ES2924097T3 - Improved abrasion wheel - Google Patents

Abstract

The present invention describes an abrasive wheel comprising a circular core having an outer periphery, an edge disposed orthogonally to said circular core at said outer periphery, said edge comprising an inner surface and an outer surface, and a granular material disposed on at least part of said outer surface. Furthermore, a plurality of openings are provided in the core to provide an air flow directed towards the inner surface, and where the outer surface of the rim is provided with a plurality of grooves, and where a main part of the granular material is provided on said surface. outer surface of said rim in the spaces between said grooves. In this way, the abrasive wheel is cooled during operation, the heat is dissipated more easily and the accumulation of particles of the product being crushed is minimized. Due to the plurality of openings in the circular core, air is forced into the inner surface of the rim, thus providing air cooling. Due to the presence of grooves on the outer surface, the surface area of said outer surface inevitably increases, thus increasing heat dissipation and providing additional cooling to the abrasive wheel. By arranging a major part of the granular material in the spaces between the slots, said slots are kept free of granular material thus minimizing the risk of accumulation of material or particles in said slots. The combination of cooling the abrasive wheel and reducing the risk of particle build-up further increases the life of the abrasive wheel. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Improved abrasion wheel

field of invention

The present invention relates to abrasion wheels. More specifically, the present invention relates to abrasion wheels for grinding a product or finishing a surface of a rubber product to form a desired surface smoothness.

Background of the invention

Abrasion wheels are generally characterized by their ability to grind products or to separate products. For example, such products may be rubber tires or the like, where there is a desire to renew or recycle material. One use situation typically involves rotating the grinding wheel at high speed and applying the product to be ground onto gravel disposed on an outer surface of the grinding wheel. In this way, the part of the product in contact with the abrasion wheel is disintegrated, and either the abrasion wheel can be used to smooth the surface of the remaining part of the product, or the abrasion wheel can be used to disintegrate the entire product. . However, during such use, various problems are known to occur. Particles of the product being ground can quickly accumulate in the grit, thereby rendering the grinding wheel useless. In other words, the abrading surface will become smooth over time due to the accumulation of particles in the grit. In addition, the grit, and the surface on which the grit is placed, can become hot due to friction between the grinding wheel and the product being ground. For example, products being ground may behave differently at elevated temperatures or the grinding wheel may reach temperatures beyond what is considered safe.

US-2002/035890A1 forms the basis of the preamble of claim 1. It discloses a metal-bonded drilling tool that is improved in grinding performance, has a long service life and can drill a hole in dry conditions. no need for water. The metal bonded drilling tool includes a cylindrical body formed with a plurality of axially extending grooves, the body having an open front end portion, a shank integral with the cylindrical body having a threaded hole for use in mounting of the tool in a rotary tool, and numerous abrasive grains bonded to a front edge of the cylindrical body and to the inner and outer cylindrical surfaces of the front end portion of the cylindrical body, by means of a bonding member formed mainly of a copper alloy.

General description

The object of the invention is to solve some of the problems mentioned above. It is achieved by an abrasion wheel according to claim 1. The dependent claims define further embodiments.

By a circular core is meant a unitary, solid, continuous metal core. Preferably, the circular core is made of steel. Preferably, the core has a thickness that ensures stability when the abrasive wheel is rotated at operating speeds. The thickness must correspond to the diameter and use of the tool, but can be from 2 to 6 mm. The diameter of the circular core can be between 50 mm and 300 mm, depending on the use. An outer periphery is inevitably a part of a circular core as defined. By flange is meant a metal in the form of a ribbon comprising a width greater than the thickness of the circular core and a length equal to the circumference of the outer periphery of said circular core. The width of the rim defines the operating width of the grinding wheel. The width of the rim may vary according to use, but may be at least 20mm or may be at least 200mm. However, it should be noted that the width and indeed the entire abrasion wheel can be scaled according to the desired use. The flange is mounted along one edge at the outer periphery. Therefore, the rim is a circular element mounted on said outer periphery. By grit material is meant a material which preferably has a hardness substantially greater than the product which the abrasive wheel is intended to grind. The gravel material constitutes the gravel. The grit material may be tungsten carbide. The grit material may be formed as small grains comprising a plurality of sharp points, or it may be other structures comprising sharp edges which can grind products. This keeps the grinding wheel cool during operation, dissipating heat more easily and minimizing the build-up of particles from the product being ground. Due to the plurality of openings in the circular core, air is forced onto the inner surface of the rim, thus providing air cooling. Due to the presence of grooves on the outer surface, the surface area of said outer surface inevitably increases, thus increasing heat dissipation and providing additional cooling to the grinding wheel. By arranging a major part of the gravel material over spaces between the grooves, said grooves are kept free of gravel material, thus minimizing the risk of accumulation of material or particles in said grooves. The combination of cooling the grinding wheel and reducing the risk of particle build-up further increases the life of the grinding wheel.

In one embodiment, the circular core may comprise a central shaft and a central opening, for mounting the grinding wheel to a rotating tool.

By central axis is meant an axis arranged orthogonally to the plane, where the outer periphery is found, and where said axis is arranged in the center of the circular core. In this way, the central axis is positioned equidistant from the outer periphery of the circular core. By central opening is meant a through opening arranged in the center of the circular core. Preferably, the central opening is arranged in an offset depression, said depression being a part integral with the circular core. Preferably, the depression is offset so that the central opening is positioned in a position that provides the greatest amount of stability to the grinding wheel when the grinding wheel is rotating at operating speeds. Said position may be in a central position of the abrasion wheel when the abrasion wheel is considered as a whole, that is to say, centrally with respect to the circular hub and at half the width of the rim.

In this way, the abrasion wheel can be mounted on a rotating tool and rotated about the central axis. The central opening may have a shape corresponding to a shape of the rotation tool, so that the rotation is safe and efficient. Preferably, the central opening comprises at least one indentation for engaging a corresponding protrusion on the turning tool so that the grinding wheel is securely attached.

In one embodiment, the cross section of the grooves may be V-shaped.

In this way, the grooves extend towards the outer surface of the rim. By having the cross section of the grooves V-shaped, particles are less likely to accumulate in the grooves, as the surface area in the immediate vicinity of the apex of the groove is minimized compared to other shapes, such as V-shaped grooves. OR.

According to the invention, the plurality of grooves are arranged to form a helix having an axis collinear and coincident with the central axis.

In one embodiment, the plurality of grooves may be sloped with respect to an edge of the rim.

As the helix axis is collinear and coincides with the central axis, these axes are indistinguishable. In this way, the grooves are oblique to a normal cutting angle between the product to be ground and the outer surface of the rim. A normal cutting angle can be defined as the cutting angle, where the product to be ground is applied orthogonally to the outer surface of the flange. That means a normal incidence of the product to be ground on the outer surface of the flange. An oblique cut angle is effectively realized when the grooves, and the adjoining gaps between the grooves, are arranged in a helical pattern along the circumference of the rim. Alternatively, the grooves may be inclined with respect to an edge of the rim, said edge being colinear with the outer periphery of the central core. Therefore, when said product is applied orthogonally to the outer surface of the rim, a greater amount of gravel material disposed on the spaces between the grooves impacts on the product to be ground. In other words, the plurality of grooves arranged in a helix provide clearance for most of the grit, that is, most of the grit is arranged aggressively with respect to the product to be ground, so that it is increases the efficiency of the grinding procedure. By being aggressively arranged, it is meant that grain shading of the grit material from subsequent grains when the abrasive wheel is rotating is minimized. In other words, increased clearance is provided for the grit material to contact the product to be ground. In addition, the arrangement of the grooves along the direction of rotation provides an improved free flow of particles, so that the accumulation in the grit of said particles originating from the product being ground is minimised. Said free flow of particles causes said particles to be guided away from the abrasion wheel along the grooves. In other words, the particles formed from the grinding process are guided in a given path by the groove arrangement, and when said groove arrangement is in a helix, the path leads the particles away from the grinding wheel. In this way, the abrasion wheel has an inherent self-cleaning effect. Combined with the aggressively disposed gravel due to the helix or sloped disposition, the abrasion wheel experiences an increase in wear life.

In a non-inventive alternative, the plurality of grooves may be arranged parallel to each other and parallel to the outer periphery of the circular core.

Being arranged parallel to each other and parallel to the outer periphery of the circular core, the grooves are arranged orthogonal to the central axis of the grinding wheel, ie the central axis of rotation. In such an arrangement, it can be said that the grains of the grit material disposed over spaces between the grooves, shadow the subsequent grains of the same grit material, that is, the grinding efficiency of the grinding wheel is reduced, which may be desired. in a certain use.

In this way, the resistance between the gravel and the product to be ground is reduced. That means that because the grooves and spaces attached with gravel material are aligned with respect to the normal cutting angle, less gravel material is exposed to the product being ground at any given time. Therefore, resistance is reduced, which can be useful for certain products or situations.

In one embodiment, the rim may be a tape mounted on the outer periphery of the circular core along one edge of said tape.

By a ribbon is meant a primarily rectangular piece of material folded to fit the outer periphery of the circular core. Thus, the tape comprises two side edges and two end edges, said end edges being joined to form a circular tape. One of said lateral edges is mounted on the outer periphery of the circular core, so that the grinding wheel resembles a bowl.

In this way, the thickness of the circular core can be smaller than the width of the rim, so that the inner surface of the rim is exposed to air. It is noted that the assembly may be by welding, or the assembly may be by means of pressing, stamping or casting the abrasion wheel in one piece.

In one embodiment, a tab may be attached to each opening of the circular core, a plurality of tabs being provided on said circular core.

In one embodiment, the tabs may be formed from excess material folded from the opening, the tabs thereby being an integral part of the circular core.

In one embodiment, the tabs are oriented such that air is forced over the inner surface of the rim, thereby providing air cooling to the abrasion wheel.

By tongue is meant a partially free piece of material, freed from the circular core. Thus, a tongue and an opening can be formed simultaneously by making appropriate cuts in the circular core, followed by folding an uncut edge, from the plane of the circular core. In this way, the tongue is attached to the circular core through the arch and, therefore, can be considered a solid part of the circular core. Therefore, the openings can be said to comprise integrated tabs. The tabs can be said to be cooling tabs. The tabs can be considered to be wings. Preferably, the plurality of tabs fold into an interior volume partially defined by the interior surface of the rim and the circular core. Preferably, the tabs are arranged in a consistent pattern, such that the tabs are identically positioned relative to the opening, for all openings provided in the circular core. Preferably, the openings are nearly quadratic and the raw edge is oriented orthogonally to the outer periphery of the circular hub.

In this way, a passive means is realized for guiding a flow of air over the inner surface of the rim. By passive means it is meant that said air flow is introduced into the abrasion wheel and guided over the inner surface of the rim, by the combination of high speed rotation of the abrasion wheel and the orientation of the tabs. Said orientation of the tabs is chosen to maximize airflow over the inner surface of the rim during high speed rotation of the abrasive wheel. Thus, the passive means for guiding a flow of air over the inner surface of the rim provides passive cooling means for the grinding wheel. In this way, said passive cooling means cause a lower operating temperature of the grinding wheel.

In one embodiment, the gravel material may form an overhang above said grooves.

By a protrusion is meant that clearance is provided between the outer surface of the rim and portions of the gravel material disposed primarily in the spaces between the grooves.

In this way, the combined surface area of gravel material exposed to the environment is increased compared to a situation where no overhang is provided. Therefore, when the grinding wheel is used to grind a product, a larger portion of the product can be in contact with the grit, thus increasing the efficiency of the grinding wheel. In addition, the amount of gravel can be increased, allowing an overhang, while maintaining the presence of gravel-free ruts, to prevent particulate build-up, as described above. Additionally, an increased surface area of grit material results in a greater amount of heat dissipation, thus increasing the cooling capabilities of the abrasion wheel.

In one embodiment, the grit material may be tungsten carbide.

Thus, the gravel material has a higher hardness than most materials expected to be ground. Materials possessing similar hardness, such as silicon carbide, are envisioned within the scope of the invention.

In one embodiment, the grit size can be between 14 and 220.

The grit size described is standardized according to the European Federation of Abrasive Products (FEPA). A grit size of 14 corresponds to a particle size (mean diameter) of 1.47 mm, and a grit size of 220 corresponds to a particle size (mean diameter) of 0.058 mm.

In this way, the grit can be varied according to use and the desired smoothness of the ground product.

In one embodiment, the abrasion wheel may be mounted on a rotating tool, said rotating tool providing rotation about a central axis of the abrading wheel.

Preferably, the mounting is done by engaging a rotating part of the rotating tool, in the central opening and the indentation, where said central opening and indentation correspond to the dimension of the rotating tool and to a protrusion in said rotating part, respectively. In this way, the grinding wheel can be set in efficient and safe rotation.

Brief list of drawings

Examples of embodiments according to the invention are described below, where

Figure 1 illustrates a perspective view of an abrasion wheel according to the invention.

Figure 2 illustrates a second perspective view of an abrasion wheel according to the invention.

Figure 3 illustrates a top view of an abrasion wheel according to the invention.

Figure 4 illustrates a plurality of cross-sectional views of an abrasion wheel according to the invention.

Figure 5 illustrates an example of an outer surface of an abrasion wheel according to the invention.

Figure 6 illustrates a second example of an outer surface of an abrasion wheel according to the invention.

Figure 7 illustrates a close-up cross-sectional view of a groove in an outer surface in an abrasion wheel according to the invention.

Detailed description of the drawings

In the following, the invention is described in detail by means of embodiments thereof, which should not be considered as limiting the scope of the invention.

Figure 1 is a perspective view of a portion of an abrasion wheel 100 according to the invention. Abrasion wheel 100 comprises a circular core 101 having an outer periphery 103 and a central opening 105 . Said central opening 105 is arranged in a depression 109. Said depression 109 protrudes into an inner volume (not shown), partially defined by said circular core 101 and a rim 111 arranged orthogonally to said core 101 at said outer periphery 103 . Therefore, the grinding wheel 100 can be said to be bowl-shaped with a central depression 109 . Preferably, the depression 109 is an integral part of the core 101, which is therefore considered to be part of the core 101 in this context. Preferably, central opening 105 comprises at least one indentation 107 for securely mounting abrasion wheel 100 on a rotary tool (not shown). Indentation 107 may be formed to correspond to a protrusion on said rotating tool (not shown). Said rotation tool can be used to rotate the abrasion wheel 100 about a central axis L, engaging with the central opening 105 and the at least one groove 107. The rim 111 can be mounted, for example, by welding on the periphery 103 outside of the core 101, or the combined rim 111 and core 101 may be formed from a single piece of material, such that the outer periphery 103 is formed when said single piece of material is folded/stamped. Alternatively, core 101 and rim 111 are formed in a casting process. The core 101 is equipped with a plurality of openings 121. Preferably, said openings 121 are equiangularly arranged in a circular pattern at a fixed distance from a central point of the central opening 105 . The openings 121 are equipped with tabs 123, said tabs 123 preferably being an integral part of the core 101 and formed by folding the material along an uncut edge 124. For example, the openings 121 may be rectangular, so that the tabs 123 are formed by cutting along three edges, thus leaving a fourth edge uncut and thereby allowing said fourth edge to be folded. Preferably, the tabs 123 fold into the interior volume (not shown). Preferably, the tabs 123 are evenly bent for all openings 121, so that a homogeneous pattern of openings 121 and tabs 123 is formed. When the abrasion wheel 100 is rotated by a rotating tool, the tabs and attached openings suck in a stream of air, so that air is forced onto a surface interior (not shown) of the rim 111. Thus, said air flow provides air cooling of the abrasion wheel. Air cooling is essential when using the abrasion wheel 100 for grinding purposes, where heating due to friction may occur.

The rim 111 is arranged orthogonally to the plane of the core 101, that is, the rim extends in a direction parallel to the central axis L. The rim comprises an outer surface 113 and an inner surface (not shown). The inner surface faces the inner volume (not shown) of abrasion wheel 100 partially defined by core 101 and rim 111. Outer surface 113 comprises a plurality of grooves 131, eg, carved into said outer surface. Said plurality of grooves 131 wrap around the central axis L. The grooves 131 are arranged forming a helix with an axis colinear and coincident with the central axis L. The helix and grooves 131 drawn in Figure 1 are greatly exaggerated.

In a non-inventive alternative, the grooves 131 are parallel to each other and to the outer periphery 103 of the core 101. Alternatively, the grooves 131 are tapered with respect to the outer periphery 103. Between said grooves 131, intermediate protruding spaces 132 are formed, said spaces 132 inevitably having the same path, for example, a helix, as the grooves 131. A gravel material 141 is disposed mainly on said spaces 132, thus leaving the grooves 131 free of gravel material 141 . See Figure 5a and Figure 6a for a cross-sectional view of the grooves 131, gaps 132 and disposed gravel material 141. Said gravel material 141 is made of a hard material, such as tungsten carbide, having a hardness of 9 on the Mohs scale. When the grinding wheel 100 is rotated and a product is applied to the grit, the grit material 141 grinds down the product. Due to the absence of gravel material 141 in the grooves 131, particles separated by grinding from the applied product are less likely to accumulate in the grooves, thus increasing the useful life of the abrasion wheel 100. In other words, the particles entering the grooves 131 are free to move and eventually escape from said grooves 131, as opposed to the case where the gravel material 141 is disposed in the grooves 131, whereby the particles they will be trapped and accumulate more easily.

By arranging the grooves 131 and adjoining intervening spaces 132 in a helix or slanted with respect to the outer periphery 103, a greater amount of grit material 141 comes into contact with the product to be ground at any given time during the rotation of the grinding wheel. abrasion wheel 100, assuming the product impinges normally on the rim 111. In other words, the spirally arranged or inclined grooves 131 and spaces 132 provide increased clearance for a product to contact the material. 132 of gravel arranged in the spaces 132. Therefore, by being the grooves 131 and adjoining spaces 132 inclined or arranged in a helix, the grinding efficiency of the grinding wheel 100 is increased.

An additional effect of the grooves 131 and adjoining interspaces 132 being arranged in a helix or inclined with respect to the outer periphery 103, is that particles formed by grinding a product on the abrasion wheel 100 are guided away from the surface. abrasion wheel. In other words, the grooves 131 arranged in a helix or inclined, inevitably comprise ends 133 that terminate along one edge of the rim 111, where said ends 133 allow particles to escape from the abrasion wheel 100.

The presence of grooves 131 further increases the surface area of abrasion wheel 100, which in turn increases heat dissipation and thus increases the cooling capabilities of said abrasion wheel 100.

Figure 2 is a perspective view of the portion of the abrasion wheel 100 of Figure 1 shown from another angle. In this view, the interior volume partially defined by the core 101 and rim 111 is exposed. In this view, the inner surface 115 of the rim is shown. The depression 109 protrudes into said interior volume. The central opening 105 and the slit 107 are partially visible. Tabs 123 are shown to fold into the interior volume along an uncut edge 124 . Furthermore, the openings 121 are shown to be cut along three edges 221, 222, 223, thus leaving the uncut edge 124 uncut. All of the tabs 123 are folded along the same uncut edge 124 relative to the core 101, thus forming a homogeneous pattern along the full diameter along which the openings 121 are arranged. Preferably , the uncut edge 124 is orthogonal to the rim 111. The gravel material 141 is disposed in spaces between a plurality of grooves (not shown in this embodiment) on the outer surface 113 of the rim 111. The gravel material 141 is shown with more detail in Figure 5 and Figure 6.

Figure 3 shows a top view of abrasion wheel 100. The top view exposes the interior volume. The direction of the central axis L serves as a reference for Figure 1. The plurality of openings 121 is shown without tabs 123. However, it should be noted that, in the case where said tabs 123 are an integral part of the core 101, they do not it is optional to separate or join said tabs 123. The plurality of openings 121 are shown to be equiangularly spaced in the core 101 about the central axis L. The central opening 105 is shown to be arranged symmetrically about the central axis L. The wheel 100 of abrasion wheel is shown with two indentations 107, 107', for improved stability when mounting the abrasion wheel on a rotating tool (not shown). Depression 109 is indicated by a dashed line. The Gravel material 141 is shown disposed on an outer surface 113 of rim 111. The three cross-sections, AA, BB and CC, are indicated in Figure 4 and described in more detail below.

Figure 4 shows the cross sections indicated in Figure 3.

Figure 4a illustrates cross-section A-A comprising two of the plurality of openings 121. Tabs 123 are shown to be an integral part of core 101 and to be folded along an uncut edge 124, indicated by a dashed line. .

Figure 4b illustrates the cross section B-B. The tab 123 attached to the opening 121 is shown as an offset dashed box, due to the choice of viewing angle. The rim 111 is shown to be disposed orthogonally to the core 101. An edge of the rim 101 is shown to be mounted on the outer periphery 103 of the core 101, the rim 111 thus forming an acute angle of 90 degrees and an obtuse angle of 270 degrees. with respect to the core 101. The rim 111 comprises a plurality of grooves 131 arranged on the outer surface 113. The plurality of grooves 131 are separated by a plurality of spaces 132. A gravel material 141 is disposed in said spaces 132.

Figure 4c illustrates the cross section C-C. The abrasion wheel is rotationally symmetric about the central axis L. The direction of the central axis L corresponds to the given direction of Figure 1. The depression 109 protrudes into the interior volume, partially formed by the core 101 and the rim 111. More specifically, depression 109 displaces central opening 105 toward a midpoint defined from the width of rim 111. Thus, the stability of abrasion wheel 100 is increased when abrasion wheel 101 is exposed to rotational forces.

Figure 5 and Figure 6 show two possible fragments of the outer surface 113. For reference, the orientation of the fragments with respect to rim 111 is indicated by the x and z directions, which are further defined in Figure 1. A cross-sectional view of each fragment is shown in Figure 5a and Figure 6a. The fragments are examples of possible arrangements of the adjoining grooves 131 and spaces 132, and thus do not limit the scope of the invention.

Figure 5 illustrates a fragment of an outer surface 113 comprising a large spacing of grooves 131, ie large spaces 132. Furthermore, the grooves 131 and adjoining spaces 132 are inclined, forming an angle 1 with respect to the x-direction. The slope forms a helix along the circumference of the rim 111 and about an axis that coincides with the central axis L (not shown). Gravel material 141 is disposed in the spaces 132 such that the grooves 131 are free of gravel material 141 . A shaded triangle indicates a possible impact zone 150 for a product to be ground by abrasion wheel 100 . During rotation, a product that produces a normal incidence, that is, "enters" the gravel of the short leg 150a, as shown by the direction of the arrow E, produces an impact with the gravel material 141, along along the entire length of the hypotenuse 150c. In the case of non-inclined grooves 131 and gaps 132, the impact will be reduced to the width of the gaps 132 in which the gravel material 141 is disposed. Thus, said impact zone 150 illustrates the increased efficiency of the abrasion wheel 100, when the grooves 131 and adjoining spaces 132 are arranged in a helix or inclined.

Figure 5a illustrates a cross-sectional view of the fragment of Figure 5. Preferably, the grooves 131 are V-shaped, as illustrated. Preferably, the gravel material 141 protrudes in portions of the grooves 131 illustrated by the projection 142.

Figure 6 and Figure 6a (cross-sectional view) illustrate a fragment of an outer surface 113 comprising a small gap of grooves 131, ie narrow spaces 132. Also, the slope given by angle 1 is less than the fragment illustrated in Figure 5.

Figure 7 illustrates a close-up cross-sectional view of a V-shaped groove 131 and gravel material 141 disposed primarily in the intervening spaces 132 between said grooves 131. It is seen how a protrusion 142 of gravel material 141 is formed. gravel, so that clearance is provided between the slopes of the furrow and said gravel material 141 .

reference numbers

E Product entry direction

L center axis

1 Angle with respect to the x-direction

100 abrasion wheel

101 Circle Core

outer periphery

center opening

cleft

Depression

Flange

outer surface

inner surface

openings

tabs

raw edge

Grooves

spaces

Groove End 131

gravel material

Outgoing

impact zone

to Cateto

c Hypotenuse

Edge

Edge

Edge

Claims (11)

Yo. An abrasion wheel, comprising - a circular core (101) having an outer periphery (103), - a rim (111) arranged orthogonally to said circular core at said outer periphery, said rim comprising an inner surface (115) and an outer surface (113), and - a gravel material (141) arranged in at least part of said outer surface (113), wherein the outer surface (113) of said rim (111) is provided with a plurality of grooves (131), the grooves being free of gravel material and wherein a major part of said material (141 ) of gravel is disposed on said outer surface of said rim, in spaces (132) between said grooves, whereby particles formed from a product being ground are guided away from the abrasion wheel along said grooves, characterized in that a plurality of openings (121) are provided in said core (101) to provide a stream of air directed towards said inner surface (115), and in that said grooves (131) wrap around of a central axis (L) of the abrasion wheel and are arranged forming a helix having an axis collinear and coincident with the central axis. 2. An abrasion wheel according to claim 1, wherein the circular hub comprises a central shaft and a central opening for mounting the abrasion wheel to a rotating tool. 3. An abrasion wheel according to claims 1 and 2, wherein the cross section of the grooves is V-shaped. 4. An abrasion wheel according to any of the preceding claims, wherein the rim is a belt mounted on the outer periphery of the circular core along an edge of said belt. An abrasion wheel according to any of the preceding claims, wherein a tab is attached to each opening of the circular core, a plurality of tabs thus being provided on said circular core. An abrasion wheel according to any preceding claim, wherein the tabs are formed from excess material folded from the openings, the tabs thereby being an integral part of the circular core. An abrasion wheel according to any preceding claim, wherein the tabs are oriented such that air is forced over the inner surface of the rim, thereby providing air cooling to the abrasion wheel. 8. An abrasion wheel according to any preceding claim, wherein the grit material forms a protrusion above said grooves. 9. An abrasion wheel according to any preceding claim, wherein the grit material is tungsten carbide. 10. An abrasion wheel according to any preceding claim, wherein the grit size is between 14 and 220. An abrasion wheel according to any of the preceding claims, wherein said abrasion wheel is mounted on a rotating tool, said rotating tool being capable of providing rotation about a central axis of the abrading wheel.