EP3000558B1 - Tool for processing materials - Google Patents

Tool for processing materials Download PDF

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Publication number
EP3000558B1
EP3000558B1 EP15187427.8A EP15187427A EP3000558B1 EP 3000558 B1 EP3000558 B1 EP 3000558B1 EP 15187427 A EP15187427 A EP 15187427A EP 3000558 B1 EP3000558 B1 EP 3000558B1
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EP
European Patent Office
Prior art keywords
tool
carrier body
materials
apertures
covering element
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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
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EP15187427.8A
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German (de)
French (fr)
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EP3000558A3 (en
EP3000558A2 (en
Inventor
Michael Schulze
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Dr Mueller Diamantmetall AG
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Dr Mueller Diamantmetall AG
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Priority to PL15187427T priority Critical patent/PL3000558T3/en
Publication of EP3000558A2 publication Critical patent/EP3000558A2/en
Publication of EP3000558A3 publication Critical patent/EP3000558A3/en
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Publication of EP3000558B1 publication Critical patent/EP3000558B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/007—Weight compensation; Temperature compensation; Vibration damping

Definitions

  • the invention relates to a tool for processing materials.
  • the invention relates to a tool for processing materials, preferably a grinding wheel, with a carrier body with bushings, wherein the tool has a hub for receiving a drive shaft, and in which the bushings are at least partially closed by suitable materials.
  • the US 4,004,378 shows a grinding wheel whose rotationally symmetrical support body is provided on its peripheral surface with an abrasive coating.
  • the carrier body also has feedthroughs for achieving a substantially parallel to the axis of rotation of the carrier body extending air flow.
  • the disclosed there devices are characterized by a particularly low weight, which has an advantageous effect on the development of vibration and the handling when handling these abrasive tools
  • the inventive design of the bushings of the carrier body leads to a predetermined radial elasticity of the grinding tool, which a further damping of vibrations in grinding operation leads and thus to very good processing results.
  • the present invention is therefore based on the object to provide a tool for processing materials of the type mentioned above, which overcomes the disadvantages of the prior art and in particular without sacrificing the processing result leads to a reduced noise in the grinding operation.
  • the tool for machining materials in particular a grinding wheel, with respect to a rotation axis substantially cylindrically symmetrical outer geometry, with an inner hub or axle through whose center the axis of rotation extends centrally, a concentric to this, outer shell body whose peripheral surface with an abrasive coating is provided, and a carrier body arranged between the hub and the jacket body, which is preferably integral with the hub and / or the jacket body.
  • the carrier body is configured with at least two feedthroughs, which preferably extend from the inner region of the carrier body, ie from the edge region of the carrier body lying at the hub, in the direction of the outer edge of the carrier body, ie towards the jacket body, wherein, preferably in each sectional plane of the carrier body, the ratio A D / A T is greater than 1, preferably greater than 2, preferably greater than 3 and preferably greater than 4, from the sum of the areas A D forming the lead body material and the area A T forming the carrier body material.
  • the areas forming the leadthroughs A D are therefore greater in total than the surface of the material forming the support body A T , and preferably significantly larger.
  • At least some of the bushings and preferably all bushings are filled with a filling material, preferably a foamed filling material, so that there is a closure of the bushings with a substantially constant low weight of the tool and equally constant radial elasticity of the tool.
  • a filling material preferably a foamed filling material
  • preferred filling materials are selected from a group comprising foamed plastics and metals, in particular polyurethane foams, PVC foams or polystyrene foams, foamed aluminum and the like of similar materials.
  • a cover is arranged on at least one side of the tool so on at least one of the two cylinder cover surfaces.
  • the cover member is preferably made of a material selected from the group consisting of plastics, light metals, glass fiber or carbon fiber composite materials, fabrics and especially coated fabrics, films, fabric-reinforced composites, combinations of the above materials and the like of similar materials.
  • the cover When using a cover, it may be advantageous to the cover substantially over the entire surface of the support body and also of the filler cohesively with this to connect as well as in the area over the with the filler filled bushings of the support body to create a sufficiently viable coverage of the bushings or the filling material.
  • a permanently elastic connecting material with a relatively high modulus of elasticity is preferably used, such as, for example, adhesives based on resin, plastic or silicone.
  • the solution according to the invention ensures that the tool does not lose its radial elasticity, so that the advantageous grinding properties achieved with the generic tools are maintained.
  • the carrier body may be made of a variety of materials, such as steel, aluminum, copper, bronze or the like, since the vibration is not carried out by the material properties themselves, but by the geometric configuration of the bushings of the carrier body.
  • both a significant weight reduction can be achieved as a targeted vibration damping, especially in metallic support bodies, which have almost no radial elasticity in support bodies of solid material or support bodies with bushings of small geometric dimensions.
  • the thickness of the carrier body (in the direction of the axis of rotation) is smaller than that of the jacket body and / or the hub, so that the carrier body rebounds with respect to the jacket body or the cylindrical top surfaces defined by the latter and in this recess the cover is received.
  • the bushings are executed in the base in the form of squares, wherein the long sides are preferably connected radially extending with the short sides and wherein the short sides are arranged on the inner or outer region of the carrier body.
  • a straight course of the long sides of the bushings is preferred but not required.
  • a rounded design of the inner corners of the squares is preferred so that sharp-edged inner corners are present at the bushings.
  • At least one of the short sides in the plan view can be at least partially circular-segment-shaped, for example concentric with the outer circumference of the lateral surface.
  • the two long sides of the respective bushing are designed to be of equal length, so that the bushings of the carrier body in this embodiment appear substantially annular segment-shaped.
  • the quadrangular passages are distorted or bent about a point located outside the respective feedthrough so that the long sides of the feedthroughs are substantially arcuate or preferably circular segmented in plan view.
  • the spokes emerging from the material of this embodiment remaining between adjacent feedthroughs are thus arcuately curved and preferably circularly curved and extend in the inner region of the carrier body, ie substantially initially radially outwardly from the hub or axle receptacle, and then by their curvature to experience a kind of asymptotic approach towards the scope of the tool.
  • the degree or extent of the approach of the spokes to the circumference of the tool is different selectable and, as it were, an essential parameter for the radial elasticity of the tool.
  • the long sides of adjacent bushings extend substantially parallel, this equally applies to substantially radially extending long sides of the bushings as well as for curved or even circular segment running. Nevertheless, for example, those embodiments are preferred within the scope of the invention, in which a tapering of the spokes is carried out towards the outer region of the carrier body by a non-parallel course of the long sides of passages, whereby further influencing the radial elasticity and the weight of the tools according to the invention this Embodiment can be achieved.
  • the bushings of the carrier body from its opposite cylindrical top surfaces ago essentially incorporated to the middle in the material of the carrier body, for example by milling. It is particularly advantageous, the bushings, which are incorporated from the second side, so for example, the upper cylinder top surface of the carrier body ago by a predetermined rotation angle ⁇ about the axis of rotation rotates with respect to those of the first side of the carrier body, so for example the lower cylinder top surface will be incorporated to rotate. As a result, the spokes between adjacent feedthroughs of one side of the carrier body are thus substantially not congruent with the spokes between adjacent feedthroughs of the other side of the carrier body.
  • the abrasive coating is applied by gluing or sintering or similar known methods on the outer peripheral surface of the sheath body and preferably selected from a group of diamond needles such as PCD, MKD, CVD, CBN needles, metal, plastic or ceramic bonded Diamonds, metal or plastic bonded boron nitride, in particular cubic boron nitride.
  • a group of diamond needles such as PCD, MKD, CVD, CBN needles, metal, plastic or ceramic bonded Diamonds, metal or plastic bonded boron nitride, in particular cubic boron nitride.
  • the Fig. 1 shows a generic tool with a support body 1, a shell body 4 with an abrasive coating B and a hub or receptacle 5.
  • the support body has a plurality of bushings 2 and lying between the passages 2 spokes 3, which in this case circular segment-shaped from the inner region of the support body to extend its outer region and approach in the direction of extension of the course of the shell body.
  • Fig. 2 and 3 show schematic sectional views of grinding wheels according to the present invention, wherein for ease of explanation, the tools according to the invention along a section line that the section line XX of Fig. 1 corresponds, cut are.
  • like reference numerals designate corresponding elements or elements with corresponding functions.
  • Fig. 2 shows an embodiment of the invention in which the bushings 2 are filled with a filling material 20, preferably a foamed plastic such as Pulyurethan- or PVC foam.
  • the filler material preferably terminates flush with the cylinder cover surfaces of the carrier body, so that they are substantially planar.
  • the cylindrical top surfaces of the carrier body are provided with cover elements 10, wherein these are substantially flat connected to the carrier body and in particular its spokes 3 and optionally also the surfaces of the filling material 20 cohesively.
  • the cover elements 10 are made of a thin but tear-resistant fabric, so that a durable, yet very light surface is formed by the cover 10 by the full-surface cohesive connection of the fabric with the surface of the carrier body and optionally also the filling material. In particular, this is the case when the tissue is impregnated by the material used for the cohesive connection.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Description

Die Erfindung betrifft ein Werkzeug zum Bearbeiten von Materialien. Insbesondere betrifft die Erfindung ein Werkzeug zum Bearbeiten von Materialien, vorzugsweise eine Schleifscheibe, mit einem Trägerkörper mit Durchführungen, wobei das Werkzeug eine Nabe zur Aufnahme einer Antriebswelle aufweist, und bei welchem die Durchführungen durch geeignete Materialien zumindest teilweise verschlossen sind.The invention relates to a tool for processing materials. In particular, the invention relates to a tool for processing materials, preferably a grinding wheel, with a carrier body with bushings, wherein the tool has a hub for receiving a drive shaft, and in which the bushings are at least partially closed by suitable materials.

Werkzeuge zum Bearbeiten von Materialien mit einem Trägerkörper mit Durchführungen sind im Stand der Technik bekannt. Die US 4,004,378 zeigt eine Schleifscheibe, deren rotationssymmetrischer Trägerkörper an seiner Umfangsfläche mit einem Schleifbelag versehen ist. Der Trägerkörper weist zudem Durchführungen zur Erzielung eines im wesentlichen parallel zur Rotationsachse des Trägerkörpers verlaufenden Luftstroms auf. Darüber hinaus zeigt die EP 2 641696 der hiesigen Anmelderin ein Werkzeug zum Bearbeiten von Oberflächen, welches aufgrund der konkreten Ausgestaltung des Trägerkörpers, und insbesondere der hierin angeordneten Durchführungen, besonders vorteilhaft hinsichtlich seiner Schleifeigenschaften ist.Tools for processing materials with a carrier body with feedthroughs are known in the art. The US 4,004,378 shows a grinding wheel whose rotationally symmetrical support body is provided on its peripheral surface with an abrasive coating. The carrier body also has feedthroughs for achieving a substantially parallel to the axis of rotation of the carrier body extending air flow. In addition, the shows EP 2 641696 the present applicant, a tool for processing surfaces, which is particularly advantageous in terms of its grinding properties due to the specific design of the carrier body, and in particular the arranged therein feedthroughs.

Einerseits zeichnen sich die dort offenbarten Vorrichtungen durch ein besonders geringes Gewicht aus, was sich vorteilhaft auf die Entwicklung von Vibrationen auswirkt sowie die Handlichkeit beim Umgang mit diesen Schleifwerkzeugen, andererseits führt die erfindungsgemäße Ausgestaltung der Durchführungen des Trägerkörpers zu einer vorgegebenen radialelastizität des Schleifwerkzeugs, was zu einer weiteren Dämpfung von Vibrationen im Schleifbetrieb führt und damit zu besonders guten Bearbeitungsergebnissen.On the one hand, the disclosed there devices are characterized by a particularly low weight, which has an advantageous effect on the development of vibration and the handling when handling these abrasive tools, on the other hand, the inventive design of the bushings of the carrier body leads to a predetermined radial elasticity of the grinding tool, which a further damping of vibrations in grinding operation leads and thus to very good processing results.

Es hat sich nun gezeigt, dass im Schleifbetrieb dieses Schleifwerkzeugs unter bestimmten Produktionsbedingungen, bei denen ein besonders hoher Kühlmittelbedarf besteht, also beispielsweise bei hohen Rotations- und/oderVorschubgeschwindigkeiten, eine unerwünschte Geräuschentwicklung stattfindet. Zwar wird hierdurch das Schleifergebnis nicht beeinträchtigt, jedoch stellt der erhöhte Geräuschpegel eine Belastung für das Bedienpersonal an der Bearbeitungsmaschine dar, die es im Interesse der Arbeitssicherheit und zur Vorbeugung von Krankheiten zu vermeiden gilt.It has now been found that in grinding operation of this grinding tool under certain production conditions, in which there is a particularly high coolant requirement, that is, for example, at high rotational and / or Vorschubgeschwindigkeiten, an undesirable noise takes place. Although this does not cause the sanding result impaired, however, the increased noise level is a burden for the operator on the processing machine, which is to be avoided in the interest of safety at work and to prevent disease.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Werkzeug zum Bearbeiten von Materialien der eingangs genannten Art zur Verfügung zu stellen, welches die Nachteile des Standes der Technik überwindet und das insbesondere ohne Einbußen des Bearbeitungsergebnisses zu einer verringerten Geräuschentwicklung im Schleifbetrieb führt.The present invention is therefore based on the object to provide a tool for processing materials of the type mentioned above, which overcomes the disadvantages of the prior art and in particular without sacrificing the processing result leads to a reduced noise in the grinding operation.

Erfindungsgemäß wird die voranstehende Aufgabe durch ein Werkzeug zum Bearbeiten von Materialien mit den Merkmalen des Patentanspruchs 1 gelöst. Bevorzugte Ausführungsformen sind Gegenstand der Unteransprüche.According to the invention, the above object is achieved by a tool for processing materials having the features of patent claim 1. Preferred embodiments are subject of the dependent claims.

Danach weist das Werkzeug zum Bearbeiten von Materialien, insbesondere eine Schleifscheibe, eine bezüglich einer Rotationsachse im wesentlichen zylindersymmetrische Außengeometrie auf, mit einer innenliegenden Nabe oder Achsaufnahme durch deren Zentrum sich die Rotationsachse zentrisch erstreckt, einem hierzu konzentrischen, außenliegenden Mantelkörper, dessen Umfangsfläche mit einem Schleifbelag versehen ist, und einem zwischen der Nabe und dem Mantelkörper angeordneten Trägerkörper, welcher bevorzugt einstückig mit der Nabe und/oder dem Mantelkörper ist.Thereafter, the tool for machining materials, in particular a grinding wheel, with respect to a rotation axis substantially cylindrically symmetrical outer geometry, with an inner hub or axle through whose center the axis of rotation extends centrally, a concentric to this, outer shell body whose peripheral surface with an abrasive coating is provided, and a carrier body arranged between the hub and the jacket body, which is preferably integral with the hub and / or the jacket body.

Der Trägerkörper ist mit wenigstens zwei Durchführungen ausgestaltet, welche sich bevorzugt vom Innenbereich des Trägerkörpers, also von dem bei der Nabe liegenden Randbereich des Trägerkörpers, in Richtung der Außenkante des Trägerkörpers erstrecken, also hin zum Mantelkörper, wobei, vorzugsweise in jeder Schnittebene des Trägerkörpers, das Verhältnis AD/AT aus der Summe der die Durchführungen bildenden Flächen AD und der das Trägerkörpermaterial bildenden Fläche AT größer als 1 ist, bevorzugt größer als 2, bevorzugt größer als 3 und bevorzugt größer als 4. Die die Durchführungen bildenden Flächen AD sind also in ihrer Summe größer als die das Material des Trägerkörpers bildende Fläche AT ist, und bevorzugt deutlich größer.The carrier body is configured with at least two feedthroughs, which preferably extend from the inner region of the carrier body, ie from the edge region of the carrier body lying at the hub, in the direction of the outer edge of the carrier body, ie towards the jacket body, wherein, preferably in each sectional plane of the carrier body, the ratio A D / A T is greater than 1, preferably greater than 2, preferably greater than 3 and preferably greater than 4, from the sum of the areas A D forming the lead body material and the area A T forming the carrier body material. The areas forming the leadthroughs A D are therefore greater in total than the surface of the material forming the support body A T , and preferably significantly larger.

Gemäß einem ersten Aspekt der Erfindung sind zumindest einige der Durchführungen und vorzugsweise sämtliche Durchführungen mit einem Füllmaterial ausgefüllt, vorzugsweise einem geschäumten Füllmaterial, so dass bei im wesentlichen gleichbleibend geringem Gewicht des Werkzeugs und ebenso gleichbleibender Radialelastizität des Werkzeugs ein Verschluss der Durchführungen vorliegt.According to a first aspect of the invention, at least some of the bushings and preferably all bushings are filled with a filling material, preferably a foamed filling material, so that there is a closure of the bushings with a substantially constant low weight of the tool and equally constant radial elasticity of the tool.

In erfindungsgemäßer Weise ist erkannt worden, dass durch den Verschluss der Durchführungen der gattungsgemäßen Werkzeuge auch bei hohen Drehzahlen und Vorschubgeschwindigkeiten, und insbesondere auch bei damit zumeist verbundenem hohem Kühlmittelbedarf eine deutliche Reduzierung der Geräuschentwicklung während der Bearbeitung mittels des erfindungsgemäßen Werkzeugs erzielt werden kann und damit bei gleichbleibenden Vorteilen des gattungsgemäßen Werkzeugs eine deutliche Vergrößerung des Anwendungsfelds erzielt wird.In accordance with the invention it has been recognized that by closing the bushings of the generic tools even at high speeds and feed speeds, and in particular with it usually associated high coolant demand a significant reduction of noise during machining by means of the tool according to the invention can be achieved and thus at Consistent advantages of the generic tool a significant increase in the field of application is achieved.

Bevorzugte Füllmaterialien sind je nach Anwendungsfall ausgewählt aus einer Gruppe, die geschäumte Kunststoffe und Metalle enthält, insbesondere Polyurethanschäume, PVC-Schäume oder Polystyrolschäume, geschäumtes Aluminium und dergleichen ähnliche Werkstoffe.Depending on the application, preferred filling materials are selected from a group comprising foamed plastics and metals, in particular polyurethane foams, PVC foams or polystyrene foams, foamed aluminum and the like of similar materials.

Bei einer Ausführungsform der Erfindung ist vorgesehen, dass auf wenigstens einer Seite des Werkzeugs also an zumindest einer der beiden Zylinderdeckflächen ein Abdeckelement angeordnet ist. Das Abdeckelement ist bevorzugt aus einem Material gefertigt, welches aus einer Gruppe ausgewählt ist, die Kunststoffe, Leichtmetalle, Glasfaser- oder Kohlenstofffaserverbundmaterialien, Gewebe und insbesondere beschichtete Gewebe, Folien, gewebearmierte Verbundwerkstoffe, Kombinationen der vorstehenden Werkstoffe und dergleichen ähnliche Werkstoffe enthält.In one embodiment of the invention it is provided that on at least one side of the tool so on at least one of the two cylinder cover surfaces, a cover is arranged. The cover member is preferably made of a material selected from the group consisting of plastics, light metals, glass fiber or carbon fiber composite materials, fabrics and especially coated fabrics, films, fabric-reinforced composites, combinations of the above materials and the like of similar materials.

Bei der Verwendung eines Abdeckelements kann es von Vorteil sein, das Abdeckelement im wesentlichen über die gesamte Fläche des Trägerkörpers und auch des Füllmaterials stoffschlüssig mit diesem zu verbinden um so auch im Bereich über den mit dem Füllmaterial befüllten Durchführungen des Trägerkörpers eine ausreichend tragfähige Abdeckung der Durchführungen bzw. des Füllmaterials zu schaffen.When using a cover, it may be advantageous to the cover substantially over the entire surface of the support body and also of the filler cohesively with this to connect as well as in the area over the with the filler filled bushings of the support body to create a sufficiently viable coverage of the bushings or the filling material.

Bevorzugt kommt bei der stoffschlüssigen Verbindung des Abdeckelements mit dem Trägerkörper und/oder dem Füllmaterial ein dauerelastisches Verbindungsmaterial mit einem verhältnismäßig hohen Elastizitätsmodul zum Einsatz, wie beispielsweise Klebstoffe auf Harz-, Kunststoff- oder Silikonbasis.In the cohesive connection of the covering element with the carrier body and / or the filling material, a permanently elastic connecting material with a relatively high modulus of elasticity is preferably used, such as, for example, adhesives based on resin, plastic or silicone.

Durch die vorstehenden Maßnahmen kann erreicht werden, dass auch bei hohen Drehzahlen kein Eintritt von Kühlmittel oder Luft in die Durchführungen erfolgt wodurch die Geräuschentwicklung im Betrieb deutlich reduziert wird. Durch die erfindungsgemäße Lösung ist dennoch sicher gestellt, dass das Werkzeug seine radialelastizität nicht einbüßt, so dass die mit den gattungsgemäßen Werkzeugen erzielten vorteilhaften Schleifeigenschaften erhalten bleiben.By the above measures can be achieved that even at high speeds no entry of coolant or air in the bushings takes place whereby the noise during operation is significantly reduced. Nevertheless, the solution according to the invention ensures that the tool does not lose its radial elasticity, so that the advantageous grinding properties achieved with the generic tools are maintained.

Der Trägerkörper kann aus einer Vielzahl von Materialien hergestellt werden, beispielsweise Stahl, Aluminium, Kupfer, Bronze oder ähnliches, da die Schwingungsfähigkeit nicht durch das Materialeigenschaften selbst, sondern durch die geometrische Ausgestaltung der Durchführungen des Trägerkörpers erfolgt. Somit kann sowohl eine deutliche Gewichtsreduktion auch als eine gezielte Schwingungsdämpfung insbesondere bei metallischen Trägerkörpern erzielt werden, die nahezu keine radiale Elastizität bei Trägerkörpern aus Vollmaterial bzw. Trägerkörpern mit Durchführungen kleiner geometrischer Abmessungen besitzen.The carrier body may be made of a variety of materials, such as steel, aluminum, copper, bronze or the like, since the vibration is not carried out by the material properties themselves, but by the geometric configuration of the bushings of the carrier body. Thus, both a significant weight reduction can be achieved as a targeted vibration damping, especially in metallic support bodies, which have almost no radial elasticity in support bodies of solid material or support bodies with bushings of small geometric dimensions.

Bei einer bevorzugten Ausführungsform der Erfindung ist die Dicke des Trägerkörpers (in Richtung der Rotationsachse) kleiner als die des Mantelkörpers und/oder der Nabe, so dass der Trägerkörper in Bezug auf den Mantelkörper bzw. die durch diesen definierten Zylinderdeckflächen rückspringend verläuft und in diesem Rücksprung das Abdeckelement aufgenommen ist.In a preferred embodiment of the invention, the thickness of the carrier body (in the direction of the axis of rotation) is smaller than that of the jacket body and / or the hub, so that the carrier body rebounds with respect to the jacket body or the cylindrical top surfaces defined by the latter and in this recess the cover is received.

Bei einer Ausführungsform des Trägerkörpers sind die Durchführungen in ihrer Grundfläche in der Art von Vierecken ausgeführt wobei die langen Seiten bevorzugt radial verlaufend mit den kurzen Seiten verbunden sind und wobei die kurzen Seiten am Innen- bzw. Außenbereich des Trägerkörpers angeordnet sind. Ein geradliniger Verlauf der langen Seiten der Durchführungen ist dabei zwar bevorzugt jedoch nicht erforderlich. Ebenso ist eine gerundete Ausführung der Innenecken der Vierecke bevorzugt, so dass scharfkantigen Innenecken an den Durchführungen vorliegen.In one embodiment of the carrier body, the bushings are executed in the base in the form of squares, wherein the long sides are preferably connected radially extending with the short sides and wherein the short sides are arranged on the inner or outer region of the carrier body. Although a straight course of the long sides of the bushings is preferred but not required. Likewise, a rounded design of the inner corners of the squares is preferred so that sharp-edged inner corners are present at the bushings.

Bei einer Weiterbildung kann zumindest einer der kurzen Seiten in der Draufsicht, also bei Sicht auf eine zur Rotationsachse normal angeordneten Schnittebene durch den Trägerkörper, zumindest teilweise kreissegmentförmig sein, beispielsweise konzentrisch zum Außenumfang der Mantelfläche. Bevorzugt sind die beiden langen Seiten der jeweiligen Durchführung dabei gleich lang ausgeführt, so dass die Durchführungen des Trägerkörpers bei dieser Ausführungsform im wesentlichen ringsegmentförmig erscheinen.In a development, at least one of the short sides in the plan view, that is to say when viewing a cutting plane arranged normally by the carrier body, can be at least partially circular-segment-shaped, for example concentric with the outer circumference of the lateral surface. Preferably, the two long sides of the respective bushing are designed to be of equal length, so that the bushings of the carrier body in this embodiment appear substantially annular segment-shaped.

Zur weiteren Verbesserung der Schwingungsdämpfungseigenschaften des Werkzeugs sind bei einer bevorzugten Ausführungsform des Trägerkörpers die viereckartigen Durchführungen um einen außerhalb der jeweiligen Durchführung liegenden Punkt verzerrt oder verbogen, so dass die langen Seiten der Durchführungen in der Draufsicht im wesentlichen bogenförmig oder bevorzugt kreissegmentförmig sind. Die aus dem zwischen benachbarten Durchführungen verbleibenden Material dieser Ausführungsform entstehenden Speichen sind somit bogenförmig gekrümmt und bevorzugt kreisförmig gekrümmt und erstrecken sich im Innenbereich des Trägerkörpers, also weitgehend von der Nabe bzw. Achsaufnahme aus zunächst im wesentlichen radial nach außen, um dann, durch deren Krümmung, eine Art asymptotische Annäherung in Richtung des Umfangs des Werkzeugs hin zu erfahren. Der Grad bzw. das Ausmaß der Annäherung der Speichen an den Umfang des Werkzeug ist dabei unterschiedlich wählbar und gleichsam ein wesentlicher Parameter für die Radialelastizität des Werkzeugs.To further improve the vibration damping properties of the tool, in a preferred embodiment of the carrier body, the quadrangular passages are distorted or bent about a point located outside the respective feedthrough so that the long sides of the feedthroughs are substantially arcuate or preferably circular segmented in plan view. The spokes emerging from the material of this embodiment remaining between adjacent feedthroughs are thus arcuately curved and preferably circularly curved and extend in the inner region of the carrier body, ie substantially initially radially outwardly from the hub or axle receptacle, and then by their curvature to experience a kind of asymptotic approach towards the scope of the tool. The degree or extent of the approach of the spokes to the circumference of the tool is different selectable and, as it were, an essential parameter for the radial elasticity of the tool.

Bevorzugt verlaufen die langen Seiten benachbart liegender Durchführungen im wesentlichen parallel, wobei dies gleichermaßen für im wesentlichen radial verlaufende lange Seiten der Durchführungen gilt wie auch für gekrümmt oder sogar kreissegmentförmig verlaufende gilt. Dennoch sind beispielsweise auch solche Ausführungen im Rahmen der Erfindung bevorzugt, bei denen durch einen nicht parallelen Verlauf der langen Seiten benachbart liegender Durchführungen eine Verjüngung der Speichen hin zum äußeren Bereich des Trägerkörpers erfolgt, wodurch eine weitere Beeinflussung der Radialelastizität und des Gewichts der erfindungsgemäßen Werkzeuge dieser Ausführungsform erzielt werden kann.Preferably, the long sides of adjacent bushings extend substantially parallel, this equally applies to substantially radially extending long sides of the bushings as well as for curved or even circular segment running. Nevertheless, for example, those embodiments are preferred within the scope of the invention, in which a tapering of the spokes is carried out towards the outer region of the carrier body by a non-parallel course of the long sides of passages, whereby further influencing the radial elasticity and the weight of the tools according to the invention this Embodiment can be achieved.

Bei einer weiteren Ausführungsform des Trägerkörpers sind zur Erzielung einer besonders guten Schwingungsdämpfung die Durchführungen des Trägerkörpers von dessen gegenüber liegenden Zylinderdeckflächen her im wesentlichen bis zu dessen Mitte in das Material des Trägerkörpers hinein eingearbeitet, beispielsweise durch Fräsen. Besonders vorteilhaft ist dabei, die Durchführungen, die von der zweiten Seite, also beispielsweise der oberen Zylinderdeckfläche des Trägerkörpers her kommend eingearbeitet werden um einen vorgegebenen Rotationswinkel α um die Rotationsachse rotiert bezüglich denen, die von der ersten Seite des Trägerkörpers, also beispielsweise der unteren Zylinderdeckfläche her kommend eingearbeitet werden zu rotieren. Im Ergebnis sind somit die Speichen zwischen benachbarten Durchführungen einer Seite des Trägerkörpers im wesentlichen nicht deckungsgleich mit den Speichen zwischen benachbarten Durchführungen der anderen Seite des Trägerkörpers.In a further embodiment of the carrier body to achieve a particularly good vibration damping, the bushings of the carrier body from its opposite cylindrical top surfaces ago essentially incorporated to the middle in the material of the carrier body, for example by milling. It is particularly advantageous, the bushings, which are incorporated from the second side, so for example, the upper cylinder top surface of the carrier body ago by a predetermined rotation angle α about the axis of rotation rotates with respect to those of the first side of the carrier body, so for example the lower cylinder top surface will be incorporated to rotate. As a result, the spokes between adjacent feedthroughs of one side of the carrier body are thus substantially not congruent with the spokes between adjacent feedthroughs of the other side of the carrier body.

Bevorzugte Rotationswinkel α liegen dabei zwischen 0° und 90°, jeweils einschließlich, vorzugsweise zwischen 30° und 60°, bevorzugt bei 45°, und besonders bevorzugt bei die Hälfte der Winkelteilung der Durchführungen, also bei einem Winkel α = 360°/(2n), wobei n die Zahl der Durchführungen in einer bezüglich der Rotationsachse normalen Schnittebene ist.Preferred angles of rotation α lie between 0 ° and 90 °, in each case inclusive, preferably between 30 ° and 60 °, preferably at 45 °, and particularly preferably at half the angular pitch of the bushings, ie at an angle α = 360 ° / (2n ), where n is the number of feedthroughs in a plane normal to the axis of rotation.

Bevorzugt ist zur Verminderung und bestenfalls zur Verhinderung von Unwuchten des erfindungsgemäßen Werkzeugs in dessen Einsatz könnten im Träger- und/oder Mantelkörper wenigstens eine, je nach Bedarf auch mehrere Wuchtbohrungen vorgesehen.It is preferred to reduce and at best to prevent imbalance of the tool according to the invention in its use could be provided in the carrier and / or sheath body at least one, as needed, several balancing bores.

Bevorzugt ist der Schleifbelag durch Kleben oder Sintern oder ähnliche bekannte Verfahren auf der Außenumfangsfläche des Mantelkörpers aufgebracht und vorzugsweise aus einer Gruppe ausgewählt, die Diamantnadeln wie zum Beispiel PKD-, MKD-, CVD-, CBN-Nadeln, metall-, kunststoff- oder keramikgebundene Diamanten, metall- oder kunststoffgebundenes Bornitrid, insbesondere kubisches Bornitrid umfasst.Preferably, the abrasive coating is applied by gluing or sintering or similar known methods on the outer peripheral surface of the sheath body and preferably selected from a group of diamond needles such as PCD, MKD, CVD, CBN needles, metal, plastic or ceramic bonded Diamonds, metal or plastic bonded boron nitride, in particular cubic boron nitride.

Weitere Merkmale der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung von bevorzugten Ausführungsbeispielen des erfindungsgemäßen Werkzeugs in Verbindung mit der Zeichnung. Es zeigt:

Fig. 1
gattungsgemäßes Werkzeug gemäß dem Stand der Technik;
Fig. 2
in einer Schnittansicht, eine schematische Ansicht eines ersten Ausführungsbeispiels eines erfindungsgemäßen Werkzeugs;
Fig. 3
in einer Schnittansicht, eine schematische Ansicht eines zweiten Ausführungsbeispiels eines erfindungsgemäßen Werkzeugs.
Further features of the present invention will become apparent from the following description of preferred embodiments of the tool according to the invention in conjunction with the drawings. It shows:
Fig. 1
generic tool according to the prior art;
Fig. 2
in a sectional view, a schematic view of a first embodiment of a tool according to the invention;
Fig. 3
in a sectional view, a schematic view of a second embodiment of a tool according to the invention.

Die Fig. 1 zeigt ein gattungsgemäßes Werkzeug mit einem Trägerkörper 1, einem Mantelkörper 4 mit einem Schleifbelag B und einer Nabe bzw. Aufnahme 5. Der Trägerkörper weist mehrere Durchführungen 2 auf und zwischen den Durchführungen 2 liegende Speichen 3, welche sich vorliegend kreissegmentförmig vom Innenbereich des Trägerkörpers bis in dessen Außenbereich erstrecken und sich in deren Erstreckungsrichtung an den Verlauf des Mantelkörpers annähern.The Fig. 1 shows a generic tool with a support body 1, a shell body 4 with an abrasive coating B and a hub or receptacle 5. The support body has a plurality of bushings 2 and lying between the passages 2 spokes 3, which in this case circular segment-shaped from the inner region of the support body to extend its outer region and approach in the direction of extension of the course of the shell body.

Die Fig. 2 und 3 zeigen schematische Schnittansichten von Schleifscheiben gemäß der vorliegenden Erfindung, wobei zur vereinfachten Erläuterung die erfindungsgemäßen Werkzeuge entlang einer Schnittlinie die der Schnittlinie X-X der Fig. 1 entspricht, geschnitten sind. In den Figuren bezeichnen gleiche Bezugszeichen entsprechende Elemente oder Elemente mit korrespondierenden Funktionen.The Fig. 2 and 3 show schematic sectional views of grinding wheels according to the present invention, wherein for ease of explanation, the tools according to the invention along a section line that the section line XX of Fig. 1 corresponds, cut are. In the figures, like reference numerals designate corresponding elements or elements with corresponding functions.

Fig. 2 zeigt eine Ausführungsform der Erfindung, bei der die Durchführungen 2 mit einem Füllmaterial 20, bevorzugt einem geschäumten Kunststoff wie beispielsweise Pulyurethan- oder PVC-Schaum, befüllt sind. Das Füllmaterial schließt dabei bevorzugt bündig mit den Zylinderdeckflächen des Trägerkörpers ab, so dass diese im Wesentlichen eben sind. Fig. 2 shows an embodiment of the invention in which the bushings 2 are filled with a filling material 20, preferably a foamed plastic such as Pulyurethan- or PVC foam. The filler material preferably terminates flush with the cylinder cover surfaces of the carrier body, so that they are substantially planar.

Eine Weiterbildung der Ausführungsform gemäß Fig. 2 ist in Fig. 3 gezeigt. Demnach sind die Zylinderdeckflächen des Trägerkörpers mit Abdeckelementen 10 versehen, wobei diese im Wesentlichen flächig mit dem Trägerkörper und insbesondere dessen Speichen 3 und optional auch den Oberflächen des Füllmaterials 20 stoffschlüssig verbunden sind. Bei der gezeigten Ausführungsform sind die Abdeckelemente 10 aus einem dünnen aber reißfesten Gewebe gefertigt, so dass durch die vollflächige stoffschlüssige Verbindung des Gewebes mit der Oberfläche des Trägerkörpers und optional auch des Füllmaterials eine strapazierfähige aber dennoch sehr leichte Oberfläche durch die Abdeckelemente 10 gebildet wird. Insbesondere ist dies der Fall, wenn das Gewebe durch das für die stoffschlüssige Verbindung verwendete Material durchtränkt wird.A development of the embodiment according to Fig. 2 is in Fig. 3 shown. Accordingly, the cylindrical top surfaces of the carrier body are provided with cover elements 10, wherein these are substantially flat connected to the carrier body and in particular its spokes 3 and optionally also the surfaces of the filling material 20 cohesively. In the embodiment shown, the cover elements 10 are made of a thin but tear-resistant fabric, so that a durable, yet very light surface is formed by the cover 10 by the full-surface cohesive connection of the fabric with the surface of the carrier body and optionally also the filling material. In particular, this is the case when the tissue is impregnated by the material used for the cohesive connection.

Hinsichtlich weiterer Details wird zur Vermeidung von Wiederholung auf die allgemeine Beschreibung verwiesen. Schließlich sei darauf hingewiesen, dass die in den voran stehenden Ausführungsbeispielen und in der allgemeinen Beschreibung beschriebenen Merkmale im Rahmen der Patentansprüche kombiniert werden können.For further details reference is made to avoid repetition to the general description. Finally, it should be noted that the features described in the preceding embodiments and in the general description can be combined within the scope of the claims.

Claims (8)

  1. A tool for processing materials, in particular an abrasive wheel, having an outer geometry which is substantially cylindrically symmetrical relative to a rotational axis, an internal hub (5) through the center of which the rotational axis extends centrically, an external shell body (4) concentric therewith, and at least one carrier body (1) arranged between the hub and the shell body, which carrier body preferably is integral with the hub (A) and/or the shell body, the carrier body (1) being configured with at least two apertures (2) which extend from the inner portion of the carrier body towards the shell body (4), characterized in that
    at least some of the apertures (2) are filled with a filler material (20) such that the respective apertures (2) are at least partially sealed.
  2. The tool of claim 1, characterized in that the filler material (20) is a foam and is, in particular, selected from a group comprising foamed plastics and metals, particularly polyurethane foams, PVC foams or polystyrene foams, foamed aluminum, and similar such materials.
  3. The tool of claim 1 or 2, characterized in that the filler material (20) completely fills the apertures (2) and is flush with the cylinder cover surfaces of the carrier body (1).
  4. The tool of any of the preceding claims, characterized in that a covering element is arranged at least at one of the two cylinder cover surfaces of the tool.
  5. The tool of claim 4, characterized in that the covering element (10) is made of a material selected from a group comprising plastics, light metals, glass-fiber composite materials or carbon-fiber composite materials, fabrics and, in particular, coated fabrics, films, fabric-reinforced composite materials, combinations of the aforementioned materials, and similar such materials.
  6. The tool of any of the preceding claims, characterized in that all of the apertures (2) of the carrier body are covered completely by the covering element (10).
  7. The tool of any of the preceding claims, characterized in that the covering element (10) is connected to the carrier body (1) in a substantially full-surface manner and, optionally, to the filler material (20) by adhesive force.
  8. The tool of any of the preceding claims, characterized in that the material for providing the connection by adhesive force is an adhesive, preferably a permanently elastic adhesive, and in particular a resin-based, plastic-based or silicone-based adhesive.
EP15187427.8A 2013-05-31 2014-05-07 Tool for processing materials Not-in-force EP3000558B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15187427T PL3000558T3 (en) 2013-05-31 2014-05-07 Tool for processing materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013105616.4A DE102013105616A1 (en) 2013-05-31 2013-05-31 Tool for editing materials
EP14167429.1A EP2810739B1 (en) 2013-05-31 2014-05-07 Tool for processing materials

Related Parent Applications (2)

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EP14167429.1A Division EP2810739B1 (en) 2013-05-31 2014-05-07 Tool for processing materials
EP14167429.1A Division-Into EP2810739B1 (en) 2013-05-31 2014-05-07 Tool for processing materials

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EP3000558A2 EP3000558A2 (en) 2016-03-30
EP3000558A3 EP3000558A3 (en) 2016-04-13
EP3000558B1 true EP3000558B1 (en) 2017-07-12

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DE (1) DE102013105616A1 (en)
HU (2) HUE036768T2 (en)
PL (2) PL2810739T3 (en)

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Publication number Priority date Publication date Assignee Title
DE102016102336A1 (en) * 2016-02-10 2017-08-10 Weber Maschinenbau Gmbh Breidenbach ROTATION BODY
AT518908B1 (en) * 2016-08-11 2019-04-15 Tyrolit Schleifmittelwerke Swarovski Kg Carrier body for grinding tools
AT519694B1 (en) * 2017-03-14 2021-09-15 Tyrolit Schleifmittelwerke Swarovski Kg Carrier body for a grinding or cutting tool
CN107303655B (en) * 2017-07-28 2019-05-24 义乌市台荣超硬制品有限公司 A kind of combined polishing disc structure
DE102022113308B4 (en) 2022-05-25 2024-06-27 Lightway GmbH Grinding wheel holder

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8427120U1 (en) * 1984-12-06 Uhle, Max, Castelnuovo del Garda disc
DE732575C (en) * 1940-04-21 1943-03-05 Hellmuth Steglich Tooth grinding wheel with moistening device
US2508946A (en) * 1947-11-28 1950-05-23 Robert H Hoffman Safety abrasive wheel and arbor flange
US3145511A (en) * 1961-12-04 1964-08-25 Joseph L Bird Grinding or abrading tool
DE2521678A1 (en) * 1975-05-15 1976-11-25 Wendt Gmbh Metal support disc for grinding wheels - dissipates heat generated during grinding and damps vibrations by grooves in wheel discs
US4004378A (en) 1975-07-18 1977-01-25 Engelhard Minerals & Chemicals Corporation Grinding wheel with integral blower
AT400013B (en) * 1990-05-07 1995-09-25 Rappold International Sales Ag Abrasive arrangement
US8157619B2 (en) * 2005-06-27 2012-04-17 Husqvarna Professional Outdoor Products Inc. Tools and methods for making and using tools, blades and methods of making and using blades
DE102012005085A1 (en) 2012-03-13 2013-09-19 Dr. Müller Diamantmetall AG Tool for editing materials

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EP3000558A3 (en) 2016-04-13
PL3000558T3 (en) 2017-12-29
DE102013105616A1 (en) 2014-12-04
EP2810739A1 (en) 2014-12-10
PL2810739T3 (en) 2017-10-31
HUE034547T2 (en) 2018-02-28
EP3000558A2 (en) 2016-03-30
HUE036768T2 (en) 2018-07-30
EP2810739B1 (en) 2017-03-08

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