EP2913152A1 - Cup polishing wheel and production of a cup polishing wheel - Google Patents
Cup polishing wheel and production of a cup polishing wheel Download PDFInfo
- Publication number
- EP2913152A1 EP2913152A1 EP15000503.1A EP15000503A EP2913152A1 EP 2913152 A1 EP2913152 A1 EP 2913152A1 EP 15000503 A EP15000503 A EP 15000503A EP 2913152 A1 EP2913152 A1 EP 2913152A1
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- EP
- European Patent Office
- Prior art keywords
- cup
- carrier
- grinding
- grinding wheel
- wheel according
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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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/16—Bushings; Mountings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/02—Wheels in one piece
Definitions
- cup wheels are already part of the prior art and are for example in the DE 25 48 28 1 C2 and the DE 26 14 743 A1 shown.
- Cup wheels are used to grind metals, e.g. during tool grinding. These include e.g. Machining techniques such as grooving, chamfering, finishing of drills and tools, etc.
- a cup grinding wheel consists essentially of a carrier (grinding cup) and a grinding body in ring form, which identifies or forms grinding surfaces on its surface. The abrasive surfaces are provided with superabrasives such as CBN or diamond, which are bonded together in a metal and / or synthetic resin bond.
- the abrasive article is first made by placing the binder and superabrasives in a mold and then hot pressed. After this hot pressing process, the annular abrasive article is removed from the mold and placed in another shape.
- This further, second form is designed so that it specifies the geometry of the carrier (cupping cup).
- the binding powder (binder) for the carrier in the form of metal powder, synthetic resin, metal-resin mixture, etc. is filled and then hot-pressed.
- the cup grinding wheel is ready after forming.
- the grinding cup has a support geometry in the area of the grinding wheel in the inside. This support geometry, often designed as a ring, fixes and supports the abrasive body on the carrier. This support ring must be machined according to the wear of the slip ring (such as by turning in a lathe).
- a driven device such as a lathe
- an independent plastic support ring is inserted behind the grinding body.
- the grinding wheel and pot are made separately and then glued together. This is the case, for example, if the abrasive body can not be pushed over a ring formed by the carrier due to its shape.
- the support ring is subsequently, after the bonding of abrasive article on the cup, by casting a plastic, such as epoxy resin, produced, including an additional mold is needed.
- This production variant also has significant disadvantages:
- the grinding body and the cup are made separately from each other in their own form. Additional steps, such as the réelleverguss by an epoxy resin to create the support ring and a gluing of the abrasive article on the carrier, form an increased effort for themselves.
- a bonding agent (primer) must be applied to the adhesive surfaces before bonding the abrasive article to the carrier pretreat. Otherwise, a sufficient adhesive bond can not be ensured.
- they must be pretreated, for example by sandblasting and degreasing, with an agent such as acetone and coated with an adhesion promoter (primer).
- the object of the invention is to avoid the disadvantages described above and to provide a comparison with the prior art improved cup grinding wheel or a method for producing such a cup grinding wheel.
- the grinding body is substantially completely formed as a cone ring.
- a design as a cone ring requires less material for the construction of the grinding wheel, less mass must be set in motion when putting the grinding wheel into operation.
- the abrasive body forms a ring-shaped connection region, it can be fastened to a carrier via this annular region of connection.
- the cup-shaped carrier has an annular receiving surface at its front edge region, it can receive the connection region of the grinding body on this receiving surface.
- a fusion between the materials of the abrasive article and the carrier being effected during the hot pressing process.
- a support ring can be dispensed with.
- the compound is much stronger than a compound which is made by gluing or the like.
- the inner grinding surface on the inside of the abrasive body is not covered by the cup-shaped carrier and thus the inner side is usable as réelleschleif Chemistry, then this cup grinding wheel allows a wider range of processing options. Furthermore, in the case of wear of the abrasive body of the support ring, not by, for example, a lathe, be deducted.
- an upper die punch body and an abrasive die die are inserted into the die ring and pressure is applied to the abrasive body material between the dies. This ensures that the material for the abrasive body solidifies and this preformed in its position waiting to be in the next Steps to be connected to the vehicle. A removal of the grinding wheel is not necessary.
- a hot forming step when the abrasive die die is removed and replaced with a backing by a bolt, thereby introducing the material for the cup-shaped carrier, with the preformed abrasive body remaining in place in the die, labor is saved and the risk of forming the die is minimized Slip ring of the slip ring is damaged.
- a carrier upper punch is inserted into the upper die stamp and carrier upper punch are pressed together with the Abrasive Oberst Zi against the carrier lower punch, wherein the abrasive body is hot pressed with the cup-shaped carrier. Due to the common hot pressing of the carrier and the grinding wheel, a mixing of the materials in the carrier and in the grinding wheel is produced. In this case, a compound is produced which has no dividing line. Due to this very good connection, it is not necessary to incorporate a support ring. It is also not necessary that the carrier itself forms a support ring that supports the abrasive article.
- the cup-shaped carrier is made of a metallic material
- the abrasive body comprises metallic binder and the cup-shaped carrier made of a plastic, preferably synthetic resin .Wird, when the abrasive article has a synthetic resin as a binder.
- synthetic resin is used as a binder in the carrier, a filler such as preferably metal powder is incorporated. This ensures that a connection of the materials between the carrier and abrasive body can take place without a dividing line.
- Protection is also desired for a method of making a cup grinding wheel comprising a cup-shaped carrier and an annular abrasive article.
- the FIG. 1a shows an abrasive article 3.
- the abrasive article 3 made of super abrasive grain and a binder preferably has four faces. At the end faces of the annular grinding body 3 is ever a connection region 5 and a Stirnschleif Chemistry 4b. On the outside, the grinding wheel 3 forms an outer grinding surface 4a. The inner side 7 of the grinding wheel 3 forms the inner grinding surface 4c.
- the FIG. 1b shows a pot-shaped carrier 2.
- the carrier 2 is, depending on which material of the grinding wheel 3 (in the FIG. 1b not apparent) is essentially entirely made of metal or plastic.
- the common ones Variant represents a combination of plastic and metal, as it also in the detail view X, Fig. 2b , it can be seen.
- the cup-shaped carrier 2 forms the receiving surface 6 on one of its end faces.
- the carrier 2 has an opening which is located in the bottom of the carrier 2. This is not apparent in this representation 1 b, since it is covered by the jacket of the carrier 2. About this receiving opening 17 (in the FIG. 2a not apparent, in the FIGS. 5a and 5b ), the cup grinding wheel 1 is clamped on a grinding device.
- FIG. 2a shows an abrasive body 3 attached to the carrier 2.
- the grinding body 3 was fused with its connection region 5 with the annular receiving surface 6 of the carrier 2.
- Die Schleifanalysis 3 Sind an dem Schleifscale 3 bequest.
- the grinding surfaces 4a, 4b, 4c are retained. Only the connection area 5 is lost by the attachment to the carrier 2 and can not be used as a grinding surface.
- the detail X from the FIG. 2a will be in the FIG. 2b explained in more detail.
- FIG. 2b shows a detail view X from the FIG. 2a shown schematically.
- the detailed view X shows that the material of the abrasive article 3 has mixed with the material of the carrier 2.
- the binder 23 may be both of metallic origin or made of synthetic resin. It would also be conceivable to have a mixture of both.
- an abrasive article 3 having a resin bond as the binder 23 is used on a support 2 with a mixed resin or metal-synthetic resin mixture.
- a metal powder for the carrier 2 is used for a grinding body 3 with a metal bond as a binder 23, a metal powder for the carrier 2 is used.
- FIG. 3 schematically shows a manufacturing process, called preforming step, in which the grinding body 3 is preformed in a mold consisting of a press ring 13, a pad lower punch 12 and a top cover stamp 11.
- preforming step a manufacturing process, called preforming step, in which the grinding body 3 is preformed in a mold consisting of a press ring 13, a pad lower punch 12 and a top cover stamp 11.
- the mixture of binder 23 and superabrasive agent 22 is filled into the region between covering upper punch 11, pad lower punch 12 and pressing ring 13.
- the material located there is solidified under pressure. No additional temperature is added.
- FIG. 4 shows how the pad undercurrent 12 has been replaced by the carrier lower punch 14.
- the already preformed abrasive body 3 also remains in the exchange of the punches 14, 15 and 16 in its position.
- the carrier upper punch 15 is introduced after the filling of the material for the carrier 2.
- the in the FIG. 4 not apparent opening 17, which is then provided for receiving the cup wheel 1 on a grinding device is formed by the bolt 16.
- the carrier 2 is formed during the hot-forming step by the interaction of lining upper punch 11, carrier upper punch 15, carrier lower punch 14, pin 16 and press ring 13 and simultaneously fused with the grinding wheel 3.
- the abrasive body 3 does not have to be removed from the mold between the steps - thus there is no risk of breakage during the shaping of the slip ring 3. Due to the joint pressing during the hot forming step, there is an optimized connection between the grinding body 3 and the carrier 2, so that a support ring 20 (in FIG. 4 not shown) can be omitted. Under the microscope, a fusion of the material between the grinding wheel 3 and 2 carrier is visible and therefore also detectable. In the manufacturing process by adhesive bonding and in a standard production with two separate hot forming steps is below the Microscope to establish a clear interface between the grinding wheel 3 and 2 carrier.
- FIG. 5a shows a cup grinding wheel 1 with a support ring 20.
- the support ring 20 is formed by the carrier 2.
- the support 2 supports the abrasive body 3. If the abrasive body 3 is worn on its face grinding surface 4b, then the support ring 20 would have to be displaced to the rear by being twisted off by means of a lathe or another device.
- FIG. 5b shows the cup grinding wheel 1 according to the invention. It is apparent that no disturbing support ring 20 is attached to the grinding wheel 3 or the carrier 2. This results in three grinding surfaces - the outer grinding surface 4a, the Stirnschleif Chemistry 4b and the inner grinding surface 4c. These three grinding surfaces can be used to machine a workpiece. If the cup grinding wheel 1 has to be pulled off at its frontal grinding surface 4b, no support ring 20 has to be reworked.
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- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Topfschleifscheibe (1), umfassend: einen topfförmigen Träger (2), einen ringförmigen Schleifkörper (3), wobei der Schleifkörper (3) durch einen einzigen Heißpressvorgang mit dem Träger (2) verbunden ist, wobei der Schleifkörper (3) einen ringflächigen Anbindungsbereich (5) ausbildet und wobei der Schleifkörper (3) nur durch den ringflächigen Anbindungsbereich (5) mit der ringförmigen Aufnahmefläche (6) des Trägers (2) verbunden ist.Cup grinding wheel (1), comprising: a pot-shaped carrier (2), an annular grinding body (3), wherein the grinding body (3) is connected to the carrier (2) by a single hot pressing operation, the grinding body (3) having a ring-shaped attachment region ( 5) and wherein the grinding body (3) is connected to the annular receiving surface (6) of the carrier (2) only by the annular area (5).
Description
Die Erfindung betrifft eine Topfschleifscheibe, umfassend:
- einen topfförmigen Träger
- einen ringförmigen Schleifkörper,
- a cup-shaped carrier
- an annular abrasive body,
Weiters soll ein Verfahren zur Herstellung der erfindungsgemäßen Topfscheibe angegeben werden.Furthermore, a method for producing the cup wheel according to the invention should be specified.
Derartige Topfscheiben zählen bereits zum Stand der Technik und werden beispielsweise in der
Topfschleifscheiben werden zum Schleifen von Metallen, wie z.B. beim Werkzeugschleifen, verwendet. Dazu gehören z.B. Bearbeitungstechniken wie Nutenschliff, Fasen-Schliff, Endbearbeitung von Bohrern und Werkzeugen, etc. Eine Topfschleifscheibe besteht im Wesentlichen aus einem Träger (Schleiftopf) und einem Schleifkörper in Ringform, der an seiner Oberfläche Schleifflächen ausweist oder ausbildet. Die Schleifflächen sind mit Superschleifmitteln wie beispielsweise CBN oder Diamant versehen, welche in einer Metall- und/oder Kunstharzbindung aneinandergebunden sind.Cup wheels are used to grind metals, e.g. during tool grinding. These include e.g. Machining techniques such as grooving, chamfering, finishing of drills and tools, etc. A cup grinding wheel consists essentially of a carrier (grinding cup) and a grinding body in ring form, which identifies or forms grinding surfaces on its surface. The abrasive surfaces are provided with superabrasives such as CBN or diamond, which are bonded together in a metal and / or synthetic resin bond.
Es gibt mehrere Möglichkeiten der Herstellung einer Standardtopfscheibe, bei welchen zuerst der Schleifkörper hergestellt wird, indem das Bindemittel und die Superschleifmittel in eine Form eingefüllt und anschließend heiß gepresst werden. Nach diesem Heißpressvorgang wird der ringförmige Schleifkörper aus der Form entnommen und in eine weitere Form eingelegt. Diese weitere, zweite Form ist so ausgeführt, dass sie die Geometrie des Trägers (Schleiftopf) vorgibt. In diese zweite Form wird das Bindungspulver (Bindemittel) für den Träger in Form von Metallpulver, Kunstharz, Metall-Kunstharzmischung, etc. eingefüllt und dann heiß gepresst. Es werden zwei Heißpressvorgänge benötigt. Die Topfschleifscheibe ist nach dem Ausformen fertig. Der Schleiftopf hat in der Innenseite eine Stützgeometrie im Bereich des Schleifkörpers. Diese Stützgeometrie, oft als Ring ausgeführt, fixiert und unterstützt den Schleifkörper am Träger. Dieser Stützring muss entsprechend dem Verschleiß des Schleifringes zerspanend (wie z.B. durch Abdrehen in einer Drehbank) zurückgesetzt werden.There are several ways of making a standard pot, in which the abrasive article is first made by placing the binder and superabrasives in a mold and then hot pressed. After this hot pressing process, the annular abrasive article is removed from the mold and placed in another shape. This further, second form is designed so that it specifies the geometry of the carrier (cupping cup). In this second form, the binding powder (binder) for the carrier in the form of metal powder, synthetic resin, metal-resin mixture, etc. is filled and then hot-pressed. There are two hot pressing operations needed. The cup grinding wheel is ready after forming. The grinding cup has a support geometry in the area of the grinding wheel in the inside. This support geometry, often designed as a ring, fixes and supports the abrasive body on the carrier. This support ring must be machined according to the wear of the slip ring (such as by turning in a lathe).
Nachteil dieses Herstellungsprozesses ist es, dass zwei Heißpressvorgänge angewendet werden müssen. Weiters kann der Schleifring beim Ausformen aus der ersten Form beschädigt werden. Nach dem Ausformen aus der ersten Form müssen Sinterkanten und Verunreinigungen am Schleifring entfernt werden.Disadvantage of this manufacturing process is that two hot pressing operations must be used. Furthermore, the slip ring can be damaged during molding from the first mold. After forming from the first mold, sintered edges and impurities on the slip ring must be removed.
Ein weiterer Nachteil, der nichts mit dem Herstellungsprozess, sondern mit der Anwendung der Scheibe zu tun hat, ist der, dass beim Zurücksetzen der Stützkante durch eine Abtriebvorrichtung, wie eine Drehbank ein Arbeits- bzw. Zeitaufwand entsteht. In einer weiteren Herstellungsvariante wird ein eigenständiger Stützring aus Kunststoff hinter den Schleifkörper eingesetzt. Dabei werden Schleifkörper und -topf getrennt voneinander hergestellt und im Anschluss miteinander verklebt. Dies ist zum Beispiel dann der Fall, wenn der Schleifkörper aufgrund seiner Form nicht über einen durch den Träger ausgeformten Ring übergeschoben werden kann. Der Stützring wird im Anschluss, nach der Verklebung von Schleifkörper auf Schleiftopf, durch Gießen eines Kunststoffes, wie beispielsweise Epoxidharz, erzeugt, wozu eine zusätzliche Form benötigt wird.Another disadvantage that has nothing to do with the manufacturing process, but with the application of the disc, is that when resetting the support edge by a driven device, such as a lathe, a work or time required. In a further manufacturing variant, an independent plastic support ring is inserted behind the grinding body. Here, the grinding wheel and pot are made separately and then glued together. This is the case, for example, if the abrasive body can not be pushed over a ring formed by the carrier due to its shape. The support ring is subsequently, after the bonding of abrasive article on the cup, by casting a plastic, such as epoxy resin, produced, including an additional mold is needed.
Auch diese Herstellungsvariante trägt wesentliche Nachteile mit sich: Es werden der Schleifkörper und der Schleiftopf getrennt voneinander in jeweils einer eigenen Form hergestellt. Zusätzliche Arbeitsschritte, wie der Innenverguss durch ein Epoxidharz zur Schaffung des Stützringes und ein Verkleben des Schleifkörpers am Träger, bilden für sich einen erhöhten Aufwand. Weiters muss vor dem Verkleben des Schleifkörpers am Träger ein Haftvermittler (Primer) an den Klebeflächen aufgetragen werden, um diese vorzubehandeln. Ansonsten kann eine ausreichende Klebeverbindung nicht sichergestellt werden. Bevor die zu verbindenden Flächen des Schleifkörpers und des Topfes miteinander verklebt werden, müssen diese z.B. durch Sandstrahlen und Entfetten mit einem Mittel, wie beispielsweise Aceton vorbehandelt und mit einem Haftvermittler (Primer) beschichtet werden.This production variant also has significant disadvantages: The grinding body and the cup are made separately from each other in their own form. Additional steps, such as the Innenverguss by an epoxy resin to create the support ring and a gluing of the abrasive article on the carrier, form an increased effort for themselves. Furthermore, a bonding agent (primer) must be applied to the adhesive surfaces before bonding the abrasive article to the carrier pretreat. Otherwise, a sufficient adhesive bond can not be ensured. Before the surfaces to be joined of the abrasive article and the pot are glued together, they must be pretreated, for example by sandblasting and degreasing, with an agent such as acetone and coated with an adhesion promoter (primer).
Aufgabe der Erfindung ist es, die vorbeschriebenen Nachteile zu vermeiden und eine gegenüber dem Stand der Technik verbesserte Topfschleifscheibe bzw. ein Verfahren zur Herstellung einer solchen Topfschleifscheibe anzugeben.The object of the invention is to avoid the disadvantages described above and to provide a comparison with the prior art improved cup grinding wheel or a method for producing such a cup grinding wheel.
Dies wird bei der erfindungsgemäßen Topfschleifscheibe dadurch erreicht, dass der Schleifkörper nur durch den ringflächigen Anbindungsbereich mit der ringförmigen Aufnahmefläche des Trägers verbunden ist.This is achieved in the cup grinding wheel according to the invention in that the grinding body is connected to the annular receiving surface of the carrier only by the annular area of connection.
Gemäß einem weiteren Ausführungsbeispiel kann es vorgesehen sein, dass der Schleifkörper im Wesentlichen vollständig als Konusring ausgeformt ist. Durch eine Ausführung als Konusring wird weniger Material für den Aufbau des Schleifkörpers benötigt, weniger Masse muss bei der Inbetriebnahme der Schleifscheibe in Bewegung gesetzt werden.According to a further embodiment it can be provided that the grinding body is substantially completely formed as a cone ring. A design as a cone ring requires less material for the construction of the grinding wheel, less mass must be set in motion when putting the grinding wheel into operation.
Wenn der Schleifkörper einen ringflächigen Anbindungsbereich ausbildet, so kann dieser über diesen ringflächigen Anbindungsbereich an einem Träger befestigt werden.If the abrasive body forms a ring-shaped connection region, it can be fastened to a carrier via this annular region of connection.
Als besonders vorteilhaft hat es sich dabei herausgestellt, dass, wenn der topfförmige Träger an seinem stirnseitigen Randbereich eine ringförmige Aufnahmefläche aufweist, er an dieser Aufnahmefläche den Anbindungsbereich des Schleifkörpers aufnehmen kann.It has proved to be particularly advantageous here that if the cup-shaped carrier has an annular receiving surface at its front edge region, it can receive the connection region of the grinding body on this receiving surface.
Gemäß einem weiteren Ausführungsbeispiel kann es vorgesehen sein, dass nach der Verbindung des Schleifkörpers mit dem Träger im Übergangsbereich keine Trennschicht zwischen Schleifkörper und Träger ersichtlich ist, wobei beim Heißpressvorgang eine Verschmelzung zwischen den Materialien des Schleifkörpers und des Trägers erfolgt ist. Dadurch entsteht eine starke Verbindung zwischen Schleifkörper und Träger, auf einen Stützring kann verzichtet werden. Die Verbindung ist wesentlich stärker als eine Verbindung, welche durch eine Verklebung oder dergleichen erfolgt.According to a further embodiment, it may be provided that after the connection of the grinding body with the carrier in the transition region no release layer between the abrasive article and the carrier can be seen, a fusion between the materials of the abrasive article and the carrier being effected during the hot pressing process. This creates a strong connection between the grinding wheel and the carrier, a support ring can be dispensed with. The compound is much stronger than a compound which is made by gluing or the like.
Wenn die Innenschleiffläche an der Innenseite des Schleifkörpers nicht durch den topfförmigen Träger verdeckt ist und somit auch die Innenseite als Innenschleiffläche nutzbar ist, dann ermöglicht diese Topfschleifscheibe ein größeres Spektrum an Bearbeitungsmöglichkeiten. Weiters muss im Falle vom Verschleiß des Schleifkörpers der Stützring nicht, durch beispielsweise eine Drehbank, abgezogen werden.If the inner grinding surface on the inside of the abrasive body is not covered by the cup-shaped carrier and thus the inner side is usable as Innenschleiffläche, then this cup grinding wheel allows a wider range of processing options. Furthermore, in the case of wear of the abrasive body of the support ring, not by, for example, a lathe, be deducted.
Gemäß einem weiteren Ausführungsbeispiel kann vorgesehen sein, dass kein Stützring zur Befestigung des Schleifkörpers am Träger notwendig ist und somit auch die Innenseite als Innenschleiffläche nutzbar ist. Somit erweitert sich das Spektrum an Bearbeitungsmöglichkeiten, welche durch die Topfschleifscheibe ermöglicht werden.According to a further embodiment it can be provided that no support ring is necessary for fastening the abrasive article to the carrier and thus also the inside can be used as an internal grinding surface. Thus, the range of processing options, which are made possible by the cup grinding wheel.
Wenn beim Vorformen des Schleifkörpers keine zusätzliche Temperatur zugeführt wird und nur das Verpressen mit dem topfförmigen Träger unter Einwirkung von Hitze erfolgt, werden weitere Arbeitsschritte eingespart und Energiekosten reduziert.If no additional temperature is supplied during preforming of the abrasive body and only pressing with the cup-shaped carrier takes place under the action of heat, further work steps are saved and energy costs are reduced.
Gemäß einem weiteren Ausführungsbeispiel kann vorgesehen sein, dass zum Formen des Schleifkörpers im Vorformschritt ein Schleifkörperoberstempel und ein Schleifkörperunterstempel in den Pressring eingeführt werden und Druck auf das zwischen den Stempeln liegende Material für den Schleifkörper ausgeübt wird. So wird erreicht, dass sich das Material für den Schleifkörper verfestigt und dieser vorgeformt in seiner Position wartet, um in den nächsten Schritten mit dem Träger verbunden zu werden. Eine Entnahme des Schleifkörpers ist nicht notwendig.According to a further embodiment, it can be provided that, for forming the abrasive body in the preforming step, an upper die punch body and an abrasive die die are inserted into the die ring and pressure is applied to the abrasive body material between the dies. This ensures that the material for the abrasive body solidifies and this preformed in its position waiting to be in the next Steps to be connected to the vehicle. A removal of the grinding wheel is not necessary.
Wenn in einem Heißformschritt der Schleifkörperunterstempel entfernt und durch einen Trägerunterstempel mit einem Bolzen ersetzt wird und dabei das Material für den topfförmigen Träger eingebracht wird, wobei der vorgeformte Schleifkörper in seiner Lage im Pressling verharrt, wird Arbeitszeit eingespart und das Risiko minimiert, dass beim Ausformen des Schleifrings der Schleifring beschädigt wird.In a hot forming step, when the abrasive die die is removed and replaced with a backing by a bolt, thereby introducing the material for the cup-shaped carrier, with the preformed abrasive body remaining in place in the die, labor is saved and the risk of forming the die is minimized Slip ring of the slip ring is damaged.
Gemäß einer weiteren Ausführungsbeispiels kann es vorgesehen sein, dass im Heißformschritt ein Trägeroberstempel in den Schleifkörperoberstempel eingeführt wird und Trägeroberstempel zusammen mit dem Schleifkörperoberstempel gegen den Trägerunterstempel gepresst werden, wobei der Schleifkörper mit dem topfförmigen Träger heißverpresst wird. Durch das gemeinsame Heißverpressen von Träger und Schleifkörper entsteht eine Vermengung der Materialien im Träger und im Schleifkörper. Dabei wird eine Verbindung hergestellt, welche keine Trennlinie aufweist. Durch diese sehr gute Verbindung ist es nicht notwendig einen Stützring einzuarbeiten. Es ist auch nicht notwendig, dass der Träger selbst einen Stützring ausformt, der den Schleifkörper unterstützt.According to a further embodiment it can be provided that in the hot-forming step, a carrier upper punch is inserted into the upper die stamp and carrier upper punch are pressed together with the Abrasive Oberstempel against the carrier lower punch, wherein the abrasive body is hot pressed with the cup-shaped carrier. Due to the common hot pressing of the carrier and the grinding wheel, a mixing of the materials in the carrier and in the grinding wheel is produced. In this case, a compound is produced which has no dividing line. Due to this very good connection, it is not necessary to incorporate a support ring. It is also not necessary that the carrier itself forms a support ring that supports the abrasive article.
Als besonders vorteilhaft hat es sich dabei herausgestellt, wenn der topfförmige Träger aus einem metallischen Werkstoff gefertigt wird, wenn der Schleifkörper metallische Bindemittel aufweist und der topfförmige Träger aus einem Kunststoff, vorzugsweise Kunstharz gefertigt .wird, wenn der Schleifkörper ein Kunstharz als Bindemittel aufweist. Wird Kunstharz als Bindemittel im Träger verwendet, wird ein Füllstoff wie vorzugsweise Metallpulver beigemengt. Dadurch ist gewährleistet, dass eine Verbindung der Materialien zwischen Träger und Schleifkörper ohne eine Trennlinie stattfinden kann.It has proven to be particularly advantageous if the cup-shaped carrier is made of a metallic material, if the abrasive body comprises metallic binder and the cup-shaped carrier made of a plastic, preferably synthetic resin .Wird, when the abrasive article has a synthetic resin as a binder. When synthetic resin is used as a binder in the carrier, a filler such as preferably metal powder is incorporated. This ensures that a connection of the materials between the carrier and abrasive body can take place without a dividing line.
Schutz wird auch begehrt für ein Verfahren zur Herstellung einer Topfschleifscheibe, umfassend einen topfförmigen Träger und einen ringförmigen Schleifkörper.Protection is also desired for a method of making a cup grinding wheel comprising a cup-shaped carrier and an annular abrasive article.
Weitere Einzelheiten und Vorteile der vorliegenden Erfindung werden anhand der Figurenbeschreibungen unter Bezugnahme auf die in den Zeichnungen dargestellten Ausführungsbeispiele im Folgenden näher erläutert. Darin zeigt:
- Fig. 1a
- schematische Darstellung eines ringförmigen Schleifkörpers,
- Fig. 1b
- schematische Darstellung eines topfförmigen Trägers,
- Fig. 2a
- schematische Darstellung des am Träger befestigten Schleifkörpers,
- Fig. 2b
- schematische Darstellung Detail X,
- Fig. 3
- schematische Darstellung der beim Vorformprozess verwendeten Formen,
- Fig. 4
- schematische Darstellung der beim Heißpressvorgang verwendeten Formen,
- Fig. 5a
- schematische Schnittdarstellung einer Topfschleifscheibe mit Stützring und
- Fig. 5b
- schematische Schnittdarstellung einer Topfschleifscheibe ohne Stützring.
- Fig. 1a
- schematic representation of an annular abrasive body,
- Fig. 1b
- schematic representation of a cup-shaped carrier,
- Fig. 2a
- schematic representation of the abrasive body attached to the carrier,
- Fig. 2b
- schematic illustration detail X,
- Fig. 3
- schematic representation of the molds used in the preforming process,
- Fig. 4
- schematic representation of the molds used in the hot pressing process,
- Fig. 5a
- schematic sectional view of a cup grinding wheel with support ring and
- Fig. 5b
- schematic sectional view of a cup grinding wheel without support ring.
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Claims (13)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA142/2014A AT515475B1 (en) | 2014-02-28 | 2014-02-28 | Production of a cup wheel |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2913152A1 true EP2913152A1 (en) | 2015-09-02 |
Family
ID=52573581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15000503.1A Withdrawn EP2913152A1 (en) | 2014-02-28 | 2015-02-23 | Cup polishing wheel and production of a cup polishing wheel |
Country Status (6)
Country | Link |
---|---|
US (1) | US10016874B2 (en) |
EP (1) | EP2913152A1 (en) |
AT (1) | AT515475B1 (en) |
BR (1) | BR102015004265B1 (en) |
DE (1) | DE202015009441U1 (en) |
ES (1) | ES1206189Y (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108555783A (en) * | 2016-02-25 | 2018-09-21 | 泉州众志新材料科技有限公司 | A kind of preparation method of artificial stone chamfering wheel |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT17877U1 (en) * | 2018-03-12 | 2023-06-15 | Tyrolit Schleifmittelwerke Swarovski Ag & Co K G | Grinding tool for grinding an engine block |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB451641A (en) * | 1935-02-19 | 1936-08-10 | Norton Grinding Wheel Co Ltd | Methods of making abrasive wheels |
GB557194A (en) * | 1942-06-25 | 1943-11-09 | Ernest Douglas Teague | Improvements in abrasive tools |
US2469398A (en) * | 1946-04-12 | 1949-05-10 | Abrasive Dressing Tool Company | Abrasive wheel and method of making the same |
DE2614743A1 (en) * | 1975-04-07 | 1976-10-21 | Edenvale Eng Works | METHOD FOR MANUFACTURING ABRASIVE BODIES |
EP2119524A1 (en) * | 2008-05-15 | 2009-11-18 | Celsia S.P.A. | Bimetal electrode for erosion grinders and manufacturing method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2703437A (en) * | 1950-09-01 | 1955-03-08 | Frederick W Lindblad | Method of making abrasive articles |
US2942387A (en) * | 1958-03-03 | 1960-06-28 | Frederick W Lindblad | Cup-shaped diamond grinding wheel |
IE42010B1 (en) * | 1974-08-15 | 1980-05-21 | Edenvale Eng Works | Abrasive products |
DE2548281A1 (en) | 1975-10-28 | 1977-05-05 | Du Pont | Grinding elements - comprising carrier with porous polyimide support and resin-bonded grinding particles |
US6102789A (en) * | 1998-03-27 | 2000-08-15 | Norton Company | Abrasive tools |
-
2014
- 2014-02-28 AT ATA142/2014A patent/AT515475B1/en active
-
2015
- 2015-02-23 EP EP15000503.1A patent/EP2913152A1/en not_active Withdrawn
- 2015-02-23 DE DE202015009441.4U patent/DE202015009441U1/en active Active
- 2015-02-23 ES ES201830023U patent/ES1206189Y/en active Active
- 2015-02-26 US US14/632,190 patent/US10016874B2/en active Active
- 2015-02-26 BR BR102015004265-5A patent/BR102015004265B1/en active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB451641A (en) * | 1935-02-19 | 1936-08-10 | Norton Grinding Wheel Co Ltd | Methods of making abrasive wheels |
GB557194A (en) * | 1942-06-25 | 1943-11-09 | Ernest Douglas Teague | Improvements in abrasive tools |
US2469398A (en) * | 1946-04-12 | 1949-05-10 | Abrasive Dressing Tool Company | Abrasive wheel and method of making the same |
DE2614743A1 (en) * | 1975-04-07 | 1976-10-21 | Edenvale Eng Works | METHOD FOR MANUFACTURING ABRASIVE BODIES |
EP2119524A1 (en) * | 2008-05-15 | 2009-11-18 | Celsia S.P.A. | Bimetal electrode for erosion grinders and manufacturing method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108555783A (en) * | 2016-02-25 | 2018-09-21 | 泉州众志新材料科技有限公司 | A kind of preparation method of artificial stone chamfering wheel |
Also Published As
Publication number | Publication date |
---|---|
US20150246428A1 (en) | 2015-09-03 |
DE202015009441U1 (en) | 2017-08-16 |
ES1206189Y (en) | 2018-05-16 |
ES1206189U (en) | 2018-02-22 |
BR102015004265A2 (en) | 2016-02-02 |
AT515475A1 (en) | 2015-09-15 |
BR102015004265A8 (en) | 2021-09-08 |
BR102015004265B1 (en) | 2023-01-10 |
AT515475B1 (en) | 2016-04-15 |
US10016874B2 (en) | 2018-07-10 |
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