JP2003513811A - Consumable rotating disk for surface treatment of materials with a substrate made of injection-moulded material, especially plastic - Google Patents

Abstract

The invention relates to a consumable rotating disc for finishing material surfaces. A material finishing layer is fixed using binding means to a bearing surface on a front face of a disc-shaped base body which is used with the rotating disc. The base body consists of an injection-moulded material and has a central hub (6) for receiving a drive shaft of the rotating disc, the bearing surface is provided in an annular zone around the hub (6) and a first ring-shaped cross-sectional zone of the base body, which lies radially further towards the centre than the bearing surface, is configured as a first ribbed profile (30a, 30b, 32) with intersecting ribs and openings therebetween. According to the invention, a second, ring-shaped cross-sectional zone of the base body (4), which is located on the rear side of the bearing surface is configured as a second ribbed profile (30b, 30c, 30d, 32) with intersecting ribs and openings therebetween.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a consumable rotating disk for machining a material surface having the features of the preamble of claim 1 (excluding the last 5 lines).

[0002]

[Prior art]

The fan-shaped grinding disc or elastic flap disc is MAGNAM
It is already on the market under the trademark COOL TOP. In this known fan-shaped (hereinafter referred to as grinding) disc, all the features which have been described only selectively with the "in particular" in the preamble of claim 1 have been realized. Specifically, an annular band having a support surface of a grinding plate is formed of solid plastic, and a first annular ring having a relatively narrow radial direction following an annular support receiving surface in the radial direction. In the front of the base body, which follows the cross-section band, the cross-section band being spaced from the support surface, the radially extending webs at regular intervals between the grooves are of relatively large wall thickness, ie about 2 mm. Is provided with cup-shaped groove portions distributed in the circumferential direction.

In the circumferential direction, these grooves extend on average about 5 mm wide or more. The first ribbed profile thus formed is designed to be closed on the surface of the substrate with the supporting surface and open on the other surface. To the inside, a hub disk without ribbed profile follows in the radial direction, which hub disk is aligned radially with the surface on the remaining surface of the substrate which is spaced from the support surface. On the front side of the basic body with the supporting surface, the hub disc is recessed like a basin so as to reduce the axial wall thickness. The hub has a circular central opening in the center.

In this consumable fan-shaped grinding disc, a first ribbed profile is arranged between the support surface for the material working layer and the hub, which increases the flexibility of the fan-shaped grinding disc without significant material savings. Increase.

[0005]

[Outline of the Invention, Effects]

The invention relates in particular to substrates made of injection molding materials. In addition to the injection-molded plastics or injection-molded plastics which are preferably considered, other injection-moldable materials, for example metal, can also be considered. However, in this case, the present invention provides for a consumable rotating disk such that the substrate is formed by a method different from the injection molding method, such as the formation of a sheet or a substrate made of non-injection moldable glass fiber reinforced plastic. different.

In a rotating disc of the type according to the invention, not only is the material processing layer subject to wear in use consumable, but it is also advantageously permanently connected to the material processing layer via a coupling means, in particular an adhesive substance. The substrate used is also consumable. In addition to the adhesive material that is separate from the material processing layer, a bonding means for the material processing layer may be used as the bonding means, and the bonding means may be a combination of the abrasive material and the bonding material.

The material processing layer is prefabricated from at least one element having a geometrically amorphous and cutting force similar to that of the substrate, preferably the material processing layer and the substrate 1
It is expendable in common with a rotating disc connected to one unit, and can thereby always be used only once.

[0008] Thus, this condition is not comparable to a reusable construction with a material working layer, in which the substrate can be refitted after the material working layer is exhausted (see especially US Pat. No. 5,138,735). 1, reference numbers 32 and 34 and column 2, line 64 to column 3, line 2, U.S. patent application specification US-A4979336 especially FIG. 2 and U.S. patent application specification US-A4924634 especially FIG. 7 and international application WO92 / 00163.
In particular FIG. 2 and finally European patent application specification EP 0 397 624 A2 in particular column 2 column 4
See FIGS. 4-6 in combination with lines 7-51 and column 3, lines 38-53). The substrate itself made of a reusable disc-shaped substrate made of rubber and having radially extending reinforcing ribs on the back side, the reinforcing ribs simultaneously having a cooling rib function, is already known from the last mentioned publication. Known (column 2, lines 38-51).

The material processing layer provided on the surface of the substrate completely covers the surface having no opening. The ribs extend circumferentially in a continuous manner on the back side of the substrate without intermediate reinforcement from the outer edge of the substrate to the central portion of the substrate forming the hub. This known rotating disk with reusable substrate is designed as a honing tool for special cases, in which case the soft fiber structure of the material processing layer is removably attached to the support surface. can do.

The present invention, on the other hand, firstly concerns the use of a rotating disc as a grinding tool. Such modern grinding tools should be able to be driven at a maximum working speed of 80 m / s, which corresponds to a minimum breaking speed of 150 m / s. Test rules for the corresponding semi-flexible grinding plates, thin plate grinding plates, sector grinding plates and vulcanized fiber grinding plates can be found in the special committee of the magazine ZH1 / 670, Part 4, BGZ, published in July 1997 in particular. "Iron and Metal I" pages 2205 and 3101, order number ZHI-
670 Carl-Haymans Publishing Cargae and corresponding brochure ZH1 /
671, July 1997, pp. 15-17, "Principles for Performing Model Sample Testing and Certification of Abrasives Composed of Bonded Grinding Means and Grinding Means on Substrates".

The centrifugal forces generated in the semi-flexible consumable rotating disc according to the invention are then very high and have to withstand this high load during driving without breaking and peeling. Requires a stable design of the substrate. On the other hand, the cost ratio of the material of the substrate is very high compared to that of the material processing layer, and often also exceeds the cost ratio of said layer. This cost ratio is very problematic for competitive reasons only in the case of mass-produced rotating discs which can be consumed according to the invention. In addition, costs are incurred for the most environmentally-friendly recycling.

This problem has been known for some time and has not yet been adequately solved in spite of the consumable rotating disk nature of the problem. Therefore, in the German utility model G9216621.0U1 almost ten years ago, the following is stipulated in the transition section on page 1 and page 2 of the specification:

“Supports made of synthetic plastics have environmentally damaging properties and, in an exhausted state, cause difficult problems for disposal and disposal. In this case, the grinding tool is a consumable material in which the grinding layer wears out. However, it must be taken into account that the support remains and must be disposed of. Such grinding tools wear quickly and require large numbers. " The substrate is formed in two parts to eliminate difficulties, one part itself being consumable and penetrating the other part. In particular, the consumption of decaying natural materials is taken into account, which limits their applicability.

Already 25 years ago, a proposal was made according to US patent application specification US-A 3889430 (see, eg, column 2, lines 32 to 66). There, the layers are embedded in the production of a consumable rotating disc, which is ribbed and, if necessary, of a substrate structure which is injection-moulded from plastic and which extends to both surfaces of the substrate. It was thereby to connect through the penetration of the substrate to form a bridge. But this is
It requires the production of relatively complex and wearable rotating discs. The present invention relates to a conventional structure, in which the respective material processing layer is generally rigidly attached to the annular bearing surface by external coupling means, for example an adhesive substance.

Within the framework of the invention, this support surface can then be designed in particular without openings, ie closed. However, it is also possible for the invention to have a design with openings in the support surface, ie for example perforating or perforating, or with recesses. The purpose is to ensure good adhesion, for example due to the material-processing layer, on which the bonding means, such as an adhesive, are externally mounted on the support surface.

Thus, the problem underlying the present invention is to significantly reduce the mass of the substrate in such a conventional construction of a rotating disc that can be consumed, and thereby the amount of rotating disc that can be consumed. It significantly improves the pricing potential of products and at the same time substantially reduces the amount of material that needs to be recycled. All of this should be achieved by a design that is comparable to and can exceed the requirements of maximum working speeds up to 80 m / s and minimum breaking speeds up to 150 m / s. In the process,
The requirements of sector surface grinders with overlapping grinding plates (abrasive flaps) on one side or on both sides (claim 18) of the surface are fulfilled.

According to the invention, this object is solved by the characteristic properties of a consumable rotating disc having the features of the preamble of claim 1. In addition to the first ribbed profile, which is arranged between the support surface of the material processing layer and the hub and which together determines the semi-flexible properties of the rotating disc, in this case an additional second A ribbed profile is created on the back of this support surface.

Both ribbed profiles are formed open between the ribs. Its ribbed profile is designed with at least the solid substrate and the force requirements of a high performance rotating disk of the type that can be well and completely consumed, reducing essential material savings and associated manufacturing and recycling costs. can do. The design possibilities in forming this profile give the parties in this case a great deal of suitability for their requirements depending on their type of application.

In the rotating disc referred to as the Magnum Cooltop ™, hereinafter simply referred to as the generic rotating disc, the hub is within a flat annular disc forming the central portion of the base body. A simple center hole. When this hub is inserted into the first ribbed profile, on top of the better reinforcement in the central area of the rotating disc,
Since the hub is designed to be expanded in the axial direction, a good mountability of the rotating disc on the drive shaft is obtained.

Furthermore, in a general rotating disc, a first annular cross-section strip is stepped between the hub and the support surface for the material processing layer, whereas the other front face is formed. The flat annular disc forming the hub on the side transitions into a radially continuous region without steps, and the first ribbed profile is open towards this front side and on the front side mentioned first Closed towards and placed alone in this tier.

Apart from that, according to the invention, there is provided a design of a rotating disc, which is bent at a right angle in the radial direction at least on the front side of the base body on which the support surface is formed in the radial direction, and is supported on the surface on the base body. A surface is created in which the first ribbed profile is incorporated together.

In a typical rotating disc, a first ribbed profile is provided in the region of the step between two wide, concentric annular ribs, in an annular gap between both ribs. A relatively wide radial web extends in the shape of a spoke.

Instead of an arrangement as described above having concentric ribs and radially extending reinforcing ribs, the ribs of the first and / or the second ribbed profile according to the invention are in some other way linear. Of the first and / or second ribbed profile, either straight, curvilinearly or in a mixture of straight and curvilinear, or directly offset,
Alternatively, it is also conceivable to mix the directly and the staggered ones to cross each other.

It is then sufficient if most or preferably all of the ribs of the first and / or the second ribbed profile are designed as a narrow web. The generally radially extending ribs and / or the circumferentially extending ribs may extend in a framed fashion or in a framed fashion.

If in the case of the second ribbed profile according to the invention, concentric circumferential ribs and radial ribs, as in the case of the first ribbed profile, except for the above possible deformations, Is also called the web, but it is preferable that a combination of and is provided. Thus, the first ribbed profile and the second ribbed profile are fused into a single ribbed profile, possibly and preferably, but not necessarily, extending all or at least some radially. The ribs of the first and second ribbed profiles can be continuous with each other. In the process, it is possible to obtain annularly extending ribs which belong in common to the first and second ribbed profiles. In this case, the first ribbed profile also has only one additional, radially extending annularly extending rib, which serves here preferably to define the central opening of the rib in the above sense. be able to. This does not exclude, in the case of the first ribbed profile, that at least one further annularly shaped rib is also incorporated into said ribbed profile.

If the first and the second ribbed profile have a common rib that extends annularly in the above sense, the second ribbed profile according to the invention only has two additional radial directions. It is sufficient to have ribs that extend annularly on the outside. In this case, various modifications are possible. Preferably, one rib then supports the bearing surface for the material processing layer in the radial central region, and two further ribs include the ribs common to the first ribbed profile. Subject to radially inner and radially outer limits of the surface.

All of the above structural measures have been made such that a generally open ribbed profile consisting of a first ribbed profile and a second ribbed profile covers the outer edge of the bearing surface and the hub over the entire radius of the base body. Allows extension to and from the inner central opening. Thereby, in general, by means of the measure according to the invention, the base body has a low mass distributed over its diameter and only a small mass in the direction parallel to the drive axis, but the highest possible in operation. A base that can withstand the driving speed is obtained.

Basically, it is also possible for the first ribbed profile and the second ribbed profile to remain open on the front side of the substrate, which is remote from the support surface for the material processing layer. This enables a one-piece injection-molded production of the substrate. However, preferably at least in part there is provided a cover of this ribbed profile open on the back side. The cover may, but need not, be an injection molded part on its side. It is preferred that the cover extends over and closes the entire extended width of the open ribbed profile. Correspondingly, at least one cover of the open first and / or second ribbed profile, which complements the basic body, is provided on the front side of the rotary disk, which is spaced from the support surface. This cover is
The cover can then be chosen to supplement the substrate so that it appears as a solid, three-dimensionally extending disc-shaped object when viewed from the outside.

The cover can itself be foil-thinned, for example if it is solely used as a nameplate support or label support. This foil thickness of the rear cover is usually also sufficient for the wall thicknesses of substrates with both ribbed profiles.

In other words, the first side, which is provided with the supporting surface for the material processing layer corresponding to the first side,
The cover of the second ribbed profile can also be foil-thinned. The wall thicknesses of these walls can then also be chosen to be different in different wall areas and / or in comparison with the front side of the rear part and the front side of the front part.

As a dimension for the wall thickness, the statically required wall thickness of the web of radially extending ribbed profile and / or of the web of circumferential extension, depending on the purpose. You can choose. In the case of borders, these webs and the covers on both front sides can be formed essentially or identically.

The cover of each ribbed profile on the front side of the rotating disc, which is remote from the support surface, does not have to be made flat, which may be sufficient, for example, to function purely as a label support. . It should also add at least one radial portion of the first ribbed profile and / or at least one radial portion of the second ribbed profile with a corresponding additional profile, depending on the purpose. Is.

This results in great stability of the base body and the cover itself due to the combination of the cover on the back side of the base body and this base body, for example by means of plugging or preferably fitting together or by welding. In that case, the addition of the ribbed profile may be sufficient by adding only a small portion of the axial extension of the rib.

A preferred arrangement is for the cover to add the entire first ribbed profile and the radially inner portion of the second ribbed profile between the ribs around two adjacent circumferences. The radial outer part of the second ribbed profile is then preferably covered with a flat cover without additional profile, thus allowing a certain axial elasticity in the circumferential region of the rotating disc. Become.

The cover provided as a complement to the substrate can also have another function in addition to the supporting function for the label. For example, it can function as a protective cover on the back side of the base of a normally open rotating disc.

It is also possible to use this backside cover on the cover side as a support for another material processing layer, which is arranged in front of the original substrate of the rotating disc. It may be of the same, similar or different type as the material processing layer described above.

When the cover on the support surface of the base body and / or the cover on the rear surface side of the base body is also used as the support tool for the material processing layer, concentric circumferential grooves can be provided by a known method. The groove is an adhesive for the material processing layer, so that the material processing layer adheres securely to the substrate or the rear cover at the relevant support surface during driving, ie protected against dissociation and relative twisting. Agents or other binders can be housed.

As mentioned earlier, this concentric groove can be replaced by a continuous or partial recess, for example a recess, a hole or another type of recess groove. The invention is explained in more detail in the examples below with reference to the schematic drawings.

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION

The rotary disc 2 according to FIG. 1 has a disc-shaped base body 4 with a central hole 6 for accommodating a drive shaft, not shown, directly or indirectly. A first annular band 8 or a second annular band 10 is formed on both front surfaces (surfaces) of the rotating disk 2 around the central hole 6 at intervals to the peripheral edge thereof or beyond it, and these are formed. The annular band has a corresponding annular-shaped bearing surface on which the first or second grinding plate 12 or 14 is mounted.

The grinding plates then respectively extend in the radial direction and overlap in a fan-like manner in the circumferential direction, the direction of this overlap being opposite in the first annular band 8 to that in the second annular band 10. It has become. In that respect, the rotary disc 2 corresponds to the known structure of Japanese Patent Application Sho 63-168055, for example.

This is a basic structure of a known rotating disk having material processing layers on both surfaces of the rotating disk. According to the present invention, in any case of the base body 4 of the rotary disc 2, a material processing layer is attached to one surface of the base body, and in particular, as shown in the embodiment of the surface of the rotary disc shown in FIG. It is equipped with grinding plates that overlap in a fan shape.

Towards the other surface, the substrate has an open profile which will be explained in more detail below according to FIGS. This open profile can be closed by the cover shown in Figures 8 to 10a on the back surface, as shown in Figures 11a and 11. In this case, the closing cover does not need to be fitted with the material processing layer on its cover side, but it is possible.

Furthermore, the cover can simply be used as a profile cover with and / or without functioning as a label support and / or nameplate support. If this cover forms a support surface for the material processing layer from the outside on the cover side by a method not shown, and forms a support surface for the grinding plate which overlaps in a fan shape although not shown in particular,
A rotating disc having the basic design of FIG. 1 is produced. In that design, the rotating disc has a fan-shaped grinding plate on both surfaces of the rotating disc, which, if desired,
They can be in opposite directions as shown in FIG.

If only the substrate 4 is fitted with the material-processing layer, but its back cover is not fitted, as shown in FIG. 1, the second layer arranged in the second annular band 10 of FIG. It is considered that there is no grinding plate 14. Instead of the fan-shaped first grinding plate 12, which in this case is the only grinding plate 12, grinding or polishing properties, in particular monolithically prefabricated and then bonded to the substrate by bonding means, in particular adhesives like,
It can be any other material processing layer.

However, in the manner shown, the grinding plate 1 overlapping the remaining first annular band 8 in a fan shape.
The use of 2 is preferred. Hereinafter, the substrate 4 will be described in detail with reference to FIGS.

In FIGS. 2 and 4 showing the (front) front side of the base body 4, the (first) annular band 8 is shown first. An annular support surface 20 for the grinding plate 12, which is concentric with the central hole 6 and is formed by annular grooves 18 on the front side at equal intervals in the radial direction and formed in the annular band 8, will be described. The annular groove 18 is used for a good fixation of the adhesive substance or other coupling means, whereby the grinding plate 12 is fixed to the support surface 20.

Instead of or as a complement to the annular groove, yet another profiling can occur up to a penetration, such as a drilling or a drilling with any drilling cross section. Such profiling can likewise be used for a good attachment of the coupling means on the support surface of the grinding plate 12 or other material processing layer which is arranged further outside the support surface 20 on the front side. If no holes or holes are provided,
As shown, the entire annular band 8 is formed closed.

Similar to the annular band 8, the region on the front side of the base body 4 between the annular band and the central hole 6 is also formed so as to be closed. However, the formation of the embodiments described above can be so modified, if necessary, if through-holes are required, for example if additional fixing holes are provided for the holding device if required.

In FIG. 6 a, the annular groove 8 has a relatively small depth in relation to the wall thickness on the front side of the substrate 4 and is relatively wide, eg in the shape of a pot, ie the outer width of eg the annular groove. It has an intermediate web equivalent to. Furthermore, FIG. 6 shows that the support surface 20 is inclined with respect to the axis perpendicular to the axis of the hub 6 and extending radially for each radius, with an acute angle α of, for example, up to 12 °.

Further, from the cross-sectional views of FIGS. 6 and 7, it can be seen that the support surface 18 is arranged so as to move forward on the front side with respect to the radial center plane of the base body 4. In that case, the cross section is axially symmetrically bent back from the inner edge of the annular band 8 or the supporting surface 20 toward the hub 6. Radially inward of the annular band 8, which is also annularly shaped, has an initially annular conical portion 26 which is rearwardly directed and then forms a flat disc 28. This flat annular disc is parallel to the imaginary connecting surface of the circular inner edge 24 of the annular band 8 lying radially outwards. The annular shaped area 22 is therefore the base body 4
It has a shape that is bent at a right angle from the front of the front part to the rear.

Between the outer edge of the annular band 8 and the central hole 6, the entire base body 4 is formed as a ribbed profile that opens rearward. This ribbed profile consists of an annular rib 30 which is concentric with the hole 6 and radial ribs 32 which start from the hole 6 and are equiangularly distributed over the circumference. These ribs 32 extend radially between the hole 6 and the outer edge of the base body 4, i.e. through the right-angled region, forming a radially continuous rib. This is particularly shown in FIG.

More detailed consideration is needed for each circular rib 30. The radially innermost annular rib 30a forms the sleeve-like hub of the rotating disk 2 or the base body 4 by the sleeve-like axial expansion of the hole 6. A circular rib 30b, which continues further outward in the radial direction, is slightly further outward in the radial direction than the circular inner edge 24 of the annular band 8 and describes, for example, the radial inner edge of the support surface 20. The two annular ribs 30a and 30b in the process form a first annular cross-section band 34 of the base body 4, which is arranged radially further inward of the support surface 20.

In the axial direction behind the annular band 8 or the supporting surface 20, between the circular rib 30 b belonging to the first annular cross-section band 34 and the annular rib 30 d placed on the radial outer edge of the base body 4, A second annular cross-section band 36 is formed, which at the same time defines the cylindrical hub 6 and the concentric base body jacket surface.

The supporting surface 20 extends over the entire front surface in the plane area of the annular band 8 as an axial extension of each of the two annular ribs 30b and 30d. An intermediate rib 30c fitted approximately centrally between the annular rib 30b and the outermost annular rib 30d supports in this case the radial central region of the support surface 20.

The two cross-section bands 34 and 36 then together describe a completely open profile on the back side of the substrate 4. The free edge of the radially innermost annular rib 30a forming the hub and the radially outermost annular rib 30d forming the outer jacket of the base body 4,
Substantially wholly or largely in the plane of the same radius as distinguishable from the radially extending reference line shown.

The cut line D-D shown in FIG. 2 is selected as the cut line E-E or the cut line F-F according to FIG.
I can understand. FIG. 3 shows that the section line E-E extends along one radial rib or two radial ribs 32 aligned with each other, whereas the section line F-F extends in the angular space between two adjacent radial ribs 32. .

It is clear that generally two diagonally opposite radial ribs are juxtaposed. This difference in cross section gives different cross sectional views in FIGS. 6 and 7. FIG. 6 shows the height of the radial ribs 32 in each of two straight lines, whereas in FIG. 7 the actual front wall thickness of the substrate 4 is identified.

In the space between the radial ribs according to FIGS. 7 and 7a is shown a local or annular nose 38, which is the rear surface side close to the rear side of the radially outermost annular rib 30d. It is bent inward at the end of. The circular noses are respectively arranged between the radial ribs 32 and can be used for fixing the cover on the back side of the ribbed profile opened at the rear portion of the base body 4, which will be described further below, but are forcibly used. do not have to.

The back side of the cover 40 consists of two concentric, flat, annular discs 42 and 44 extending on respective radial planes, which are axially separated by a small step 45 with respect to the annular rib 30 b. Front side outer surfaces which are in communication with each other and which are completely closed can be formed on the back side of the base body 4.

According to FIG. 10, the annular disc 42, which in this case helps to form the holes 6, is slightly axially displaced outwards and the annular disc 42 is axially displaced inward. The back outer surface 42, 44 of the substrate is then merely used as a support for labels and / or other prints.

As described above, the rear outer surface of the cover 40 (not shown) is attached to the annular disc 42.
Can form an additional annular-shaped support surface for the grinding plate 14 of the rotary disk arranged on the rear side. The grinding plate then has, on the second annular band 10 which is then formed by the radially outermost annular disc 44, an annular groove 18 or another adhesion-improving surface formation with respect to the first grinding plate 12. It can be fixed in a manner similar to that described and described for the support surface 20.

Inside the cover 40 facing the ribbed profile on the open back side of the substrate 4,
A basic ribbed profile is provided to supplement the open ribbed profile on the back side of the substrate 4. This basic ribbed profile is complementary with respect to the opposed radial ribs 32 and the annular ribs 30 of the basic body, allowing radial displacement of the radial ribs in the fully assembled state according to FIG. 7, but this is not essential. , It is usually not supposed to be provided.

The features are listed as follows: A few annular ribs 46c that can complementarily connect to the annular ribs 30c and 30d of the base body 4.
The annular space between and 46d is spaced from the radial ribs, so that the annular disc 44 is designed flat like a plate there. The ribs 30b on the two cross-section bands 34 and 36 of the base body 4 are opposed only by the steps 40, not the basic annular ribs on the cover 40.

Finally, the basic annular rib 46a of the cover 40 is finally placed on the base body 4 in opposition to the annular rib 30 forming the hub, which annular rib substantially forms the hub. The basic radial ribs arranged completely diagonally correspond to the radial ribs 32 of the base body 4.
Inside the two annular sections 26 and 28, with an angular distribution corresponding to ## EQU4 ## interrupted by a step 45.

The illustrations in the main figures 2 to 11 are dimensionally faithful with respect to practically possible embodiments. Partial drawings of the details are shown in FIGS. 6a, 7a, 10a and 11a, each magnified five times. In particular, the wall thickness outside the base body 4 and the cover 40 on the back side thereof are thin in a thin plate shape, and in this case, they can be compared with the web-like thickness of the annular rib 30, the radial rib 32, the basic annular rib 46 and the basic radial rib 48. I understand.

In this case, this wall thickness is furthermore chosen to be exactly the same or in any case approximately the same. Thus, when designing the rotating disc 2 that is stable against a high-speed load, the substrate 4 that can be consumed together with the rotating disc 2, and the cover 40 on the back side, if necessary, is very useful. It can be done with less material.

[Brief description of drawings]

[Figure 1]   Perspective view of a rotating disk for material surface processing;

[Fig. 2]   A plan view of the front surface of the base of the rotating disk;

[Figure 3]   Plan view of the backside of the substrate according to FIG.

[Figure 4]   1 and 2 are perspective views of the base body seen from the front obliquely.

[Figure 5]   Same as above, perspective view of the corresponding rear view of the base

[Figure 6]   Sectional view along line EE of FIG. 3 according to the detail enlarged cutaway view of FIG. 6a.

[Figure 7]   Sectional view along line FF of FIG. 3 according to the detail enlarged cutaway view of FIG. 7a.

8 is a view from above of the rear cover of the basic body of FIGS. 2 to 7a, a plan view from the axial direction of the internal assembled state;

[Figure 9]   A perspective view of the cover according to FIG. 8 as seen obliquely from the inside.

[Figure 10]   8 is a sectional view taken along line C-C of FIG. 8 in enlarged detail from FIG. And

FIG. 11 is a diagonal cross-sectional view of an assembled configuration consisting of the substrate according to FIGS. 2 to 7a according to an enlarged detail cutaway view from FIG.

Claims (22)

[Claims] 1. A front surface of a disk-shaped base body, which is subjected to wear, in which a material processing layer consisting of at least one element with a geometrically irregularly shaped blade on a supporting surface is consumed along with a rotating disk. An expendable rotary disc for processing the surface of a material, which is fixed to the supporting surface of the substrate by coupling means, in particular an adhesive substance, the base body being an injection-molding material, in particular plastic, and which directly or indirectly A central hub for supporting a drive shaft for the support surface, the support surface being provided in an annular band around the hub, the first annular shape of the base body being arranged further inward in the radial direction than the support surface. A cross-section band of the shape has a first ribbed profile with ribs intersecting between the ribs and an open (
Open) design, in particular the first annular cross-section strip and the annular strip with the support surface therein are arranged radially adjacent to one another, in particular the front face of the rotating disc. The first ribbed profile forming the side bearing surface has a closed (closed) design, in particular the first ribbed profile has radially extending ribs, the ribs having an entire circumference. Distributed over at least two concentric annular ribs which reinforce each other, in particular the material working layer is formed by a working sheet, in particular a grinding plate, which extends in the radial direction and overlaps in a fan shape in the circumferential direction. Is located on a surface, in particular the support surface is arranged with axial movement relative to the hub center plane, and especially the support surface is arranged at an acute angle (α) with respect to the hub center plane. What is provided is that a second annular cross-section band of the base body, which is arranged on the back side of the supporting surface, is formed by crossing ribs as a second ribbed profile and an open design between these ribs. A rotating disk that can be consumed, characterized by being present. 2. A rotating disc according to claim 1, wherein the hub is inserted into the first ribbed profile. 3. A rotating disc according to claim 1, wherein the first ribbed profile is shaped to conform to the curved profile of the substrate in the radial direction. 4. The rotation according to claim 1, wherein the ribs of the first and / or the second ribbed profile extend linearly, curvilinearly or in a mixture of linear and curvilinear. Disk. 5. The ribs of the first and / or the second ribbed profile intersect directly, staggered, or in direct admixture in a mixture with one another.
Rotating disk by either. 6. The second ribbed profile has ribs distributed over the entire circumference of the second cross-section band and extending in a radial direction, these ribs being at least two concentric and annular ribs relative to each other. A rotating disc according to any one of claims 1 to 5, which is mutually reinforcing. 7. A rotating disk according to claim 1, wherein the first and second ribbed profiles are intermingled to form a cohesive ribbed profile. 8. A rotating disc according to claims 6 and 7, preferably wherein all, radially extending, ribs of the first and second ribbed profiles merge and are continuous. 9. A rotating disk according to claim 6, wherein the first and second ribbed profiles are ribs that are attached to one annular shape. 10. A rotary circle according to claim 9, wherein the first ribbed profile has only one further radial further radially inner ring-shaped additional rib, preferably as defining a central bore of the hub. Board. 11. The second ribbed profile has two additional ribs which are annularly located further outward in the radial direction only, and preferably the ribs have a radial central region on the bearing surface. A rotating disc according to claim 9 or 10, which is supported by the two, and both of the two ribs comply with the definition of the radially inner and radially outer bearing surfaces. 12. A rotating disc according to claim 1, wherein most, preferably all, of the ribs of the first and / or second ribbed profile are shaped as a small web. 13. A rotary disc according to claim 1, wherein the ribs extending radially and / or extending circumferentially are aborted in the form of a framework. 14. At least one base body additionally having a complementary cover of a first and / or second ribbed profile open on the front side of the rotating disc, spaced from the support surface. A rotating disc according to any of claims 1 to 13. 15. The cover according to claim 14, characterized in that it covers at least one radial part of the first ribbed profile and / or at least one radial part of the second ribbed profile. Rotating disk by. 16. The cover supplements all of the first ribbed profile and the radially inner portion of the second ribbed profile between two adjacent annular shapes and between circumferential ribs. And preferably providing a flat cover on the radially outer portion of the second ribbed profile. 17. A rotating disk according to claim 15 or 16, wherein the supplementary portion is one small portion of the axial extension of the rib. 18. A wear resistant device comprising at least one element with a geometrically amorphous blade, the cover itself being arranged on its cover side as the supporting component of the basic body on the other front side of the basic body. A second supporting surface of the second material working layer to be received is provided, which is preferably a working sheet, in particular a grinding plate, as the second working layer, which extends in the radial direction respectively on the second supporting surface. A rotating disc according to any one of claims 14 to 17, wherein the rotating discs are arranged by a fan-shaped overlap in the circumferential direction. 19. One support surface and / or one front surface of the substrate.
A support profile for the material layer extending radially on the outer surface facing the material processing layer on the other front surface (back surface) of the substrate, and preferably with a certain number of circumferential grooves. A rotating disc according to any one of claims 1 to 18 having an intermediate web. 20. A generally open ribbed profile consisting of a first ribbed profile and a second ribbed profile between the outer edge of the bearing surface and the central opening inside the hub over the entire radius of the base body. 20. A rotating disc according to any of claims 1 to 19 which extends. 21. A cover and / or a cover of each of the first and / or second ribbed profiles is formed as a thin foil on the front side of a substrate or cover provided on a supporting surface. Rotating disk by either. 22. The rotating disc according to claim 21, wherein the cover and the rib of the first and / or second ribbed profile have a substantially equal wall thickness.