EP1201366B1 - Dressing of grinding wheels - Google Patents
Dressing of grinding wheels Download PDFInfo
- Publication number
- EP1201366B1 EP1201366B1 EP00122993A EP00122993A EP1201366B1 EP 1201366 B1 EP1201366 B1 EP 1201366B1 EP 00122993 A EP00122993 A EP 00122993A EP 00122993 A EP00122993 A EP 00122993A EP 1201366 B1 EP1201366 B1 EP 1201366B1
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- EP
- European Patent Office
- Prior art keywords
- conditioning device
- groove
- conditioning
- width
- grinding wheels
- 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.)
- Expired - Lifetime
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- 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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/12—Dressing tools; Holders therefor
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- 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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
- B24B53/065—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels having other than straight profiles, e.g. crowned
Definitions
- the invention relates to conditioning devices for grinding wheels for processing the edge regions of plate-shaped objects, such.
- the grinding wheels in the conditioned state at least each have a circumferential groove, at least in a partial region tapering to the grinding wheel center.
- rod-shaped conditioning devices which usually consist of a mineral or mineral constituent material whose abrasive action resets the bond of the grinding wheel to be conditioned.
- Usual components of the material are u. a. Aluminum oxide (corundum) and silicon carbide. The cross section is cuboid and the material properties are uniform throughout the conditioning.
- the conditioned grinding wheel has a circumferential groove which tapers towards the center of the grinding wheel and in particular has an approximately semicircular cross section.
- Conditioning is essentially understood as influencing the sharpness of the grinding wheel surface, including the groove surface, with the groove contour being kept as long as possible. Furthermore, the term “conditioning” also refers to the introduction or reworking of a groove shape worn down and worn or almost completely disappeared by many grinding operations.
- edge areas can both lead to a blunting of the affected grinding wheel surface, but it can also be a "Überschenfung" caused, which is also not desired. Both deviations from the normal sharpened desired state can be remedied by the conditioning.
- the conditioning by means of the aforementioned rod-shaped conditioning devices takes place in that the conditioning device is provided with a matched to the groove cross-section profile to be achieved and is brought into engagement with the rotating grinding wheel, wherein the distribution of the sharpening effect over the entire Nutform is uniform and thus either subsections are not sufficiently sharpened or other parts too sharply.
- the conditioning in particular profiling, in practice usually by sink eroding with an appropriately profiled electrode groove.
- the disadvantage here is that a complex and expensive erosion device is required for this work-up, so that the worn grinding wheels usually have to be returned to the manufacturer or another specialist for refurbishment. This is both time-consuming and cost-intensive, since at least one replacement grinding wheel has to be provided for the bridging of the time until the return of the externally processed grinding wheel. This can cause a rather expensive storage in several grinding machines and / or a number of different profiled grinding wheels.
- the object of the invention is to avoid the aforementioned disadvantages and a way to condition grinding wheels for processing the edge portions of plate-shaped objects such.
- the grinding wheels in the conditioned state at least each have a circumferential, at least in a partial region tapered groove center, indicate that allows conditioning of these grinding wheels easily and without expensive equipment anywhere and at any time.
- This is a homogeneous Sharpness achieved over the groove contour, and it can be both a profiling and a profile-preserving sharpness influence in a single operation without removing the grinding wheel.
- a rod-shaped conditioning device for the conditioning of grinding wheels for processing the edge regions of plate-shaped objects, such.
- the grinding wheels in the conditioned state at least one circumferential groove, at least in a partial region tapered groove center
- the conditioning is used so that the conditioning device has a tuned to the desired groove cross-section, wherein the Abtrag is dependent on the length in the loop-engaging length
- the width of the conditioning device substantially equal to the width of the groove (s) and the length profile from one side end to the other side end of the conditioner according to the depth profile from one side edge to the other side edge of the groove (s ) is formed with increasing length with increasing depth to be achieved.
- the above-described disadvantages are further avoided by the method for conditioning grinding wheels according to claims 2 to 13.
- the tracking can be done manually or mechanically, in particular automatically by spring force or controlled by motor drive.
- the rotating grinding wheel can be conditioned accordingly by contact with the rod-shaped conditioning device, wherein the grinding wheel can remain clamped even in the grinding device.
- the width of the conditioning device may be less than the groove, in which case only portions of the groove are conditioned.
- the width of the conditioning device can also be greater than the width of the groove, wherein the protruding areas are removed unused.
- the sharpening with as long as possible profile preservation and possibly also the profiling of the disc is done automatically by the specially trained cross section of the conditioning, since the removal is dependent on the length located in the loop engagement and the length of the conditioning corresponds to the depth profile of the groove.
- the conditioning device which are tapered and thus have a length of approximately zero, virtually no removal is effected, whereas the central regions of the conditioning device have a greater length and thus achieve greater removal, which corresponds to the corresponding groove depth causes this point.
- the width of the conditioning device substantially the width of the Groove (s) and the volume profile over the width of the conditioner according to the depth profile from one side edge to the other side edge of the groove (s) with increasing volume to be achieved with increasing depth to be achieved, so that by varying the number and size of embedded pores or especially as lateral grooves or the like formed free spaces a more or less strong conditioning takes place.
- the width of the conditioning device may correspond substantially to the width of the groove (s) and the abrasive properties of the conditioner material over the width of the conditioning device according to the depth profile from one side edge to the other side edge of the groove (s) with better abrasive properties as the condition increases be formed reaching depth.
- the width of the conditioning device can essentially correspond to the width of the groove (s) and the coordination of the particle size distribution with respect to the chip spaces of the grinding wheel over the width of the conditioning device according to the depth profile from one side edge to the other side edge of the groove (s) better coordination can be formed with increasing depth to be achieved, so that a stronger removal or a better sharpness influence of the deeper groove areas takes place.
- the conditioning device may be designed in particular rod-shaped and experienced during use with appropriate wear a translational feed in the direction of its longitudinal axis, but there are also other forms such.
- the cross-section of the conditioning device or the area of the conditioning device which is in engagement during the conditioning can be approximately triangular, so that a desired groove shape can be achieved with a geometrical shape that is easy to produce.
- the cross-section of the conditioning device or of the conditioning area of the conditioning device that is engaged during conditioning may also be approximately diamond-shaped, so that a less sharp cross-section results for the same length profile, which can be used for conditioning in the case of axisymmetric design without consideration of a processing device.
- the conditioning device can be composed of a multiplicity of subcomponents surrounded by a holding device, so that the contour of the conditioning device can be adjusted by arranging the subcomponents within or outside the engagement region during the conditioning device, and thus the contour of the groove to be achieved can be selected.
- a large number of different groove shapes and widths can be processed and conditioned with a single conditioning device.
- the partial components may consist of materials having different material properties, so that a further influence on the groove to be achieved by the conditioning device in the grinding wheel by means of the variation of the material of the sub-components is given.
- the conditioning device may consist of a mineral material having a hardness suitable for conditioning the grinding wheel and having a suitable abrasive action therefor.
- Fig. 1 shows a rod-shaped conditioning device 1, which is in engagement with a grinding wheel 2 to be conditioned.
- the grinding wheel 2 has a circumferential, tapering to the grinding wheel center groove 3, which preferably has an approximately semicircular cross-section.
- the grinding wheel 2 either consist entirely of a material suitable for machining abrasive material or the grinding wheel 2 may be made of a different material, such.
- As metal or the like, and in an encircling recess include an embedded circumferential ring of appropriate, especially mineral abrasive material.
- the rod-shaped conditioning device 1 In order to restore the profiling of the groove 3, to introduce another groove shape in the grinding wheel 2 or to change the sharpness of the groove 3, the rod-shaped conditioning device 1 is brought into engagement with the groove 3 with rotating grinding wheel 2.
- the outer regions having only a very short length carry virtually no material, whereas the material removal increases with increasing length of the cross-section of the conditioning device 1.
- the highest material removal in the middle of the groove 3 is effected by the center of the conditioning device 1 and achieved in the illustrated example, an approximately semicircular groove 3.
- the lowest edge of the rod-shaped conditioning device 1 during machining also has a profile corresponding to the groove cross-section.
- FIG. 2 shows the cross-section of a further rod-shaped conditioning device 1 according to the invention, in which both a longitudinal and a transverse symmetrical design with straight flanks is provided.
- Fig. 3 shows a further embodiment in which the cross-section is formed symmetrically only with respect to the longitudinal axis, as well as in the cross-section of FIG. 4.
- the conditioning 1 can be used both with forward pointed tip end, but also vice versa.
- the conditioning device 1 is composed of a plurality of sub-components 4, which are surrounded by a holding device 5 at least partially.
- Fig. 6 shows the article according to Fig. 5 in a perspective view.
- all or even only certain partial components 4 from the holding device 5 can be used protrude and thus be engaged during conditioning.
- both the overall cross section of the conditioning device 1 formed from the constituent parts 4 and the constituent parts 4 can have a wide variety of shapes.
- FIG. 7 shows a further embodiment of a conditioning device 1 according to the invention which is in engagement with a grinding wheel 2 to be conditioned.
- the conditioning device 1 has a semicircular disc-shaped form, which is formed by 180 ° rotation of an approximately trapezoidal cross-section about its wider edge on. When worn, the conditioning device 1 is tracked in the arrow direction.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
Die Erfindung betrifft Konditioniervorrichtungen für Schleifscheiben zur Bearbeitung der Kantenbereiche plattenförmiger Gegenstände, wie z. B. Glasscheiben oder dergleichen, wobei die Schleifscheiben in konditioniertem Zustand zumindest je eine umlaufende, sich zur Schleifscheibenmitte wenigstens in einem Teilbereich verjüngende Nut aufweisen.The invention relates to conditioning devices for grinding wheels for processing the edge regions of plate-shaped objects, such. As glass panes or the like, wherein the grinding wheels in the conditioned state, at least each have a circumferential groove, at least in a partial region tapering to the grinding wheel center.
Aus der Praxis sind derartige, üblicherweise stabförmige Konditioniervorrichtungen bekannt, die zumeist aus einem mineralischen oder mineralische Bestandteile aufweisenden Material bestehen, dessen abrasive Wirkung die Bindung der zu konditionierenden Schleifscheibe zurücksetzt. Übliche Bestandteile des Materials sind u. a. Aluminiumoxid (Korund) und Siliziumkarbid. Der Querschnitt ist dabei quaderförmig und die Materialeigenschaften sind in der gesamten Konditioniervorrichtung einheitlich.From the practice of such, usually rod-shaped conditioning devices are known, which usually consist of a mineral or mineral constituent material whose abrasive action resets the bond of the grinding wheel to be conditioned. Usual components of the material are u. a. Aluminum oxide (corundum) and silicon carbide. The cross section is cuboid and the material properties are uniform throughout the conditioning.
Dabei weist die konditionierte Schleifscheibe eine umlaufende Nut auf, die sich zur Schleifscheibenmitte hin verjüngt und insbesondere einen in etwa halbkreisförmigen Querschnitt hat.In this case, the conditioned grinding wheel has a circumferential groove which tapers towards the center of the grinding wheel and in particular has an approximately semicircular cross section.
Während der Schleifbearbeitung der Kantenbereiche plattenförmiger Gegenstände, wie z. B. dem Verrunden der Kanten von Glasscheiben für den Einsatz in Kraftfahrzeugen, wird einerseits die zu bearbeitende Kante in eine zumindest konvex gekrümmte Form gebracht, andererseits ist jedoch auch die Schleifscheibe selbst einer durch Verschleiß bedingten "Bearbeitung" durch die Kantenbereiche der Glasscheiben ausgesetzt, so dass sich die Nutkontur nach und nach der Kontur der unbearbeiteten Kantenbereiche der Glasscheiben annähert und dementsprechend durch die Konditionierung aufgearbeitet werden muss.During grinding of the edge portions of plate-shaped objects, such. As the rounding of the edges of glass sheets for use in motor vehicles, on the one hand brings the edge to be machined in an at least convex curved shape, on the other hand, however, the grinding wheel itself is subject to a conditional by wear "processing" through the edge portions of the glass panes, so that the groove contour gradually approaches the contour of the unprocessed edge regions of the glass sheets and accordingly must be worked up by the conditioning.
Unter Konditionierung wird im Wesentlichen die Beeinflussung der Schärfe der Schleifscheibenoberfläche einschließlich der Nutoberfläche verstanden, wobei die Nutkontur möglichst lange erhalten werden soll. Ferner wird unter Konditionierung auch das Einbringen oder Nacharbeiten einer durch viele Schleifvorgänge abgenutzten und verschlissenen bzw. fast vollständig verschwundenen Nutform verstanden.Conditioning is essentially understood as influencing the sharpness of the grinding wheel surface, including the groove surface, with the groove contour being kept as long as possible. Furthermore, the term "conditioning" also refers to the introduction or reworking of a groove shape worn down and worn or almost completely disappeared by many grinding operations.
Denn durch die Bearbeitung der Kantenbereiche kann es sowohl zu einer Abstumpfung der betroffenen Schleifscheibenfläche kommen, es kann jedoch auch eine "Überschärfung" verursacht werden, die ebenfalls nicht gewünscht ist. Beide Abweichungen vom normal geschärften Soll-Zustand können durch die Konditionierung behoben werden.Because the processing of the edge areas can both lead to a blunting of the affected grinding wheel surface, but it can also be a "Überärfung" caused, which is also not desired. Both deviations from the normal sharpened desired state can be remedied by the conditioning.
Das Konditionieren mittels der vorerwähnten stabförmigen Konditioniervorrichtungen erfolgt dabei dadurch, dass die Konditioniervorrichtung mit einer an den zu erzielenden Nutquerschnitt angepassten Profilierung versehen ist und mit der rotierenden Schleifscheibe in Eingriff gebracht wird, wobei die Verteilung der Schärfwirkung über die gesamte Nutform einheitlich ist und somit entweder Teilbereiche nicht in ausreichendem Maße oder andere Teilbereiche zu stark geschärft werden.The conditioning by means of the aforementioned rod-shaped conditioning devices takes place in that the conditioning device is provided with a matched to the groove cross-section profile to be achieved and is brought into engagement with the rotating grinding wheel, wherein the distribution of the sharpening effect over the entire Nutform is uniform and thus either subsections are not sufficiently sharpened or other parts too sharply.
Da sich die Kontur der Konditioniervorrichtung schnell der Kontur der Nut anpasst, und somit gerade keine Beeinflussung der Nut durch die Konditioniervorrichtung gegeben ist, erfolgt das Konditionieren, insbesondere das Profilieren, in der Praxis üblicherweise durch Senk-Erodieren mit einer der Nutform entsprechend profilierten Elektrode.Since the contour of the conditioning device quickly adapts to the contour of the groove, and therefore no influence on the groove is given by the conditioning, the conditioning, in particular profiling, in practice usually by sink eroding with an appropriately profiled electrode groove.
Nachteilig hierbei ist, dass für diese Aufarbeitung eine aufwendige und kostenintensive Erodier-Vorrichtung erforderlich ist, so dass die abgenutzten Schleifscheiben üblicherweise zum Aufarbeiten zum Hersteller oder einem anderen Spezialisten eingeschickt werden müssen. Dies ist sowohl zeit- als auch kostenintensiv, da für die Überbrückung der Zeit bis zum Rückerhalt der fremdaufgearbeiteten Schleifscheibe zumindest eine Ersatzschleifscheibe vorgehalten werden muss. Dies kann bei mehreren Schleifmaschinen und/oder einer Anzahl von verschiedenen profilierten Schleifscheiben eine recht aufwendige Lagerhaltung bedingen.The disadvantage here is that a complex and expensive erosion device is required for this work-up, so that the worn grinding wheels usually have to be returned to the manufacturer or another specialist for refurbishment. This is both time-consuming and cost-intensive, since at least one replacement grinding wheel has to be provided for the bridging of the time until the return of the externally processed grinding wheel. This can cause a rather expensive storage in several grinding machines and / or a number of different profiled grinding wheels.
Aufgabe der Erfindung ist es, die vorgenannten Nachteile zu vermeiden und eine Möglichkeit zur Konditionierung von Schleifscheiben zur Bearbeitung der Kantenbereiche plattenförmiger Gegenstände, wie z. B. Glasscheiben oder dergleichen, wobei die Schleifscheiben in konditioniertem Zustand zumindest je eine umlaufende, sich zur Schleifscheibenmitte wenigstens in einem Teilbereich verjüngende Nut aufweisen, anzugeben, die eine Konditionierung dieser Schleifscheiben leicht und ohne aufwendige Apparaturen überall und jederzeit ermöglicht. Dabei wird eine homogene Schärfe über der Nutkontur erzielt, und es kann sowohl eine Profilierung als auch eine profilerhaltende Schärfebeeinflussung in einem Arbeitsgang ohne Ausbau der Schleifscheibe erfolgen.The object of the invention is to avoid the aforementioned disadvantages and a way to condition grinding wheels for processing the edge portions of plate-shaped objects such. As glass panes or the like, wherein the grinding wheels in the conditioned state, at least each have a circumferential, at least in a partial region tapered groove center, indicate that allows conditioning of these grinding wheels easily and without expensive equipment anywhere and at any time. This is a homogeneous Sharpness achieved over the groove contour, and it can be both a profiling and a profile-preserving sharpness influence in a single operation without removing the grinding wheel.
Diese Aufgabe wird gelöst durch die Verwendung einer stabförmigen Konditioniervorrichtung zur Konditionierung von Schleifscheiben zur Bearbeitung der Kantenbereiche plattenförmiger Gegenstände, wie z. B. Glasscheiben oder dergleichen, wobei die Schleifscheiben in konditioniertem Zustand zumindest je eine umlaufende, sich zur Schleifscheibenmitte wenigstens in einem Teilbereich verjüngende Nut aufweisen, wobei die Konditioniervorrichtung so verwendet wird, dass die Konditioniervorrichtung einen auf den zu erzielenden Nutquerschnitt abgestimmten Querschnitt aufweist, wobei der Abtrag abhängig von der im Schleifeingriff befindlichen Länge ist, die Breite der Konditioniervorrichtung im Wesentlichen der Breite der Nut(en) entspricht und der Längenverlauf von einem seitlichen Ende zum anderen seitlichen Ende der Konditioniervorrichtung entsprechend dem Tiefenverlauf von einem Seitenrand zum anderen Seitenrand der Nut(en) mit wachsender Länge bei steigender zu erzielender Tiefe ausgebildet ist.This object is achieved by the use of a rod-shaped conditioning device for the conditioning of grinding wheels for processing the edge regions of plate-shaped objects, such. As glass sheets or the like, wherein the grinding wheels in the conditioned state, at least one circumferential groove, at least in a partial region tapered groove center, wherein the conditioning is used so that the conditioning device has a tuned to the desired groove cross-section, wherein the Abtrag is dependent on the length in the loop-engaging length, the width of the conditioning device substantially equal to the width of the groove (s) and the length profile from one side end to the other side end of the conditioner according to the depth profile from one side edge to the other side edge of the groove (s ) is formed with increasing length with increasing depth to be achieved.
Die eingangs erläuterten Nachteile werden weiterhin vermieden durch Verfahren zum Konditionieren von Schleifscheiben gemäß den Ansprüchen 2 bis 13. Dabei kann das Nachführen manuell oder maschinell, insbesondere automatisch per Federkraft oder gesteuert per motorischem Antrieb erfolgen.The above-described disadvantages are further avoided by the method for conditioning grinding wheels according to
Hierdurch kann die rotierende Schleifscheibe durch Kontakt mit der stabförmigen Konditioniervorrichtung entsprechend konditioniert werden, wobei die Schleifscheibe sogar in der Schleifvorrichtung eingespannt bleiben kann. Dabei kann auch die Breite der Konditioniervorrichtung geringer als die Nut sein, wobei dann lediglich Teilbereiche der Nut konditioniert werden. Die Breite der Konditioniervorrichtung kann aber auch größer als die Breite der Nut sein, wobei die überstehenden Bereiche ungenutzt abgetragen werden.In this way, the rotating grinding wheel can be conditioned accordingly by contact with the rod-shaped conditioning device, wherein the grinding wheel can remain clamped even in the grinding device. In this case, the width of the conditioning device may be less than the groove, in which case only portions of the groove are conditioned. However, the width of the conditioning device can also be greater than the width of the groove, wherein the protruding areas are removed unused.
Dabei erfolgt das Schärfen mit möglichst langer Profilerhaltung und gegebenenfalls auch die Profilierung der Scheibe automatisch durch den speziell ausgebildeten Querschnitt der Konditioniervorrichtung, da der Abtrag abhängig von der im Schleifeingriff befindlichen Länge ist und der Längenverlauf der Konditioniervorrichtung dem Tiefenverlauf der Nut entspricht. Somit wird an den äußersten Seitenrändern der Konditioniervorrichtung, die spitz zulaufen und somit eine Länge von annähernd Null aufweisen, so gut wie kein Abtrag bewirkt, wohingegen die mittleren Bereiche der Konditioniervorrichtung eine größere Länge aufweisen und somit einen stärkeren Abtrag erzielen, was die entsprechende Nuttiefe an dieser Stelle bewirkt.The sharpening with as long as possible profile preservation and possibly also the profiling of the disc is done automatically by the specially trained cross section of the conditioning, since the removal is dependent on the length located in the loop engagement and the length of the conditioning corresponds to the depth profile of the groove. Thus, at the outermost side edges of the conditioning device, which are tapered and thus have a length of approximately zero, virtually no removal is effected, whereas the central regions of the conditioning device have a greater length and thus achieve greater removal, which corresponds to the corresponding groove depth causes this point.
Für diesen Zweck kann erfindungsgemäß auch die Breite der Konditioniervorrichtung im Wesentlichen der Breite der Nut(en) entsprechen und der Volumenverlauf über der Breite der Konditioniervorrichtung entsprechend dem Tiefenverlauf von einem Seitenrand zum anderen Seitenrand der Nut(en) mit wachsendem Volumen bei steigender zu erzielender Tiefe ausgebildet sein, so dass durch Variation der Anzahl und Größe von eingebetteten Poren oder insbesondere als seitliche Nuten oder dergleichen ausgebildeten Freiräumen eine mehr oder weniger starke Konditionierung erfolgt.For this purpose, according to the invention, the width of the conditioning device substantially the width of the Groove (s) and the volume profile over the width of the conditioner according to the depth profile from one side edge to the other side edge of the groove (s) with increasing volume to be achieved with increasing depth to be achieved, so that by varying the number and size of embedded pores or especially as lateral grooves or the like formed free spaces a more or less strong conditioning takes place.
Ferner kann die Breite der Konditioniervorrichtung im Wesentlichen der Breite der Nut(en) entsprechen und die abrasiven Eigenschaften des Materials der Konditioniervorrichtung über der Breite der Konditioniervorrichtung entsprechend dem Tiefenverlauf von einem Seitenrand zum anderen Seitenrand der Nut(en) mit besseren abrasiven Eigenschaften bei steigender zu erzielender Tiefe ausgebildet sein.Furthermore, the width of the conditioning device may correspond substantially to the width of the groove (s) and the abrasive properties of the conditioner material over the width of the conditioning device according to the depth profile from one side edge to the other side edge of the groove (s) with better abrasive properties as the condition increases be formed reaching depth.
Weiterhin kann erfindungsgemäß auch die Breite der Konditioniervorrichtung im Wesentlichen der Breite der Nut(en) entsprechen und die Abstimmung der Korngrößenverteilung in Bezug auf die Spanräume der Schleifscheibe über der Breite der Konditioniervorrichtung entsprechend dem Tiefenverlauf von einem Seitenrand zum anderen Seitenrand der Nut(en) mit besserer Abstimmung bei steigender zu erzielender Tiefe ausgebildet sein, so dass ein stärkerer Abtrag oder eine bessere Schärfebeeinflussung der tieferen Nutbereichen erfolgt.Furthermore, according to the invention, the width of the conditioning device can essentially correspond to the width of the groove (s) and the coordination of the particle size distribution with respect to the chip spaces of the grinding wheel over the width of the conditioning device according to the depth profile from one side edge to the other side edge of the groove (s) better coordination can be formed with increasing depth to be achieved, so that a stronger removal or a better sharpness influence of the deeper groove areas takes place.
Dabei kann die Konditioniervorrichtung insbesondere stabförmig ausgebildet sein und während der Benutzung bei entsprechendem Verschleiß einen translatorischen Vorschub in Richtung ihrer Längsachse erfahren, es sind aber auch andere Formen, wie z. B. eine halbkreis-scheibenförmige Ausgestaltung oder dergleichen möglich, wobei der Querschnitt wie vorbeschrieben und entlang der Vorschubrichtung konstant ausgebildet ist.In this case, the conditioning device may be designed in particular rod-shaped and experienced during use with appropriate wear a translational feed in the direction of its longitudinal axis, but there are also other forms such. B. a semicircular disc-shaped configuration or the like possible, wherein the cross section as described above and is formed constant along the feed direction.
Vorzugsweise kann der Querschnitt der Konditioniervorrichtung bzw. des während der Konditionierung im Eingriff befindlichen Bereichs der Konditioniervorrichtung in etwa dreieckförmig ausgebildet sein, so dass mit einer einfach herzustellenden geometrischen Form eine wunschgemäße Nutform erzielbar ist.Preferably, the cross-section of the conditioning device or the area of the conditioning device which is in engagement during the conditioning can be approximately triangular, so that a desired groove shape can be achieved with a geometrical shape that is easy to produce.
Auch kann der Querschnitt der Konditioniervorrichtung bzw. des während der Konditionierung im Eingriff befindlichen Bereichs der Konditioniervorrichtung in etwa rautenförmig ausgebildet sein, so dass bei gleichem Längenverlauf ein weniger spitzer Querschnitt resultiert, der bei achsensymmetrischer Ausbildung ohne Beachtung einer Bearbeitungsvorrichtung zur Konditionierung eingesetzt werden kann.The cross-section of the conditioning device or of the conditioning area of the conditioning device that is engaged during conditioning may also be approximately diamond-shaped, so that a less sharp cross-section results for the same length profile, which can be used for conditioning in the case of axisymmetric design without consideration of a processing device.
Erfindungsgemäß kann sich die Konditioniervorrichtung aus einer Vielzahl an von einer Halteeinrichtung umgebenen Teilbestandteilen zusammensetzen, so dass durch Anordnung der Teilbestandteile innerhalb oder außerhalb des Eingriffsbereiches während der Konditioniervorrichtung die Kontur der Konditioniervorrichtung eingestellt und somit die Kontur der zu erzielenden Nut ausgewählt werden kann. Hierdurch kann mit einer einzigen Konditioniervorrichtung eine Vielzahl unterschiedlicher Nutformen und -breiten bearbeitet und konditioniert werden.According to the invention, the conditioning device can be composed of a multiplicity of subcomponents surrounded by a holding device, so that the contour of the conditioning device can be adjusted by arranging the subcomponents within or outside the engagement region during the conditioning device, and thus the contour of the groove to be achieved can be selected. As a result, a large number of different groove shapes and widths can be processed and conditioned with a single conditioning device.
Dabei können die Teilbestandteile aus Materialien mit unterschiedlichen Materialeigenschaften bestehen, so dass eine weitere Beeinflussung der durch die Konditioniervorrichtung zu erzielenden Nut in der Schleifscheibe mittels der Variation des Materials der Teilbestandteile gegeben ist.In this case, the partial components may consist of materials having different material properties, so that a further influence on the groove to be achieved by the conditioning device in the grinding wheel by means of the variation of the material of the sub-components is given.
Vorteilhafterweise kann die Konditioniervorrichtung aus einem mineralischen Material mit einer zur Konditionierung der Schleifscheibe geeigneten Härte bestehen und eine hierfür geeignete abrasive Wirkung besitzen.Advantageously, the conditioning device may consist of a mineral material having a hardness suitable for conditioning the grinding wheel and having a suitable abrasive action therefor.
Im Folgenden werden in der Zeichnung dargestellte Ausführungsbeispiele der Erfindung erläutert. Es zeigen:
- Fig. 1 eine perspektivische Darstellung einer erfindungsgemäßen Konditioniervorrichtung beim Einsatz an einer Schleifscheibe,
- Fig. 2 - 4 Querschnitte weiterer Ausführungsbeispiele erfindungsgemäßer Konditioniervorrichtungen,
- Fig. 5 den Querschnitt einer aus mehreren Teilbestandteilen bestehenden Konditioniervorrichtung,
- Fig. 6 den Gegenstand nach Fig. 5 in perspektivischer Darstellung und
- Fig. 7 eine perspektivische Darstellung einer weiteren erfindungsgemäßen Konditioniervorrichtung beim Einsatz an einer Schleifscheibe.
- 1 is a perspective view of a conditioning device according to the invention when used on a grinding wheel,
- 2 to 4 cross sections of further embodiments of conditioning devices according to the invention,
- 5 shows the cross section of a conditioning device consisting of several subcomponents,
- Fig. 6 shows the object according to Fig. 5 in a perspective view and
- Fig. 7 is a perspective view of another conditioning device according to the invention when used on a grinding wheel.
In allen Figuren werden für gleiche bzw. gleichartige Bauteile übereinstimmende Bezugszeichen verwendet.In all figures the same reference numerals are used for identical or similar components.
Fig. 1 zeigt eine stabförmige Konditioniervorrichtung 1, die sich im Eingriff mit einer zu konditionierenden Schleifscheibe 2 befindet. Die Schleifscheibe 2 weist eine umlaufende, sich zur Schleifscheibenmitte verjüngende Nut 3 auf, die vorzugsweise einen in etwa halbkreisförmigen Querschnitt hat. Hierbei kann die Schleifscheibe 2 entweder vollständig aus einem zur Materialbearbeitung geeigneten Schleifmaterial bestehen oder die Schleifscheibe 2 kann aus einem anderen Material, wie z. B. Metall oder dergleichen gefertigt sein und in einer umlaufenden Aussparung einen eingebetteten umlaufenden Ring aus entsprechendem, insbesondere mineralischen Schleifmaterial beinhalten.Fig. 1 shows a rod-
Während der Benutzung der Schleifscheibe 2, z. B. beim Schleifen von Kantenbereichen plattenförmiger Gegenstände, wie z. B. Glasscheiben oder dergleichen, wird die profilierte Nut 3 abgenutzt und nähert sich der Kontur der zu bearbeitenden Gegenstände an. Dies bewirkt, dass eine ordnungsgemäße Bearbeitung der zu schleifenden Kantenbereiche je nach Abnutzungsgrad der Nut 3 nicht mehr möglich ist. Auch kommt es durch die Abstumpfung zu einem Anstieg der Bearbeitungskräfte, was Werkstückschäden und Profilfehler verursachen kann.During use of the
Um die Profilierung der Nut 3 wieder herzustellen, eine andere Nutform in die Schleifscheibe 2 einzubringen oder aber die Schärfe der Nut 3 zu verändern, wird die stabförmige Konditioniervorrichtung 1 bei rotierender Schleifscheibe 2 in Eingriff mit der Nut 3 gebracht. Dabei tragen die nur eine sehr geringe Länge aufweisenden äußeren Bereiche so gut wie kaum Material ab, wohingegen mit steigender Länge des Querschnitts der Konditioniervorrichtung 1 der Materialabtrag zunimmt. Somit wird durch die Mitte der Konditioniervorrichtung 1 der höchste Materialabtrag in der Mitte der Nut 3 bewirkt und im dargestellten Beispiel eine in etwa halbkreisförmige Nut 3 erzielt. Dabei nimmt selbstverständlich die unterste Kante der stabförmigen Konditioniervorrichtung 1 während der Bearbeitung ebenfalls eine dem Nutquerschnitt entsprechende Profilierung an.In order to restore the profiling of the
Gleiches gilt analog auch für die Schärfebeeinflussung, bei der die äußeren Bereiche ebenfalls wesentlich geringer Konditionieren als die mittleren Bereiche.The same applies analogously to the influence of sharpness, in which the outer regions also have significantly lower conditioning than the middle regions.
Durch entsprechende Gestaltung des Längenverlaufes der Konditioniervorrichtung 1 können beliebig geformte Nuten 3 ohne Hinterschneidung erzielt werden.By appropriate design of the length course of the
Fig. 2 zeigt den Querschnitt einer weiteren erfindungsgemäßen stabförmigen Konditioniervorrichtung 1, bei der sowohl eine in Längs- als auch in Querrichtung symmetrische Ausbildung mit geraden Flanken vorgesehen ist.FIG. 2 shows the cross-section of a further rod-shaped
Fig. 3 zeigt ein weiteres Ausführungsbeispiel, bei dem der Querschnitt lediglich hinsichtlich der Längsachse symmetrisch ausgebildet ist, genauso wie bei dem Querschnitt gemäß Fig. 4. Die Konditioniervorrichtung 1 kann dabei sowohl mit nach vorne ausgerichtetem spitzen Ende, aber auch umgekehrt verwendet werden.Fig. 3 shows a further embodiment in which the cross-section is formed symmetrically only with respect to the longitudinal axis, as well as in the cross-section of FIG. 4. The
Fig. 5 zeigt ein weiteres Ausführungsbeispiel der Erfindung, wobei sich die Konditioniervorrichtung 1 aus einer Vielzahl von Teilbestandteilen 4 zusammensetzt, die von einer Halteeinrichtung 5 zumindest teilweise umgeben sind.5 shows a further embodiment of the invention, wherein the
Fig. 6 zeigt den Gegenstand nach Fig. 5 in einer perspektivischen Ansicht. Zur Beeinflussung der zu erzielenden Nutgeometrie können hierbei sämtliche oder auch lediglich bestimmte Teilbestandteile 4 aus der Halteeinrichtung 5 herausragen und somit während des Konditionierens im Eingriff sein. Dabei können sowohl der Gesamtquerschnitt der aus den Teilbestandteilen 4 gebildeten Konditioniervorrichtung 1 als auch die Teilbestandteile 4 verschiedenste Formen aufweisen.Fig. 6 shows the article according to Fig. 5 in a perspective view. To influence the groove geometry to be achieved, in this case all or even only certain partial components 4 from the holding
In Fig. 7 ist ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Konditioniervorrichtung 1 dargestellt, die sich im Eingriff mit einer zu konditionierenden Schleifscheibe 2 befindet. Dabei weist die Konditioniervorrichtung 1 eine halbkreis-scheibenförmige Gestalt, die durch 180°-Rotation eines in etwa trapezförmigen Querschnitts um seine breitere Kante entsteht, auf. Bei Verschleiß wird die Konditioniervorrichtung 1 in Pfeilrichtung nachgeführt. FIG. 7 shows a further embodiment of a
Claims (13)
- Use of a rod-shaped conditioning device (1) for conditioning grinding wheels (2) for machining the edge regions of plate-shaped objects, such as e.g. panes of glass or the like, the grinding wheels (2) in the conditioned state having respectively at least one circumferential groove (3) which tapers towards the grinding wheel centre at least in one partial region, characterised in that the conditioning device is used such that the conditioning device (1) has a cross-section which is adapted to the groove cross-section to be produced, the removal being dependent upon the length which is situated in engagement with the grinder, the width of the conditioning device (1) corresponding substantially to the width of the groove(s) (3), and the longitudinal course from one lateral end to the other lateral end of the conditioning device (1), corresponding to the depth course from one lateral edge to the other lateral edge of the groove(s) (3), being configured with increasing length at increasing depth to be produced.
- Method for conditioning grinding wheels (2) for machining the edge regions of plate-shaped objects, such as e.g. panes of glass or the like, the grinding wheels (2) in the conditioned state having respectively at least one circumferential groove (3) which tapers towards the grinding wheel centre at least in one partial region, by means of a conditioning device (1) for grinding wheels (2) for machining the edge regions of plate-shaped objects,
characterised in that the conditioning device (1) has a cross-section which is adapted to the groove cross-section to be produced, and the removal being dependent upon the length which is situated in engagement with the grinder, and the width of the conditioning device (1) corresponding substantially to the width of the groove(s) (3), and the longitudinal course from one lateral end to the other lateral end of the conditioning device (1), corresponding to the depth course from one lateral edge to the other lateral edge of the groove(s) (3), being configured with increasing length at increasing depth to be produced, and the conditioning device (1) being brought into engagement with the rotating grinding wheel (2) and being correspondingly tracked during material removal. - Method for conditioning grinding wheels (2) for machining the edge regions of plate-shaped objects, such as e.g. panes of glass or the like, the grinding wheels (2) in the conditioned state having respectively at least one circumferential groove (3) which tapers towards the grinding wheel centre at least in one partial region, by means of a conditioning device (1) for grinding wheels (2) for machining the edge regions of plate-shaped objects, characterised in that the width of the conditioning device (1) corresponds substantially to the width of the groove(s) (3), and the volume course across the width of the conditioning device, corresponding to the depth course from one lateral edge to the other lateral edge of the groove(s) (3), is configured with increasing volume at increasing depth to be produced so that, by means of variation in the number and size of embedded pores or in particular free spaces which are configured as lateral grooves or the like, a more or less severe conditioning is effected, and the conditioning device (1) being brought into engagement with the rotating grinding wheel (2) and being correspondingly tracked during material removal.
- Method for conditioning grinding wheels (2) for machining the edge regions of plate-shaped objects, such as e.g. panes of glass or the like, the grinding wheels (2) in the conditioned state having respectively at least one circumferential groove (3) which tapers towards the grinding wheel centre at least in one partial region, by means of a conditioning device (1) for grinding wheels (2) for machining the edge regions of plate-shaped objects, characterised in that the width of the conditioning device (1) corresponds substantially to the width of the groove(s) (3), and the abrasive properties of the material of the conditioning device (1) across the width of the conditioning device (1), corresponding to the depth course from one lateral edge to the other lateral edge of the groove(s) (3), being configured with better abrasive properties with increasing depth to be produced, and the conditioning device (1) being brought into engagement with the rotating grinding wheel (2) and being correspondingly tracked during material removal.
- Method for conditioning grinding wheels (2) for machining the edge regions of plate-shaped objects, such as e.g. panes of glass or the like, the grinding wheels (2) in the conditioned state having respectively at least one circumferential groove (3) which tapers towards the grinding wheel centre at least in one partial region, by means of a conditioning device (1) for grinding wheels (2) for machining the edge regions of plate-shaped objects, characterised in that the width of the conditioning device corresponds substantially to the width of the groove(s) (3), and the adaptation of the grain size distribution relative to the swarf spaces of the grinding wheel (2) across the width of the conditioning device (1), corresponding to the depth course from one lateral edge to the other lateral edge of the groove(s) (3), being configured with better adaptation at increasing depth to be produced, and the conditioning device (1) being brought into engagement with the rotating grinding wheel (2) and being correspondingly tracked during material removal.
- Method according to one of the claims 1 to 5, characterised in that the conditioning device (1) has a rod-shaped configuration.
- Method according to one of the claims 1 to 6, characterised in that the cross-section of the conditioning device (1) has an approximately triangular-shaped configuration.
- Method according to one of the claims 1 to 6, characterised in that the cross-section of the conditioning device (1) has an approximately diamond-shaped configuration.
- Method according to one of the claims 1 to 8, characterised in that the conditioning device (1) is composed of a multiplicity of partial components (4) surrounded by a holding device (5).
- Conditioning device (1) according to claim 9, characterised in that the components (4) comprise materials with different material properties.
- Method according to one of the claims 1 to 10, characterised in that the conditioning device (1) comprises a mineral material with a hardness which is suitable for conditioning the grinding wheel (2) and has an abrasive effect which is suitable for this purpose.
- Method according to one of the claims 1 to 11, characterised in that the tracking is effected manually.
- Method according to one of the claims 1 to 11, characterised in that the tracking is effected mechanically, in particular automatically by spring force or controlled by motorised drive.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE50013979T DE50013979D1 (en) | 2000-10-23 | 2000-10-23 | Conditioning of grinding wheels |
| EP00122993A EP1201366B1 (en) | 2000-10-23 | 2000-10-23 | Dressing of grinding wheels |
| US09/981,049 US6561879B2 (en) | 2000-10-23 | 2001-10-16 | Conditioning device for grinding wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00122993A EP1201366B1 (en) | 2000-10-23 | 2000-10-23 | Dressing of grinding wheels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1201366A1 EP1201366A1 (en) | 2002-05-02 |
| EP1201366B1 true EP1201366B1 (en) | 2007-01-17 |
Family
ID=8170171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00122993A Expired - Lifetime EP1201366B1 (en) | 2000-10-23 | 2000-10-23 | Dressing of grinding wheels |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6561879B2 (en) |
| EP (1) | EP1201366B1 (en) |
| DE (1) | DE50013979D1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100542741C (en) * | 2005-07-06 | 2009-09-23 | 鸿富锦精密工业（深圳）有限公司 | Rolling circle smelting tool |
| TWI345508B (en) * | 2006-01-20 | 2011-07-21 | Hon Hai Prec Ind Co Ltd | Cylindrical grinding apparatus and method of cylindrical grinding with the same |
| CN100515683C (en) * | 2006-01-21 | 2009-07-22 | 鸿富锦精密工业（深圳）有限公司 | Grinding wheel, rounding device using the grinding wheel, and rounding method |
| WO2012037584A1 (en) * | 2010-09-23 | 2012-03-29 | Inova Lisec Technologiezentrum Gmbh | Method and arrangement for resharpening grinding wheels |
| JP5693144B2 (en) * | 2010-10-27 | 2015-04-01 | 豊田バンモップス株式会社 | Rotary dresser |
| US10232491B2 (en) | 2015-05-29 | 2019-03-19 | Inland Diamond Products Company | Retruing of a grinding wheel using EDM machine |
| EP3335833B1 (en) * | 2015-08-10 | 2022-10-05 | Bando Kiko Co., Ltd. | Dressing method and dressing device |
| EP3463732B1 (en) * | 2016-05-31 | 2024-07-31 | Inland Diamond Products Company | Retruing of a grinding wheel using edm machine |
| ES2899451T3 (en) * | 2018-03-20 | 2022-03-11 | Vincent Srl | reviving device |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB816646A (en) * | 1957-10-11 | 1959-07-15 | Engineering Diamonds Ltd | Improvements in or relating to dressing tools |
| US2827037A (en) * | 1954-12-13 | 1958-03-18 | Wheel Trueing Tool Co | Form dressing assembly |
| BE794337A (en) * | 1972-01-19 | 1973-05-16 | Cirell Rudy J | TOOL FOR CRUSHING AND DRESSING WHEELS AND SIMILAR ABRASIVE MATERIALS |
| US4180046A (en) * | 1976-03-29 | 1979-12-25 | Kerner Ronald E | Radius and angle dresser |
| US4255905A (en) * | 1978-01-12 | 1981-03-17 | Kerner Ronald E | Method of radius and angle dressing |
| GB2020585A (en) * | 1978-05-15 | 1979-11-21 | Gen Electric | Dressing grinding wheels |
| US4274231A (en) * | 1978-12-20 | 1981-06-23 | Boyar-Schultz Corporation | Method and apparatus for dressing a grinding wheel |
| JPS57149159A (en) * | 1981-03-10 | 1982-09-14 | Dai Ichi High Frequency Co Ltd | Forming method of grinding surface of whetstone |
| JPS5930668A (en) * | 1982-08-13 | 1984-02-18 | Sumitomo Electric Ind Ltd | Diamond dresser |
| DE3238691A1 (en) * | 1982-10-19 | 1984-04-19 | Lach Spezialwerkzeuge GmbH, 6450 Hanau | Method of dressing grinding wheels |
| JPS614668A (en) * | 1984-06-14 | 1986-01-10 | Toyota Banmotsupusu Kk | Dresser and its manufacturing method |
| GB2203366A (en) * | 1987-04-07 | 1988-10-19 | Unicorn Ind Plc | Dressing grinding wheels |
| JPH0621652Y2 (en) * | 1988-03-22 | 1994-06-08 | セントラル硝子株式会社 | Dressing equipment for grinding wheels |
| US5117588A (en) * | 1989-06-21 | 1992-06-02 | Osborn Warren J | Semi-automatic dressing accessory |
| US5065733A (en) * | 1991-01-08 | 1991-11-19 | Swenson Henry F | Dressing tool for form dressing of a grinding wheel |
| JPH079341A (en) * | 1993-06-25 | 1995-01-13 | Ricoh Co Ltd | Dresser device for grinding |
| US5573449A (en) * | 1994-03-16 | 1996-11-12 | The Gleason Works | Threaded grinding wheel, method of dressing, and grinding a workpiece therewith |
| DE19624842C2 (en) * | 1996-06-21 | 2000-08-10 | Reishauer Ag | Method for the flexible profiling of grinding worms, a profiling tool and a device for carrying out the method |
| US6361412B1 (en) * | 1998-02-17 | 2002-03-26 | Michael Kaiser | Process and rotary point crush truer for dressing grinding wheels with profiled working surfaces |
| JP2000108028A (en) * | 1998-10-07 | 2000-04-18 | Mitsubishi Heavy Ind Ltd | Nc grinding machine |
-
2000
- 2000-10-23 DE DE50013979T patent/DE50013979D1/en not_active Expired - Fee Related
- 2000-10-23 EP EP00122993A patent/EP1201366B1/en not_active Expired - Lifetime
-
2001
- 2001-10-16 US US09/981,049 patent/US6561879B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US20020078940A1 (en) | 2002-06-27 |
| DE50013979D1 (en) | 2007-03-08 |
| EP1201366A1 (en) | 2002-05-02 |
| US6561879B2 (en) | 2003-05-13 |
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