EP3455031A1 - Grinding wheel with a vibration-damping support body - Google Patents

Grinding wheel with a vibration-damping support body

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Publication number
EP3455031A1
EP3455031A1 EP17719985.8A EP17719985A EP3455031A1 EP 3455031 A1 EP3455031 A1 EP 3455031A1 EP 17719985 A EP17719985 A EP 17719985A EP 3455031 A1 EP3455031 A1 EP 3455031A1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
vibration
coupling region
abrasive coating
carrier body
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.)
Granted
Application number
EP17719985.8A
Other languages
German (de)
French (fr)
Other versions
EP3455031B1 (en
Inventor
Harald KÖCHL
Karl Mayrhofer
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.)
Tyrolit-Schleifmittelwerke Swarovski KG
Original Assignee
Tyrolit-Schleifmittelwerke Swarovski KG
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 Tyrolit-Schleifmittelwerke Swarovski KG filed Critical Tyrolit-Schleifmittelwerke Swarovski KG
Priority to SI201730270T priority Critical patent/SI3455031T1/en
Priority to PL17719985T priority patent/PL3455031T3/en
Publication of EP3455031A1 publication Critical patent/EP3455031A1/en
Application granted granted Critical
Publication of EP3455031B1 publication Critical patent/EP3455031B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B24D5/16—Bushings; Mountings
    • 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
    • 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • 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
    • B24D5/02—Wheels in one piece
    • 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
    • B24D5/12—Cut-off wheels

Definitions

  • the invention relates to a grinding wheel with a carrier body, which has a central coupling region for connecting the grinding wheel to a rotary drive for rotating the grinding wheel about a coupling axis extending through the axis of rotation and a peripheral surface, and with an abrasive coating, which is applied to the peripheral surface of the carrier body, in particular Sintered is.
  • the grinding wheel 101 comprises a carrier body 102 made of steel with a central coupling region 104 for connecting the grinding wheel 101 to a rotary drive for rotating the grinding wheel 101, passing through the coupling region 104 Rotation axis 105.
  • the carrier body 102 further has a peripheral surface 106, on which an abrasive coating 107 is applied.
  • the grinding insert generates vibrations which radiate over all areas of the grinding wheel and the workpiece to be machined. If one or more natural frequencies are excited, the vibrations are even amplified. The vibrations can also adversely affect the accuracy and thus the quality of the grinding result.
  • the objective technical object of the present invention is therefore to provide a grinding wheel according to the preamble of claim 1, in which these disadvantages are avoided.
  • the carrier body comprises a first part and a second part connected thereto, wherein the first part has the peripheral surface, and the second part has the coupling region and consists essentially of a vibration-damping material.
  • the vibration decoupling or damping by the second part of the carrier body thus takes place in two directions: on the one hand, the vibrations generated by the abrasive coating and, on the other hand, the vibrations caused by the rotary drive or the grinding machine are damped and decoupled from one another. In the prior art, some overlapping and additional amplification of these vibrations takes place.
  • a damping of the vibrations caused by the spindle of the drive through the second part of the carrier body also has a favorable effect, for example, on the bearings of the spindle, since they are less stressed.
  • the invention is therefore not only to provide a support body with a vibration-damping material, but at least two parts perform the support body, wherein one part consists essentially of a vibration-damping material and the other part can be created from a different material, which other, for the grinding insert has favorable physical properties.
  • the vibration-damping material of the second part may be, for example, cast iron, preferably with lamellar graphite (eg GJL 250), spheroidal graphite, vermicular graphite, or cast steel, and / or aluminum bronze and / or fiber-reinforced, preferably carbon fiber reinforced, plastic.
  • the first part of the carrier body can essentially consist of a vibration-conducting and / or heat-conducting material, preferably steel or aluminum.
  • the abrasive coating is formed contactlessly to the second part, so that vibrations occurring during a grinding process can be transferred indirectly via the first part to the second part and attenuated by means of the second part.
  • the first part consists essentially of a fiber-reinforced, preferably carbon fiber reinforced, plastic and the second part consists essentially of cast iron.
  • both parts are made of a vibration-damping material.
  • the invention does not necessarily provide that the first part consists of a vibration-conducting material.
  • a, preferably axial, screw connection can be provided. It is particularly advantageous to provide in the first and / or second part recesses, in which threaded bushes used, preferably glued, are. In this way, the second part can be supplied for reuse in a particularly simple manner. Alternatively, it would also be possible to cut the threads directly into the first and / or second part.
  • the second part has an approximately twice as large volume as the first part, and / or the second part has a higher weight compared to the first part. This is a very massive second part, which dampens the vibrations occurring in the grinding insert in a particularly efficient manner.
  • Figure 2 shows a preferred embodiment of an inventive
  • FIG. 3 shows the first part of the carrier body of the grinding wheel from FIG. 2
  • FIG. 4 shows the second part of the carrier body of the grinding wheel from FIG. 2.
  • the grinding wheel 1 illustrated in FIGS. 2 to 4 comprises a carrier body which is constructed from a first part 2 and a second part 3 connected thereto.
  • the first part 2 consists essentially of steel and is therefore vibration and heat conducting.
  • the first part 2 has a peripheral surface 6, on which an abrasive coating 7 with a width 12 of approximately 5 mm is sintered. Vibrations and heat generated in the grinding insert can be dissipated via the first part 1.
  • the first part 2 is connected via two contact surfaces 10 and 1 1 with the second part 3 in connection, wherein the rotation axis 5 is aligned substantially normal to the contact surface 10 and substantially parallel to the contact surface 1 1. In this case, the contact surface 10 is a multiple greater than the contact surface 1 1.
  • the vibrations are forwarded to the second part 3.
  • This consists essentially of a vibration-damping material, such as cast iron with lamellar graphite or aluminum bronze or fiber-reinforced, preferably carbon fiber reinforced plastic. Due to the vibration damping properties of the second part 3, the vibrations transmitted by the first part 2 are damped.
  • the grinding wheel 1 is formed asymmetrically with respect to an imaginary center plane normal to the axis of rotation 5.
  • the second part 3 has a coupling region 4 for connecting the grinding wheel 1 to a rotary drive for rotating the grinding wheel 1 about an axis of rotation 5 extending through the coupling region 4.
  • the coupling region 4 is formed as a central bore.
  • the coupling region 4 is therefore formed directly in the vibration-damping material of the second part 3, so that the second part 3 acts as a hub.
  • the second part 3 When assembling the grinding wheel 1, the second part 3 is introduced with an approximately cylindrical projection 16 in a corresponding recess 14 which is provided in the first part 2, namely until the parts 2 and 3 are flush with each other. Subsequently, the two parts 2 and 3 are firmly connected.
  • it is an axial screw, so a screw parallel to the axis of rotation 5.
  • recesses 9 In which threaded bushings 8 are glued. These are arranged in alignment with recesses 15, which are provided in the first part 2.
  • a screw head has space. After joining the two parts 2 and 3, these can be firmly connected by screws 13 together.
  • the first part 2 can be removed again and replaced by a new first part 2, wherein the second part 3 can be reused.
  • the arrangement of the recesses 9 and 15 in the two parts 2 and 3 represents only an exemplary possibility of how a screw connection can be realized. A reverse arrangement is possible. Furthermore, as already stated, the thread can also be cut directly into one of the two parts 2 or 3. Finally, other types of connection can be used instead of the screw connection-alternatively or additionally-such as, for example, bonding of the two parts 2 and 3.

Landscapes

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

Abstract

The invention relates to a grinding wheel (1) comprising a support body (2, 3) which has a central coupling region (4) for attaching the grinding wheel (1) to a rotary drive for rotating the grinding wheel (1) about a rotational axis (5) running through the coupling region (4) and which has a circumferential surface (6). The grinding wheel also comprises a grinding layer (7) which is applied, in particular sintered, onto the circumferential surface (6) of the support body (2, 3). The support body (2, 3) comprises a first part (2) and a second part (3) connected to the first part. The first part (2) has the circumferential surface (6), and the second part (3) has the coupling region (4) and consists substantially of a vibration-damping material.

Description

SCHLEIFSCHEIBE MIT EINEM SCHWINUNGSDÄMFINGEN TRÄGERKÖRPER  GRINDING WHEEL WITH A TAILGATE FASTENER BODY
Die Erfindung betrifft eine Schleifscheibe mit einem Trägerkörper, welcher einen zentralen Koppelbereich zur Anbindung der Schleifscheibe an einen Drehantrieb zum Drehen der Schleifscheibe um eine durch den Koppelbereich verlaufende Drehachse und eine Umfangsfläche aufweist, und mit einem Schleifbelag, welcher auf die Umfangsfläche des Trägerkörpers aufgebracht, insbesondere aufgesintert, ist. The invention relates to a grinding wheel with a carrier body, which has a central coupling region for connecting the grinding wheel to a rotary drive for rotating the grinding wheel about a coupling axis extending through the axis of rotation and a peripheral surface, and with an abrasive coating, which is applied to the peripheral surface of the carrier body, in particular Sintered is.
In der Figur 1 ist eine Schleifscheibe 101 gemäß dem Stand der Technik dargestellt: Die Schleifscheibe 101 umfasst einen Trägerkörper 102 aus Stahl mit einem zentralen Koppelbereich 104 zur Anbindung der Schleifscheibe 101 an einen Drehantrieb zum Drehen der Schleifscheibe 101 , um eine durch den Koppelbereich 104 verlaufende Drehachse 105. Der Trägerkörper 102 weist weiterhin eine Umfangsfläche 106 auf, auf welche ein Schleifbelag 107 aufgebracht ist. Im Schleifbetrieb kann eine solche Schleifscheibe 101 einen ohrenbetäubenden Lärm verursachen, wodurch der Einsatz von einem Gehörschutz notwendig ist. Der Grund hierfür ist, dass beim Schleifeinsatz Schwingungen entstehen, die über alle Bereiche der Schleifscheibe und des zu bearbeitenden Werkstücks ausstrahlen. Werden dabei eine oder mehrere Eigenfrequenzen angeregt, kommt es sogar zu einer Verstärkung der Schwingungen. Durch die Schwingungen können auch die Genauigkeit und damit die Qualität des Schleifergebnisses negativ beeinflusst werden. 1 shows a grinding wheel 101 according to the prior art: The grinding wheel 101 comprises a carrier body 102 made of steel with a central coupling region 104 for connecting the grinding wheel 101 to a rotary drive for rotating the grinding wheel 101, passing through the coupling region 104 Rotation axis 105. The carrier body 102 further has a peripheral surface 106, on which an abrasive coating 107 is applied. In grinding operation, such a grinding wheel 101 can cause a deafening noise, making the use of hearing protection necessary. The reason for this is that the grinding insert generates vibrations which radiate over all areas of the grinding wheel and the workpiece to be machined. If one or more natural frequencies are excited, the vibrations are even amplified. The vibrations can also adversely affect the accuracy and thus the quality of the grinding result.
Die objektive technische Aufgabe der vorliegenden Erfindung besteht somit darin, eine Schleifscheibe gemäß dem Oberbegriff des Anspruchs 1 anzugeben, bei welcher diese Nachteile vermieden werden. The objective technical object of the present invention is therefore to provide a grinding wheel according to the preamble of claim 1, in which these disadvantages are avoided.
Diese Aufgabe wird durch die Merkmale des unabhängigen Anspruchs 1 gelöst. This object is solved by the features of independent claim 1.
Es ist also erfindungsgemäß vorgesehen, dass der Trägerkörper einen ersten Teil und einen damit verbundenen zweiten Teil umfasst, wobei der erste Teil die Umfangsfläche aufweist, und der zweite Teil den Koppelbereich aufweist und im Wesentlichen aus einem schwingungsdämpfenden Material besteht. Durch das Vorsehen eines zweiten Teils, der im Wesentlichen aus einem schwingungsdämpfenden Material besteht, können die beim Schleifeinsatz entstehenden Schwingungen effizient im Trägerkörper absorbiert werden. Ein Resonanzverhalten im Bereich der Eigenfrequenzen wird dadurch unterdrückt. Selbst bei hoher Umdrehungsgeschwindigkeit der Schleifscheibe ist kein zusätzlicher Gehörschutz vonnöten. Auch findet eine Schwingungsentkopplung der Schleifscheibe von dem Drehantrieb statt, sodass sich Schwingungen nicht von der Schleifscheibe auf den Drehantrieb - und umgekehrt - übertragen. Die Schwingungsentkoppelung bzw. Dämpfung durch den zweiten Teil des Trägerkörpers erfolgt also in zwei Richtungen: Zum einen werden die vom Schleifbelag generierten Schwingungen und zum anderen die von dem Drehantrieb bzw. der Schleifmaschine verursachten Schwingungen gedämpft und voneinander entkoppelt. Im Stand der Technik findet teilweise eine Überlagerung und zusätzliche Verstärkung dieser Schwingungen statt. Eine Dämpfung der durch die Spindel des Antriebs verursachten Schwingungen durch den zweiten Teil des Trägerkörpers wirkt sich darüber hinaus auch noch günstig z.B. auf die Lager der Spindel aus, da diese weniger beansprucht werden. It is therefore provided according to the invention that the carrier body comprises a first part and a second part connected thereto, wherein the first part has the peripheral surface, and the second part has the coupling region and consists essentially of a vibration-damping material. By providing a second part, which essentially consists of a vibration-damping material, the vibrations arising during the grinding operation can be absorbed efficiently in the carrier body. A resonance behavior in the range of natural frequencies is thereby suppressed. Even at high rotational speed of the grinding wheel no additional hearing protection is needed. Also, a vibration decoupling of the grinding wheel takes place from the rotary drive, so that vibrations are not transmitted from the grinding wheel to the rotary drive - and vice versa. The vibration decoupling or damping by the second part of the carrier body thus takes place in two directions: on the one hand, the vibrations generated by the abrasive coating and, on the other hand, the vibrations caused by the rotary drive or the grinding machine are damped and decoupled from one another. In the prior art, some overlapping and additional amplification of these vibrations takes place. A damping of the vibrations caused by the spindle of the drive through the second part of the carrier body also has a favorable effect, for example, on the bearings of the spindle, since they are less stressed.
Außerdem ist es durch das Vorsehen eines ersten Teils möglich, diesen in einem Material auszuführen, das wärmeleitend ist und so die im Bereich des Schleifbelags entstehende Wärme effizient abführt. Würde man nur einen einteiligen Trägerkörper verwenden, der vollständig aus einem schwingungsdämpfenden Material besteht, würde es zu einem Wärmestau kommen, der Schwingungen und Scheibenverzug fördert. Die Erfindung besteht also nicht nur darin, einen Trägerkörper mit einem schwingungsdämpfenden Material vorzusehen, sondern den Trägerkörper zumindest zweiteilig auszuführen, wobei ein Teil im Wesentlichen aus einem schwingungsdämpfenden Material besteht und der andere Teil aus einem davon abweichenden Material geschaffen werden kann, welches andere, für den Schleifeinsatz günstige physikalische Eigenschaften aufweist. Ist der am ersten Teil angeordnete Schleifbelag verbraucht, so kann der erste Teil wieder entfernt und durch einen frischen ersten Teil ersetzt werden, wobei der zweite Teil wiederverwendet werden kann. Auch dies ist ein weiterer Vorteil des zweiteiligen Aufbaus des Trägerkörpers im Vergleich zum Stand der Technik. Bei dem schwingungsdämpfenden Material des zweiten Teils kann es sich beispielsweise um Gusseisen, vorzugsweise mit Lamellengraphit (z.B. GJL 250), Kugelgraphit, Vermikulargraphit, oder Stahlguss, und/oder um Aluminiumbronze und/oder um faserverstärkten, vorzugsweise carbonfaserverstärkten, Kunststoff handeln. In addition, by providing a first part, it is possible to make it in a material which is thermally conductive and thus efficiently dissipates the heat generated in the region of the abrasive coating. If you were to use only a one-piece carrier body, which consists entirely of a vibration-damping material, it would come to a heat accumulation, which promotes vibration and disc distortion. The invention is therefore not only to provide a support body with a vibration-damping material, but at least two parts perform the support body, wherein one part consists essentially of a vibration-damping material and the other part can be created from a different material, which other, for the grinding insert has favorable physical properties. If the abrasive coating arranged on the first part is used up, the first part can be removed again and replaced by a fresh first part, wherein the second part can be reused. This is another advantage of the two-part construction of the carrier body compared to the prior art. The vibration-damping material of the second part may be, for example, cast iron, preferably with lamellar graphite (eg GJL 250), spheroidal graphite, vermicular graphite, or cast steel, and / or aluminum bronze and / or fiber-reinforced, preferably carbon fiber reinforced, plastic.
Der erste Teil des Trägerkörpers kann im Wesentlichen aus einem schwingungsleitenden und/oder wärmeleitenden Material, vorzugsweise Stahl oder Aluminium, bestehen. The first part of the carrier body can essentially consist of a vibration-conducting and / or heat-conducting material, preferably steel or aluminum.
Es bietet sich auch an, dass der Schleifbelag kontaktlos zum zweiten Teil ausgebildet ist, so dass bei einem Schleifvorgang auftretende Schwingungen indirekt über den ersten Teil auf den zweiten Teil übertragbar und mittels des zweiten Teils dämpfbar sind. It is also advisable that the abrasive coating is formed contactlessly to the second part, so that vibrations occurring during a grinding process can be transferred indirectly via the first part to the second part and attenuated by means of the second part.
Eine besonders vorteilhafte Materialwahl besteht darin, dass der erste Teil im Wesentlichen aus einem faserverstärkten, vorzugsweise carbonfaserverstärkten, Kunststoff und der zweite Teil im Wesentlichen aus Gusseisen besteht. In diesem Fall sind beide Teile aus einem schwingungsdämpfenden Material gefertigt. Die Erfindung sieht also nicht zwingend vor, dass der erste Teil aus einem schwingungsleitenden Material besteht. A particularly advantageous choice of material is that the first part consists essentially of a fiber-reinforced, preferably carbon fiber reinforced, plastic and the second part consists essentially of cast iron. In this case, both parts are made of a vibration-damping material. Thus, the invention does not necessarily provide that the first part consists of a vibration-conducting material.
Zur Verbindung des ersten und zweiten Teils des Trägerkörpers kann eine, vorzugsweise axiale, Schraubverbindung vorgesehen sein. Besonders vorteilhaft ist es dabei, in dem ersten und/oder zweiten Teil Ausnehmungen vorzusehen, in welche Gewindebuchsen eingesetzt, vorzugsweise eingeklebt, sind. Auf diese Weise kann der zweite Teil in besonders einfacher Weise einer Wiederverwendung zugeführt werden. Alternativ wäre es aber auch möglich, die Gewinde direkt in den ersten und/oder zweiten Teil zu schneiden. For connecting the first and second part of the carrier body, a, preferably axial, screw connection can be provided. It is particularly advantageous to provide in the first and / or second part recesses, in which threaded bushes used, preferably glued, are. In this way, the second part can be supplied for reuse in a particularly simple manner. Alternatively, it would also be possible to cut the threads directly into the first and / or second part.
Als besonders vorteilhaft hat sich herausgestellt, dass der zweite Teil ein ca. doppelt so großes Volumen wie der erste Teil aufweist, und/oder der zweite Teil im Vergleich zum ersten Teil ein höheres Gewicht aufweist. Damit handelt es sich um einen sehr massiven zweiten Teil, der in besonders effizienter Weise die im Schleifeinsatz entstehenden Schwingungen dämpft. It has proven to be particularly advantageous that the second part has an approximately twice as large volume as the first part, and / or the second part has a higher weight compared to the first part. This is a very massive second part, which dampens the vibrations occurring in the grinding insert in a particularly efficient manner.
Weitere vorteilhafte Ausgestaltungen der erfindungsgemäßen Schleifscheibe sind in den abhängigen Ansprüchen 9-15 definiert. Further advantageous embodiments of the grinding wheel according to the invention are defined in the dependent claims 9-15.
Weitere Einzelheiten und Vorteile der Erfindung werden anhand der Figurenbeschreibung unter Bezugnahme auf die Zeichnungen im Folgenden näher erläutert. Darin zeigen: Further details and advantages of the invention will be explained in more detail below with reference to the description of the figures with reference to the drawings. Show:
Figur 1 eine bereits eingangs beschriebene Schleifscheibe gemäß dem Stand der Technik in einer Querschnittsdarstellung, 1 shows a grinding wheel according to the prior art already described in a cross-sectional representation,
Figur 2 ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen  Figure 2 shows a preferred embodiment of an inventive
Schleifscheibe im Querschnitt,  Grinding wheel in cross-section,
Figur 3 den ersten Teil des Trägerkörpers der Schleifscheibe aus Figur 2, und Figur 4 den zweiten Teil der Trägerkörpers der Schleifscheibe aus Figur 2. FIG. 3 shows the first part of the carrier body of the grinding wheel from FIG. 2, and FIG. 4 shows the second part of the carrier body of the grinding wheel from FIG. 2.
Die in den Figuren 2 bis 4 dargestellte Schleifscheibe 1 umfasst einen Trägerkörper, der aus einem ersten Teil 2 und einem damit verbundenen zweiten Teil 3 aufgebaut ist. Der erste Teil 2 besteht im Wesentlichen aus Stahl und ist damit schwingungs- und wärmeleitend. Der erste Teil 2 weist eine Umfangsfläche 6 auf, auf die ein Schleifbelag 7 mit einer Breite 12 von ca. 5 mm aufgesintert ist. Im Schleifeinsatz entstehende Schwingungen und Wärme können über den ersten Teil 1 abgeleitet werden. Der erste Teil 2 steht über zwei Kontaktflächen 10 und 1 1 mit dem zweiten Teil 3 in Verbindung, wobei die Drehachse 5 im Wesentlichen normal zur Kontaktfläche 10 und im Wesentlichen parallel zur Kontaktfläche 1 1 ausgerichtet ist. Dabei ist die Kontaktfläche 10 ein Vielfaches größer als die Kontaktfläche 1 1 . Über diese Kontaktflächen 10 und 1 1 werden die Schwingungen an den zweiten Teil 3 weitergeleitet. Dieser besteht im Wesentlichen aus einem schwingungsdämpfenden Material, beispielsweise Gusseisen mit Lamellengraphit oder Aluminiumbronze oder faserverstärktem, vorzugsweise carbonfaserverstärktem, Kunststoff. Durch die schwingungsdämpfenden Eigenschaften des zweiten Teils 3 werden die von dem ersten Teil 2 weitergeleiteten Schwingungen gedämpft. Insgesamt gesehen ist die Schleifscheibe 1 in Bezug auf eine gedachte Mittelebene normal zur Drehachse 5 asymmetrisch ausgebildet. Der zweite Teil 3 weist einen Koppelbereich 4 zur Anbindung der Schleifscheibe 1 an einen Drehantrieb zum Drehen der Schleifscheibe 1 um eine durch den Koppelbereich 4 verlaufende Drehachse 5 auf. Der Koppelbereich 4 ist als Mittelbohrung ausgebildet. Der Koppelbereich 4 ist also direkt im schwingungsdämpfenden Material des zweiten Teils 3 ausgebildet, so dass das zweite Teil 3 als Nabe fungiert. The grinding wheel 1 illustrated in FIGS. 2 to 4 comprises a carrier body which is constructed from a first part 2 and a second part 3 connected thereto. The first part 2 consists essentially of steel and is therefore vibration and heat conducting. The first part 2 has a peripheral surface 6, on which an abrasive coating 7 with a width 12 of approximately 5 mm is sintered. Vibrations and heat generated in the grinding insert can be dissipated via the first part 1. The first part 2 is connected via two contact surfaces 10 and 1 1 with the second part 3 in connection, wherein the rotation axis 5 is aligned substantially normal to the contact surface 10 and substantially parallel to the contact surface 1 1. In this case, the contact surface 10 is a multiple greater than the contact surface 1 1. About these contact surfaces 10 and 1 1, the vibrations are forwarded to the second part 3. This consists essentially of a vibration-damping material, such as cast iron with lamellar graphite or aluminum bronze or fiber-reinforced, preferably carbon fiber reinforced plastic. Due to the vibration damping properties of the second part 3, the vibrations transmitted by the first part 2 are damped. Overall, the grinding wheel 1 is formed asymmetrically with respect to an imaginary center plane normal to the axis of rotation 5. The second part 3 has a coupling region 4 for connecting the grinding wheel 1 to a rotary drive for rotating the grinding wheel 1 about an axis of rotation 5 extending through the coupling region 4. The coupling region 4 is formed as a central bore. The coupling region 4 is therefore formed directly in the vibration-damping material of the second part 3, so that the second part 3 acts as a hub.
Bei dem Zusammenbau der Schleifscheibe 1 wird der zweite Teil 3 mit einem in etwa zylinderförmigen Vorsprung 16 in eine korrespondierende Ausnehmung 14, welche im ersten Teil 2 vorgesehen ist, eingeführt und zwar so lange, bis die Teile 2 und 3 bündig aufeinander liegen. Anschließend werden die beiden Teile 2 und 3 fest miteinander verbunden. Beim dargestellten Ausführungsbeispiel handelt es sich um eine axiale Schraubverbindung, also eine Schraubverbindung parallel zur Drehachse 5. Zur Realisierung derselben sind im zweiten Teil 3 Ausnehmungen 9 angeordnet, in welche Gewindebuchsen 8 eingeklebt werden. Diese sind fluchtend mit Ausnehmungen 15, welche im ersten Teil 2 vorgesehen sind, angeordnet. In den Ausnehmungen 15 hat ein Schraubenkopf Platz. Nach dem Zusammenfügen der beiden Teile 2 und 3 können diese durch Schrauben 13 miteinander fest verbunden werden. When assembling the grinding wheel 1, the second part 3 is introduced with an approximately cylindrical projection 16 in a corresponding recess 14 which is provided in the first part 2, namely until the parts 2 and 3 are flush with each other. Subsequently, the two parts 2 and 3 are firmly connected. In the illustrated embodiment, it is an axial screw, so a screw parallel to the axis of rotation 5. To realize the same are arranged in the second part 3 recesses 9, in which threaded bushings 8 are glued. These are arranged in alignment with recesses 15, which are provided in the first part 2. In the recesses 15 a screw head has space. After joining the two parts 2 and 3, these can be firmly connected by screws 13 together.
Ist der am ersten Teil 2 angeordnete Schleifbelag 7 verbraucht, so kann der erste Teil 2 wieder entfernt und durch einen neuen ersten Teil 2 ersetzt werden, wobei der zweite Teil 3 wiederverwendet werden kann. Auch dies ist ein weiterer Vorteil des zweiteiligen Aufbaus des Trägerkörpers 2 und 3 im Vergleich zum Stand der Technik. If the abrasive coating 7 arranged on the first part 2 is used up, the first part 2 can be removed again and replaced by a new first part 2, wherein the second part 3 can be reused. This is another advantage of the two-part construction of the carrier body 2 and 3 compared to the prior art.
Die Anordnung der Ausnehmungen 9 und 15 in den beiden Teilen 2 und 3 stellt nur eine exemplarische Möglichkeit dar, wie eine Schraubverbindung realisierbar ist. Auch eine umgekehrte Anordnung ist möglich. Weiterhin kann, wie bereits ausgeführt, das Gewinde auch direkt in einen der beiden Teile 2 oder 3 geschnitten werden. Und schließlich können anstelle der Schraubverbindung auch andere Verbindungsarten - alternativ oder ergänzend - zum Einsatz kommen, wie beispielsweise eine Verklebung der beiden Teile 2 und 3. The arrangement of the recesses 9 and 15 in the two parts 2 and 3 represents only an exemplary possibility of how a screw connection can be realized. A reverse arrangement is possible. Furthermore, as already stated, the thread can also be cut directly into one of the two parts 2 or 3. Finally, other types of connection can be used instead of the screw connection-alternatively or additionally-such as, for example, bonding of the two parts 2 and 3.

Claims

Patentansprüche: claims:
1 . Schleifscheibe (1 ) mit einem Trägerkörper (2, 3), welcher einen zentralen Koppelbereich (4) zur Anbindung der Schleifscheibe (1 ) an einen Drehantrieb zum Drehen der Schleifscheibe (1 ) um eine durch den Koppelbereich (4) verlaufende Drehachse (5) und eine Umfangsfläche (6) aufweist, und mit einem Schleifbelag (7), welcher auf die Umfangsfläche (6) des Trägerkörpers (2, 3) aufgebracht, insbesondere aufgesintert, ist, dadurch gekennzeichnet, dass der Trägerkörper (2, 3) einen ersten Teil (2) und einen damit verbundenen zweiten Teil (3) umfasst, wobei der erste Teil (2) die Umfangsfläche (6) aufweist, und der zweite Teil (3) den Koppelbereich (4) aufweist und im Wesentlichen aus einem schwingungsdämpfenden Material besteht. 1 . Grinding wheel (1) having a carrier body (2, 3) which has a central coupling region (4) for connecting the grinding wheel (1) to a rotary drive for rotating the grinding wheel (1) about an axis of rotation (5) passing through the coupling region (4) and a peripheral surface (6), and with an abrasive coating (7), which on the peripheral surface (6) of the carrier body (2, 3) applied, in particular sintered, characterized in that the carrier body (2, 3) has a first Part (2) and an associated second part (3), wherein the first part (2) has the peripheral surface (6), and the second part (3) the coupling region (4) and consists essentially of a vibration damping material ,
2. Schleifscheibe (1 ) nach Anspruch 1 , wobei es sich bei dem schwingungsdämpfenden Material des zweiten Teils (3) um Gusseisen, vorzugsweise mit Lamellengraphit, Kugelgraphit, Vermikulargraphit, oder Stahlguss, und/oder um Aluminiumbronze, und/oder um faserverstärkten, vorzugsweise carbonfaserverstärkten, Kunststoff handelt. 2. Grinding wheel (1) according to claim 1, wherein the vibration-damping material of the second part (3) is cast iron, preferably with lamellar graphite, nodular graphite, vermicular graphite, or cast steel, and / or aluminum bronze, and / or fiber-reinforced, preferably carbon fiber reinforced plastic.
3. Schleifscheibe (1 ) nach Anspruch 1 oder 2, wobei der erste Teil (2) im Wesentlichen aus einem schwingungsleitenden und/oder wärmeleitenden Material, vorzugsweise Stahl oder Aluminium, besteht. 3. Grinding wheel (1) according to claim 1 or 2, wherein the first part (2) consists essentially of a vibration-conducting and / or heat-conducting material, preferably steel or aluminum.
4. Schleifscheibe (1 ) nach Anspruch 1 oder 2, wobei der erste Teil (2) im Wesentlichen aus einem faserverstärkten, vorzugsweise carbonfaserverstärkten, Kunststoff und der zweite Teil (3) im Wesentlichen aus Gusseisen besteht. 4. grinding wheel (1) according to claim 1 or 2, wherein the first part (2) consists essentially of a fiber-reinforced, preferably carbon fiber reinforced plastic and the second part (3) consists essentially of cast iron.
5. Schleifscheibe (1 ) nach einem der Ansprüche 1 bis 4, wobei der erste Teil (2) hochsteif ausgebildet ist und der zweite Teil (3) im Vergleich zum ersten Teil (2) eine geringere Steifigkeit aufweist. 5. grinding wheel (1) according to one of claims 1 to 4, wherein the first part (2) is highly rigid and the second part (3) compared to the first part (2) has a lower rigidity.
6. Schleifscheibe (1 ) nach einem der Ansprüche 1 bis 5, wobei der Schleifbelag (7) kontaktlos zum zweiten Teil (3) ausgebildet ist, so dass bei einem 6. grinding wheel (1) according to one of claims 1 to 5, wherein the abrasive coating (7) is formed contactlessly to the second part (3), so that at a
Schleifvorgang auftretende Schwingungen indirekt über den ersten Teil (2) auf den zweiten Teil (3) übertragbar und mittels des zweiten Teils (3) dämpfbar sind. Sanding occurring vibrations indirectly via the first part (2) on the second part (3) transferable and by means of the second part (3) are attenuatable.
7. Schleifscheibe (1 ) nach einem der Ansprüche 1 bis 6, wobei der erste Teil (2) und der zweite Teil (3) über eine, vorzugsweise axiale, Schraubverbindung (8, 13) miteinander verbunden sind, vorzugsweise wobei in dem ersten und/oder zweiten Teil (2, 3) Ausnehmungen (9) vorgesehen sind, in welche Gewindebuchsen (8) eingesetzt sind. 7. grinding wheel (1) according to one of claims 1 to 6, wherein the first part (2) and the second part (3) via a, preferably axial, screw connection (8, 13) are interconnected, preferably wherein in the first and / or second part (2, 3) recesses (9) are provided, in which threaded bushes (8) are inserted.
8. Schleifscheibe (1 ) nach einem der Ansprüche 1 bis 7, wobei der zweite Teil (3) ein ca. doppelt so großes Volumen wie der erste Teil (2) aufweist, und/oder der zweite Teil (3) im Vergleich zum ersten Teil (2) ein höheres Gewicht aufweist. 8. Grinding wheel (1) according to one of claims 1 to 7, wherein the second part (3) has an approximately twice as large volume as the first part (2), and / or the second part (3) compared to the first Part (2) has a higher weight.
9. Schleifscheibe (1 ) nach einem der Ansprüche 1 bis 8, wobei 9. grinding wheel (1) according to one of claims 1 to 8, wherein
- eine, vorzugsweise im Wesentlichen planare, Kontaktfläche (10) vorgesehen ist, über welche die beiden Teile (2, 3) miteinander in Kontakt stehen, und die Drehachse (5) im Wesentlichen normal zur Kontaktfläche (10) ausgerichtet ist, und/oder  - One, preferably substantially planar, contact surface (10) is provided, via which the two parts (2, 3) are in contact, and the axis of rotation (5) is aligned substantially normal to the contact surface (10), and / or
- eine Kontaktfläche (1 1 ) vorgesehen ist, über welche die beiden Teile (2, 3) miteinander in Kontakt stehen, und die Drehachse (5) im Wesentlichen parallel zur Kontaktfläche (1 1 ) ausgerichtet ist.  - A contact surface (1 1) is provided, via which the two parts (2, 3) are in contact, and the axis of rotation (5) is aligned substantially parallel to the contact surface (1 1).
10. Schleifscheibe (1 ) nach einem der Ansprüche 1 bis 9, wobei der erste Teil (2) ringförmig ausgebildet ist. 10. Grinding wheel (1) according to one of claims 1 to 9, wherein the first part (2) is annular.
1 1 . Schleifscheibe (1 ) nach einem der Ansprüche 1 bis 10, wobei die Schleifscheibe (1 ) in Bezug auf eine gedachte Mittelebene normal zur Drehachse (5) asymmetrisch ausgebildet ist. 1 1. Grinding wheel (1) according to one of claims 1 to 10, wherein the grinding wheel (1) is asymmetrical with respect to an imaginary center plane normal to the axis of rotation (5).
12. Schleifscheibe (1 ) nach einem der Ansprüche 1 bis 1 1 , wobei der Schleifbelag (7) eine Schnitteingriffsbreite (12) von ca. 5 mm aufweist. 12. Grinding wheel (1) according to one of claims 1 to 1 1, wherein the abrasive coating (7) has a cutting engagement width (12) of about 5 mm.
13. Schleifscheibe (1 ) nach einem der Ansprüche 1 bis 12, wobei der Koppelbereich (4) im schwingungsdämpfenden Material des zweiten Teils (3) ausgebildet ist, so dass das zweite Teil (3) als Nabe fungiert. 13. grinding wheel (1) according to one of claims 1 to 12, wherein the coupling region (4) in the vibration damping material of the second part (3) is formed, so that the second part (3) acts as a hub.
14. Schleifscheibe (1 ) nach einem der Ansprüche 1 bis 13, wobei der Koppelbereich (4) als Mittelbohrung ausgebildet ist. 14. grinding wheel (1) according to one of claims 1 to 13, wherein the coupling region (4) is formed as a central bore.
15. Schleifscheibe (1 ) nach einem der Ansprüche 1 bis 14, wobei 15. Grinding wheel (1) according to one of claims 1 to 14, wherein
- der Schleifbelag (7) ein Superschleifmittel aufweist, und/oder  - The abrasive coating (7) has a superabrasive, and / or
- der Schleifbelag (7) eine Bindung aus Metall, Kunststoff oder Keramik, oder eine galvanische Bindung, oder aus einer Kombination hiervon aufweist.  - The abrasive coating (7) has a bond made of metal, plastic or ceramic, or a galvanic bond, or a combination thereof.
EP17719985.8A 2016-05-13 2017-04-19 Grinding wheel with a vibration-damping support body Active EP3455031B1 (en)

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SI201730270T SI3455031T1 (en) 2016-05-13 2017-04-19 Grinding wheel with a vibration-damping support body
PL17719985T PL3455031T3 (en) 2016-05-13 2017-04-19 Grinding wheel with a vibration-damping support body

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ATA50447/2016A AT518247B1 (en) 2016-05-13 2016-05-13 grinding wheel
PCT/AT2017/060099 WO2017193147A1 (en) 2016-05-13 2017-04-19 Grinding wheel with a vibration-damping support body

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KR (1) KR102180895B1 (en)
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CN111823153A (en) * 2020-08-06 2020-10-27 平湖盛邦科技有限公司 Carbon fiber matrix composite structure grinding wheel and manufacturing method thereof

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AT518247A4 (en) 2017-09-15
JP7014776B2 (en) 2022-02-01
US11607777B2 (en) 2023-03-21
AT518247B1 (en) 2017-09-15
CN109153108B (en) 2021-04-27
WO2017193147A1 (en) 2017-11-16
ES2794786T3 (en) 2020-11-19
IL262609B (en) 2022-03-01
CN109153108A (en) 2019-01-04
JP2019514721A (en) 2019-06-06
SI3455031T1 (en) 2020-09-30
KR20180135067A (en) 2018-12-19
EP3455031B1 (en) 2020-03-11
IL262609A (en) 2019-02-28
KR102180895B1 (en) 2020-11-20
PL3455031T3 (en) 2020-08-24
US20190061108A1 (en) 2019-02-28

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