EP2030728A1 - Grinding device and grinding machine with such a device - Google Patents
Grinding device and grinding machine with such a device Download PDFInfo
- Publication number
- EP2030728A1 EP2030728A1 EP07115124A EP07115124A EP2030728A1 EP 2030728 A1 EP2030728 A1 EP 2030728A1 EP 07115124 A EP07115124 A EP 07115124A EP 07115124 A EP07115124 A EP 07115124A EP 2030728 A1 EP2030728 A1 EP 2030728A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- gap
- rotation
- grinding device
- guide
- 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.)
- Withdrawn
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Classifications
-
- 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
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
-
- 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
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
- B24B3/54—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/066—Work supports, e.g. adjustable steadies adapted for supporting work in the form of tools, e.g. drills
Definitions
- the invention relates to a grinding device according to the preamble of claim 1.
- the invention further relates to a grinding machine comprising such a grinding device.
- the dependent claims 2 to 10 relate to further, advantageously configured grinding devices.
- the invention further relates to a grinding machine comprising such a grinding device.
- a grinding device in particular for grinding and / or sharpening knives, comprising a grinding wheel rotatably mounted about a rotation axis in the direction of rotation and having a cylindrical, abrasive Grinding surface, and comprising a guide member, which is disposed immediately adjacent to the grinding surface of the grinding wheel, wherein the guide member has a guide surface extending in such a way that the guide surface and the grinding surface form a gap which tapers increasingly opposite to the direction of rotation and parallel in the direction of the axis of rotation runs, and wherein immediately adjacent to the grinding surface of the grinding wheel, a support member is arranged with a gap extending to the support surface.
- the gap in the direction of rotation is designed substantially as a V-shaped gap.
- the grinding wheel has at least at its cylindrical grinding surface an abrasive agent to form the abrasive abrasive surface.
- the abrasive agent is preferably chosen such that during grinding a small, preferably a negligible wear occurs.
- Tungsten carbide, hard ceramic material and / or diamond and / or boron ozone and / or noble corundum and / or mixtures thereof are particularly suitable as abrasive agents.
- the depth of the gap preferably corresponds approximately to the width of the ground blade.
- the blade to be ground or its angle is determined by the geometry of the gap.
- the grinding device according to the invention therefore has the advantage that knives and blades can be reproducibly provided with an unusually good grinding, wherein the knives can be ground especially by persons who have little or no experience with grinding per se.
- the grinding apparatus according to the invention has a nip in which the blade of the knife is accurately guided, and also the grinding surface is accurately positioned with respect to the nip so that the blade of the knife is accurately guided with respect to the grinding surface and the blade of the knife is reproducibly ground identically can.
- the grinding surface of the grinding wheel preferably has a negligible wear, it is not necessary to readjust the position of the grinding wheel so that the grinding device can be operated with substantially constant reproducible grinding quality for a long time, especially until the grinding wheel is worn demanding adjustments are required. Therefore, the inventive grinding device is particularly suitable for a broad population group, for example, in the household.
- FIG. 1 shows a perspective view of a grinding machine 9 comprising a grinding device 1 with barely visible grinding wheel 2 and a guide member 3 and a support member 4, wherein between the guide member 3 and the grinding wheel, a gap S is formed.
- the grinding machine 9 also comprises a second grinding device 5 with a polishing pad 6 with a cylindrical polishing surface 6a and a second bearing part 7 with bearing surface 7a.
- the polishing pad 6 has a direction of rotation D.
- the second grinding device 5 further comprises a protective cover 8, which is arranged such that the protective cover 8 and the polishing surface 6a form a second gap S2, which increasingly tapers in the direction of rotation D2.
- the second grinding device 5 serves to pull off the knives and blades.
- the protective cover 8 and the gap S2 thus formed have the advantage that a deflection of the blade, as may occur during grinding, is prevented or limited.
- FIG. 2 shows in a side view and in a partial sectional view of the grinding device 1 in detail.
- the grinding device 1 comprises a grinding wheel 2 rotatably mounted about a rotation axis D 1 in the direction of rotation D.
- a gap S is formed between the grinding wheel 2 and the guide part 3.
- FIG. 3 shows the in FIG. 2 detail marked A in detail.
- FIG. 4 shows the in FIG. 3 shown arrangement in further details, which is why the FIGS. 3 and 4 will be described together below.
- the grinding wheel 2 comprises a cylindrical grinding surface 2 a comprising abrasive agents, for example Borozon.
- abrasive agent is preferably used an agent that has no or a negligible wear, so that such Abrasive surface 2a has the advantage that the position of the grinding surface 2a does not change and the grinding device 1 therefore does not need to be readjusted.
- the guide part 3 is arranged directly next to the grinding wheel 2 or above the grinding surface 2 a and has a guide surface 3 a which extends in such a way that a gap S forms between the guide surface 3 a and the grinding surface 2 a, which tapers in the opposite direction to the direction of rotation D.
- the gap S is parallel to the axis of rotation D 1.
- a support member 4 is arranged, with a support surface 4a extending towards the gap S.
- the minimum distance between the grinding surface 2a and the guide part 3 is very small, usually about 2/10 to 3/10 mm.
- the grinding surface 2a and the guide member 3 seem to contact each other, which is not true because they are slightly spaced apart.
- a blade 10 can be placed on the support surface 4a, and guided by sliding along the support surface 4a in the gap S, so that the blade 10 comes into contact with the grinding surface 2a and is thereby ground.
- the bearing surface 4a and the gap S cause a precise guidance of the blade 10, so that the blade 10 can be ground identically reproducible, especially of people who have no experience with tench of blades.
- a core of the invention is the gap S and the support member 4 to design such that the blade 10 is guided with respect to the grinding surface 2 a precise and reproducible.
- This is preferably achieved in that the gap S has a depth which corresponds approximately to the width of the cut of the blade 10 to be ground. This has the consequence that only this area is applied to the guide part 3, Um
- the gap S, the guide member 3 and the support member 4 may be configured in a plurality of ways.
- the gap S advantageously has a gap depth of less than 6 mm in the direction of rotation D.
- FIG. 4 shows a preferred embodiment of the gap S and the support member 4.
- the gap S is designed in the direction of rotation D substantially as a V-shaped widening gap, which is bounded by two tangents t1, t2, which intersect at an intersection S1, wherein the Tangents t1, t2 enclose an angle ⁇ .
- the predetermined by the course of the grinding surface 2 section 2b has a curved course.
- this section is referred to as substantially tangent-shaped, so that the gap 2 is limited by the two tangents tl, t2.
- the bisector W of the angle ⁇ runs parallel to the support surface 4a.
- the support surface 4a has a support surface end 4b aligned with the gap S, wherein this support surface end 4b is preferably as in FIG FIG. 4 is shown arranged such that between the intersection S 1 and the support surface end 4b an accessible length 2b of the grinding wheel 2 is formed, which can act on the blade 10.
- the gap S is formed as a substantially isosceles triangle by the guide surface 3a and the accessible length 2b in the course direction of the bisecting line W or in the direction of rotation D are designed approximately the same length.
- the support surface 4a preferably extends horizontally.
- the entrance height of the gap S has a maximum height S h .
- the distance of the bisector W to the support surface 4a is half of the maximum height S h .
- This embodiment has the advantage that a blade can be symmetrically provided on both sides with the same ground, since both sides of the blade 10 to be ground in the gap S are performed the same.
- the gap S thus ensures a precise and reproducible guidance of the blade 10 with respect to the grinding surface 2a, which allows a simple and reproducible grinding of the blade 10.
- the guide part 3 and / or the support part 4, as in FIG. 4 indicated by the reference numerals 3b, 3c, 4b, 4c, is adjustable in height and / or inclination to change the angle with respect to the grinding surface 2a, and thereby also to change the grinding angle of the blade 10. It can also be advantageous to provide a plurality of guide parts 3, which have differently shaped and / or differently extending guide surfaces 3a. Depending on the geometry of the blade 10 to be ground, the guide part 3 can be replaced by a guide surface 3a which is suitable for the grinding to be created.
Abstract
Description
Die Erfindung betrifft eine Schleifvorrichtung gemäss dem Oberbegriff von Anspruch 1. Die Erfindung betrifft weiter eine Schleifmaschine umfassend eine derartige Schleifvorrichtung.The invention relates to a grinding device according to the preamble of
Es ist eine Vielzahl von Schleifgeräten und Schleifvorrichtungen zum Schleifen oder zum Nachschärfen von Messern beziehungsweise deren Klingen bekannt. Diese Schleifgeräte weisen den Nachteil auf, dass es schwierig ist eine Klinge reproduzierbar gleichmässig zu schärfen, und dass dies insbesondere für Personen schwierig ist, die bezüglich Schleifen nur eine geringe Erfahrung aufweisen.There are a variety of grinding and grinding devices for grinding or resharpening knives or their blades known. These grinders have the disadvantage that it is difficult to reproducibly sharpen a blade uniformly, and that this is particularly difficult for people who have little experience in terms of grinding.
Es ist somit Aufgabe der Erfindung eine vorteilhaftere Schleifvorrichtung zu bilden. Diese Aufgabe wird gelöst mit einer Schleifvorrichtung aufweisend die Merkmale von Anspruch 1.It is therefore an object of the invention to form a more advantageous grinding device. This object is achieved with a grinding device having the features of
Die Unteransprüche 2 bis 10 betreffen weitere, vorteilhaft ausgestaltete Schleifvorrichtungen. Die Erfindung betrifft weiter eine Schleifmaschine umfassend eine derartige Schleifvorrichtung.The dependent claims 2 to 10 relate to further, advantageously configured grinding devices. The invention further relates to a grinding machine comprising such a grinding device.
Die Aufgabe wird insbesondere gelöst mit einer Schleifvorrichtung, insbesondere zum Schleifen und/oder Schärfen von Messern, umfassend eine um eine Drehachse in Drehrichtung drehbar gelagerte Schleifscheibe mit einer zylinderförmigen, abrasiven Schleifoberfläche, sowie umfassend ein Führungsteil, welches unmittelbar neben der Schleifoberfläche der Schleifscheibe angeordnet ist, wobei das Führungsteil eine derart verlaufende Führungsfläche aufweist, dass die Führungsfläche sowie die Schleifoberfläche einen Spalt ausbilden, der sich entgegengesetzt zur Drehrichtung zunehmend verjüngt und der parallel in Richtung der Drehachse verläuft, und wobei unmittelbar neben der Schleifoberfläche der Schleifscheibe ein Auflageteil mit einer zum Spalt hin verlaufenden Auflagefläche angeordnet ist.The object is achieved in particular with a grinding device, in particular for grinding and / or sharpening knives, comprising a grinding wheel rotatably mounted about a rotation axis in the direction of rotation and having a cylindrical, abrasive Grinding surface, and comprising a guide member, which is disposed immediately adjacent to the grinding surface of the grinding wheel, wherein the guide member has a guide surface extending in such a way that the guide surface and the grinding surface form a gap which tapers increasingly opposite to the direction of rotation and parallel in the direction of the axis of rotation runs, and wherein immediately adjacent to the grinding surface of the grinding wheel, a support member is arranged with a gap extending to the support surface.
In einer besonders vorteilhaften Ausgestaltung ist der Spalt in Drehrichtung im Wesentlichen als V-förmiger Spalt ausgestaltet.In a particularly advantageous embodiment, the gap in the direction of rotation is designed substantially as a V-shaped gap.
Die Schleifscheibe weist zumindest an deren zylinderförmigen Schleifoberfläche ein abrasives Mittel auf, um die abrasive Schleifoberfläche auszubilden. Das abrasive Mittel ist vorzugsweise derart gewählt, dass während dem Schleifen eine geringe, vorzugsweise eine vernachlässigbar kleine Abnutzung auftritt. Als abrasive Mittel eignen sich insbesondere Wolframkarbid, hartkeramisches Material und/oder Diamant und/oder Borozon und/oder Edelkorunde und/oder deren Mischungen.The grinding wheel has at least at its cylindrical grinding surface an abrasive agent to form the abrasive abrasive surface. The abrasive agent is preferably chosen such that during grinding a small, preferably a negligible wear occurs. Tungsten carbide, hard ceramic material and / or diamond and / or boron ozone and / or noble corundum and / or mixtures thereof are particularly suitable as abrasive agents.
Die Tiefe des Spaltes entspricht vorzugsweise etwa der Breite der geschliffenen Klinge. Dadurch ist die zu schleifende Klinge beziehungsweise deren Winkel durch die Geometrie des Spaltes festgelegt. Die erfindungsgemässe Schleifvorrichtung weist daher den Vorteil, dass Messer und Klingen reproduzierbar mit einem ungewöhnlich guten Schliff versehen werden können, wobei die Messer insbesondere auch von Personen geschliffen werden können, welche an sich wenig oder gar keine Erfahrung mit Schleifen haben.The depth of the gap preferably corresponds approximately to the width of the ground blade. As a result, the blade to be ground or its angle is determined by the geometry of the gap. The grinding device according to the invention therefore has the advantage that knives and blades can be reproducibly provided with an unusually good grinding, wherein the knives can be ground especially by persons who have little or no experience with grinding per se.
Die erfindungsgemässe Schleifvorrichtung weist ein Spalt auf, in welchem die Klinge des Messers genau geführt ist, wobei auch die Schleifoberfläche bezüglich dem Spalt genau positioniert ist, sodass die Klinge des Messers bezüglich der Schleifoberfläche genau geführt ist, und die Klinge des Messers reproduzierbar gleich geschliffen werden kann. Weil die Schleifoberfläche der Schleifscheibe vorzugsweise eine vernachlässigbar kleine Abnutzung aufweist ist zudem kein Nachstellen der Lage der Schleifscheibe erforderlich, sodass die Schleifvorrichtung während langer Zeit, insbesondere bis die Schleifscheibe abgenutzt ist, mit im Wesentlichen gleichbleibender reproduzierbarer Schleifqualität betrieben werden kann, ohne dass eine Wartung oder anspruchsvolle Einstellarbeiten erforderlich sind. Daher ist die erfindungsgemässe Schleifvorrichtung insbesondere auch für eine breite Bevölkerungsgruppe geeignet, beispielsweise auch im Haushalt.The grinding apparatus according to the invention has a nip in which the blade of the knife is accurately guided, and also the grinding surface is accurately positioned with respect to the nip so that the blade of the knife is accurately guided with respect to the grinding surface and the blade of the knife is reproducibly ground identically can. In addition, because the grinding surface of the grinding wheel preferably has a negligible wear, it is not necessary to readjust the position of the grinding wheel so that the grinding device can be operated with substantially constant reproducible grinding quality for a long time, especially until the grinding wheel is worn demanding adjustments are required. Therefore, the inventive grinding device is particularly suitable for a broad population group, for example, in the household.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispieles näher erläutert. Die Figuren zeigen:
- Fig. 1
- eine perspektivische Ansicht einer Schleifmaschine;
- Fig. 2
- eine Seitenansicht der in
dargestellten Schleifmaschine;Figur 1 - Fig. 3
- eine seitliche Detailansicht der Schleifvorrichtung, welche in
mit A gekennzeichnet ist.Figur 2 - Fig. 4
- eine weitere seitliche Detailansicht der in
dargestellten Schleifvorrichtung.Figur 3
- Fig. 1
- a perspective view of a grinding machine;
- Fig. 2
- a side view of in
FIG. 1 illustrated grinding machine; - Fig. 3
- a side detail view of the grinding device, which in
FIG. 2 marked with A. - Fig. 4
- another lateral detail view of in
FIG. 3 illustrated grinding device.
Die Schleifscheibe 2 umfasst eine zylinderförmige Schleifoberfläche 2a umfassend abrasive Mittel, beispielsweise Borozon. Als abrasives Mittel wird bevorzugt ein Mittel verwendet, das keine oder eine vernachlässigbar kleinen Abnutzung aufweist, sodass eine derartige Schleifoberfläche 2a den Vorteil aufweist, dass sich die Lage der Schleifoberfläche 2a nicht verändert und die Schleifvorrichtung 1 daher nicht nachgestellt werden muss. Das Führungsteil 3 ist unmittelbar neben der Schleifscheibe 2 beziehungsweise oberhalb der Schleifoberfläche 2a angeordnet und weist eine Führungsfläche 3a auf, welche derart verläuft, dass sich zwischen der Führungsfläche 3a und der Schleifoberfläche 2a ein Spalt S ausbildet, welcher sich entgegengesetzt zur Drehrichtung D verjüngt. In Richtung der Drehachse D 1 verläuft der Spalt S parallel zur Drehachse D 1. Zudem ist ein Auflageteil 4 angeordnet, mit einer zum Spalt S hin verlaufenden Auflagefläche 4a. Der minimale Abstand zwischen der Schleifoberfläche 2a und dem Führungsteil 3 ist sehr klein, üblicherweise etwa 2/10 bis 3/10 mm. In
Ein Kern der Erfindung ist den Spalt S sowie das Auflageteil 4 derart auszugestalten, dass die Klinge 10 bezüglich der Schleifoberfläche 2a präzise und reproduzierbar geführt ist. Dies wird vorzugsweise dadurch erzielt, dass der Spalt S eine Tiefe aufweist, welche etwa der Breite des Schliffes der zu schleifenden Klinge 10 entspricht. Dies hat zur Folge dass nur dieser Bereich am Führungsteil 3 anliegt, Um diese Wirkung zu erzielen kann der Spalt S, das Führungsteil 3 sowie das Auflageteil 4 in einer Mehrzahl von Möglichkeiten ausgestaltet sein. Der Spalt S weist vorteilhafterweise in Drehrichtung D eine Spalttiefe von weniger als 6 mm auf.A core of the invention is the gap S and the
In einer vorteilhaften Ausgestaltung weist die Auflagefläche 4a ein zum Spalt S hin ausgerichtetes Auflageflächenende 4b auf, wobei dieses Auflageflächenende 4b vorzugsweise wie in
In an advantageous embodiment, the support surface 4a has a
Die Auflagefläche 4a verläuft vorzugsweise horizontal. Die Eingangshöhe des Spaltes S weist eine maximale Höhe Sh auf. Vorzugsweise beträgt der Abstand der Winkelhalbierenden W zur Auflagefläche 4a die Hälfte der maximalen Höhe Sh. Diese Ausgestaltung weist den Vorteil auf, dass eine Klinge beidseitig symmetrisch mit demselben Schliff versehen werden kann, da beide Seiten der zu schleifenden Klinge 10 im Spalt S gleich geführt sind. Der Spalt S gewährleistet somit eine präzise und reproduzierbare Führung der Klinge 10 bezüglich der Schleifoberfläche 2a, was ein einfaches und reproduzierbares Schleifen der Klinge 10 ermöglicht.The support surface 4a preferably extends horizontally. The entrance height of the gap S has a maximum height S h . Preferably, the distance of the bisector W to the support surface 4a is half of the maximum height S h . This embodiment has the advantage that a blade can be symmetrically provided on both sides with the same ground, since both sides of the
Es kann sich als vorteilhaft erweisen, dass das Führungsteil 3 und/oder das Auflageteil 4, wie in
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07115124A EP2030728A1 (en) | 2007-08-28 | 2007-08-28 | Grinding device and grinding machine with such a device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07115124A EP2030728A1 (en) | 2007-08-28 | 2007-08-28 | Grinding device and grinding machine with such a device |
Publications (1)
Publication Number | Publication Date |
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EP2030728A1 true EP2030728A1 (en) | 2009-03-04 |
Family
ID=38519730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP07115124A Withdrawn EP2030728A1 (en) | 2007-08-28 | 2007-08-28 | Grinding device and grinding machine with such a device |
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EP (1) | EP2030728A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2324953A2 (en) | 2009-11-19 | 2011-05-25 | Newrox AG | Grinding machine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3501871A (en) * | 1967-03-17 | 1970-03-24 | Southern Saw Service | Blade orienting attachment for grinding wheels |
WO1984003246A1 (en) * | 1983-02-16 | 1984-08-30 | Lee S Wolff | Implement sharpening device |
US4607459A (en) * | 1984-08-10 | 1986-08-26 | Wen Products, Inc. | Combined hollow grinder, sharpener and honer |
FR2611559A3 (en) * | 1987-03-05 | 1988-09-09 | Arcor Sarl | Method for sharpening knives, scissors and other cutting tools using dry grinding wheels |
US5172484A (en) * | 1991-05-16 | 1992-12-22 | Thomas Triola | Angle measuring device for peripheral grinding wheels with tool rests |
-
2007
- 2007-08-28 EP EP07115124A patent/EP2030728A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3501871A (en) * | 1967-03-17 | 1970-03-24 | Southern Saw Service | Blade orienting attachment for grinding wheels |
WO1984003246A1 (en) * | 1983-02-16 | 1984-08-30 | Lee S Wolff | Implement sharpening device |
US4607459A (en) * | 1984-08-10 | 1986-08-26 | Wen Products, Inc. | Combined hollow grinder, sharpener and honer |
FR2611559A3 (en) * | 1987-03-05 | 1988-09-09 | Arcor Sarl | Method for sharpening knives, scissors and other cutting tools using dry grinding wheels |
US5172484A (en) * | 1991-05-16 | 1992-12-22 | Thomas Triola | Angle measuring device for peripheral grinding wheels with tool rests |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2324953A2 (en) | 2009-11-19 | 2011-05-25 | Newrox AG | Grinding machine |
EP2324953A3 (en) * | 2009-11-19 | 2015-06-03 | Newrox AG | Grinding machine |
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