DE202019101245U1 - Blade holder and abrasive-guided blade sharpening device - Google Patents

Abstract

A blade holder (10) for holding a blade, comprising: support means (20) forming a longitudinally and transversely extending support surface for laying the blade of a blade, and stopper means (30) for applying the blade back to a rest on the support surface Blade in the longitudinal direction of the support surface, wherein the support means (20) and the stop means (30) for adjusting the size of the support surface in the longitudinal direction are mutually adjustable, characterized in that the support means (20) and / or the stop means (30) modular in the manner are / is that the support surface is variable in size and / or contour.

Description

The present invention relates to a blade holder for a abrasive-guided blade grinding apparatus and a blade grinding apparatus having a blade holder.

STATE OF THE ART

In general, abrasive-guided blade sharpening devices of various manufacturers are known. Many such devices focus on the sharpening of knife blades. For this purpose, a knife blade to be ground is clamped horizontally on the back of the knife in a clamp held on a base in such a way that the blade projects out of the clamp toward the front. At a distance behind the ferrule a height adjustment device is provided with a relative to the ferrule height adjustable and pivotable upwards and in different directions guide bearing at the base. The guide bearing carries an abrasive holding means (hereinafter: an abrasive holder) at an adjustable grinding angle relative to the blade to be ground. This grinding angle can be adjusted by adjusting the height adjustment device to the blade of the knife. The grinding is done by moving an abrasive element held on the abrasive holder over the blade, the grinding angle being determined by the height-adjusted guide bearing. The abrasive is interchangeable, on the one hand to compensate for wear of the abrasive and on the other hand to meet requirements such as higher or lower erosion.

Examples of such grinding devices are the "Edge Pro Apex" or "KME sharpening system" available on the market. Other devices of comparable construction have the knife edge pointed up instead of forward, but also include means for establishing an angle of an abrasive hand to be passed over the knife sheath. The latter shows e.g. a device available at the time of filing under the trade name "Wicked Edge".

In the DE 20 2011 107 695 U1 The inventor of the present application has already addressed and solved some significant drawbacks of such prior art grinding apparatuses. Thus, the ferrule, which by design provides a blade support surface invariable in size and shape, is detached from a broad and stable plastic blade support on which a To be ground blade can be fixed by sunk in this blade support magnets. The blade support ensures a play-free and thus exactly reproducible blade support, which tilting and unwanted angle changes between the blade and abrasive up and down and left and right swivel be avoided. In addition, the blades can be easily aligned to reproducible markers and attacks, because such markers are easier to attach by the one-sided investment of the blade, without covering them on both sides, as to a ferrule, which is particularly advantageous in not straight shaped blades.

Starting from a device described in this utility model, which is sold under the name "Magna-Tec Delta S" and forms the basis for the preamble of claim 1 and claim 22 of the present application, the object of the invention is to provide the blade support to blades to adapt to practically any size and contour.

This object is achieved by a blade holder according to claim 1 or a blade grinding apparatus according to claim 22. Advantageous developments are the subject of the dependent claims.

SUMMARY OF THE INVENTION

According to the invention, the blade holder has a supporting device and / or an abutment device which is modularly and / or variably constructed in size and shape (cf. claim 1). The support device forms a longitudinally and transversely extending support surface for laying the blade blade of a blade. As blades hereby all types of blades are considered, which have a regular grinding, in particular knife blades, blades of scissors, axes and axles or razor blades. The stop device serves to position a blade lying on the support surface in a longitudinal direction of the support surface. The support device and the stop device are adjustable for changing the size of the support surface in the longitudinal direction against each other. In addition, the support means and / or the stopper are modular so constructed that the support surface is variable in size and / or contour. Due to the modular shape or variable size structure of support and stop device blades of different sizes can be safely and reproducibly placed on one or more of the support modules. As in the closest prior art, they are held there by, for example, blade holding magnets which are recessed in the blade support means and / or otherwise, e.g. by coating, be prevented from scratching the blade. Modules that are not required as a blade support (for example, with very small blades) can be adjusted so that they can not interfere with sharpening.

Advantageously, at least two support modules are arranged side by side in the transverse direction and in the longitudinal direction against each other in the support plane adjustable, in particular displaceable. Other adjustment would be a stepped offset against other components, flaps or turning individual modules, eg with off-center mounting of the modules together or on a body. Alternatively, it would also be possible to provide a special guide, in which the support modules are individually displaceable. However, the adjustability against each other does not have to be guaranteed by such additional components. The support modules can additionally be guided together by tongue and groove guides and / or only one module (or several support modules) can be guided at one or two points. At this support module then the other support modules can be performed. Further alternatively, a space between two outer guide stops can be provided, in which all support modules fit next to each other with very little lateral play, so that they are mutually displaceable without further structural measures.

Although the term "support modules" is used herein, it is not intended to be limiting in that, for example, the blade is necessarily to be located in the gravity field above these modules. It is also possible to realize the invention by using the blade e.g. from below or one side to a "support module" and held thereon (e.g., by magnets), as long as the corresponding "up / down" directional designations, etc., are adjusted accordingly. For the sake of simplicity of description, however, a blade placed "on top" on a "bearing surface" will be further discussed below.

In addition, it is expedient that at least two stop modules are provided, which lie next to each other in the transverse direction and analogous to the support modules are mutually adjustable. The same applies with regard to adjustment options and guidance as for the support modules; Moreover, it is advantageous if the stop modules are guided on or on the support modules or vice versa.

Further preferably, the support device has at least one support module, which is adjustable in the longitudinal direction relative to the stop device. By adjustability between the support module and the stop device, each blade can be placed so that it abuts against the stop device. Like in the DE 20 2011 107 695 U1 not explained in more detail, but realized in a similar form in the distributed device "Delta-S", it can be reproducibly placed on the blade support device every once laid for the first sharpening blade for documentation. A simplified version advantageously has a module which can not be adjusted to the stop device; Conveniently, an adjustable and an immovable module may cooperate to effect a back stop for each blade at at least one, preferably at two points. Likewise, at least one stop module can be adjustable relative to the support device and / or a stop module can not be adjusted. The mutual adjustability of stop and support modules, the flexibility of the blade holder is increased; by fixing to each other or Nichtverstellbarkeit the structure can be simplified.

Preferably, the support means not only at least two, but also an odd number of modules. As a result, a module can be arranged centrally in the transverse direction. The central module can (in the height direction of the blade grinding device) continue to be arranged between the longitudinal and transverse members on the one hand and the base body on the other. The central module and symmetrically arranged in the transverse direction on both sides of the central module outer modules can be conveniently arranged to provide different support surfaces for different blade sizes. If the number of support modules is increased too much, in addition to the more complex production, the adjustment duration also suffers, if more modules are to be adjusted appropriately. Therefore, in the current development, a total of seven modules has proven to be the most favorable compromise between flexibility and effort in hiring. However, to simplify the setting and save costs, for example, three or five support modules (and matching stop modules) can be used; conversely, flexibility can be increased with nine or more modules, albeit marginally, according to current experience. If there are the same number of modules on both sides of a central module that lies in the middle of the support surface, the support can be adjusted at least for symmetrical blades so that the blade is placed with one side of its blade mirror on the set support surface, sharpened from this side, then on the other Side of the blade mirror is placed without changing the support surface, and sharpened from the second side. In addition, the central module can be used to guide the modules on both sides of the outside.

Accordingly, it is preferable if the device has at least three and preferably seven stop modules, which are further preferably equally distributed around a central module on both sides. This central stop module is preferably located on the central support module and thus together with this between the longitudinal and transverse members on the one hand and the On the other hand, for this case, there are analogous advantages as for the case of the support modules described above.

This guiding the support modules together succeeds particularly well, if the support modules are each plate-shaped and / or lie flush next to each other in the transverse direction. Analogously, a guide of the stop modules to each other is particularly easy if at least two stop modules in the transverse direction next to each other and / or plate-shaped. Plate-shaped modules can abut one another on their respective side surfaces and thus guide one another. In addition, their surfaces form relatively large bearing surfaces on which the blade rests securely. Finally, panels are also easy to manufacture and easy to assemble, as they allow easy positioning, without e.g. roll away. Nevertheless, the invention may in principle also be used e.g. be constructed with rod or tubular modules.

The stopper is preferably adjusted in use so that it forms a 2-point stop for the blade. In particular, the central stop module preferably provides a 2-point stop. The blade is held in the support plane preferably by magnetic forces (and caused by this friction) on the support surface. The overlay on this surface is a (at least theoretical) three-point support; practically, the blade lies flat on the support device, and could move (without friction) in this plane "free" (slip). By a stop at two fixed points outside the support plane on the stop device, however, the blade is stored statically determined, in other words recorded exactly reproducible on the device. In addition, in contrast to a clamping no static overdetermination, so that due to the design no tension in the blade can be induced by the storage, which could deform the blade during grinding.

Particularly preferably, exactly one stop module is assigned to each support module. As a result, for each support surface of a single support module, a stop can be set independently of the stops on other support modules, which increases the adjustment compared to a case in which, for example, a stop modules is provided for two support modules, so that the support surface relative to the attack less flexible change. In the case of such an assignment of exactly one support to exactly one stop module is also useful that the stop module and the support module are arranged on top of each other. By placing the modules on top of each other, a single guide surface on the side of mating stop and support modules can be used to guide both, simplifying the construction of a corresponding blade holder. However, as already explained above, the arrangement "on top of each other" is only relevant with regard to the direction designations explained above for the blade sharpening device, not with regard to an actual orientation of the device in space.

More preferably, each stop and a support module is arranged on each other. By placing the modules on top of each other, a single guide surface on the side of mating stop and support modules can be used to guide both, simplifying the construction of a corresponding blade holder. However, as already explained above, the arrangement "on top of each other" is only relevant with regard to the direction designations explained above for the blade sharpening device, not with regard to an actual orientation of the device in space.

Further preferably, the blade holder already described in addition to the modules of the support and / or stop means as already discussed above, a cross member which carries the support means and / or the stop means. At this cross member, the respective modules can be stored adjustable and / or interchangeable. Preferably, the blade holder is attached via this cross member with other elements of the blade grinding device, in particular with a side rail together with height adjustment and an abrasive guide attached thereto and a main body of the device. An example of such parts associated with the invention will be explained in the description of embodiments.

In addition, the side-by-side support and stop modules, preferably transversely to this cross member, are adjustably fixed thereto. Thus, as a rule, "transverse to the cross member" means an adjustment substantially in the direction in which the sharpening device is pulled over a cutting edge of the blade to be sharpened, that is to say a direction referred to above as "forward" (and analogously "backwards") to the cutting nose of a blade to be sharpened. In addition, each at least one of the support and / or stop modules can be fixed fixed on the cross member and fixedly connected to this. Such an adjustable stop module facilitates the first time laying a blade, because already a storage at least four points (three in the support plane and a stop-fixed stop module) takes place. The blade can then be rotated only in the support plane to the position-fixed stop module, for example, the blade cutting edge (for the first time) optimally align. A fixation on two positionally fixed stop modules is possible and has the advantage that at least for "standard blades" no additional adjustments are required if the fixation on the support modules with fixed stop modules already sufficient for the above-discussed five-point storage. Furthermore, a setting via an adjustable stop module can be fixed and possibly documented, if a stop module which is fixed in position relative to the cross member or a support device is provided together with a position module which can be adjusted relative thereto.

In the case of two modules in use, a point-like point projecting from the blade to be sharpened (or else two projecting points on a module) is to be preferred in each case in order to produce the above-described five-point installation of the blade. Of course, the "tip" may also be e.g. line or hemispherical, since it is not intended to press into the back of the blade, but merely to create a defined contact point.

The above-mentioned side member preferably projects in the middle of the support surface from the cross member. As a result, a symmetrically mounted bearing surface can be formed on both sides of the longitudinal member along the cross member.

More preferably, longitudinal and transverse beams are releasably fixed to a base body. With such a construction, it is possible to construct the grinding apparatus even more modularly, for example by providing different side members for different grinding angle ranges, or retaining the base body and side members while using a blade holder of other dimensions in order to be able to use the entire blade grinding apparatus even more variably , In addition, the transverse and longitudinal members are preferably releasably engaged with each other. In this way, longitudinal and transverse beams can be mounted on each other, and fastened together on the base body. This can facilitate the assembly and adjustment of the blade sharpening device.

With particular preference, the blade holder can be brought into engagement with the longitudinal carrier via the cross member with respect to a vertical axis extending perpendicular to the longitudinal and transverse directions in different rotational positions. As a result, several provided on the blade holder bearing surfaces can be used, which in any installation position of the blade holder z. B. front top, front bottom (after tilting the blade holder about its longitudinal axis by 180 °), rear top (after turning the blade holder about its vertical axis by 180 °) or back down (turning and tilting the blade holder as described) are in the position where the blade is to hang up.

Further preferably, longitudinal and transverse beams lie in a plane parallel to the support surface. In addition, a support and / or stop module of the support or stop device can be mounted between the carriers and the base body. With such a construction, a central module can be relatively easily stored on the main body. Therefore, the structure is simplified.

A drag guided blade sharpener may include a blade holder as discussed above. This blade holder is releasably fixed to a base body. In addition, a relative to the blade holder via an abrasive holder movably held abrasive is provided on this body. More preferably, a guide device is adjustably held on the base body of the blade grinding device in such a way that it is adjustable relative to the support device in a height direction which is perpendicular to the longitudinal and transverse directions of the support means. By adjusting the height of the guide means at a location remote from the cutting nose of a blade resting on the support plane as discussed above, a grinding angle can be determined which is impressed on the cutting nose of the blade. As can easily be understood, the grinding angle at the cutting bevel is equal to the arc cosine of the distance of the cutting bevel from the center of the guide means parallel to the support plane divided by the adjusted height of the guide means (height of an extension line of the grinding surface of the blade resting on the grinding nose of a blade to be ground Abrasive at the point where it intersects the axis of the height adjustment, above the plane parallel to the support plane in which the blade is located). Again, it applies again that the term "height" means a vertical distance from the support level and is independent of location. About this height adjustment, the grinding angle can be set and documented on the blade to be ground. The guide means serves to guide the abrasive holder relative to the blade holder, in a preferred embodiment on the one hand linearly in an anterior-posterior direction between a height-adjustable rotation axis enabling tilting in the height direction and the cutting edge to be ground, and on the other hand pivoting around the axis of the height adjustment, in order to be able to cover the entire blade. Preferably, the support modules, the cross member, the stop modules and the guide means are also at least partially provided with a scale in order to document an orientation of the support device and the stops first and to be able to reproduce the same blade during later re-grinding.

An abrasive holder employable in the blade sharpener is preferably in the form of an open stirrup. On the open side of the bracket is an abrasive stop. The abrasive is biased against the abrasive stop towards the open side of the stirrup.

If the abrasive is so biased towards the open side of the bracket, the distance of the abrasive to the abrasive stop remains constant. The bias voltage may be suitably, e.g. done by a spring, a screw or the like. With such a structure of the abrasive holder, the abrasive is pressed against the blade-facing stops at every thickness of the abrasive, so that abrasive members of different thicknesses (e.g., diamond plate plates generally thicker than abrasive plate plates) will not cause angular changes. This leads to better reproducibility of the cut. This idea of the abrasive holder with automatic compensation of the thickness of the grinding element is also implemented separately from the blade grinding device with the blade support as described so far and may possibly be claimed as a separate invention.

Each of the stops may have one or two attachment points; Particularly preferably, the blade holder and thus the associated with this stop and support modules relative to the body rotatable or otherwise interchangeable, for example, on one side a one-point stop for larger blades, where stops are provided on several support modules, and on a second side a two-point stop (or a line stop) show, which can be used with a small blade, which rests only on a support module. The support modules can be interchangeable with the stop modules or separately.

By guiding in the previously set guide means, the abrasive holder can be reciprocated over the blade edge or bevel of the blade to be ground, maintaining a grinding angle based on the height and distance of the guide means to the blade edge. Preferably, the guide means is pivotally mounted on the height adjustment, so that a larger area of the blade can be ground with otherwise the same setting.

Preferably, the abrasive abutment - and moreover any component which can come into contact with the blade - in such a construction is made of a plastic material or at least coated with a material softer than the material of the probable blades to be treated. In general, it is desirable that even with an accidental incorrect use of the grinding device, the blades to be ground are not damaged. This is achieved by making the components that may come into contact with the blades from a material that is softer than the material of the blades and / or coated with such a material. For metallic blades, which can advantageously be ground on a blade grinding device according to the invention, plastic is a "soft" material in this sense. Therefore, a stopper made of plastic can not damage the blade to be ground, even if the abrasive in the abrasive guide has been accidentally pulled over the blade so far that the stopper hits the blade.

The abrasive holder specified in claim 22 and in particular 24 constitutes an independent invention, for which independently of a blade holder specified in claims 1 to 21 or a blade grinding device specified in claims 22 and 23, e.g. in a divisional application, protection can be claimed.

Furthermore, according to another aspect claimed in claims 25 to 27, the abrasive holder may be movably guided on the blade sharpening device by an elongate grinding bar over the support surface. The grinding rod may be functionally divided into a guide portion linearly guided on the blade grinding apparatus in a guide bearing and a connecting portion connected to the abrasive holder. An abrasive held on the abrasive holder has a flat abrasive surface. The abrasive surface is parallel or at a defined angle to the guide portion of the grinding rod. The grinding rod can be straight or bent bent long. The defined angle is between 3 ° and 4 °, preferably 3.5 °.

The grinding rod according to this aspect has a kink in the region of the screw thread, with which the grinding rod is screwed to the abrasive holder. Alternatively, the rectilinear grinding rod is inserted in a receptacle provided at an angle to the abrasive surface on the abrasive holder. If the abrasive is moved by means of this grinding rod, in addition to the V-cut (flat or Scandinavian [Scandi] cut) obtained with the conventional structure, a spherical cut can also be achieved. Such a cut is preferred for some outdoor knives. Preferably, the bending angle between 3 ° and 4 °, in particular about 3.5 °.

list of figures

• 1 eine Seitenansicht einer Klingenschleifvorrichtung auf einem Standfuß, in der ein erfindungsgemäßer Klingenhalter eingesetzt ist;
• 2 eine Draufsicht bzw. Ansicht der Klingenschleifvorrichtung von oben;
• 3 eine Ansicht der Schleifvorrichtung mit dem Klingenhalter von unten;
• 4 eine isometrische Ansicht der Klingenschleifvorrichtung ohne Standfuß;
• 5 eine isometrische Ansicht wie 4, wobei später erläuterte Funktionsgruppen „Führungseinrichtung“ und „Schleifmittelführung“ weggelassen wurden;
• 6 eine Explosionsansicht einiger Funktionsgruppen der 5;
• 7 eine Explosionsansicht des erfindungsgemäßen Klingenhalters;
• 8a und 8b eine Klingenschleifvorrichtung mit einer auf dem Klingenhalter aufgesetzten „großen“ Klinge jeweils von oben und unten gesehen;
• 9a und 9b eine Klingenschleifvorrichtung mit einer auf dem Klingenhalter aufgesetzten „schräg stehenden“ Klingenschneide, jeweils von oben und unten gesehen;
• 10a und 10b eine Klingenschleifvorrichtung mit einer auf dem Klingenhalter aufgesetzten „gebogenen“ Klingenschneide, jeweils von oben und unten gesehen und
• 11a und 11b eine Klingenschleifvorrichtung mit einer auf dem Klingenhalter aufgesetzten sehr kleinen Klinge, jeweils von oben und unten gesehen.

Hereinafter, an exemplary embodiment of the present invention will be explained with reference to the accompanying drawings. In the figures show:

• 1 a side view of a blade grinding on a pedestal, in which a blade holder according to the invention is used;
• 2 a top view and view of the blade grinding device from above;
• 3 a view of the grinding device with the blade holder from below;
• 4 an isometric view of the blade sharpener without stand;
• 5 an isometric view like 4 , wherein later-explained function groups "guide means" and "abrasive guide" have been omitted;
• 6 an exploded view of some functional groups of the 5 ;
• 7 an exploded view of the blade holder according to the invention;
• 8a and 8b a blade grinding device with a "big" blade placed on the blade holder seen from above and below, respectively;
• 9a and 9b a blade sharpening device with a "slanted" blade edge mounted on the blade holder, as viewed from above and below, respectively;
• 10a and 10b a blade sharpening device with a "curved" blade cutting edge mounted on the blade holder, seen from above and below, respectively
• 11a and 11b a blade grinding with a very small blade placed on the blade holder, seen from above and below.

DETAILED EXPLANATION OF THE EMBODIMENT

1 and 2 show a side view and top view of the blade grinding device according to the invention 1 , In doing so, the blade grinding device can be used 1 in the side view of 1 subdivided into the following functional elements: "blade holder", "height adjustment device", "abrasive holder guiding device", "abrasive holder", "base" and "base" (here designed as a handle). The blade holder according to the invention has for reasons of clarity in 1 no reference number; he is off 2 with the reference number 10 Provided.

definitions

For ease of description, in the present explanation of the invention, a "longitudinal axis", "transverse axis" and "height axis" and corresponding directions to the left, right, front, back, top and bottom are defined as follows with reference to the figures: The "longitudinal direction" the direction of the greatest extent in 2 and 3 , "Front" is the side on which the blade holder 10 and an abrasive-handling handle 95 lie in 1 and 2 the left side), "back" corresponding to the page on which the reference numeral 94 refers to the grinding rod (the grinding rod 94 goes, however, as from the 1 to 4 recognizable, from the "back" to the abrasive handle 95 after "forward" through). The "width direction" is offset by 90 ° to the longitudinal direction, ie in the 2 and 3 from top to bottom or in the main extension direction of a (later explained) cross member 60 , "Links" is therefore in the 2 below (and in 3 above), what a look at the blade sharpener 1 from behind or while holding it on the handle (the base) 200 considering finger and palm rest; "Right" is correspondingly the opposite direction. "Top" corresponds to 1 the top with the Schleifmittelhalterungsführeinrichtung 90 , the abrasive holder 100 and an abrasive biasing device 140 which will be explained later; "Below" can be found in 1 according to the stand 300 ,

General operation of the blade sharpening device

Like, for example 1 and 4 The blade grinding device can be seen 1 in use optionally on the handle 200 held or indicated here by dashed lines stand guide 220 (a hole) in the handle 200 on a stand 300 be placed on a flat surface, such as a table, this handle 200 serves as a base on which the later explained elements such as blade holder and height adjustment can be mounted. The base has for this purpose a receiving device (eg an upstanding rod) 301, which in the stand guide 220 under control 200 is insertable. If the recording device as shown here is a round rod 301 , the blade sharpener can 1 on the stand 300 around this rod 301 be rotatable; However, this is for the blade holder 10 relevant invention not relevant. Furthermore, on the bottom of the stand 300 several (for example, three) pads 302 provided to allow a wobble-free parking the blade sharpening device. These requirements 302 are preferably made of soft material such as rubber or similar plastics in order not to damage the (not shown) shelf and to ensure a non-slip state. The base has sufficient mass, in order to comply with the requirements 302 ensure that the blade sharpener does not slip during use; For example, it has a mass between one and five kilograms.

To prepare for the use of the blade sharpener 1 becomes an abrasive 131 on an abrasive carrier plate 130 in the (later explained in detail) abrasive holder 100 used. A blade to be ground, for example a knife blade, is placed on a blade support device 20 of the blade holder 10 placed and there against a blade backstop (in the following: stop 30 ) of the blade holder 10 positioned as will be explained in detail later. About the height adjustment device 80 becomes the height distance of a guide bearing against the blade holder 10 established. About the height distance, the grinding angle for the blade can be adjusted. By moving the sanding rod forward and backward 94 in the guide camp 93 the Schleifmittelhalterungsführeinrichtung 90 such that the abrasive 131 about in the 8a to 11b shown blade, the blade is ground on a first side. If the result on this first page is satisfactory, the blade is removed and then held upside down on the blade holder to grind the second side accordingly.

Subsequently, the relevant for the present invention functional elements of the blade grinding device 1 with reference to this principle use explained in more detail.

Basic structure of the blade holder according to the invention

The construction and use of the blade holder according to the invention 10 is determined by the 2 . 3 . 6 and 7 described. 6 shows the interaction of the blade holder 10 consisting of the cross member 60 , several support modules 21 to 27 (modules 23 and 24 are for clarity only in the 2 . 3 and 7 but not in 6 designated) and stop modules 31 to 36 , acting as a middle stop module, but not on the cross member 60 fixed compensator 37 with scales 40 . 41 for the stop and support modules, a (later explained later) side member 50 , the handle 200 , one through this continuous base fixing screw 210 , the side rail fixing screw 53 and an associated fixing nut 52 for the compensator 37 and the side member 50 , The support modules 21 to 27 Together form a "blade support device" or short "support device 20 ", The stop modules 31 to 37 are collectively called "blade back stopper" or short "stopper 30 " designated. In the 2 and 3 are also round magnets 38 can be seen at the ends of the support modules that hold laid-up blades during grinding, as will be explained in detail later.

7 shows the on the cross member 60 attached items of the blade holder according to the invention 10 in an exploded view. In detail, you can see from top to bottom of the cross member 60 , the adjacent stop modules 30 or. 31 to 36 , the support modules 21 to 26 the blade support device 20 and several fixing screws 51 for the support and stop modules. In the present embodiment, these parts of the blade holder are assembled by each of the stop modules 31 to 34 in projecting pins (not shown) on the in 7 concealed underside of the cross member 60 be fitted, the support modules 21 to 24 placed under the associated stop modules that respective screws 51 through the in the support modules 21 to 24 provided slots and in the stop modules 31 to 34 provided (round) through-holes in (not shown) screw holes (here blind holes) on the underside of the cross member 60 be screwed. Analog also the support modules 25 . 26 and stop modules 35 . 36 by screws 51 attached to the cross member, but also have the stop modules 35 . 36 like all support modules 21 to 26 Long holes through which the screws are screwed into the cross member. Due to the structure presented here are the stop modules 21 to 26 in the oblong holes opposite the cross member 60 adjustable in the longitudinal direction and can in the assembled state, like out 6 visible over the middle support module 27 be guided. Analog are the stop modules 35 and 36 in the slots provided there opposite the cross member 60 adjustable in the longitudinal direction. The stop modules 31 to 34 By contrast, according to this embodiment, are firmly connected to the cross member as soon as the associated fixing screws 51 are screwed in. This results in the embodiment in the assembled state on the cross member fixed stops in the modules 31 to 34 and against these adjustable stops on the modules 35 and 36 , All support modules 21 to 26 of the blade holder and as in 6 shown on the handle 200 guided support module 27 are displaceable in this embodiment.

Basically, of course, a structure is conceivable in which fixes all or individual support modules and all or individual stop modules are displaced; the present example merely shows one possible implementation of the inventive idea of the modular construction of the blade holder 10 , The attachment of the support and stop modules by means of screws is merely exemplary listed; instead of this attachment, for example, a clamping or quick-release construction or a magnetic or other Cohesive forces between cross member 60 , Support and stop module based construction can be used.

How out 6 and 7 can be seen, the cross member points 60 on both sides in the longitudinal direction of the blade grinding device Zapfeneinführlöcher 61 (hereafter: "holes 61"). In these holes 61 , which can optionally be (two-sided) blind holes or continuous, when assembling the blade grinding, especially when applying the blade holder 10 to the side member 50 , the pins provided on the side member 55 added to a positioning of the blade holder 10 on the side member 50 and above that on the blade sharpener 1 to simplify. Because these holes 61 , as in 6 and 7 shown on both sides of the cross member 60 are provided, the cross member during assembly of the blade holder can be rotated by 180 degrees about its vertical axis, which the assembly of the blade holder 10 especially, but the blade holder can be relieved 10 rotated about this vertical axis by 180 degrees on the blade sharpening device. As a result, in the embodiment according to "forward", ie away from the possible holding position of the blade to be placed, facing support modules (in 6 and 7 the modules 23 and 24 ) are brought "backwards" into a blade support position (discussed below) while the support modules 21 . 22 . 25 and 26 (and the associated stop modules) lie "forward" in a position where they do not pick up a blade. Likewise, the in 6 on the handle 200 lying middle support module 27 be removed and turned.

Place the cross member on the handle

To the in 6 pictured parts handle 200 , Side members 50 and blade holder 10 basically assemble, is first the side member 50 on the fixing screw 53 inserted and created with the fixing nut. Then the blade holder 10 pushed from the front onto the handle so that the pins 55 in associated holes 61 intervene in the cross member. This intervention is facilitated by the assembled blade holder 10 with the two inner support modules 25 and 26 (and analog between the stop modules 35 and 36 ) at the middle modules 27 and 37 is guided and thereby already to the handle 200 is aligned. At the same time, the side member becomes 50 held on the handle. As soon as the pins 55 of the longitudinal member 50 into the corresponding through holes 61 are fitted, the blade holder 10 by means of the fixing screw 210 passing through the handle 200 go, in the middle hole 62 in the cross member 60 When assembling above the in 6 visible upper end of the screw 210 lies, screwed and thus on the handle 200 be attached.

Placing a blade on the blade holder 10

In 2 and 3 is the blade sharpener 1 with the above with reference to 6 and 7 explains built-up blade holder 10 pictured from above and below. The modular blade holder 10 the in 2 and 3 embodiment shown comprises the seven support modules 21 to 27 the blade pad 20 and the seven stop modules 31 to 37 the blade back stopper 30 , In each support module, in the embodiment, the magnets are respectively on the front and rear sides 38 let in, keep the laid on the support modules metallic blades safely. How best of the 4 to 6 becomes clear, are in the present example in the exploded view of the 7 four of the support and four of the stop modules, namely the modules 21 . 22 . 25 and 26 such as 31 . 32 . 35 and 36 to the back of the handle (to be covered with the palm of the hand) 200 (and thus to the front of the device 1 ) and three each, namely the modules 23 . 24 . 27 . 33 . 34 and 37 , aligned to the front of the handle (with your fingers too wide). The central support module 27 with associated central stop module 37 is best in the exploded view of the 6 to recognize.

These central modules 27 . 37 as well as in 6 Recognizable, one slot each, through the (in the assembled state) a Basisfixierschraube 210 to the above-described cross member 60 on the acting as a base handle 200 to fix, and a Längsträgerfixierschraube 53 protrude. The fixing screws 210 and 53 lead and fix the central support module 27 and the central stop module 37 , hereinafter referred to as "Compensator 37 Is called, such that both in the longitudinal direction to the handle 200 and the side member 50 are displaceable as long as the screws 210 . 53 not tightened, so in a similar way as the screws 51 for the support modules 21 to 26 , This in 6 shown module 27 and the compensator 37 Both can be separated from each other by the handle 200 removed and, for example, rotated by 180 ° again be placed. The compensator 37 can optionally as in 6 shown are placed on the handle so that a Kompensatorspitze 39 pointing back to the blade holder, or such that a concave rounded stop of the compensator 37 , the top 39 opposite, pointing to the rear. Analogously, the central support module 27 be placed so that its narrower end (as in 6 shown) or its wider end lies behind.

Placing a "big" blade (Fig. 8)

Subsequently, the fixation of a relatively large blade with a straight edge on the blade holder 10 with reference to the 8a and 8b explained.

An example of such a "large" blade would be a standard Chinese cooking or vegetable knife or a cleaver with a blade length of eg 25 cm and a blade height of eg 10 cm as in 8th on the blade holder 10 shown. 8a shows a view from the top of the blade holder while 8b analog shows a view from below. The same applies to the following 9 to 11 , To such a blade on the blade holder according to the invention 10 can hold the outermost support modules 21 and 22 (see eg the 2 . 3 and 8b) in the associated slots opposite the cross member 60 be pushed back as far as possible. The associated stop modules 31 and 32 are fixed in this embodiment on the support modules. The central support module 27 is then pushed forward to the stop. As in 8b It is important to note that the magnet-supported points on the modules 21 . 22 and 27 Do not lie in a line, but form a triangle or trapezium with as large a base as possible to support the big blade as well as possible. Subsequently, the position of the knife in the embodiment on the attacks 31 and 32 reproducibly determined and documented the position of the modules (at the first application) for the next grinding process. The next grinding operation of the same knife can be done so that stop and support modules are set as documented, which accelerates the support process and leads to a reproducible grinding result.

Insert compensator for asymmetrical blades (Fig. 9)

Points the blade one between its tip and handle sides (the left and right sides of the blade sharpener 1 Strongly asymmetrical shape, the tip can 39 of the compensator 37 be used as described below with reference to 9 is explained. 9a and 9b show each of the top and bottom of a triangular tapered blade 402 For example, a blade of a vegetable knife. How out 9 recognizable, this blade becomes 402 so hung up on the middle module 27 and a further outermost module (here the module 24 ) rests and the blade cutting edge 403 (approximately) runs parallel to the cross member. How out 9a To recognize, the back of the blade pushes 402 at the upper (right) corner of the stop module 34 on. About the compensator tip 39 (and a corner of a stopper module) will align the blade edge 403 set approximately parallel to the cross member and can be scaled accordingly 40 of the compensator 37 be documented.

Placing a rounded blade (Fig. 10)

A similar procedure as described here for large or asymmetrical blades with the blade holder according to the invention 10 Also possible for otherwise unusually shaped blades that can not be easily placed or clamped on conventional sharpening devices. 10a and 10b show an example of a medium-sized blade 402 with round blade cutting edge 403 from above and below. For this purpose, then the more internal support modules 25 and 26 and according to the associated stop modules 35 and 36 of the blade holder 10 be used. As will be described in more detail below for a very small blade, the outer support module 22 Magnetically holding the blade or knife 400 on the support modules by applying to the blade booklet 401 (which is referred to as "Erl" in knives and the extension of the blade as a flat or round iron, which is in the knife handle infected) support. The magnets 38 an outer support module (in the figure of the module 22 ) can hold the blade while doing so 402 Support by being on the side of the blade handle 401 lie where the blade handle in the handle 401 still within the sphere of influence of the magnets 38 the outer module is located. The stop modules 35 and 36 make out like 10a recognizable a reproducible two-point stop.

Small blade (Fig. 11)

Will against it as in 11a and 11b (again from top and bottom, for example) as desired, a comparatively small blade 400 Sharpen through the central support module 27 can be held alone and does not extend to other modules, such as a second blade of a pocket knife or the blade of a so-called "Neck Knife", is the central module 27 (with screws loosened 53 and 210 ), for example, pushed forward relative to the modules further out. Then the blade holder 10 by inserting its two inner modules 25 . 26 along the central module 27 on the side member 50 pushed until the on the side member 50 to recognize pin 55 in corresponding holes 61 in the cross member 60 fitted and thus longitudinal beams 50 and crossbeams 60 are plugged together. Next is the side member 50 on the side rail fixing screw 53 with the fixing nut 52 attached, and the bottom of the handle 200 outstanding fixing screw 210 in the hole 62 of the crossbeam 60 screwed into the thread 62 on the cross member 60 sticks out, but both screws are not tightened yet.

Thus, the central support module protrudes 27 further than all other support modules to the rear, and the small blade to be ground 400 is placed on it.

To the small blade on the central support module 27 reproducibly hang up, is also the compensator 37 , here in 11a with its concave side, pushed against the blade. On one of the two in 6 shown scales 40 . 41 the value is read at which the compensator 37 with the concave side and thus with two points against the blade 401 pushes, and this value documents. As already explained, the small blade 401 thus by the holding force of the magnets 38 in the support module 27 held on the support plane and fixed reproducibly by the two corner points of the concave side of the compensator. As described above with reference to 10 described support the magnets 38 an outer support module (in the figure of the module 22 ) while holding the blade 402 by placing it sideways on the blade handle 401 lie around, so that the blade handle in the handle 401 in the sphere of action of the magnets 38 the outer module is located.

Due to the modular construction of the blade holder according to the invention 10 Thus, virtually all commercially available blades can be reproduced on the blade holder 10 be placed and fastened.

If the blade is placed so reproducible, the above-mentioned fixing screws 53 and 210 attracted and thus the blade holder 10 Fixed with the blade reproducible. This setting may also be based on the scales 40 . 41 be documented.

Subsequently, with the establishment of an abrasive in the abrasive guide, the adjustment of the height adjustment 80 and continuing the grinding.

Abrasives Selection

Before or after the above-described attachment of a blade to be processed 400 on the blade holder assembled as explained above 10 must be an abrasive 131 selected and on the abrasive holder 100 be attached. The abrasive 131 is usually in advance on a support plate 130 attached, for example, glued or stretched thereon, or is itself already plate-shaped, for example, a grinding or whetstone. As abrasives come depending on the blade material, desired removal and fineness of the cut various known abrasives in question, such as diamond grindstones, oil or water abrasive stones or abrasive papers of different grain on carriers. Since the choice of abrasive is essentially known and not the subject of the present invention, it will not be discussed further here.

Inserting the abrasive in an abrasive holder according to the invention

The carrier plate 130 with the abrasive 131 gets into the abrasive holder 100 inserted, which represents a further development, which is also claimed separately from the blade sharpening device and the above-described blade holder. In this case, in the present embodiment, as in FIG 1 can be seen, via a centering stop 120 the abrasive carrier plate 130 laterally (in the 1 and 2 on the left side) and according to the invention via an abrasive biasing device (hereinafter briefly biasing device) 140, for example, a tension spring, a clamping screw or a combination of both, against front and rear stops 110 . 111 of the abrasive holder 100 pressed.

To make this idea easy to implement, has the abrasive holder 100 as best in 1 recognizable in the side view the shape of an open stirrup. The front and rear stops 110 . 111 of the abrasive holder 100 lie on the open side of this temple. The abrasive 131 on the abrasive carrier plate 130 is through the biasing device 140 in the constellation shown against these attacks 110 . 111 pressed and lies on one side of the centering stop 120 the abrasive carrier plate 130 on. Due to the friction between the abrasive produced by the biasing force of the biasing device 131 and the attacks 110 . 111 holds the abrasive securely in the abrasive holder 100 , In addition, the distance between the abrasive and the blade in the grinding operation (described later) remains identical because the underside of the abrasive 131 always at the same height as the blade, regardless of the thickness of the abrasive and the abrasive backing plate. In the present embodiment, the abrasive holder 100 compensate for a difference in thickness between different abrasive elements without further action. Therefore, a grinding angle (described later) becomes during use of the blade sharpening device 1 kept constant.

Height adjustment

As soon as the two above-mentioned steps "Laying the blade 400 "And" insertion of the abrasive 131 "are done, so the blade to be ground on the blade holder according to the invention 10 reproducibly rests and the required abrasive 130 . 131 is used in the next step on the (known per se) height adjustment 80 set a required grinding angle, as already explained in general and now based on 1 will be shown. The height adjustment device 80 is at the front end of the longitudinal member 50 provided and includes a height adjustment element 81 , In the present embodiment, a round rod 81 , a Höhenverstellfixiereinrichtung 82 , here a jack 82 in which the round bar 81 is guided, and a height fixing 83 , here a clamping screw 83 on the round rod 81 in the socket 82 suppressed. By moving the round rod 81 in the bush (in the height direction) becomes the abrasive holder guiding device 90 opposite the blade holder 10 and the blade laid thereon as described above 400 shifted in height so that an angle of a guide element 94 (and thus the abrasive 131 ) to the support plane or the blade changes when the abrasive 131 rests on the blade. Then the round rod 81 through the clamping screw 83 clamped. The thus determined grinding angle at the cutting nose of the blade 400 can use an in 4 recognizable scaling 84 of the round rod 81 be documented.

grinding

After the above steps laying the blade, selecting the abrasive and adjusting the grinding angle, the actual grinding process can begin. For this purpose, the blade grinding device 1 as in 1 shown placed on the stand or as based on 4 or 6 conceivable with one hand on the handle 200 held. Preferably, with the thumb and forefinger of the other hand becomes the Schleifmittelbewegungsgriff 95 includes and the abrasive on the grinding rod (here a rod) 94 in the guide element (in a socket) 93 over the cutting bevel to be ground (in 1 not shown) on the blade holder 10 drawn up blade. The guide camp 93 this is via a guide bearing (tilting bearing) 92 on top of the height adjustment device 80 tiltable up and down. In addition, the guide bearing on the round rod 81 around an axial direction of the round rod 81 rotatable so that the abrasive holder 100 due to the three degrees of freedom (one each in the linear guide 93 and the two mutually perpendicular radial guides in the guide bearings 92 and 93 ) can cover a surface in which the abrasive nose of the blade to be ground is located.

The grinding rod 94 is in the present embodiment at her to the abrasive holder 100 side facing part (hereinafter: the connecting portion) 94b with the abrasive holder 100 via a centering element 96 the grinding rod and an associated receptacle 115 in the abrasive holder 100 connected. This recording 115 For example, may be a threaded insert into which the grinding rod 94 can be screwed. In this example, an abrasive plane passes through this movement of the abrasive holder 100 and the over the abrasive carrier plate 130 associated abrasive 131 over the blade cutting edge to be ground 403 is moved, parallel to the longitudinal direction of the grinding rod 94 , This will also change the blade edge 403 sanded in a straight line motion with a so-called V or flat grinding.

By repeatedly pulling the abrasive 131 over the blade edge 403 this is sharpened. The movement is performed after setting the grinding angle by means of the abrasive guide. Depending on the abrasive and blade nor the use of liquids such as water or grinding oil may be appropriate; since the present invention does not differ from the prior art in this respect, this point will not be detailed here.

Although not shown here, the abrasive holder 100 at the grinding bar 94 also with a bending angle relative to the direction of movement of the grinding rod 94 in the guide element 93 be arranged, for example by the threaded insert with a slight angle of eg 3 to 4 ° relative to the axis of the grinding rod 94 towards the blade support surface (a surface of the blade holder 100 ) is fitted tilted. Will in such an arrangement the abrasive 131 Pulled over the cutting bevel, the abrasive performs a curved movement over the blade edge, resulting in a convex or crowned cut. This cut is preferred for knives with high robustness, eg some outdoor knives. Alternatively, the grinding rod could also 94 in the connecting section 94b have a kink just before the centering element, which would lead to analogous results.

Once the result of the grinding process, possibly even after one or more changes of the abrasive to finer grits, is considered satisfactory for the first side, which can be determined by a Schleifgratbildung on the opposite side of the blade, the blade is removed and rotated so that the second side of the blade 400 is up. As a rule, then points to the blade 400 appropriate blade booklet or a blade handle 401 which, for example, pointed to the left during the first grinding operation, to the right during the second grinding operation. As the blade grinding device 1 in its longitudinal direction is symmetrical, a re-adjustment of the blade support 10 be unnecessary for most (also largely symmetrical) blades; at an in 9 shown blade ranges a setting of the support module 23 (and the stop module 33 ) mirror-symmetric to the originally used modules 24 and 34 out. Subsequently, will the sharpening process is repeated by pulling the abrasive over the cutting bevel on the now upper second side of the blade.

In summary, the invention relates to a blade holder 10 for a blade sharpener 1 Thanks to its modular construction, it has blades 400 different size and shape can keep reproducible. In addition, a novel abrasive holder 100 for the blade sharpener 1 explains the different thicknesses of the abrasive 131 compensates, and thus ensures an improved reproducibility of the grinding process.

LIST OF REFERENCE NUMBERS

1

(abrasive-guided) blade grinding device ( 1 )

10

Blade holding device ( 2 )

20

Sound support device

21-27

Support modules (the blade support device)

30

Blade back stop device

31-37

Modules of the anchor device ( 37 also: compensator)

38

Blade holding magnet / e; Blade holder

39

Kompensatorspitze

40

Scaling of the compensator

41

Scaling of the anchor device ( 4 )

50

Rail element

51

Fixing screw (s) for support and stop modules ( 3 )

52

Fixing nut for compensator and side member

53

Längsträgerfixierschraube

55

Pin on the side member

60

crossbeam

61

Holes in the cross member (for tenons 55 )

62

Thread in the cross member (for fixing screw 210 )

80

Abrasive angle or height adjustment device ( 1 )

81

Height adjustment element (adjustment rod)

82

Höhenverstellfixiereinrichtung

83

Höhenfixiermittel

84

Scaling of the height adjustment element

90

Abrasives holder transfer device

91

Tilting joint (between Schleifmittelhalterungsführeinrichtung and height adjustment)

92

guide bearing

93

guide element

94

grinding rod

94a

Guide section (the grinding rod)

94b

Connecting section (the grinding bar)

95

Abrasives movement handle

96

Centering element of the grinding rod

100

Abrasive holder (abrasive holder)

110, 111

Front / rear stop of the abrasive holder (towards the knife)

115

Pick up the abrasive holder

120

Centering stop of the abrasive carrier plate

130

Abrasive-supporting plate

131

abrasive

140

Abrasive pretensioner (tension spring)

200

grip

210

Base fixing screw (basic fixing)

220

Stand guide (in the handle)

300

stand

301

Receiving device for stand guide

302

Support base

400

Blade (knife)

401

Blade handle (knife handle)

402

Blade (blade mirror)

403

Blade cutting edge

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202011107695 U1 [0004, 0011]

Claims (27)

A blade holder (10) for holding a blade, comprising: support means (20) forming a longitudinally and transversely extending support surface for laying the blade blade of a blade, and stop means (30) for applying the blade back one on the support surface lying blade in the longitudinal direction of the support surface, wherein the support means (20) and the stop means (30) for changing the size of the support surface in the longitudinal direction are mutually adjustable, characterized in that the support means (20) and / or the stop means (30) modular are constructed in the way / is that the support surface is variable in size and / or contour. Blade holder (10) according to claim 1, characterized in that the blade support means (20) at least two support modules (21 to 27) which are juxtaposed in the transverse direction and in the longitudinal direction against each other adjustable, in particular displaceable, are. Blade holder (10) after Claim 2 , characterized in that at least one of the support modules (31 to 37) in the longitudinal direction relative to the stop device (20) is unadjustable. Blade holder (10 after Claim 2 or 3 , characterized in that the support means (20) has an odd number of support modules (21 to 27). Blade holder (10) after Claim 4 , characterized in that the support modules (25 to 27) are distributed in the transverse direction so that on both sides of a lying in the middle of the support surface central support module (27) the same number of lateral support modules (21 to 26). Blade holder (10) after one of Claims 2 to 5 , characterized in that the support modules (21 to 27) are each plate-shaped and / or flush next to each other. Blade holder (10) according to any one of the preceding claims, characterized in that the stop means (30) at least two stop modules (31 to 37) which are arranged side by side in the transverse direction and in the longitudinal direction against each other adjustable, in particular displaceable, are. Blade holder (10) after Claim 7 , characterized in that at least one of the stop modules in the longitudinal direction relative to the blade support means (20) is unadjustable. Blade holder (10) after Claim 7 or 8th , characterized in that the blade back stop means (20) comprises an odd number of stop modules. Blade holder (10) after Claim 9 , characterized in that the stop modules (35 to 37) are distributed in the transverse direction so that both sides of a lying in the middle of the support surface central stop module (37) are equal to many lateral stop modules (31 to 36). Blade holder (10) after Claim 10 , characterized in that the centrally located stop module (37) provides a 2-point stop. Blade holder (10) after one of Claims 2 to 11 , characterized in that the stop modules () are each plate-shaped and / or flush with each other. Blade holder (10) after one of Claims 1 to 12 , characterized in that the support means (20) comprises at least two modules (21 to 27) juxtaposed in the transverse direction and adjustable in the longitudinal direction, in particular displaceable, and the stop means (30) comprise at least two modules (31 to 37) juxtaposed in the transverse direction and adjustable in the longitudinal direction, in particular displaceable, wherein each support module (21 to 27) exactly one stop module (31 to 37) is associated. Blade holder (10) after Claim 13 , characterized in that each pair of pairing the stop module and support module are arranged on each other. Blade holder (10) according to any one of the preceding claims, characterized in that the support means (20) has at least two modules (21 to 27) adjacent to each other in the transverse direction and in the longitudinal direction against each other adjustable, in particular displaceable, and / or the abutment means (30) comprises at least two modules (31 to 37) juxtaposed in the transverse direction and adjustable, in particular displaceable, in the longitudinal direction, and the support modules (21 to 27) of the support means (20) and / or the Stop modules (31 to 37) of the stop device (30) on a cross member (60) are mounted adjustable and / or replaceable. Blade holder (10) after Claim 15 characterized by a longitudinal member (50) projecting from the cross member (60), preferably in the transverse direction in the center of the bearing surface. Blade holder (10) after Claim 16 , characterized in that the longitudinal carrier (50) and the cross member (60) are releasably fixed to a base body (200). Blade holder (10) after Claim 16 or 17 , characterized in that the cross member (60) is releasably engaged with the side rail (50). Blade holder (10) after one of Claims 16 to 18 , characterized in that the blade holder (10) via the cross member (60) is engageable with the side member (50) in different rotational positions with respect to a height axis extending perpendicular to the longitudinal and transverse direction. Blade holder (10) after one of Claims 16 to 19 , characterized in that the longitudinal member (50) and the cross member (60) lie in a plane parallel to the support surface, and between the longitudinal member (50) and the cross member (60) on the one hand and the main body (200) on the other hand, a support module (27). the support device (20) and / or a stop module (37) of the stop device (30) are / is mounted. Blade holder (10) after Claim 20 , characterized in that the support means (20) and the stop means (30) each have seven modules (21 to 27, 31 to 37), wherein in each case a transversely central module (27, 37) between the longitudinal carrier (50) and the cross member (60) on the one hand and the base body (200) on the other hand is arranged, and in the transverse direction on both sides of the respective central module (27, 37) three further modules (21 to 26, 31 to 36). A blade grinding apparatus (1) for grinding a blade characterized by : a blade holder (10) according to any one of Claims 1 to 21 , and an over the support surface () movably guided abrasive holder (100). Blade grinding device (1) after Claim 22 , characterized in that the abrasive holder (100) relative to the blade holder (10) is height adjustable. Blade grinding device (1) after Claim 22 or 23 characterized in that the abrasive holder (100) is in the form of an open stirrup, an abrasive stop (110, 111) is provided on the open side of the abrasive holder (100), and an abrasive (130) faces the abrasive stop (110, 110) toward the open side; 111) is biased. Blade grinding device (1) according to one of Claims 22 to 24 characterized in that the abrasive holder (100) is movably guided on the blade sharpening device (1) by an elongated grinding rod (94) over the support surface, the grinding rod (94) being functionally guided in a guide portion (94a) linearly guided on the blade sharpening device (1). and a connecting portion (94b) connected to the abrasive holder (100), an abrasive member (131) held on the abrasive holder (100) has a flat abrasive surface, and the abrasive surface parallel or at a defined angle to the guide portion (94a) of the grinding rod (94) ) lies. Blade grinding device after Claim 25 , characterized in that the grinding rod (94) is elongated straight or bent. Blade grinding device after Claim 25 or 26 , characterized in that the defined angle between 3 ° and 4 °, preferably 3.5 °.

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