EP2403684B1 - Grinding pin - Google Patents
Grinding pin Download PDFInfo
- Publication number
- EP2403684B1 EP2403684B1 EP10705376.1A EP10705376A EP2403684B1 EP 2403684 B1 EP2403684 B1 EP 2403684B1 EP 10705376 A EP10705376 A EP 10705376A EP 2403684 B1 EP2403684 B1 EP 2403684B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base body
- abrasive particles
- grinding
- abrasive
- metal
- 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.)
- Revoked
Links
Images
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
- B24D5/02—Wheels in one piece
-
- 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
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
Definitions
- the invention relates to a method for producing a grinding pin for the machining of workpieces made of metal, in particular of cast metal, comprising a base body with an effective grinding on the outer surface grinding area for grinding the workpiece and having a shank for clamping the tool in the collet of a machine.
- Abrasive pins for abrasive machining ie for more or less rough grinding of different materials, are known per se.
- ceramic and synthetic resin-bonded grinding sticks are offered in different grain types, particle sizes and degrees of hardness.
- Grinding pins of different geometric shapes and with different shaft geometries are also used in mold making or in foundries, wherein the overall geometry of the grinding pin is adapted to the conditions on the workpiece to be machined. Usually, these tools are clamped by means of their shank in the collet of freehand machines or in stationary machines.
- the DE 94 18 876 U1 discloses a grinding pin for GRP machining. This has a shaft on the lateral surface of a diamond coating is applied. This is galvanically coated with a diamond grain and represents the actual working area of the tool.
- the DE 84 25 852 U1 relates to a grinding pin for dental purposes.
- a lateral surface is provided with an abrasive coating. It is a monolithic, arranged coaxially to the axis of the shaft and angularly pointed diamond used.
- the DE 1 961 195 U1 relates to a manicure or pedicure device with electric drive.
- a rotating pin is formed on its lateral surface so that you can use it to manipulate fingernails or toenails.
- the pin is rotationally symmetrical.
- the DE 39 18 606 A1 discloses a grinding tool with a carrier body, on the surface of which a grain layer is partially provided.
- This contains abrasive grains of a hard material, wherein the grains are connected by a binder to the carrier body.
- the abrasive grains interspersed with an active solder are first pressed into an annular compact. Subsequently, this compact is soldered onto the end face of the carrier body. The compression requires a complex pressing tool.
- the GB 1 462 510 discloses a method of attaching diamond crystals to a metallic substrate without compression.
- the diamond crystals are melted together with parts of a fused alloy on a metallic substrate and then the arrangement cooled down to secure the alloy together with the diamond particles firmly on the metallic substrate.
- the object of the present invention is now to propose an improved method for producing the grinding pins.
- the basic idea of the invention is to provide a main body made of metal for the grinding pins and to cover its surface with abrasive grains, this surface covering being held on the surface by cohesive joining.
- BSL brazed single layer
- the abrasive grains are held by soldering, in particular by melt soldering, on the outer shell of the body.
- the BSL method has proven particularly useful when used as abrasive grains industrial diamonds.
- cubic boron nitride (CBN) abrasive grains may also be used.
- the abrasive grain is not completely integrated into the metal matrix as with sintered or laser-welded abrasives.
- the diamond abrasive grains are instead clearly recognizable and correspondingly effective.
- the Grinding pins according to the invention are therefore of particularly open-loop structure.
- the grinding pins which have been processed according to the invention by means of BSL are distinguished by their special properties: a particularly outstanding feature is an increased service life of the grinding pins, which can be achieved due to the low wear and high cutting power. Compared to the known grinding pins life is many times higher. Another major advantage of the low wear is that the grinding pins can be used flexibly. Finally, it is not so much to be feared that the surfaces are worn unevenly by a non-flat edition.
- the grinding pins according to the invention are characterized by a high edge stability.
- the individual pin shapes such as approximated cylinders, cones, ellipsoids or combinations of these shapes, can thus be used more universally. Overall, these advantageous properties contribute to a high cost saving for the user. Depending on the grain size, the grinding pins can be used for roughing, finishing and fine grinding.
- the base body and the shaft are integrally formed from metal.
- the grinding pins according to the invention can be used for external grinding and internal grinding and for profile grinding, form grinding, surface grinding and cylindrical grinding.
- the sanding pins can be produced in different degrees of hardness and used for various materials.
- the straightness of hardness to be produced particularly advantageously lies in the range of the soft degree of hardness "K” and the hard degree of hardness "R” according to EN 12413.
- the degree of hardness "K” is particularly well suited for universal use on surfaces of cast materials. This includes the cleaning of gray and ductile iron castings, as well as the sanding of blowholes on gray and nodular cast iron parts.
- Abrasive pencils of hardness R are particularly suitable for robust use on edges of cast materials. They are characterized by high edge stability, a long service life and low tool wear. The peripheral speeds of the respective application and the respective hardness should be adjusted.
- a particular idea of the invention is to use the grinding pins for grinding workpieces made of cast metal, in particular cast steel, gray cast iron or ductile iron.
- the grinding pins can be clamped in a freehand machine or a stationary machine.
- the grinding pins are suitable for finishing grinding or fine grinding workpieces made of cast metal, in particular cast steel, gray cast iron or nodular cast iron. This particular suitability of the present invention with BSL grinding pads for these materials has surprisingly resulted from experiments.
- the application can be carried out by sprinkling the abrasive grains on the outer shell. If the geometry of the grinding area allows it, it is particularly easy to apply the abrasive grains by immersing the body in a bed of abrasive grains. In order to achieve special grinding properties and / or a particularly appealing design, the abrasive grains can be applied in a predetermined orientation, for example by means of a template, on the base body.
- the grinding area provided with fixed abrasive grains is covered with a slurry containing the solder required for the BSL, a viscous substance ("slurry").
- slurry refers to a substance in which the metallurgical binding matrix is mixed with in a suitable liquid.
- At least the grinding area provided with fixed abrasive grains is subjected to a galvanic process by immersing it with the grinding pin as a cathode in a galvanic bath. Under applied stress, metallic precipitate originating from the anode is deposited, including the abrasive grains on the metallic grinding area.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Schleifstifts für die Bearbeitung von Werkstücken aus Metall, insbesondere aus Metallguss, aufweisend einen Grundkörper mit einem am Außenmantel wirksamen Schleifbereich zur schleifenden Bearbeitung des Werkstücks und aufweisend einen Schaft zum Einspannen des Werkzeugs in die Spannzange einer Maschine.The invention relates to a method for producing a grinding pin for the machining of workpieces made of metal, in particular of cast metal, comprising a base body with an effective grinding on the outer surface grinding area for grinding the workpiece and having a shank for clamping the tool in the collet of a machine.
Schleifstifte zur abtragenden Bearbeitung, also zum mehr oder weniger groben Schleifen verschiedener Werkstoffe, sind an sich bekannt. Dabei werden keramisch und kunstharzgebundene Schleifstifte je nach Einsatzgebiet in verschiedenen Kornsorten, Korngrößen und Härtegraden angeboten. Schleifstifte unterschiedlicher geometrischer Formen und mit unterschiedlichen Schaftgeometrien werden auch im Formenbau oder in Gießereien verwendet, wobei die Gesamtgeometrie des Schleifstiftes an die Verhältnisse am zu bearbeitenden Werkstück angepasst wird. Üblicherweise werden diese Werkzeuge mittels ihres Schaftes in die Spannzange von Freihandmaschinen oder auch in stationären Maschinen eingespannt.Abrasive pins for abrasive machining, ie for more or less rough grinding of different materials, are known per se. Depending on the field of application, ceramic and synthetic resin-bonded grinding sticks are offered in different grain types, particle sizes and degrees of hardness. Grinding pins of different geometric shapes and with different shaft geometries are also used in mold making or in foundries, wherein the overall geometry of the grinding pin is adapted to the conditions on the workpiece to be machined. Usually, these tools are clamped by means of their shank in the collet of freehand machines or in stationary machines.
Nachteil der bekannten keramischgebundenen oder kunstharzgebundenen Schleifstifte ist ihre geringe Lebensdauer. So verschleisst der Arbeitsbereich in der Anwendung schnel. Wegen des hohen Verschleisses ist es auch notwendig, die Geometrie des Arbeitsbereiches so an das zu bearbeitende Werkstück anzupassen, dass der Abtrag mitberücksichtigt wird. Nur auf diese Weise kann gewährleistet werden, dass der Schleifstift trotz Verschleiss möglichst lange benutzt werden kann. Insgesamt führt der Verschleiss somit nicht nur zu hohen Kosten durch den starken Verbrauch an Schleifstiften, sondern auch dazu dass eine Vielzahl von Geometrien von Schleifstiften, nämlich idealerweise eine an die jeweilige Anwendung optimierte, vorgehalten werden muss.Disadvantage of the known ceramic-bonded or resin-bonded grinding pins is their low life. The workspace in the application quickly wears out. Because of the high wear, it is also necessary to adapt the geometry of the work area to the workpiece to be machined so that the removal is taken into account. Only in this way it can be ensured that the grinding pin can be used as long as possible despite wear. Overall, the wear thus not only leads to high Costs due to the heavy consumption of grinding pins, but also that a variety of geometries of grinding pins, namely ideally optimized to the respective application, must be held.
Die
Die
Die
Die
Die
Die Aufgabe der vorliegenden Erfindung liegt nunmehr darin ein verbessertes Verfahren zur Fertigung der Schleifstifte vorzuschlagen.The object of the present invention is now to propose an improved method for producing the grinding pins.
Diese Aufgabe wird durch ein Verfahren nach Anspruch 1 gelöst. Vorteilhafte Ausführungsformen sind in den jeweiligen Unteransprüchen genannt.This object is achieved by a method according to claim 1. Advantageous embodiments are mentioned in the respective subclaims.
Der Grundgedanke der Erfindung liegt darin, für die Schleifstifte einen Grundkörper aus Metall vorzusehen und dessen Oberfläche mit Schleifkörnern zu belegen, wobei dieser flächenmäßige Belag durch stoffschlüssiges Fügen auf der Oberfläche gehalten ist.The basic idea of the invention is to provide a main body made of metal for the grinding pins and to cover its surface with abrasive grains, this surface covering being held on the surface by cohesive joining.
Erfindungsgemäß wird für das stoffschlüssige Fügen das Verfahren des sogenannten "brazed single layer" (BSL) herangezogen. Durch dieses Verfahren werden die Schleifkörner durch ein Löten, insbesondere durch Schmelzlöten, auf dem Außenmantel des Grundkörpers gehalten. Dabei hat sich das BSL-Verfahren ganz besonders bewährt, wenn als Schleifkörner Industriediamanten verwendet werden. Es können jedoch auch Schleifkörner aus kubischem Bornitrid (CBN) zum Einsatz kommen.According to the method of the so-called "brazed single layer" (BSL) is used for the cohesive joining. By this method, the abrasive grains are held by soldering, in particular by melt soldering, on the outer shell of the body. Here, the BSL method has proven particularly useful when used as abrasive grains industrial diamonds. However, cubic boron nitride (CBN) abrasive grains may also be used.
Dabei ist es ganz generell eine Besonderheit der Erfindung, dass das Schleifkorn nicht wie bei gesinterten oder lasergeschweißten Schleifmitteln komplett in die Metallmatrix eingebunden ist. Die Diamantschleifkörner sind statt dessen deutlich erkennbar und entsprechend wirkungsvoll. Die erfindungsgemäßen Schleifstifte sind daher von besonders schleifoffener Struktur.It is quite a special feature of the invention that the abrasive grain is not completely integrated into the metal matrix as with sintered or laser-welded abrasives. The diamond abrasive grains are instead clearly recognizable and correspondingly effective. The Grinding pins according to the invention are therefore of particularly open-loop structure.
Das BSL Verfahren ist bislang nur von der Herstellung von Trennscheiben bekannt, deren Rand beidseitig mit Diamantschleifkörpern belegt wird. Wegen ihrer ausgezeichneten trennenden Eigenschaften werden diese Trennscheiben vorwiegend für die Bearbeitung von Werkstoffen aus Stein verwendet. Zudem werden sie als "Rescue-Disc" eingesetzt, um im Notfall Menschen aus Autos oder Häusern zu befreien.So far, the BSL process has only been known for the production of cutting discs whose edges are covered on both sides with diamond grinding bodies. Because of their excellent separating properties, these cutting discs are mainly used for processing stone materials. In addition, they are used as a "rescue disc" to rescue people from cars or houses in an emergency.
Die erfindungsgemäß mittels BSL bearbeiteten Schleifstifte zeichnen sich durch ihre besonderen Eigenschaften aus: Als besonders herausragende Eigenschaft ist eine erhöhte Lebensdauer der Schleifstifte zu nennen, die wegen des geringen Verschleisses bei gleichzeitig hoher Zerspannung erreicht werden kann. Im Vergleich zu den bekannten Schleifstiften ist die Lebensdauer ein Vielfaches höher. Ein weiterer wesentlicher Vorteil des geringen Verschleißes ist, dass die Schleifstifte flexibler eingesetzt werden können. Schließlich steht nicht so sehr zu befürchten, dass die Oberflächen durch eine nicht flächige Auflage ungleichmäßig abgenutzt werden. Die erfindungsgemäßen Schleifstifte zeichnen sich durch eine hohe Kantenstabilität aus. Die einzelnen Stiftformen, beispielsweise angenäherte Zylinder, Kegel, Ellipsoide oder Kombinationen dieser Formen, können somit universeller eingesetzt werden. Diese vorteilhaften Eigenschaften tragen insgesamt zu einer hohen Kostenersparnis für den Nutzer bei. Je nach Körnung lassen sich die Schleifstifte zum Schrupp-, Schlicht- und Feinschleifen einsetzen.The grinding pins which have been processed according to the invention by means of BSL are distinguished by their special properties: a particularly outstanding feature is an increased service life of the grinding pins, which can be achieved due to the low wear and high cutting power. Compared to the known grinding pins life is many times higher. Another major advantage of the low wear is that the grinding pins can be used flexibly. Finally, it is not so much to be feared that the surfaces are worn unevenly by a non-flat edition. The grinding pins according to the invention are characterized by a high edge stability. The individual pin shapes, such as approximated cylinders, cones, ellipsoids or combinations of these shapes, can thus be used more universally. Overall, these advantageous properties contribute to a high cost saving for the user. Depending on the grain size, the grinding pins can be used for roughing, finishing and fine grinding.
Neben der deutlich höheren Standzeit liegt ein weiterer Vorteil der erfindungsgemäß hergestellten Schleifstifte gegenüber bekannten Schleifstiften in ihrer geringeren Temperaturbelastung, die zur Schonung des zu bearbeitenden Werkstückes beiträgt. In einer hinsichtlich der Stabilität und der Wärmeabfuhr besonders vorteilhaften Ausführungsform sind der Grundkörper und der Schaft einstückig aus Metall ausgebildet.In addition to the significantly longer service life, another advantage of the inventive grinding pins compared to known grinding pins is their lower temperature load, which contributes to the protection of the workpiece to be machined. In a particularly advantageous embodiment in terms of stability and heat dissipation, the base body and the shaft are integrally formed from metal.
Wegen ihrer vorteilhaften Eigenschaften lassen sich die erfindungsgemäß hergestellten Schleifstifte zum Außenschleifen und zum Innenschleifen sowie zum Profilschleifen, Formschleifen, Planschleifen und Rundschleifen einsetzen. Die Schleifstifte können je nach Art der Fügemasse, insbesondere des beim BSL verwendeten Schlickers, der für die Bindung verantwortlich ist, in verschiedenen Härtegraden hergestellt werden und für verschiedene Werkstoffe eingesetzt werden. Besonders vorteilhaft herzustellende Härtegerade liegen im Bereich des weichen Härtegrad "K" und des harten Härtegrad "R" nach EN 12413. Dabei ist der Härtegrad "K" besonders gut geeignet für den universellen Einsatz an Flächen von Gusswerkstoffen. Dazu zählt das Putzen von Gussteilen aus Grau- und Sphäroguss, sowie das Ausschleifen von Lunkern an Grau- und Sphärogussteilen. Schleifstifte der Härte R sind besonders geeignet für robusten Einsatz an Kanten von Gusswerkstoffen. Sie zeichnen sich durch eine hohe Kantenstabilität, eine lange Standzeit und einen geringen Werkzeugverschleiß aus. Dabei sind die Umfangsgeschwindigkeiten der jeweiligen Anwendung und der jeweiligen Härte anzupassen.Because of their advantageous properties, the grinding pins according to the invention can be used for external grinding and internal grinding and for profile grinding, form grinding, surface grinding and cylindrical grinding. Depending on the type of bonding compound, in particular the slip used in the BSL, which is responsible for the bonding, the sanding pins can be produced in different degrees of hardness and used for various materials. The straightness of hardness to be produced particularly advantageously lies in the range of the soft degree of hardness "K" and the hard degree of hardness "R" according to EN 12413. The degree of hardness "K" is particularly well suited for universal use on surfaces of cast materials. This includes the cleaning of gray and ductile iron castings, as well as the sanding of blowholes on gray and nodular cast iron parts. Abrasive pencils of hardness R are particularly suitable for robust use on edges of cast materials. They are characterized by high edge stability, a long service life and low tool wear. The peripheral speeds of the respective application and the respective hardness should be adjusted.
Insofern liegt auch ein besonderer Gedanke der Erfindung darin, die Schleifstifte zum Schleifen von Werkstücken aus Metallguss, insbesondere aus Stahlguss, Grauguss oder Sphäroguss einzusetzen. Dabei können die Schleifstifte in eine Freihandmaschine oder eine stationäre Maschine eingespannt werden. Auch im Falle dieser Materialien eignen sich die Schleifstifte zum Schlichtschleifen oder zum Feinschleifen von Werkstücken aus Metallguss, insbesondere Stahlguss, Grauguss oder Sphäroguss. Diese besondere Eignung der erfindungsgemäß mit BSL belegten Schleifstifte für diese Materialien hat sich erstaunlicherweise aus Versuchen ergeben.In this respect, a particular idea of the invention is to use the grinding pins for grinding workpieces made of cast metal, in particular cast steel, gray cast iron or ductile iron. The grinding pins can be clamped in a freehand machine or a stationary machine. Also in the case of these materials, the grinding pins are suitable for finishing grinding or fine grinding workpieces made of cast metal, in particular cast steel, gray cast iron or nodular cast iron. This particular suitability of the present invention with BSL grinding pads for these materials has surprisingly resulted from experiments.
Das erfindungsgemäße Verfahren bedient sich der folgenden Schritte:
- Zunächst wird der rotationssymmetrische metallische Grundkörper zumindest im Schleifbereich mit einem Haftmittel, das als Haftvermittler oder Kleber dient, versehen. Nachfolgend werden auf den mit Haftmittel versehenen Außenmantel im Schleifbereich trockene Schleifkörner, insbesondere Diamantschleif- oder CBN-Körner, aufgebracht, die auf der Oberfläche durch das Haftmittel fixiert werden.
- First, the rotationally symmetrical metallic base body is at least in the grinding area with an adhesive that serves as a primer or adhesive provided. Subsequently, on the provided with adhesive outer shell in the grinding dry abrasive grains, in particular diamond grinding or CBN grains applied, which are fixed on the surface by the adhesive.
Das Aufbringen kann dadurch erfolgen, dass die Schleifkörner auf den Außenmantel aufgestreut werden. Wenn es die Geometrie des Schleifbereiches zulässt, ist es besonders einfach die Schleifkörner durch entsprechend tiefes Eintauchen des Grundkörpers in eine Schüttung von Schleifkörnern aufzubringen. Um besondere Schleifeigenschaften und/oder um ein besonders ansprechendes Design zu erreichen, können die Schleifkörner in einer vorgegebenen Orientierung beispielsweise mittels einer Schablone, auf dem Grundkörper aufgebracht werden.The application can be carried out by sprinkling the abrasive grains on the outer shell. If the geometry of the grinding area allows it, it is particularly easy to apply the abrasive grains by immersing the body in a bed of abrasive grains. In order to achieve special grinding properties and / or a particularly appealing design, the abrasive grains can be applied in a predetermined orientation, for example by means of a template, on the base body.
In einem weiteren Schritt wird der mit fixierten Schleifkörnern versehene Schleifbereich mit einem das für das BSL erforderlichen Lot enthaltenden Schlicker, einem zähflüssigen Stoff ("Slurry"), überdeckt. "Slurry" bezeichnet einen Stoff, bei dem die metallurgische Bindematrix mit in einer geeigneten Flüssigkeit gemischt ist. Nachfolgend, insbesondere nach einer ersten Trocknung bei Raumbedingungen, wird der so vorbereitete Grundkörper in einem Ofen erhitzt, um das "Löten" in Gang zu setzen. Vorteilhafterweise wird der Grundkörper in dem Ofen ohne Druck gesintert. Nun sind die Diamantschleifkörner durch die metallurgische Bindung fest mit dem metallischen Grundkörper an der Kontaktfläche verbunden.In a further step, the grinding area provided with fixed abrasive grains is covered with a slurry containing the solder required for the BSL, a viscous substance ("slurry"). "Slurry" refers to a substance in which the metallurgical binding matrix is mixed with in a suitable liquid. Subsequently, especially after a first drying under ambient conditions, the base body thus prepared is heated in an oven to initiate the "soldering" process. Advantageously, the base body is sintered in the furnace without pressure. Now the diamond abrasive grains are firmly connected by the metallurgical bond with the metallic body at the contact surface.
Im Falle der Galvanisierung wird zumindest der mit fixierten Schleifkörnern versehene Schleifbereich einem galvanischen Prozess unterzogen, indem dieser mit dem Schleifstift als Kathode in ein galvanisches Bad getaucht wird. Unter anliegender Spannung wird von der Anode stammender metallischer Niederschlag unter Einschluss der Schleifkörner auf dem metallischen Schleifbereich abgeschieden.In the case of galvanization, at least the grinding area provided with fixed abrasive grains is subjected to a galvanic process by immersing it with the grinding pin as a cathode in a galvanic bath. Under applied stress, metallic precipitate originating from the anode is deposited, including the abrasive grains on the metallic grinding area.
In der Figur sind einige vorteilhafte Geometrien der Schleifstifte dargestellt: Dabei lassen sich diese Geometrien in unterschiedlichen Abmessungen herstellen. Diese reichen von Durchmessern und Höhen weniger Millimeter bis hin zu Dimensionierungen im Bereich von einigen Zentimetern. Als Geometrien bieten sich die abgebildeten Formen nach der EN 12413 an. Zu nennen sind a) der Zylinderstift, b) der Walzenrundstift, c) der Walzenkegelstift, d) der Kegelstift, e) der Spitzbogenstift, f) der Kugelstift und g) der Topstift. In diesen Fällen können die kompletten Oberflächen der Grundkörper 1 mit Schleifkörnern versehen (punktierte Fläche), während der Schaft 2 natürlich frei bleibt. Grundkörper 1 und Schaft 2 sind einstückig ausgebildet.In the figure, some advantageous geometries of the grinding pins are shown: These geometries can be produced in different dimensions. These range from diameters and heights of a few millimeters to dimensions in the range of a few centimeters. When Geometries are presented in the forms shown in EN 12413. To call are a) the cylindrical pin, b) the roll round pin, c) the roller cone pin, d) the taper pin, e) the pointed bow pin, f) the ball pin and g) the top pin. In these cases, the entire surfaces of the base body 1 can be provided with abrasive grains (dotted area), while the shaft 2 remains naturally free. Base body 1 and shaft 2 are integrally formed.
Claims (10)
- A method for producing an abrasive point for machining work pieces made of metal, particularly of cast metal,
wherein the abrasive point features a base body with a grinding region that is effective on the outer surface in order to grind the work piece and a shaft for clamping the tool in the collet chuck of a machine,
wherein the base body is made of metal, and wherein the outer surface of the base body is provided with abrasive particles that are held on the outer surface in a adhesively bonded fashion,
characterized in
that the base body of metal is provided with an adhesive agent in the grinding region,
that abrasive particles, particularly abrasive diamond or CBN particles, are applied and fixed on the outer surface provided with the adhesive agent,
that the grinding region provided with fixed abrasive particles is subjected to a process that produces an adhesive firm bond between the abrasive particles and the outer surface, and
that the grinding region provided with fixed abrasive particles is covered with dross containing the brazing metal and the base body is heated in a furnace. - The method according to Claim 1,
characterized in
that the abrasive particles are held on the outer surface by means of brazing, particularly by means of fusion brazing. - The method according to one of the preceding claims,
characterized in
that the abrasive particles consist of diamond or CBN particles. - The method according to one of the preceding claims,
characterized in
that the abrasive particles are applied on the outer surface in the form of a layer by means of a BSL ("brazed single layer") process. - The method according to one of the preceding claims,
characterized in
that the base body has a spherical or conical or cylindrical shape or a combination of these shapes. - The method according to one of the preceding claims,
characterized in
that the base body and the shaft are realized in one piece. - The method according to one of the preceding claims,
characterized in
that the base body is sintered in a furnace. - The method according to one of the preceding claims,
characterized in
that the abrasive particles are applied on the outer surface by means of a scattering process. - The method according to one of the preceding claims,
characterized in
that the abrasive particles are applied by immersing the base body in a loose bulk: - The method according to one of the preceding claims,
characterized in
that the abrasive particles are applied on the base body in a predefined orientation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910011493 DE102009011493A1 (en) | 2009-03-06 | 2009-03-06 | grinding |
| PCT/EP2010/052415 WO2010100073A1 (en) | 2009-03-06 | 2010-02-25 | Abrasive point |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2403684A1 EP2403684A1 (en) | 2012-01-11 |
| EP2403684B1 true EP2403684B1 (en) | 2014-04-23 |
Family
ID=42235322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10705376.1A Revoked EP2403684B1 (en) | 2009-03-06 | 2010-02-25 | Grinding pin |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2403684B1 (en) |
| DE (1) | DE102009011493A1 (en) |
| WO (1) | WO2010100073A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013167666A2 (en) * | 2012-05-09 | 2013-11-14 | The Blade Saver Company Limited | A safety razor blade sharpening device and assembly |
| DE102013218233A1 (en) * | 2013-05-02 | 2014-11-06 | Bayerische Motoren Werke Aktiengesellschaft | Rotating grinding tool |
| CN113714899A (en) * | 2021-08-23 | 2021-11-30 | 重庆市恒牛机械制造有限公司 | Brake pump shell, manufacturing method and production equipment thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1462510A (en) * | 1973-08-14 | 1977-01-26 | Abrasive Tech Inc | Method of making abrasive tools |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB901835A (en) * | 1960-05-27 | 1962-07-25 | Carborundum Co | Method and means for dressing grinding wheels |
| DE1961195U (en) | 1966-04-29 | 1967-06-01 | Interelectric Ag | MANICURE OR PEDICURE DEVICE. |
| PL121916B1 (en) * | 1979-08-25 | 1982-06-30 | Przemyslu Narzedziowego Vis K | Method of manufacturing abrasive tools with a metallic galvanic bindereskim gal'vanicheskim vjazhuhhim |
| DE8425852U1 (en) | 1984-09-01 | 1984-11-22 | Grob-Impetus AG, Neuhausen | GRINDING PEN FOR DENTAL PURPOSES |
| DE3638085A1 (en) * | 1986-11-07 | 1988-05-19 | Ex Cell O Gmbh | Method and tool for dressing an abrasive pencil |
| CH675386A5 (en) * | 1988-07-27 | 1990-09-28 | Alexander Beck | |
| DE3912681A1 (en) * | 1989-04-18 | 1990-10-25 | Winter & Sohn Ernst | METHOD FOR GALVANIC COATING OF SEGMENT SURFACES ARRANGED ON THE SURFACE OF A BASIC BODY AND PRODUCTS PRODUCED AFTER THAT |
| DE3937182A1 (en) * | 1989-11-08 | 1991-05-16 | Bosch Gmbh Robert | METHOD FOR MACHINING THE SURFACE OF PLANM COMMUTATORS |
| DE4215525C2 (en) * | 1992-05-12 | 1995-01-12 | Kapp Werkzeugmasch | Method of making an abrasive tool |
| DE9418876U1 (en) | 1994-11-24 | 1996-01-18 | Reinhausen Maschf Scheubeck | Grinding point for GRP processing |
| US5855314A (en) * | 1997-03-07 | 1999-01-05 | Norton Company | Abrasive tool containing coated superabrasive grain |
| US6039641A (en) * | 1997-04-04 | 2000-03-21 | Sung; Chien-Min | Brazed diamond tools by infiltration |
| US5997597A (en) * | 1998-02-24 | 1999-12-07 | Norton Company | Abrasive tool with knurled surface |
| DE102006017664A1 (en) * | 2006-04-12 | 2007-10-18 | Volkswagen Ag | CAD/CAM process to fabricate master press tool for automotive body panel finished by spring-applied polishing tool and diamond paste |
-
2009
- 2009-03-06 DE DE200910011493 patent/DE102009011493A1/en not_active Withdrawn
-
2010
- 2010-02-25 EP EP10705376.1A patent/EP2403684B1/en not_active Revoked
- 2010-02-25 WO PCT/EP2010/052415 patent/WO2010100073A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1462510A (en) * | 1973-08-14 | 1977-01-26 | Abrasive Tech Inc | Method of making abrasive tools |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2403684A1 (en) | 2012-01-11 |
| WO2010100073A1 (en) | 2010-09-10 |
| DE102009011493A1 (en) | 2010-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE112005001119B4 (en) | Truing blade for machining abrasive tools and method for making a truing blade | |
| USRE35812E (en) | Bonded abrasive grit structure | |
| DE2523501A1 (en) | METHOD OF MANUFACTURING A GRINDING TOOL FOR GRINDING AND POLISHING | |
| CN200942489Y (en) | Superhard material flat arc grinding wheel | |
| DE3918606C2 (en) | Grinding tool and process for its manufacture | |
| CN112677061B (en) | Brazing diamond grinding disc for steel grinding and preparation method thereof | |
| EP2403684B1 (en) | Grinding pin | |
| CN108818329B (en) | Diamond grinding wheel and preparation method thereof | |
| KR100407227B1 (en) | Composite bond wheel and wheel having resin bonding phase | |
| JPS62205203A (en) | Production of ultrafine short metallic fiber | |
| CN205736556U (en) | diamond graver | |
| DE102010025677A1 (en) | dressing tool | |
| DE102009030484A1 (en) | Segment cutting wheel | |
| AT400543B (en) | METAL BONDED ABRASIVE TOOL WITH FILLER | |
| JP4624011B2 (en) | Lap wheel abrasive layer structure | |
| JP3411233B2 (en) | Manufacturing method of grinding tool | |
| JP3226632B2 (en) | Manufacturing method of axial grinding tool blank with superabrasive layer | |
| CN108527177A (en) | A kind of CBN grinding tools and preparation method thereof | |
| KR100959022B1 (en) | Cutter?wheel and method of manufacturing the same | |
| US20230294244A1 (en) | Method for producing a green body and method for further processing the green body to form a machining segment | |
| US20230364742A1 (en) | Abrasive articles and methods of forming | |
| JP4399049B2 (en) | Diamond dresser and manufacturing method thereof | |
| JP2001105328A (en) | Super-abrasive grinding wheel for high-speed grinding | |
| DE102007028496B3 (en) | Tool-production method for manufacturing a chip-removing/machining tool produces a tool with a hard-material element with a raw geometric shape varying from a preset final shape | |
| KR100407196B1 (en) | Grinding wheel for the hand grinder and coupling method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20110720 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20130417 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20140114 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 663510 Country of ref document: AT Kind code of ref document: T Effective date: 20140515 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502010006735 Country of ref document: DE Effective date: 20140605 |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20140423 |
|
| REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140724 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140723 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140823 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140723 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140825 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R026 Ref document number: 502010006735 Country of ref document: DE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 |
|
| PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
| PLAX | Notice of opposition and request to file observation + time limit sent |
Free format text: ORIGINAL CODE: EPIDOSNOBS2 |
|
| 26 | Opposition filed |
Opponent name: LUKAS-ERZETT VEREINIGTE SCHLEIF- UND FRAESWERKZEUG Effective date: 20150123 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R026 Ref document number: 502010006735 Country of ref document: DE Effective date: 20150123 |
|
| PLAF | Information modified related to communication of a notice of opposition and request to file observations + time limit |
Free format text: ORIGINAL CODE: EPIDOSCOBS2 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150228 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 |
|
| PLAF | Information modified related to communication of a notice of opposition and request to file observations + time limit |
Free format text: ORIGINAL CODE: EPIDOSCOBS2 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150225 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20150225 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150228 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150228 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 |
|
| PLBB | Reply of patent proprietor to notice(s) of opposition received |
Free format text: ORIGINAL CODE: EPIDOSNOBS3 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20151030 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150225 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150225 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150225 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150302 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 663510 Country of ref document: AT Kind code of ref document: T Effective date: 20150225 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20160226 Year of fee payment: 7 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150225 |
|
| RDAF | Communication despatched that patent is revoked |
Free format text: ORIGINAL CODE: EPIDOSNREV1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R064 Ref document number: 502010006735 Country of ref document: DE Ref country code: DE Ref legal event code: R103 Ref document number: 502010006735 Country of ref document: DE |
|
| RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
| 27W | Patent revoked |
Effective date: 20170102 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20100225 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MA03 Ref document number: 663510 Country of ref document: AT Kind code of ref document: T Effective date: 20170102 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140423 |