Honing device with one-point support

Abstract

A knife-sharpening device has two sharpening rods (24; 25) which are pivotably arranged at a base (2) and assume a V-shaped configuration relative to one another, wherein the V-shaped configuration of the sharpening rods (24; 25) serves for the introduction of a knife. The sharpening rods (24; 25) have at least one sharpening insert (30) each; wherein the sharpening rods (24; 25) are fixed in their V-shaped configuration relative to one another at a predetermined distance in a rest position (19) by the force of springs (29) each. Upon introduction of the knife, the sharpening rods (24; 25) can be separated from one another against the force of the springs (29) in a sharpening position (1) upon contact of the knife with the sharpening inserts (30). The sharpening rods (24; 25) are fixed at the base (2) via a single fixing point (42).

Description

[0001] The present invention relates to a sharpening device having at least two sharpening rods pivotally arranged at a base.

[0002] A sharpening device is known from DE 10 2007 061 535 B4. This device has a support at which two intersecting sharpening rods are rotatably supported and subjected to a load by means of spring pressure. The device has a tool guide slot open at one end, extending in the direction of the intersection of the sharpening rods.

[0003] In this way, the sharpening rods are pushed away from each other from the rest position (in which the sharpening rods are at an angle) to the sharpening position against the resting force of the spring. These sharpening rods can be locked in the sharpening position by a locking device for fine sharpening of the tool, in which the angle of the sharpening rods is greater than that in the rest position.

[0004] The resting position corresponds to the state of not using the tool. Conversely, the sharpening position refers to the position of the sharpening device in which the blade, with or without serrations, can be ground and / or finely ground and / or polished.

[0005] Known sharpening devices require multiple fastening devices for each sharpening bar to position it on the carrier plate of the sharpening device. If excessive restoring force is applied to the cutting edge of the tool when it is introduced into the slot in the plate of the sharpening device, or if the cutting edge of the tool to be sharpened is curled when it is introduced into the plate, the material of the plate will be scraped off.

[0006] This can also damage the cutting edge of the tool to be sharpened.

[0007] Material debris that has been scraped or ground off may adhere to the sharpening device. This debris can then unintentionally come into contact with the sharpening insert or the cutting edge of the tool. Furthermore, the material debris may enter between the tool and the sharpening insert during subsequent sharpening processes, hindering optimal tool sharpening.

[0008] In other known sharpening devices, contaminants located at the cutting edge of the tool may reach the spring and / or the sharpening insert and hinder the optimal sharpening process.

[0009] Other known sharpening devices have been proven to be disadvantageous because the sharpening insert and / or spring of the sharpening device are located in the area affected by the user's hands, which may cause injury to the user's hands.

[0010] Other known sharpening devices consist of multiple individual parts, which require considerable technical expertise to construct and replace. These individual technical parts can potentially damage the sharpening device when installed by the user.

[0011] These multiple individual technical components also increase the manufacturing, repair, and maintenance costs of the sharpening device.

[0012] The immutable spring force of many known sharpening devices also prevents them from being used for different types and qualities of knife blades.

[0013] Purpose of the invention

[0014] Therefore, the present invention aims to provide a sharpening device that can be used to perform subsequent grinding and / or fine grinding and / or polishing of the cutting edges of knives of different types, qualities and functions using a single sharpening device.

[0015] A sharpening device should be created in which the spring and sharpening insert are arranged such that, if not completely avoidable, the risk of injury to the user can be almost eliminated.

[0016] Additionally, a sharpening device should be provided that prevents the cutting edge of the tool to be sharpened from being damaged by contact with housing parts, metal springs, and other components of the sharpening device when it is guided into the slot of the sharpening device.

[0017] Components of the sharpening device, such as the sharpening inserts and springs used for grinding and / or fine-grinding or polishing knives, should be protected from contamination, especially from food residue adhering to the blade. The concept of knife sharpening also includes the concept of knife grinding.

[0018] The cleaning of the sharpening device should also be able to be performed by users without technical experience.

[0019] Compared to other tools known in the prior art for sharpening cutting tools, this sharpening device should comprise a smaller number of parts and components. This should significantly reduce the manufacturing cost of the sharpening device.

[0020] The accessibility of the cutting edge of the tool to be sharpened into the V-shaped structure of the sharpening bar should be improved. Furthermore, the sharpening device should be usable for all types and qualities of tools, for single-bevel cutting edges and also for multi-bevel cutting edges.

[0021] Solution

[0022] These objectives are achieved by a sharpening device according to the features disclosed herein.

[0023] In the context of this invention, a sharpening device is understood as a device designed not only for sharpening, but also for grinding, fine grinding, and polishing knives, scissors, and other tools for chip-free cutting or slicing from different materials.

[0024] Additionally, it is assumed, by way of example but not exclusively, that the sharpening device is used to grind, finely grind and / or polish the cutting edge of a tool.

[0025] The sharpening device includes sharpening rods, which are arranged at predetermined angles relative to each other by the force of springs in the resting position. The two sharpening rods are arranged side-by-side. The two sharpening rods can also be arranged overlapping each other.

[0026] The sharpening device includes at least two sharpening rods. These two sharpening rods are pivotally supported at a base.

[0027] The resting position is the position of the sharpening device in which the cutting edge of the tool has not yet been guided into the V-shaped structure of the sharpening bar.

[0028] Conversely, the sharpening position is the position of the tool in which the cutting edge has been guided into the V-shaped structure of the sharpening rod. In the sharpening position, at least one side of the cutting edge is in contact with the sharpening rod.

[0029] Each sharpening bar is held in place by a spring. The two sharpening bars are positioned at a predetermined angle relative to each other by the restoring force of the spring.

[0030] base

[0031] In this invention, the term "base" should be understood as a component on which the at least one sharpening rod is pivotally arranged.

[0032] A base is an object with a three-dimensional shape. The three-dimensional shape is defined and / or described by its surface. A base can be formed as a column or a rectangle.

[0033] By way of example and by no means exclusive, the base may be formed in the shape of a sphere, a pyramid, or a cube.

[0034] The surface of the base can be composed of flat or curved blocks.

[0035] The base can be formed as a ring or as a column or hollow column.

[0036] In another embodiment of the invention, the base may also be formed in a conical shape.

[0037] Alternatively, the base can be a hollow object. The base can also be an object that is at least partially solid.

[0038] Furthermore, it is assumed, purely illustratively but not exclusively, that the base is at least partially formed as a shell.

[0039] The housing will be described in detail below.

[0040] Needless to say, the base can also take other geometric shapes.

[0041] In one embodiment of the invention, the base is used to grip and / or secure the at least one sharpening device.

[0042] The base includes at least one contour on which the user of the sharpening device can rest at least one finger of their hand and / or within the contour.

[0043] The base may be made at least partially, for example, of at least one material that is comfortable or pleasant to the touch. This material may be non-slip or liquid-repellent. The base may be made of any material.

[0044] Fastening device

[0045] According to a preferred embodiment of the invention, the base includes a fastening device on at least one side facing away from the grinding bar.

[0046] With the aid of this fastening device, a vacuum is preferably created below the side of the base that is used to support the base on the bottom surface for fastening.

[0047] The sharpening device can also be secured to the bottom surface or the bottom surface by magnetic means or by any other force and / or shape engagement.

[0048] Grip element

[0049] According to another preferred embodiment of the invention, at least one gripping element is arranged on at least one side of the base.

[0050] The gripping element can be an open or closed handle. Alternatively, the gripping element can be a lever.

[0051] Needless to say, gripping elements can also be formed in any other way.

[0052] A gripping element is a device that allows a user to grip and / or hold and / or move the sharpening device.

[0053] The gripping element is formed as part of the guiding element. The guiding element will be described in detail below.

[0054] The gripping element may be made of one or more materials that are the same as the base. The gripping element may also be made of at least one material that is different from the at least one material of the base, depending on the type and quality.

[0055] The gripping element is configured to allow the user to hold the sharpening device securely and / or prevent slippage.

[0056] The gripping element may have at least one profile.

[0057] The gripping element can be integrally connected to the base material. The gripping element can also be formed in a form that allows it to be removed from the base.

[0058] case

[0059] The base is at least partially formed as a shell.

[0060] The housing has a surrounding wall that separates the outer side of the base from the inner side of the base.

[0061] The inner side of the base is formed, preferably but not exclusively, to support the at least two grinding rods that are pivotable against the base.

[0062] The housing has at least one opening on its upper side facing the sharpening rod, through which the sharpening rod extends into the housing for support.

[0063] The shell can be opened. The shell can be formed in such a way that it can be completely or partially disintegrated into at least two half-shells.

[0064] According to an additional embodiment of the invention, the housing may be formed as a protective body.

[0065] The housing, forming a protective structure, accommodates the end of the sharpening rod that extends into the housing. The end of the sharpening rod extending into the housing, as well as the spring preferably located at the sharpening rod, are protected by the housing from being touched by the user.

[0066] The housing, forming a protective structure, is used to protect the sharpening rod and spring from damage and / or dirt.

[0067] The housing conceals the functional parts of the sharpening device (such as the end of the sharpening rod that extends into the housing and the spring) from being seen by the user.

[0068] Discharge device

[0069] The housing has at least one discharge device on the inner wall and / or outer side of the housing.

[0070] This discharge device is used to discharge solids and / or fluids that enter the housing of the base during the sharpening of cutting tools.

[0071] Preferably, a cleaning liquid is used to drain from the outside and / or inside of the housing and remove fluids and / or solids.

[0072] The cleaning liquid is preferably used to wash away the solids or fluids that cause the dirt from the housing of the base downwards.

[0073] Guide element with slot

[0074] The guide element is positioned on the following side of the base: on which the grinding rod extends from the housing.

[0075] The guide element preferably extends on at least one side of the grinding bar with its axis parallel to the grinding bar.

[0076] Alternatively, a guide element can be arranged on each side of the sharpening rod, parallel to the upper shaft.

[0077] The guide element includes slots. The slots are open at the ends of the guide element facing away from the base. Conversely, the slots are closed at the ends of the guide element facing the base.

[0078] The V-shaped structure of the grinding rod and the V-shaped structure of the slot are arranged axially flush with each other.

[0079] In this invention, the term "slot" is understood to refer to a groove in the guide element that is elongated and / or inclined and / or angled. The slot extends transversely to the plane in which the guide element extends. The slot can be sawed into the guide element. The slot can also be milled.

[0080] The slot extends downward from the upper edge of the guide element in the direction of the base within the guide element, and the guide element is fixed to the base for vertical arrangement.

[0081] The width of the slot can be varied along its length.

[0082] Within the guide element, the edge of the slot has a single or multiple bends. Alternatively, the edge of the slot may have a straight direction.

[0083] The edges of the slot are rounded. However, these edges can also take other geometric shapes.

[0084] One embodiment of the invention proposes that the slot in the guiding element has a width that increases exponentially from its closed end to its open end.

[0085] At its upper edge, the guide element has an inlet area for easily guiding the tool into the slot of the guide element and between the two grinding bars.

[0086] This makes it easier to guide in, especially wider cutting edges. It also prevents damage to the material of the guide element when guiding the tool into the slot.

[0087] This prevents the material of the guide element and / or the material of the sharpening rod from being scraped off and / or cut into and / or otherwise damaged by technical means when the tool is guided between the preferred V-shaped arrangement of the sharpening inserts.

[0088] The guiding element is made of a cut-resistant material.

[0089] In the lead-in area of ​​the slot, the edge of the slot may, by way of example and by no means exclusive, include an angle of 80°–120°.

[0090] Sharpening rod

[0091] According to the present invention, the sharpening device has at least two sharpening rods.

[0092] These sharpening rods are arranged at the base. They are positioned in a V-shape at the base.

[0093] The V-shaped structure of the sharpening rods relative to each other is used to guide the cutting tool between the sharpening rods.

[0094] In the resting position, these sharpening rods are fixed in their V-shaped structures by the force of the springs at a predetermined distance.

[0095] As the tool is introduced and when it comes into contact with these sharpening inserts, the sharpening rods in the sharpening position are able to separate from each other against the force of the springs.

[0096] According to the invention, a unique fixing point is provided, through which these sharpening rods are fixed to the base.

[0097] In order for these sharpening rods to pivot relative to the base, the pivot axis is arranged at an angle to the base.

[0098] The pivot axis extends at an angle relative to the base. This angle is preferably a right angle, but other angles may also be used.

[0099] The pivot axis extends along the longitudinal axis of the pin and / or the sub-pin (Teilzapfens) and / or parallel to the longitudinal axis.

[0100] According to the invention, the single fixed point (through which at least one sharpening rod can move relative to the base) is formed by a pin and / or the two sub-pins.

[0101] A pivot axis extending along the longitudinal axis of the pin and / or sub-pin extends through the single fixing point of the at least one grinding bar against the base.

[0102] The preferred material for the sharpening rod is one that neither dulls nor otherwise damages the tool when it is touched by the sharpening rod while the tool is being guided into the slot.

[0103] Each of the two sharpening rods is configured as a carrier for at least one sharpening insert.

[0104] A sharpening rod is an elongated and / or rod-shaped object. It is solid in shape. Preferably, it has a circular cross-section. However, the cross-section can also be square. Needless to say, a sharpening rod can have any other cross-section.

[0105] A spring is installed at each of the sharpening rods. The corresponding springs are securely fastened to the respective sharpening rods to prevent them from loosening.

[0106] When an inlet element is provided, the spring is secured to the grinding rod via a retaining device at the closed end of the slot facing the inlet element. At the open end of the slot facing the inlet element, the spring is secured to the grinding rod via a pin.

[0107] These sharpening rods each have at least one sharpening insert. The two sharpening rods are angled relative to each other, preferably arranged in a V-shape. As a cutting tool is inserted between the V-shaped sharpening rods, the cutting edge of the tool contacts at least two sharpening inserts. Each sharpening insert is assigned to one of the two sharpening rods. The sharpening rods thus resist the restoring force of the springs to change from a rest position to a sharpening position.

[0108] The sharpening rods extend in a V-shape without overlapping. In this invention, the V-shape can also include an arc shape.

[0109] In the area of ​​the holding device, the V-shaped structure of the sharpening rods may include, exemplarily but not exclusively, an angle of 11° to 21° between the sharpening rods.

[0110] The V-shaped structure of the grinding rod and the slots of the preferred guide elements are arranged axially flush with each other on a common axis.

[0111] In the sharpening position, the cutting edge of the knife touches one sharpening insert on each side of a sharpening rod.

[0112] In the sharpening position, the sharpening bar and the sharpening insert arranged in and / or on the sharpening bar are subjected to the restoring force of the spring.

[0113] The force applied by the user to the sharpening insert via the blade and indirectly to the sharpening rod via the sharpening insert causes the sharpening rod to separate from each other against the restoring force of the spring.

[0114] When a guide element is provided, the two grinding rods are hinged to the base about a common pivot axis in the region of the closed end of the slot of the guide element.

[0115] In the region of the closed end of the slot in the preferred arrangement of the guide element, the two grinding rods are hinged to the base about a common pivot axis.

[0116] A retaining device is provided, in which the spring is fixed at its lower end. The retaining device is pivotally hinged to the guide element about the pivot axis.

[0117] The proposed design is that the sharpening rod is formed as a protective body. The protective body should prevent the user from touching the sharpening insert with their fingers and being injured when sharpening, fine-grinding and / or polishing the blade with the aid of the sharpening device and / or when assembling the sharpening device and / or maintaining the sharpening device.

[0118] The two sharpening rods are pivotally fixed to the base at a distance relative to the preferred arrangement of the guide elements.

[0119] The movement of the sharpening rods relative to each other takes place in a plane that extends parallel to the plane from which the guide element extends.

[0120] In the region of the closed end of the slot of the guide element, the two springs engage with and are fixed therein in the retaining device.

[0121] These springs are free to pivot in the region of the open end of the slot of the guide element. In the region of the open end of the slot of the preferred arrangement of the guide element, the corresponding spring is connected to the associated sharpening rod.

[0122] In the region at the open end of the slot, these springs can pivot relative to each other.

[0123] These springs are fixed in the holding device and can be switched from the rest position to the sharpening position in this fixed state.

[0124] In the region of the closed end of the slot of the preferred arrangement of the guide elements, these grinding rods are supported on the base about a common pivot axis.

[0125] According to the invention, a single fixing point is provided. These sharpening rods are fixed to the base via this single fixing point.

[0126] The fixed points will be explained in detail below.

[0127] The fixing point of the sharpening rod

[0128] A single fixing point is provided to support the sharpening bar against the housing of the sharpening device.

[0129] These sharpening rods are fixed to the base via this single anchor point.

[0130] The single anchor point is located within the housing. The sharpening rods are anchored to each other and / or to the base at this single anchor point.

[0131] Preferably, but by no means exclusively, the single fixing point is arranged inside the housing at the wall of the housing.

[0132] The fixing point for the sharpening rod can be formed as a pin inside the housing.

[0133] The pin can be rotatably hinged to the inner wall of the housing.

[0134] The pin can be connected to at least one of the sharpening rods of the sharpening device.

[0135] In order to move the at least one sharpening rod from the rest position to the sharpening position, the at least one sharpening rod is rotatably supported at the pin.

[0136] At least one additional sharpening rod is securely connected to the pin.

[0137] In an additional embodiment of the invention, the two grinding rods are rotatably supported at the pin.

[0138] Another embodiment of the invention proposes that each of the two sharpening rods includes at least one sub-pin at its end extending into the housing of the sharpening device.

[0139] Preferably, but not exclusively, the pin has a short end. It goes without saying that the pin may also include a long end.

[0140] The pins of the sharpening rod are rotatably supported at their short ends on the inner wall of the housing.

[0141] The long ends of the pins of the sharpening rod are arranged flush with each other and opposite each other. The long ends of the two pins of the sharpening rod are joined together to form a common pin.

[0142] The long ends of these pins can be joined together as form-fit connections. These long pins can also form force-fit connections.

[0143] Sharpening insert

[0144] At least one sharpening insert is arranged at each sharpening rod.

[0145] This allows for the arrangement of different types and qualities of sharpening inserts at the sharpening bar, for example, for grinding and / or fine grinding and / or polishing.

[0146] These sharpening inserts are arranged on the upper side of the sharpening rod. Alternatively, the sharpening inserts can be embedded in the sharpening rod. The surface of the sharpening insert closes with the surface of the sharpening rod.

[0147] Alternatively, the sharpening insert can be glued or snapped into the sharpening rod. The sharpening insert can be inserted into the sharpening rod. For secure fastening, the sharpening insert can be welded or soldered to the sharpening rod. Needless to say, the sharpening insert can also be secured to the sharpening rod using other techniques.

[0148] These sharpening rods are arranged in a V-shape relative to each other. The sharpening inserts are arranged at the sharpening rods such that at least one sharpening insert of one sharpening rod is opposite to at least one sharpening insert of another sharpening rod at the same height.

[0149] These sharpening inserts are arranged at the sharpening rods such that the cutting edge of the tool guided between the sharpening rods touches the opposing sharpening inserts on both sides.

[0150] The sharpening device has sharpening inserts that can be used to process the cutting edge of the tool along its total length.

[0151] Sharpening and / or grinding and / or fine grinding and / or polishing dull tools by means of a sharpening insert.

[0152] The sharpening insert comprises a material that is stronger and / or more durable than the tool material.

[0153] Preferably, but by no means exclusively, the sharpening insert is made of ceramic and / or stone and / or diamond. Needless to say, any other material may also be used.

[0154] The grinding insert can be made of metal. The metal can be a hard metal, a metal alloy, or a bimetal.

[0155] In another embodiment, the grinding insert is made of cubic boron nitride or at least one type of plastic.

[0156] Needless to say, the sharpening insert can also be made of composite materials.

[0157] Furthermore, the grinding insert can be a synthetic abrasive stone. Abrasives such as corundum, oxide ceramics, non-oxide ceramics, and silicon carbide can be used, exemplarily and by no means exclusively, in this context.

[0158] The sharpening inlay can also be made of natural terrazzo. Exemplarily and by no means exclusively, the sharpening inlay can be made of mica or phyllite.

[0159] In other embodiments, the sharpening insert can be an oilstone and / or diamond stone.

[0160] By using different materials for preparing the grinding inserts, grinding inserts that can be used for grinding and / or fine grinding and / or polishing and / or for saw blades can be made.

[0161] Another embodiment of the invention proposes that these sharpening inserts have at least two distinct regions for producing different sharpening effects and / or sharpening intensities.

[0162] When guiding the cutting edge of the tool between the preferably V-shaped grinding rods and when bringing the cutting edge against the grinding insert, different grinding inserts and / or different areas of a single grinding insert can be used depending on the type and purpose of the tool.

[0163] Furthermore, it is proposed that, in the sharpening position, each sharpening rod touches one side of the cutting edge of the tool with its sharpening insert.

[0164] Additionally, in the case of a serrated tool, the cutting edge can be angled relative to the longitudinal axis of the base and inserted between preferably V-shaped grinding bars. This sharpens and / or fine-grinds and / or polishes the individual teeth of the serration.

[0165] Its advantage is that all the sharpening inserts and / or all areas of the corresponding sharpening inserts arranged at the sharpening bar can be used to grind and / or fine grind and / or polish the tool.

[0166] By applying greater pressure to the cutting edge against the restoring force of the spring, the cutting edge reaches the grinding insert in the lower region of the spring and / or the lower region of the grinding rod. This allows for precise grinding and / or fine grinding and / or polishing, especially of the blunt edge of the cutting edge.

[0167] By applying less pressure to the cutting edge, due to the spring's restoring force, the cutting edge only reaches the area of ​​the grinding insert and / or the area of ​​the grinding insert at the open end of the grinding rod. This less pressure on the cutting edge allows for gentler grinding and / or fine grinding and / or polishing.

[0168] The sharpening rod and / or sharpening insert and / or retaining device and / or spring and / or pin serving as pivot axis can be assembled into a replacement module.

[0169] This ensures that the sharpening device can be easily assembled by the user. When the sharpening insert becomes dull after prolonged use, the user can remove the entire replacement module from the sharpening device and replace it with a new replacement module.

[0170] When the sharpening bar and / or sharpening insert and / or retaining device and / or spring and / or pin forming the pivot axis is damaged, a replacement module can be inserted into the sharpening device.

[0171] The replacement module can be replaced by the user without any problems, and there is no risk of injury to the user's hands.

[0172] Grinding Inlay

[0173] In addition to the sharpening insert, at least one grinding insert is arranged at the sharpening rod at an angle to the longitudinal axis of the sharpening insert.

[0174] The sharpening insert is located in the area at the upper end of the slot, relative to the slot between the sharpening rods.

[0175] Conversely, the grinding insert is arranged in the region at the lower end of the slot, relative to the slot between the grinding rods.

[0176] The present invention proposes that the grinding insert is made of hard metal and / or hardened metal and / or sintered metal and / or ceramic and / or stone.

[0177] The polished insert can be formed as at least one hard metal plate.

[0178] Needless to say, polished inlays can also be made from other materials.

[0179] Working area of ​​the grinding tool insert

[0180] The sharpening insert includes the sharpening edge and / or fine grinding edge and / or polished surface as the working area.

[0181] The sharpening insert is formed in the shape of an elongated and / or rod-shaped piece. The sharpening insert is disposed on the surface of the sharpening rod.

[0182] The sharpening insert extends along the longitudinal axis of the sharpening rod.

[0183] The sharpening rods supporting the sharpening insert are arranged in a V-shape relative to each other. The sharpening rods can pivot about the pivot axis in a mirror manner.

[0184] As the sharpening rods pivot about the pivot axis, the two sharpening rods and the sharpening inserts arranged thereon move radially relative to each other in a mirror manner.

[0185] Polished surface

[0186] The grinding insert includes at least one surface that is formed as a polished surface. The polished surface of the grinding insert closes with the surface of the grinding rod.

[0187] The polished surface is a flat and even surface.

[0188] Polished surfaces are arranged at the grinding inserts such that these grinding inserts move radially relative to each other in a mirror manner as the grinding rod pivots about the pivot axis.

[0189] To polish the knife, the cutting edge is pulled horizontally across the sharpening bar. Here, the beveled edge of the cutting edge slides along the polishing surface of the V-shaped sharpening bar on both sides.

[0190] When polishing a cutting tool, the beveled edge of the previously ground and / or fine-grinded blade is polished. Through the polishing process, the blade edge is additionally densified and further sharpened.

[0191] The grinding tool insert is transverse to its longitudinal axis, and its surface has one end face on each of its two sides.

[0192] One end face is formed as the grinding edge. The opposite end face forms the fine grinding edge.

[0193] Sharpening edge

[0194] The edges of the sharpening tool are arranged approximately perpendicular to the pivoting direction of the sharpening rod around the pivot axis. The sharpening edges of the sharpening inserts are arranged relative to the V-shaped structure of the sharpening rods such that the sharpening edges of the sharpening inserts of both sharpening rods face the cutting edge of the tool.

[0195] The end face of the sharpening insert, which is formed as the edge of the sharpening tool, has an angle between 45° and 89° relative to the surface of the sharpening insert. Needless to say, the end face of the sharpening insert, which is formed as the edge of the sharpening tool, can also have other angles relative to the surface of the sharpening insert.

[0196] To sharpen the tool, the cutting edge and tip are pulled downwards across the sharpening bar. Here, the beveled edge of the cutting edge slides along the sharpening edge of the V-shaped sharpening bar on both sides.

[0197] When sharpening a cutting tool, material is removed from the bevel of the cutting edge as the blade is pulled through.

[0198] Fine grinding of edges

[0199] The fine grinding edges are arranged approximately perpendicular to the pivoting direction of the sharpening rod around the pivot axis. The fine grinding edges of the sharpening inserts are arranged relative to the base such that the fine grinding edges of the sharpening inserts of both sharpening rods are opposite to the base.

[0200] Finely ground edges are formed into curved edges. Finely ground edges can have round, elliptical, or arc-shaped profiles. Finely ground edges can also have other geometric shapes.

[0201] The finely ground edge is embedded in the sharpening insert. The sharpening insert has a carrier to hold it in place at the sharpening rod.

[0202] The finely ground edge has at least a partial profile. This profile has a roughened, sandpaper-like surface. The profile includes uneven portions, preferably protrusions and / or longitudinally or laterally extending grooves. They may also have any other geometry.

[0203] The finely ground edges are made of a material that is harder than the material used to make the blade.

[0204] To finely sharpen the tool, pull the blade and tip upwards across the sharpening bar. Here, the beveled edge of the blade slides along the fine-sharpening edge of the V-shaped sharpening bar on both sides.

[0205] During fine grinding of cutting tools, steel chips or material filaments left on the cutting edge due to the grinding process are removed from the cutting edge of the tool.

[0206] The unevenness left on the blade after the grinding process is smoothed out during the fine grinding of the blade.

[0207] knives

[0208] This sharpening device is preferably designed not only for grinding, but also for fine grinding and polishing of knives, scissors, and other tools for chip-free cutting or slicing.

[0209] The term "knife" refers to a tool used for cutting. A knife consists of a cutting edge and a handle. The cutting edge is used to cut materials and / or objects that have a lower hardness than the material on the cutting edge of the handle.

[0210] In the context of this invention, knives are categorized as work knives, professional knives, and leisure knives. Knives can be part of a cutlery set or as household and kitchen knives. Furthermore, knives also exist as industrial knives, combat knives, razors, and / or ceremonial knives.

[0211] This list of knives should not be considered exclusive, but merely exemplary. Knives may also have other forms and / or functions.

[0212] Kitchen knives, in particular, are general-purpose knives or spickmessers. In addition, boning knives, bread knives, serrated garnish knives, sashimi knives, fruit knives, vegetable knives, cheese knives, cooking knives, Parmesan knives, peeling knives, ham or salmon knives, tomato knives, carving knives or meat cutters, and cleavers are known. This list should not be considered exclusive, but merely exemplary.

[0213] In terms of construction, a cutting tool consists of a cutting edge for cutting. The cutting edge has a bevel as the cutting edge.

[0214] The bevel is the thinnest part of the blade in terms of material thickness. The bevel forms the area of ​​the blade used for cutting the material.

[0215] spring

[0216] A spring is a metallic technical component that can elastically deform. A spring generates a restoring force, which returns the spring from its sharpening position to its resting position after the force acting on it disappears.

[0217] The springs in this sharpening device have variable spring pressure depending on the type and quality of the tool being sharpened. In this way, optimal sharpening results can be achieved.

[0218] The spring is made of at least one metallic material.

[0219] The spring can be formed as a torsion spring. Exemplarily and by no means exclusively, a torsion spring can be a rod spring or a coil spring.

[0220] Springs can also be formed as bending springs. Bending springs can have the shape of leaf springs or be formed as wire springs. Additionally, springs can be rod springs.

[0221] Needless to say, other cross sections can also be used, such as square or rectangular cross sections.

[0222] Each spring is assigned to a sharpening rod. The spring is fixed at its lower end in a retaining device. In the open end region of the slot, the corresponding spring is fastened to the associated sharpening rod.

[0223] The two sharpening rods and the retaining device for receiving the two springs are pivotable supports in the region of the closed end of the slot about a common pivot axis, which enables the sharpening rods and their respective associated springs to pivot at the same angle and through the same stroke against the spring's restoring force.

[0224] The arrangement of the springs on the side of the grinding rod facing the base allows for a damage-free arrangement of the springs.

[0225] By placing springs at the retaining device and the sharpening rod respectively, the restoring force transmitted from the sharpening rod to the sharpening insert is directly affected.

[0226] The two sharpening rods and the springs respectively arranged on the sharpening rods can change the restoring force that the user can apply to the blade in the upper and / or middle and / or lower regions of the sharpening insert.

[0227] The cutting edge of the tool does not pose a risk of accidentally touching the spring when it is guided into the slot of the preferredly arranged guide element (which could lead to two-dimensional blunting of the spring).

[0228] Because the sharpening rod is designed as a protective structure, there is no risk of the user getting injured by touching the sharpening insert and / or spring with their fingers.

[0229] The corresponding spring is not fastened to the base, but to the grinding rod and the holding device.

[0230] The spring's restoring force is variable. This allows the pressure exerted on the cutting edge of the tool via the grinding insert to be adapted to the type and quality of the tool and / or to its corresponding function.

[0231] Grinding of cutting tools

[0232] During grinding, material is removed from the blade in the beveled area.

[0233] To sharpen the cutting edge of a tool, the cutting edge and its tip are guided downwards between sharpening rods. These sharpening rods are arranged in a V-shape.

[0234] As the blade is guided between the sharpening rods, the beveled edges of the blade touch the sharpening inserts of the sharpening rods arranged opposite each other on both sides.

[0235] As the user inserts the blade between the sharpening rods, the pressure applied by the blade onto the sharpening insert causes the two springs, along with the sharpening rods connected to the springs and the sharpening insert located on the sharpening rods, to resist the springs' resting force and transition from the resting position to the sharpening position.

[0236] As the cutting edge of the tool is released from the sharpening insert of the sharpening bar and the tool is pulled out of the V-shaped structure of the sharpening bar, the pressure on the spring decreases, and the two springs, as well as the sharpening bar connected to the springs and the sharpening insert arranged on the sharpening bar, change from the sharpening position to the resting position by the restoring force of the springs.

[0237] The user pulls the blade along the opposing sharpening inserts from the handle to the tip of the blade.

[0238] Sharpening can also make very dull tools usable again in a way that corresponds to their function.

[0239] It goes without saying that the same method can be used to grind the tool, but from the tip of the tool to the shank.

[0240] To reach the grinding insert, the user guides the cutting edge of the tool into the slot in the V-shaped structure of the grinding rod.

[0241] The user guides the cutting edge of the knife toward the lower end of the slot, and then guides it through the area of ​​the sharpening insert of the sharpening rod.

[0242] In the area at the lower end of the slot, on the longitudinal axis behind the grinding insert, the cutting edge of the tool contacts the grinding insert of the respective grinding rod.

[0243] For example, it is assumed that the polished insert is formed as a hard metal plate.

[0244] In other words, users especially guide very dull and worn cutting edges into the V-shaped structure of the sharpening bar in the direction of the lower end of the slot.

[0245] In the longitudinal axis of the sharpening insert, but axially behind the sharpening insert, the user brings the blade into contact with the hard metal plates of the opposing sharpening rods.

[0246] The blade is sharpened by guiding the grinding inlay along both sides of the blade, especially the handle of the knife, up to the tip of the blade.

[0247] The severely worn and dull blade is re-sharpened using a grinding insert. Scraped metal particles are removed from the blade. The blade is then reconstructed.

[0248] After the sharpening process at the grinding insert of the sharpening rod is completed, the blade is sent to the grinding insert of the sharpening rod for fine grinding and / or polishing and / or smoothing.

[0249] Fine grinding

[0250] Fine grinding of the tool is achieved during fine grinding. Burrs formed during the grinding process are removed during fine grinding.

[0251] By finely grinding the beveled edge of the blade, the blade is smoothed after the grinding process.

[0252] In order to use this sharpening device to finely sharpen the blade, the tip of the blade is guided upward through the V-shaped structure of the sharpening rod.

[0253] As the blade is guided between the sharpening rods, the beveled edges of the blade touch the sharpening inserts of the sharpening rods arranged opposite each other on both sides.

[0254] After the blade is placed on the sharpening inserts of the sharpening rod, which are arranged opposite each other, the restoring force of the spring pulls the blade along the edge of the sharpening insert from the handle to the tip of the blade at the bevel of the blade.

[0255] This sharpening device is used to finely sharpen the cutting edge of a tool, keeping the bevel of the cutting edge sharp for a long time.

[0256] polishing

[0257] In this invention, "polishing" is understood as the smoothing and fine finishing of the beveled edge of the cutting edge of the tool.

[0258] The rough tips of the cutting edge surface structure left during grinding and / or fine grinding of the tool are plastically and / or semi-plastically deformed and flattened.

[0259] Furthermore, minimal material removal is performed on the beveled edge of the cutting edge during polishing. Similarly, the polishing process can be used to fill in depressions in the beveled area of ​​the cutting edge.

[0260] When polishing the beveled edge of the blade, the user resists the restoring force of the associated spring and pushes the sharpening rod and the sharpening insert arranged on it outward relative to the center line of the V-shaped structure of the sharpening rod.

[0261] The cutting edge of the tool is guided into the slot approximately parallel to the base of the sharpening device.

[0262] The beveled edge of the cutting edge of the knife contacts the grinding insert of the two grinding rods arranged at an angle to each other. For polishing, the cutting edge of the knife is guided with the beveled edge of the cutting edge approximately parallel to the upper side of the base and along the grinding insert.

[0263] During polishing, the bevel of the cutting edge of the tool moves along the grinding insert by the user without additional restoring force.

[0264] Grinding of serrated tools

[0265] In this invention, the term "serration" is understood to refer to the cutting edge of a tool that has so-called serrations.

[0266] To sharpen the cutting edge of a serrated knife, the cutting edge is horizontally guided between the sharpening rods. These sharpening rods of the sharpening device are arranged in a V-shape.

[0267] As the serrated blade is guided between the sharpening rods, the beveled edges of the blade touch the sharpening inserts of the sharpening rods arranged opposite each other on both sides.

[0268] As the user inserts the blade between the sharpening rods, the pressure applied by the blade onto the sharpening insert causes the two springs and the sharpening rods connected to the springs to resist the springs' resting force and move from the resting position to the sharpening position.

[0269] The tip of the tool pivots relative to the pivot axis toward the serrated side opposite to the cutting edge. The pivot axis extends downward through the base of the sharpening device.

[0270] When sharpening a serrated tool, the user pulls the cutting edge of the tool horizontally along the sharpening insert of the sharpening bar under moderate restoring force.

[0271] As the cutting edge of the tool is released from the sharpening insert of the sharpening bar and the tool is pulled out of the V-shaped structure of the sharpening bar, the pressure on the spring decreases, and the two springs and the sharpening bar connected to the springs change from the sharpening position to the resting position by the restoring force of the springs.

[0272] Its advantage is that the sharp serrations can be ground on one side of the blade.

[0273] By sharpening the saw with the help of this grinding device, the individual teeth in the saw remain unchanged.

[0274] Advantages of the present invention

[0275] By utilizing the mirror-like pivoting of the sharpening rod, the relevant sharpening inserts can also pivot at the same angle and along the same stroke relative to each other.

[0276] Due to its design, the restoring force acts more directly on the corresponding grinding rod.

[0277] The sharpening device has thus proven advantageous because, judging from its appearance, not only the base area but also the area of ​​the gripping element can be used as advertising space.

[0278] The discharge device can effectively prevent dirt from being caused by wear and / or by the sharpening plate (preferably made of ceramic-type hard metal) of the sharpening device.

[0279] Another advantage of this sharpening device is that the sharpening efficiency of the sharpening insert can remain constant over a long period of time.

[0280] This sharpening device can also be used for larger tools because the enlarged base prevents it from tipping over.

[0281] The two sharpening rods and the holding device are supported at the base by a pivot axis, which has the advantage that the sharpening insert of the sharpening rod can be used for grinding, fine grinding and / or polishing the tool along its entire length.

[0282] The two sharpening rods are arranged in a roughly V-shape relative to each other, allowing the cutting edge of the knife to be ground and / or fine-ground and / or polished along the entire length of the two sharpening inserts.

[0283] Another advantage of this invention is that the grinding device can have a reduced number of individual parts and components. This can further reduce manufacturing costs.

[0284] The design of this sharpening device makes installation easier for users and / or manufacturers. Furthermore, it allows for a more robust structure.

[0285] The widening of the sharpening rod transversely to the longitudinal axis of the base allows for a greater distance from the blade and / or sharpening insert to the user's hand.

[0286] Users can adjust the restoring force of the tool against the grinding insert to improve grinding and / or fine grinding and / or polishing of the tool according to its type and / or variety.

[0287] Other examples and embodiments of the invention are described in detail below with reference to the accompanying drawings.

[0288] In the attached diagram:

[0289] Figure 1 The sharpening device is shown in a front view from the perspective of the housing.

[0290] Figure 2 The sharpening device is shown in the front view, with the sharpening rod in the resting position.

[0291] Figure 3 The sharpening device and guide elements are shown in the side view.

[0292] Figure 4 The sharpening device is shown in an exploded view in the side view.

[0293] Figure 5 A series of images illustrate the process of finely sharpening knives using this sharpening device.

[0294] Figure 6 The grinding tool insert and its working range are shown, and

[0295] Figure 7 The grinding tool insert is shown in a side-section.

[0296] Figure 1 A sharpening device is shown, which has a base 2 and a guide element 10 arranged on the upper side of the base 2.

[0297] The sharpening device is in Figure 1 The image is shown in front view.

[0298] exist Figure 1 In the center, two sharpening rods 24 and 25 are arranged after the guide element 10 in the direction of observation.

[0299] exist Figure 1 The image shows the housing 4 of the base 2.

[0300] The housing 4 includes a surrounding outer wall 14 and a surrounding inner wall 12. (See also...) Figure 2 )

[0301] A fastening device is arranged on the lower side of the housing 4 of the base 2.

[0302] exist Figure 1 The fastening device shown in Figure 1 This forms what is known as a vacuum plate.

[0303] By means of the operating lever 45 between the fastening device and the bottom surface 46, a vacuum is generated between the vacuum plate of the fastening device and the bottom surface 46, and the sharpening device 11 can be securely fastened to the bottom surface 46 in a non-loose manner using the vacuum. (See also) Figure 2 )

[0304] The discharge device 17 extends along the inner wall 12 of the housing 4. The discharge device 17 also... Figure 2 It is displayed in the middle.

[0305] Using the discharge device 17, the dirt particles and fluids that have entered the internal space 49 of the housing 4 are discharged again from it.

[0306] Figure 1As shown, the ends 47 and 48 of the sharpening rods 24 and 25 extend into the internal space 49 of the housing 4.

[0307] The ends 47 and 48 of the sharpening rods 24 and 25 are connected to the inner wall 12 of the housing 4 via springs 29, respectively.

[0308] exist Figure 1 In the example, spring 29 is formed as a compression spring.

[0309] exist Figure 1 The V-shaped structure 5 in the sharpening position 1 shows the sharpening rods 24 and 25.

[0310] In the sharpening position 1, the ends 47 and 48 of the sharpening rods 24 and 25 abut against the inner wall 12 of the housing 4. At the same time, the springs 29 associated with the inner wall 12 surrounding the housing 4 are pushed together against the spring action in the direction of the inner wall 12 of the housing 4.

[0311] The two sharpening rods 24 and 25 are fixed to the inner wall 12 of the housing 4 of the base 2 via a single fixing point 42 in the internal space 49 of the housing 4.

[0312] The sharpening rods 24 and 25 extend through the pin 21 about the pivot axis 22 of the housing 4 of the base 2.

[0313] In the sharpening position 1 of sharpening rods 24 and 25, sharpening rods 24 and 25 are shown in V-shape 5.

[0314] Sharpening rods 24 and 25 pass through the (not shown) cutter from rest position 19 (see...) Figure 2 ) to Figure 1 The sharpening position is 1.

[0315] Each sharpening bar 24; 25 here has at least one sharpening insert 30.

[0316] The cutting edge 60 (not shown) is guided into the V-shaped structure 5 of the sharpening rods 24 and 25 at the open end 7. Within the slot 6, the cutting edge 60 moves in a direction toward the opposite closed end 8.

[0317] By inserting the cutting tool 60 in the direction toward the closed end 8 of the slot 6 of the guide element 10, the two sharpening rods 24 and 25 are separated from each other by the force against the corresponding springs 29.

[0318] exist Figure 1 In the middle, the sharpening rods 24 and 25 are approximately flush with the slot 6 of the guide element 10 in their V-shaped structure 5 (see also...). Figure 2 ).

[0319] In the region at the lower end 8 of slot 6, on the longitudinal axis 34 behind the grinding insert 30 (see...) Figure 6 The cutting edge 60 of the tool contacts the grinding inserts 26 and 27 of the corresponding grinding rods 24 and 25.

[0320] In other words, the user, in particular, guides the cutting edge 60 of a very dull and worn knife into the V-shaped structure 5 of the sharpening rod 24; 25 in the direction toward the lower end 8 of the slot 6.

[0321] In the longitudinal axis 34 of the sharpening insert 30, but axially behind the sharpening insert 30, the user makes the blade 60 (not shown) touch the hard metal plates (grinding inserts 26; 27) of the sharpening rods 24; 25 that are opposite each other.

[0322] Figure 2 Basically corresponds to Figure 1 The difference lies in the fact that these two sharpening rods, 24 and 25, are relative to... Figure 1 The sharpening position 1 has been changed to the resting position 19.

[0323] These two sharpening rods, 24 and 25, are... Figure 2 In the rest position 19, it is flush with the two arms 50; 51 of the guide element 10.

[0324] Inside the housing 4, in the internal space 49, the two ends 47 and 48 of the sharpening rods 24 and 25 abut against the movement limiter 52.

[0325] The movement limiter 52 secures the two sharpening rods 24 and 25 in their rest position 19.

[0326] Spring 29 is formed as a compression spring, which is pushed away by the inner wall 12 of housing 4 in the rest position of sharpening rods 24 and 25 and presses sharpening rods 24 and 25 into the internal space 49 of housing 4.

[0327] The fixing points 42 of the two sharpening rods 24 and 25 are arranged on the inner wall 12 of the housing 4.

[0328] The pivot axis 22 of pin 21 extends along the longitudinal axis 53 of pin 21.

[0329] Figure 3 A side view of the housing 4 of the base 2 is shown, in which the sharpening rods 24 and 25 extend from the housing 4.

[0330] exist Figure 3 In the illustration, guide elements 10 are arranged in the side view.

[0331] The guide element 10 extends parallel to the grinding rods 24 and 25, respectively.

[0332] At the ends of the sharpening rods 24 and 25 opposite to the housing 4, these guide elements 10 are connected to each other via the web 54 (see reference). Figure 3 ).

[0333] exist Figure 3 The right side view of the diagram shows a lever 45, which is assigned to the fastening device.

[0334] The housing 4 of the base 2 is fastened to the bottom surface 46 using a fastening device.

[0335] Figure 4 An exploded view of the sharpening device 11, which has a housing 4 and half-shells 56 and 57, is shown.

[0336] The two half-shells 56 and 57 of the housing 4 form the internal space 49 of the housing 4 in the assembled state (not shown).

[0337] On the upper side of the two half-shells 56 and 57 of the housing 4 facing the sharpening rods 24 and 25, the half-shells 56 and 57 of the housing 4 each carry a guide element 10.

[0338] A support member 58 and a support member 59 are arranged on the inner wall 12 of the housing 4. The support members 58 and 59 are used to fix the pin 21 of the sharpening rod 24 to the inner wall 12 of the housing 4.

[0339] The only fixing point 42 of the sharpening rods 24 and 25 at the housing 4 is formed by the two supports 58 and 59 at the housing 4 for the pin 21.

[0340] Pin 21 is integrally connected to the sharpening rod 24.

[0341] The pin 21 of the sharpening rod 24 passes through the through hole 15 of the sharpening rod 25 with its long end.

[0342] The longitudinal axis 53 of pin 21 forms the pivot axis 22 of the grinding rods 24 and 25 relative to the housing 4 of the base 2.

[0343] The sharpening rod 25 is pushed onto and / or fastened to the pin 21 of the sharpening rod 24 through its through hole 15.

[0344] Depending on whether the two sharpening rods 24 and 25 are in the sharpening position 1 or the resting position 19 relative to each other, the two sharpening rods 24 and 25 pivot relative to each other about the pivot axis 22 of the pin 21.

[0345] Figure 5 A series of pictures, a to f, illustrate a process in which the cutting tool and the cutting edge 60 are guided along the insert 30 of the sharpening rods 24 and 25 for fine sharpening of the cutting edge 60.

[0346] Figure 5The figure shows the sharpening device of the present invention having a base 2 and a guide element 10, which is arranged in front of the sharpening rods 24 and 25 in the front view of the sharpening device 11.

[0347] The guide element 10 is arranged on the following side of the housing 4 of the base 2: on which the sharpening rods 24 and 25 extend from the internal space 49 of the housing 4.

[0348] In position a, the cutting edge 60 of the tool is guided into the slot 6 at the upper end 7 of the slot 6.

[0349] Here, the blade 60 is positioned so that it rests against the edge 31 of the sharpening insert 30 on both sides.

[0350] As the blade 60 is pressed in against the resistance of springs 29 (not shown) arranged opposite each other in the housing 4, the sharpening rods 24 and 25 are guided from the rest position 19 (see position a) to the sharpening position 1 (illustrated bf).

[0351] In order to finely grind the cutting edge 60 of the tool, corresponding to the figure be, the force of the spring 29 continues to guide the cutting edge 60 in the direction of the lower end 8 of the slot 6.

[0352] As the blade 60 moves toward the lower end 8 of the slot 6, the sharpening rods 24 and 25 further separate from each other against the force of the spring 29 (not shown).

[0353] The other assumption is that the tool has a cutting edge 60 on its longitudinal side.

[0354] Corresponding to figures a to d, the cutting edge 60 is guided into the slot 6 of the sharpening device. As the pressure of the cutting edge 60 against the sharpening rods 24 and 25 increases, the cutting edge 60 is guided deeper into the slot 6.

[0355] Here, as the blade 60 continues to be guided into the slot 6 of the guide element, the sharpening rods 24 and 25 change from the rest position 19 to the sharpening position 1.

[0356] To sharpen the blade, the tip of the cutting edge 60 is inserted downwards between the sharpening rods 24 and 25. Then, the cutting edge 60 is passed from back to front through the sharpening device 11 with the tip lowered.

[0357] The cutting edge 60 is then polished. For polishing, the cutting edge 60 is inserted between the sharpening rods 24 and 25 with the tip of the tool facing upward. The cutting edge 60 is guided from back to front along the sharpening rods 24 and 25 of the sharpening device 11 against the pressure of the spring 29 (not shown) with the tip raised.

[0358] In another example, the cutting edge 60 of the tool is a cutting edge 60 with side serrations.

[0359] It is assumed, by way of example and by no means exclusive, that, viewed from the back of the blade, the serrations are located to the right of the cutting edge 60.

[0360] To further sharpen and / or polish the serrations of the tool, the tool is horizontally guided between sharpening rods 24 and 25. Simultaneously, the cutting edge 60 is pivoted in its horizontal orientation with its tip facing the side of the cutting edge 60 away from the serrations. If the cutting edge 60 is guided horizontally from back to front along sharpening rods 24 and 25 in this position, the side of the cutting edge 60 containing the serrations is ground and / or polished.

[0361] Figure 6 A sharpening insert 30 is shown, which is formed in an elongated and / or rod shape. The sharpening insert 30 is disposed on the surface 37 (not shown) of the sharpening rod 24; 25.

[0362] The sharpening insert 30 has a surface 35 that is closed by the surface 37 (not shown) of the sharpening rods 24 and 25.

[0363] The sharpening insert 30 extends along the longitudinal axis of the sharpening rods 24 and 25.

[0364] The sharpening rods 24 and 25 (not shown) supporting the sharpening insert 30 are arranged in a V-shape relative to each other. The sharpening rods 24 and 25 can pivot about the pivot axis 22 in a mirror manner.

[0365] As the sharpening rods 24 and 25 pivot about the pivot axis 22, the two sharpening rods 24 and 25 and the sharpening inserts 30 arranged thereon move in a mirror manner relative to each other in the radial direction.

[0366] The grinding insert 30 includes at least one surface 35 formed as a polishing surface 33. The polishing surface 33 is planar and flat.

[0367] Polished surfaces 33 are arranged at the grinding inserts 30 such that when the grinding rods 24 and 25 pivot about the pivot axis 22, these grinding inserts move radially relative to each other in a mirror manner.

[0368] To polish the tool, the cutting edge 60 (not shown) is pulled horizontally across the sharpening rod 24; 25. Here, the bevel of the cutting edge slides on both sides along the polishing surface 33 of the V-shaped sharpening rod 24; 25.

[0369] During the polishing process, the beveled edges of the previously ground and / or fine-grinded blade are polished. The polishing process further densifies the blade 60 and sharpens it further.

[0370] The surface 35 of the grinding tool insert 30 has an end face on each side, which is transverse to the longitudinal axis 34 of the grinding tool insert 30.

[0371] One end face is formed as a grinding edge 31. The opposite end face forms a fine grinding edge 32.

[0372] The sharpening edge 31 is arranged approximately at right angles to the sharpening rods 24 and 25 about the pivot axis 22. The sharpening edge 31 of the sharpening insert 30 is arranged relative to the plate such that the sharpening edges 31 of both sharpening rods 24 and 25 face the plate.

[0373] The end face of the sharpening insert 30, which is formed as the sharpening edge 31, has an angle 38 of approximately 88° with respect to the surface 35 of the sharpening insert 30.

[0374] It goes without saying that the end face formed as the edge of the sharpening tool 31 can also have another angle relative to the surface 35 of the sharpening tool insert 30.

[0375] To sharpen the tool, the cutting edge 60 (not shown) is pulled across the sharpening rod 24; 25 with the tip of the tool pointing downwards. Here, the bevel of the cutting edge 60 slides on both sides along the sharpening edge 31 of the V-shaped sharpening rod 24; 25.

[0376] During the grinding of the cutting tool, material is removed from the bevel of the cutting edge 60 (not shown) as the cutting edge passes through.

[0377] The fine grinding edge 32 is arranged approximately perpendicular to the pivoting direction of the sharpening rods 24 and 25 about the pivot axis 22. The fine grinding edge 32 of the sharpening insert 30 is arranged relative to the plate such that the fine grinding edge 32 of the sharpening insert 30 of both sharpening rods 24 and 25 is away from the plate.

[0378] The finely ground edge 32 is formed as a curved edge. The finely ground edge 32 may have a circular or elliptical profile 39. The finely ground edge 32 may also have other geometries.

[0379] The finely ground edge 32 has at least a partial profile 39. The profile 39 has a roughened, sandpaper-like surface. The profile 39 includes uneven portions, preferably protrusions and / or longitudinally or laterally extending grooves. They may also have any other geometry.

[0380] The finely ground edge 32 is made of a material that is harder than the material used to make the blade.

[0381] To finely sharpen the tool, the cutting edge is pulled across the sharpening rod 24; 25 with the tip of the tool pointing upwards. Here, the bevel of the cutting edge slides on both sides along the fine-grinding edge 32 of the V-shaped sharpening rod 24; 25.

[0382] During fine grinding of cutting tools, steel chips or material filaments left on the cutting edge due to the grinding process are removed from the cutting edge of the tool.

[0383] The unevenness left on the blade after the grinding process is smoothed out during the fine grinding of the blade.

[0384] Figure 7 Showing with Figure 6 The correspondingly laterally cut grinding tool insert 30.

[0385] The grinding insert 30 has a surface 35 that is formed as a polished surface 33. Figure 7 In the illustration, the two end faces of the grinding tool insert 30 are shown on the right and left sides of the surface 35 of the grinding tool insert 30.

[0386] One end face is formed as a grinding edge 31. A fine grinding edge 32 is arranged on the opposite end face.

[0387] The edge 31 of the sharpening tool extends at an angle 38 of approximately 88° relative to the surface 35 of the sharpening tool insert 30.

[0388] A finely ground edge 32 is shown on the opposite end face. Figure 7 The finely ground edge 32 shown has a profile 39, which includes grooves 40.

[0389] The finely ground edge 32 is formed into an arc shape and embedded in the grinding insert 30.

[0390] In order to fix the sharpening insert 30 to the sharpening rod 24; 25, the sharpening insert 30 has a carrier 41.

[0391] Figure Labels

[0392] 1. Sharpening position

[0393] 2 bases

[0394] 3. Sharpening rod plane

[0395] 4 housings

[0396] 5. V-shaped structure of the sharpening rod

[0397] 6 slots

[0398] 7. Upper end of the slot

[0399] 8. Lower end of the slot

[0400] 9-slot inlet area

[0401] 10 guiding elements

[0402] 11. Sharpening device

[0403] 12. Inner wall of the shell

[0404] The centerline of the 13 slots

[0405] 14. Outer wall of the shell

[0406] 15 Through holes in the sharpening rod

[0407] 16-pin

[0408] 17 Discharge device

[0409] 18 Anti-loosening device

[0410] 19 rest positions

[0411] 20 gripping elements

[0412] 21. Pin of the sharpening rod

[0413] 22 Pivot axis; pin

[0414] 23. The side of the sharpening rod away from the guide element

[0415] 24 Sharpening rods with pins

[0416] 25 Sharpening Rod

[0417] 26 polishing inlays

[0418] 27 Grinding Inlays

[0419] 28. Stay Free

[0420] 29 springs

[0421] 30 Grinding Tool Inlay

[0422] 31 Sharpening edge

[0423] 32 Fine grinding edge

[0424] 33 polished surface

[0425] 34. Longitudinal axis of the grinding tool inlay

[0426] Surface of 35 Grinding Tool Inlay

[0427] 36. Stay Free

[0428] 37 Sharpening rod surface

[0429] 38 degrees

[0430] 39 outlines

[0431] 40 grooves

[0432] 41. Carrier of the sharpening tool inlay

[0433] 42 fixed points

[0434] V-shape with 45 fixed points

[0435] 46 bottom

[0436] 47. The end of the sharpening rod

[0437] 48 The end of the sharpening rod

[0438] 49 Interior Space

[0439] 50 guide element arms

[0440] 51 Guide element arm

[0441] 52 Movement Restriction Components

[0442] The longitudinal axis of pin 53

[0443] 54. Web of the guiding element

[0444] 55 groove

[0445] 56 shell half shell

[0446] 57 shell half shell

[0447] 58 support components

[0448] 59 Support components

[0449] 60 knives / cutting edge of knives

[0450] 61 Fastening device

Claims

1. A knife sharpening device, comprising: At least two sharpening rods (24; 25), the at least two sharpening rods are pivotally supported at the base (2) and present a V-shape relative to each other, wherein the V-shape of the sharpening rods (24; 25) relative to each other is used to insert the cutting tool. The sharpening rods (24; 25) each have at least one sharpening insert (30), and the sharpening rods (24; 25) in the rest position (19) are respectively fixed in their V-shaped structures by the force of the associated springs (29) at a predetermined distance relative to each other; as the cutting tool is inserted into the V-shaped structure of the sharpening rods (24; 25), when the cutting tool contacts the sharpening insert (30), the sharpening rods (24; 25) in the sharpening position (1) are able to separate from each other against the force of the associated springs (29); and A single fixing point (42) is provided therein, through which the sharpening rod (24; 25) is fixed to the base (2), and Below the single fixed point (42), each of the sharpening rods has an end (47, 48) facing the bottom of the base (2), and the associated spring (29) connects each end (47, 48) of the sharpening rod (24, 25) to the inner wall surface (12) of the housing (4) of the base (2) below the single fixed point (42).

2. The sharpening device according to claim 1, characterized in that, At least one guide element (10) is arranged on at least one side of the base (2), each guide element (10) having a slot (6), wherein the sharpening insert (30) is arranged in the region of the upper end (7) of the slot (6) at the sharpening rod (24; 25).

3. The sharpening device according to claim 2, characterized in that, The grinding inserts (26; 27) are arranged in the region of the lower end (8) of the slot (6) at the grinding rod (24; 25).

4. The sharpening device according to claim 3, characterized in that, The polished inserts (26; 27) are made of one of hard metal, hardened metal, sintered metal, ceramic, and stone.

5. The sharpening device according to claim 1, characterized in that, The base (2) has a fastening device at the end opposite to the sharpening rod (24; 25) so as to be fastened to the bottom surface.

6. The sharpening device according to claim 1, characterized in that, A gripping element (20) is arranged on at least one side of the base (2).

7. The sharpening device according to claim 1, characterized in that, In order to pivot the sharpening rod (24; 25), the pivot axis (22) is arranged at an angle to the base (2).

8. The sharpening device according to claim 1, characterized in that, At least one sharpening rod (24; 25) is movably supported relative to the base (2) via the single fixed point (42).

9. The sharpening device according to claim 1, characterized in that, The sharpening rod (24; 25) is formed as a protective body that protects the sharpening insert (30) from being touched by the user and / or from being damaged and / or from being soiled.

10. The sharpening device according to claim 1, characterized in that, At least one guide element (10) is arranged on at least one side of the base (2), each guide element (10) having a slot (6), wherein the slot is open at the end of the guide element (10) away from the base and closed at the end of the guide element (10) facing the base, and the V-shaped structure of the grinding bar (24; 25) and the slot (6) are arranged axially flush with each other.

11. The sharpening apparatus according to claim 10, characterized in that, The slot (6) in the guide element (10) has an upper end (7).

12. The sharpening device according to claim 1, characterized in that, The base (2) includes a housing (4), in which the sharpening rods (24; 25) are fixed to each other and / or to the base (2) via the single fixing point (42).

13. The sharpening apparatus according to claim 12, characterized in that, At least one discharge device (17) is provided on the inner wall surface (12) of the housing (4) of the base (2) and / or on the outer side of the housing (4).

14. The sharpening apparatus according to claim 12, characterized in that, A pin (21) is arranged in the housing (4), and at least one sharpening rod (24; 25) is rotatably supported at the pin.

15. The sharpening apparatus according to claim 12, characterized in that, The housing (4) is formed as a protective body that protects the springs (29) arranged at the respective sharpening rods (24; 25) from being touched by the user and / or from being damaged and / or from being soiled and / or from being seen.

16. The sharpening apparatus according to claim 1, characterized in that, The spring (29) is a compression spring or a tension spring.

17. The sharpening apparatus according to claim 1, characterized in that, A spring (29) is arranged at each of the sharpening rods (24; 25).

18. The sharpening apparatus according to claim 1, characterized in that, The spring (29) is a bending spring or a torsion spring.

19. The sharpening apparatus according to claim 1, characterized in that, At least one guide element (10) is arranged on at least one side of the base (2), each guide element (10) having a slot (6), wherein the restoring force of the spring (29) pointing to the centerline (13) of the slot (6) changes when the sharpening rod (24; 25) transitions from the rest position (19) to the sharpening position (1).

20. The sharpening apparatus according to claim 1, characterized in that, At least one guide element (10) is arranged on at least one side of the base (2), each guide element (10) having a slot (6), wherein, in the rest position (19), the distance between the two sharpening rods (24; 25) relative to each other is at most the width of the slot (6).

21. The sharpening apparatus according to claim 1, characterized in that, The grinding insert (30) comprises diamond and / or ceramic and / or stone.

22. The sharpening device according to claim 1, characterized in that, The sharpening insert (30) has areas with different sharpening effects and / or sharpening intensities.

23. The sharpening device according to claim 1, characterized in that, The sharpening rod (24; 25) and / or the sharpening insert (30) and / or the base (2) and / or the spring (29) are respectively formed as replacement modules.

24. The sharpening device according to claim 1, characterized in that, The grinding insert (30) includes at least one of a grinding edge (31), a fine grinding edge (32), and a polished surface (33).

25. The sharpening apparatus according to claim 24, characterized in that, The sharpening edges (31) of the sharpening inserts (30) of the sharpening rods (24; 25) face each other.

26. The sharpening apparatus according to claim 24, characterized in that, The fine grinding edges (32) of the grinding inserts (30) of the two grinding rods (24; 25) face each other.

27. The sharpening apparatus according to claim 24, characterized in that, The polished surface (33) is the surface of the grinding tool insert (30), the surface having an end face transverse to the longitudinal axis (34) of the grinding tool insert (30), one end face being the grinding edge (31) and the opposite end face being the fine grinding edge (32).

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