'une des revendications précédentes, caractérisé en ce que le dispositif de support (18') comporte au moins deux éléments de serrage ou de fixation (32) au moyen desquels le logement de composant (38) et/ou l'au moins un élément d'écartement (30) peuvent être fixés sur l'axe (20).
  5. Dispositif de support (18') selon l'une des revendications précédentes, caractérisé en ce que l'axe (20) comporte au moins partiellement un filetage extérieur (46).
  6. Dispositif de support (18') selon l'une des revendications précédentes, caractérisé en ce que l'axe (20) a un diamètre constant ou variable.
  7. Procédé de polissage, caractérisé en ce que, lors de l'utilisation d'un dispositif de support (18) selon l'une des revendications 1 à 6, le procédé comprend au moins les étapes suivantes :
    - le placement et la fixation, de manière amovible, d'au moins un logement de composant (38), recevant un composant, sur au moins un axe (32) du dispositif de support (18'), l'axe (20) étant conçu de manière à être guidé à travers au moins une ouverture (40) ménagée dans le logement de composant (38) ;
    - l'introduction du dispositif de support (18') dans une cuve (12), remplie ou à remplir avec des éléments de polissage (16), d'un dispositif de polissage (10) qui est conçu pour polir des surfaces respectives des composants (42) par un mouvement relatif entre les composants (42) et les éléments de polissage (16) ;
    - le déplacement de la cuve (12), et des éléments de polissage (16) se trouvant à l'intérieur, pour effectuer le processus de polissage ; et
    - l'arrêt du processus de traitement et le retrait du dispositif de support (18').
  8. Procédé selon la revendication 7, caractérisé en ce que, avant le retrait du dispositif de support (18') avec les composants (42), le sens de déplacement ou d'écoulement des éléments de polissage (16) dans la cuve (12) est inversé.
EP15160530.0A 2014-03-31 2015-03-24 Dispositif de retenue pour réception et support d'au moins un composant et procédé de trovalisation Not-in-force EP2929981B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014205940.2A DE102014205940A1 (de) 2014-03-31 2014-03-31 Haltevorrichtung zur Aufnahme und Halterung von mindestens einem Bauteil und Gleitschleifverfahren

Publications (2)

Publication Number Publication Date
EP2929981A1 EP2929981A1 (fr) 2015-10-14
EP2929981B1 true EP2929981B1 (fr) 2018-05-09

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EP15160530.0A Not-in-force EP2929981B1 (fr) 2014-03-31 2015-03-24 Dispositif de retenue pour réception et support d'au moins un composant et procédé de trovalisation

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EP (1) EP2929981B1 (fr)
DE (1) DE102014205940A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3501733B1 (fr) * 2017-12-22 2020-02-26 Haug Intelligente Poliersysteme GmbH Dispositif de finition vibratoire d'une roue de véhicule et procédé de fixation d'une roue de véhicule dedans
CN114505781B (zh) * 2022-04-20 2022-06-21 徐州宇飞电力科技有限公司 一种电热管制造滚光处理设备
CN115157014A (zh) * 2022-06-29 2022-10-11 山东金帝精密机械科技股份有限公司 一种轴承保持架的网筒研磨方法及装置

Citations (3)

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Publication number Priority date Publication date Assignee Title
US1512350A (en) * 1922-07-24 1924-10-21 William M Mccorkle Disk scouring and polishing apparatus
DE102009021824A1 (de) * 2009-05-18 2010-11-25 Rolls-Royce Deutschland Ltd & Co Kg Verfahren zum Kantenentgraten und -verrunden
US20130323071A1 (en) * 2012-06-01 2013-12-05 Pratt & Whitney Services Pte Ltd. Polishing assembly and method for polishing

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Publication number Priority date Publication date Assignee Title
DE2344639A1 (de) 1973-09-05 1975-03-13 Dillenberg Bergische Metall Verfahren und vorrichtung zum entgraten, schleifen und/oder polieren kleiner werkstuecke aus metallguss
SU1454662A1 (ru) * 1986-10-17 1989-01-30 Научно-Производственное Объединение По Оборудованию Для Химических Волокон Способ вибрационной обработки деталей
EP0734812B1 (fr) * 1995-03-31 2000-06-14 ROTO FRANK Aktiengesellschaft Dispositif de finissage par traínage et procédé de finissage par traínage
DE10204267C1 (de) * 2002-02-02 2003-04-24 Otec Praezisionsfinish Gmbh Werkstückhalter für Schleppfinishmaschinen
US6866563B2 (en) * 2002-06-27 2005-03-15 Bausch & Lomb Incorporated Apparatus and method for target polishing intraocular lenses
US6962522B1 (en) * 2004-05-12 2005-11-08 Bbf Yamate Corporation Barrel polishing device
DE102005047303A1 (de) * 2005-09-30 2007-04-12 Walther Trowal Gmbh & Co. Kg Vorrichtung und Verfahren zum Schleifen oder Polieren von fein strukturierten Werkstücken
EP2364812A1 (fr) * 2010-03-08 2011-09-14 REM Technologies, Inc. Dispositif magnétique
DE102011103606A1 (de) * 2011-06-08 2012-12-13 Rolls-Royce Deutschland Ltd & Co Kg Bearbeitungsvorrichtung für eine Oberflächenbearbeitung eines Werkstücks durch Tauchschleifen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1512350A (en) * 1922-07-24 1924-10-21 William M Mccorkle Disk scouring and polishing apparatus
DE102009021824A1 (de) * 2009-05-18 2010-11-25 Rolls-Royce Deutschland Ltd & Co Kg Verfahren zum Kantenentgraten und -verrunden
US20130323071A1 (en) * 2012-06-01 2013-12-05 Pratt & Whitney Services Pte Ltd. Polishing assembly and method for polishing

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Publication number Publication date
DE102014205940A1 (de) 2015-10-01
EP2929981A1 (fr) 2015-10-14

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