EP3036063B1 - Form dressing roller - Google Patents

Description

The present invention relates to a novel web controlled form roller and a process for its preparation and its use for dressing diamond and CBN grinding wheels in ceramic, bakelitischer, metallic or synthetic resin bond and conventional grinding wheels with abrasives of corundum or silicon carbide.

For grinding profiles in workpiece surfaces grinding wheels are used, which have geometrically defined profiles on their grinding surface. These profiles must first be incorporated by dressing in a new disc and then reworked from time to time because of the occurring during grinding grinding wheel wear. Abrasive wheel wear can result in both impermissible profile deviations and inadequate grinding behavior, whereby the grinding forces, the temperature of the workpiece surface and / or the surface roughness get out of tolerance.

For shape-controlled dressing of conventional grinding wheels with abrasives made of corundum or silicon carbide diamond form dressing rolls have proven that carry on their circumferential surface a layer of diamonds. This diamond layer may consist of a diamond grain in a bond of electrodeposited nickel or of polycrystalline diamond aggregates, which are held on the peripheral surface of the form dressing roll by a galvanically or chemically deposited nickel precipitate or by a sintered metal applied in a sintering process.

Partly very small concave radii must be introduced into the rotating grinding wheel surface in order to realize very small corner radii on the workpiece, such as 0.1 mm or 0.2 mm. For this purpose, form dressing rollers are ground in their largest diameter, so that a convex radius with a corresponding diameter is formed. The resulting from the dressing of these fine edges wear on the Formabrichtrolle is naturally high. If the wear exceeds the profile tolerance, the form dressing roller must be reground or replaced.

Out EP 0 116 668 B1 For example, a form dressing roll has become known, which solves the problem of wear on a diamond form dressing roll by a diamond coating multilayered perpendicular to the axis of rotation of the dressing roll and a diamond coating monolayered in the direction of the axis of rotation. The diamond coating forms a profile perpendicular to the axis of rotation, which generates itself at constant dressing conditions and thus allows a larger amount of wear, without the profile gets out of tolerance. With the known Formabrichtrolle fine profiles can be realized by the choice of a finer grain size.

Dressing consists of profiling and sharpening the grinding wheel. The profiling is required to return the profile of the grinding wheel to the desired shape and tolerance. The sharpening takes place in order to restore the grinding ability of the grinding wheel, d. H. to bring the grinding forces, the heat development and the surface roughness created on the workpiece back into the required limits.

Out EP 1312 446 B1 is known a form dressing roller with a coating of diamond grains for dressing diamond grinding wheels. The Formabrichtrolle has a closed pad ring. It has been found that the known Formabrichtrolle permanently can not meet the increasing demands on the profile accuracy and the Wirkrautiefe on the dressed grinding wheel permanently.

Out EP 1837 123 A1 is a tool for shaping a workpiece surface with at least one receiving device and at least one annular machining disk for machining surfaces known.

The receiving device has at least one spindle with a plug connection and a fixing flange mounted thereon. Between the receiving device and the Fixierflasch at least one machining disk is axially received.

The machining disk has a central aperture which receives the connector and is made of a base material selected from a group including sintered materials, metallic bronze compounds, plastics such as phenolic resin compounds, ceramics and combinations thereof, and at least partially disposed on the periphery thereof Having equipped with abrasive bodies machining surface. The grinding wheels are materially bonded to the base material.

A good profile accuracy of the grinding wheel is crucial for the result of the dressing process. Before dressing, a dressing contour is specified by a program. When dressing, it is then important to adhere to the specified profile in a given timeframe exactly.

Increased effective roughness of the grinding wheel after dressing is decisive for the result of the grinding process. The increased thread roughness on the grinding wheel due to the dressing leads to an improved grinding action of the grinding wheel.

The object of the present invention is to provide a web-controlled Formabrichtrolle that produces a better profile accuracy and a higher Wirkrautiefe on the grinding wheel, the wear of Formabrichtrolle is so low that even long profile trains can be dressed on a diamond grinding wheel with great profile accuracy.

Another object of the present invention is to provide an economical and environmentally friendly method of making the web-controlled form dressing roll.

The object is solved by the features of claims 1, 11, 12 and 15. Preferred embodiments will become apparent from the dependent claims.

The object of the invention is preferably achieved by a form dressing roller with a carrier body, a freestanding lining ring with diamond grains in ceramic, metallic or synthetic resin bond for dressing diamond and CBN grinding wheels in ceramic, bakelitischer, metallic or synthetic resin bond and conventional grinding wheels with abrasives of corundum or silicon carbide with clamping screws that attach the pad ring between the carrier body and a mounting ring and a Receiving bore in the middle of the carrier body, wherein the lining ring has at least 3 recesses and the lining width of the lining ring is preferably ≤ the diamond grain size and / or the rod width.

The rotary form dressing roller according to the invention for the web-controlled dressing with a freestanding and interrupted hard material covering natural diamond, natural needle diamond, and synthetic diamonds in the form of CVD offers a long service life and leads to a grinding grinding wheel with an increased Wirkrautiefe. In CVD (chemical vapor deposition), a few micrometers thick CVD diamond layer is deposited on the substrates, for example carbide tools, in a vacuum chamber. Starting material here is typically a gas mixture of methane and hydrogen, the former serving as a carbon source. The form dressing roller is suitable for dressing all bonded grinding wheels and grinding wheels as well as for all diamond or CBN grinding wheels and CBN grinding wheels. Analogous to diamond, cubic boron nitride (CBN) can also be produced from the hexagonal modification of boron nitride using high-pressure, high-temperature synthesis. CBN does not quite reach the hardness of diamond, but is resistant to oxygen at high temperatures, for example.

The form dressing roller according to the invention with large diamond grain sizes in a freestanding diamond coating with an interrupted cut offers a long service life and leads to a grinding wheel with an increased effective roughness. Due to the freestanding diamond coating, it is possible to machine a wide variety of complex profiles in one dressing cycle. Due to the interrupted cut an increased effect roughness and profile is generated on the grinding wheel. The form dressing roller according to the invention produces an improved and more uniform workpiece quality and profile, and thus a higher process reliability.

Web-controlled form dresser rolls with large hard material sizes and closed coating produce high degrees of overlapping due to the coating widths, which leads to a low effect roughness and thus a more closed grinding wheel topography.

The recesses cause a pressure reduction between the Formabrichtrolle and the grinding wheel. The high pressure causes shape error and profile distortion on the grinding wheel. The recesses facilitate penetration of the single diamond grain of the pad of the form roller into the grinding wheel.

A preferred embodiment of the invention is a Formabrichtrolle having a lining ring of 3 to 12 recesses. The Abrichtung is an increased Wirkrautiefe reached the grinding wheel. The increased effect roughness leads to an improved grinding action of the grinding wheel.

A particularly preferred embodiment of the invention is a Formabrichtrolle having a lining ring of 4 to 6 and most preferably 5 recesses. With the number of said recesses on the lining ring of the Formabrichtrolle is achieved by the Abrichtung an increased Wirkrautiefe on the grinding wheel.

A preferred embodiment of the invention is a Formabrichtrolle, wherein the lining ring has a lining height of 10 mm to 20 mm and a usable document height of 4 mm to 6 mm. By specified lining height of the lining ring an improved profile accuracy is achieved at the grinding wheel.

A preferred embodiment of the invention is a form dressing roller, wherein the lining ring has a coating width of 0.4 mm to 2.0 mm and the coating width ≤ the diamond grain size and / or diamond rod size. By the specified covering width of the lining ring a better profile accuracy and roundness of the workpieces is achieved.

A preferred embodiment of the invention is a Formabrichtrolle, wherein the width of the recesses is 1 mm to 10 mm. The recesses in the form dressing roll cause better penetration of the form dressing roll diamond into the grinding wheel bond during the dressing process and thus a reduction in dressing forces. With the specified width of the recesses of the form dressing roller, a good result in the reduction of the dressing forces and in the increase of the Wirkrautiefe is achieved.

A preferred embodiment of the invention is a Formabrichtrolle, wherein the depth of the recesses corresponds to the exploitable depth of the covering. At the specified depth of the recesses of the Formabrichtrolle a good result in the reduction of Abrichtkräfte and increase the Wirkrautiefe is achieved on the grinding wheel.

A preferred embodiment of the invention is a Formabrichtrolle, wherein the diameter of the Formabrichtrolle is 80 mm to 250 mm. Form dressing rollers are very effective in increasing the profile accuracy and the life of the Formabrichtrolle at the indicated diameters.

A preferred embodiment of the invention is a Formabrichtrolle, wherein the diameter of the receiving bore is 8 mm to 120 mm. This area for the receiving bore has proven to be very effective for better running accuracy and easier installation of Formabrichtrolle.

A preferred embodiment of the invention is a Formabrichtrolle, wherein the pad ring consists of at least one layer, wherein in each layer individual diamond grains or diamond rods are arranged in a narrow classified size in a plane perpendicular to the axis of rotation of the Formabrichtrolle according to a predetermined setting scheme. In the case of multi-layered form-dressing rolls, the diamond grains of one layer lie in the gaps between the diamond grains of the other layer and partially protrude into the other layer, so that the peripheral geometry of the form-dressing roll remains approximately constant in wear progress. This embodiment of the invention, in particular the lining ring has proven to be very effective.

• Diamantkörner nach einem vorgegebenen Setzschema auf eine Unterlage mit Klebschicht zur Herstellung einer Schicht gesetzt werden,
• Bindungspulver zugegeben wird,
• die Schicht zum Belag kalt gepresst und gesintert wird und
• die Aussparungen aus dem Belag ausgeschnitten werden.

A further solution of the object of the invention is a method for producing the Formabrichtrolle invention, wherein

• Diamond grains are placed according to a predetermined setting scheme on a substrate with adhesive layer to produce a layer,
• Binding powder is added,
• the coating is cold pressed and sintered to the coating and
• the recesses are cut out of the covering.

In the form dressing roll produced by the method according to the invention, the coating width is ≤ the diamond grain size and / or the diamond bar width. The produced covering ring is ground with the diamond grains.

• Diamantkörner nach einem vorgegebenen Setzschema auf eine Unterlage mit Klebschicht zur Herstellung einer Schicht gesetzt werden, wobei die Aussparungen im Belag geformt werden,
• Bindungspulver zugegeben wird und
• die Schicht zum Belag kalt gepresst und gesintert wird.

A further solution of the object of the invention is a method for producing the Formabrichtrolle invention, wherein

• Diamond grains are placed according to a predetermined setting scheme on a substrate with adhesive layer to produce a layer, wherein the recesses are formed in the lining,
• Binding powder is added and
• the coating is cold pressed and sintered to the coating.

In the form dressing roll produced by the method according to the invention, the coating width is ≤ the diamond grain size and / or the diamond bar width. The produced covering ring is ground with the diamond grains.

A preferred embodiment of the invention is a method for producing the Formabrichtrolle invention, wherein desired layers are stacked under relative displacement and / or rotation of the layers and the layer package are pressed cold to the coating and sintered.

A preferred embodiment of the invention is a method for producing the Formabrichtrolle invention, wherein the produced Formabrichtrolle is then ground and finished.

• ein zweiteiliger Grundkörper wird vorgedreht,
• ein Diamantbelagring wird hergestellt,
• ein Diamantbelagring wird im Grundkörper montiert,
• die komplette Diamond Dressing System(DDS)-Formabrichtrolle wird auf Profil- und Laufgenauigkeit endbearbeitet, gewuchtet, poliert und graviert.

The process according to the invention for the production of the form dressing roll can be summarized as follows:

• a two-part body is pre-rotated,
• a diamond pad ring is made,
• a diamond lining ring is mounted in the body,
• The complete Diamond Dressing System (DDS) form dressing roll is finished, balanced, polished and engraved for profile and running accuracy.

With the form dressing roller according to the invention results in a freestanding diamond coating whose coating width ≤ the used diamond grain size and / or diamond bar width, the grain size is chosen so that at the edges of Belankings natural radii arise that generate themselves and the smallest predetermined concave radius at the Corresponding grinding wheel.

As a binding for a form dressing roll according to the invention, it is preferable to use a high tungsten content galvanic or sintered bond. The grit size is ≦ 1.5 mm, and the usable height of the diamond coating in the feed direction is preferably between 5 mm and 10 mm.

Another object of the invention is that the form dressing roll is used to dress diamond and CBN grinding wheels in ceramic, bakelitic, metallic bonding or resin bonding, as well as conventional grinding wheels with corundum or silicon carbide abrasives.

Fig. 1

eine Draufsicht auf die Vorderseite der Formabrichtrolle;

Fig. 2

eine Draufsicht auf die Rückseite der Formabrichtrolle;

Fig. 3

einen vergrößerten Ausschnitt Y des Belags mit einer Aussparung nach Fig. 1 und Fig. 2;

Fig. 4

einen Querschnitt durch die Formabrichtrolle;

Fig. 5

einen vergrößerten Ausschnitt Z des Querschnitts nach Fig. 4;

Fig. 6

eine graphische Darstellung der Wirkrautiefe der Werkstücke nach dem Abrichten, beim Einsatz einer herkömmlichen Formabrichtrolle DDS ohne Aussparungen im Vergleich zu einer erfindungsgemäßen Formabrichtrolle DDS-Cut mit Aussparungen;

Fig. 7

eine graphische Darstellung der Oberflächenrauigkeit der Werkstücke nach dem Abrichten, beim Einsatz einer herkömmlichen Formabrichtrolle DDS ohne Aussparungen im Vergleich zu einer erfindungsgemäßen Formabrichtrolle DDS-Cut mit Aussparungen;

Fig. 8

eine graphische Darstellung der Rundheit der Werkstücke nach dem Abrichten, beim Einsatz einer herkömmlichen Formabrichtrolle DDS ohne Aussparungen im Vergleich zu einer erfindungsgemäßen Formabrichtrolle DDS Cut mit Aussparungen;

The invention will be explained in more detail with reference to a drawing. It shows:

Fig. 1

a plan view of the front of the Formabrichtrolle;

Fig. 2

a plan view of the back of the Formabrichtrolle;

Fig. 3

an enlarged section Y of the lining with a recess after Fig. 1 and Fig. 2 ;

Fig. 4

a cross section through the Formabrichtrolle;

Fig. 5

an enlarged section Z of the cross section after Fig. 4 ;

Fig. 6

a graphic representation of the Wirkrautiefe of the workpieces after dressing, when using a conventional Formabrichtrolle DDS without recesses compared to a form dressing roller DDS-cut according to the invention with recesses;

Fig. 7

a graphic representation of the surface roughness of the workpieces after dressing, when using a conventional Formabrichtrolle DDS without recesses compared to a form-dressing roller DDS-cut according to the invention with recesses;

Fig. 8

a graphic representation of the roundness of the workpieces after dressing, when using a conventional Formabrichtrolle DDS without recesses compared to a form-dressing roller according to the invention DDS Cut with recesses;

The Fig. 1 shows a front view of a Formabrichtrolle 10 for dressing not shown diamond and CBN grinding wheels in ceramic, bakelitischer or synthetic resin bond and / or metallic bond and conventional grinding wheels with abrasives of corundum or silicon carbide. The form dressing roller 10 is an example of a Diamond Dressing System (DDS). The Formabrichtrolle 10 allows the dressing of ceramic bonded diamond and boron nitride grinding wheels in high precision. The Formabrichtrolle 10 includes a set single-layer diamond backing 2, which is clamped in a two-piece steel base consisting of a support body 1 and a clamping ring 6. The pad 2 consists of individual diamond grains, which have approximately the same size. The diamond grains lie on rays which pass through a common center of the form dressing roll 10. The diamonds are incorporated into a matrix which consists of a suitable binder, for example a galvanic or a sintered bond with a high tungsten content. The pad ring 2 shows in Fig. 1 five recesses 3. In Fig. 1 the receiving bore 5 and the clamping screws 4 are shown.

The Fig. 2 shows a plan view of the back of Formabrichtrolle 10. In this case, the inner edge 6A and outer edge 6B of the clamping ring 6 are visible.

The Fig. 3 shows an enlarged section Y of the pad 2 with a recess 3 after Fig. 1 and Fig. 2 , The recess 3 has a width of 5 mm and a depth of 5 mm at a lining height of 5 mm. The recess 3 can be cut out or introduced during the molding process.

The Fig. 4 shows a cross section through the Formabrichtrolle 10 and Fig. 5 shows an enlarged section Z of the cross section after Fig. 4 In the region of the clamping ring 6 and the lining ring 2. It is good to see that the carrier body 1 and the clamping ring 6 with the clamping screws 4 are held together. Both the carrier body 1 and the clamping ring 6 are usually made of stainless steel. The clamping ring 6 is inserted with the inner edge 6 A in the carrier body 1 accurately. The lining ring 2 is placed on the carrier body 1. The lining ring 2 is clamped between the carrier body 1 and the clamping ring 6. The outer edge 6B of the clamping ring 6 is flush with the outer edge 6B of the carrier body 1. The usable height of the lining ring 2 is 5 mm.

Examples

The Fig. 6 shows a graphical representation of the Wirkrautiefe a ceramic CBN (cubic crystalline boron nitride) grinding wheel after dressing. During the grinding process, the restoration of concentricity, the geometrical shape and the optimal effective roughness of the grinding wheel play an important role. Shown is the effective roughness R _ts [μm] of a dressed grinding wheel. For this purpose, a grinding wheel was dressed with a form dressing roller (DDS CUT) according to the invention and a second grinding wheel with a conventional form dressing roller (DDS). It could be shown that with the form dressing roller according to the invention, a kneading depth at the grinding wheel of 3.5 μm was achieved. With the conventional Formabrichtrolle a Wirkrautiefe was achieved at the dressed grinding wheel of only 1.8 microns. The Wirkrautiefe, the dressed with the Formabrichtrolle invention grinding wheel is higher than with the normal dressing roller. This suggests a more abrasive grinding topography. This result was surprising and unexpected.

The Fig. 7 shows a graphical representation of the surface roughness of a grinding wheel after dressing. In the grinding process, restoring the desired surface roughness of the workpieces plays an important role. The surface roughness Ra [μm] of ground workpieces is shown. For this purpose, grinding wheels were dressed with a form dressing roller (DDS CUT) according to the invention and with a conventional form dressing roller (DDS). It could be shown: By dressing with the form dressing roller DDS CUT according to the invention a slightly higher surface roughness of 0.23 microns was achieved in the workpieces as in the conventional Formabrichtrolle DDS of 0.22 microns.
With the form dressing roller DDS CUT according to the invention, a somewhat lower surface roughness of 0.25 μm was achieved with 400 workpieces than with the conventional form dressing roller DDS of 0.32 μm. The surface roughness was slightly higher with the conventional DDS form roller, but with the conventional form dressing roller, only 400 workpieces having a given surface roughness could be ground. Therefore, with the conventional form roller DDS could only one Dressing cycle of 400 workpieces can be achieved.
With the form dressing roller DDS CUT according to the invention, a surface roughness of 0.26 was achieved for 600 workpieces and 0.25 μm for 800 workpieces. The surface roughness was almost constant over the 800 workpieces. The performance was doubled with the form dressing roller (DDS CUT) according to the invention. It was achieved a much better constant in the surface roughness of the ground workpieces. This result was surprising and unexpected.

• Mit der erfindungsgemäßen Formabrichtrolle DDS CUT wurde bei den geschliffenen Werkstücken eine niedrigere Rundheit von 1,2 µm als bei der herkömmlichen Formabrichtrolle DDS von 2,8 µm erzielt.

Mit der erfindungsgemäßen Formabrichtrolle DDS CUT wurde bei 400 Werkstücken eine niedrigere Rundheit von 1,3 µm als bei der herkömmlichen Formabrichtrolle DDS von 2,7 µm erzielt. Die Rundheitsfehler waren mit der herkömmlichen Formabrichtrolle höher. Mit der herkömmlichen Formabrichtrolle DDS konnten nur 400 Werkstücke mit der geforderten Genauigkeit geschliffen werden. Mit der erfindungsgemäßen Formabrichtrolle DDS CUT wurde bei 600 Werkstücken eine Rundheit von 1,3 µm und bei 800 Werkstücken von 1,2 µm erzielt. Die Rundheit war über die 800 geschliffenen Werkstücke nahezu konstant. Die Leistung wurde mit der erfindungsgemäßen Formabrichtrolle (DDS CUT) verdoppelt. Es wurde eine wesentlich bessere Konstante bei der Rundheit der geschliffenen Werkstücke erzielt. Die Ergebnisse der Rundheiten zeigen, dass mit der erfindungsgemäßen Formabrichtrolle (DDS CUT) über den gesamten Abrichtzyklus konstante Rundheitswerte erreicht werden. Die mit der herkömmlichen Formabrichtrolle DDS abgerichteten Schleifscheiben mussten bereits nach 400 Werkstücken nochmals abgerichtet werden, da die Oberflächenrauhigkeit sowie die Rundheit außerhalb der Werkstücktoleranz lagen. Dieses Ergebnis war überraschend und unerwartet. Fig. 8 shows a graphical representation of the roundness of the workpieces after dressing the grinding wheel. Roundness is a measure of the accuracy with which an ideal round shape (circular shape) is achieved. It results in a better roundness profile, therefore less form deviations arise. During the grinding process the optimal roundness of the workpieces plays an important role. The roundness in [μm] of the work pieces is shown. For this purpose, grinding wheels were dressed with a form dressing roller (DDS CUT) according to the invention and with a conventional form dressing roller (DDS). It could be shown:

• With the form dressing roller DDS CUT according to the invention, a lower roundness of 1.2 μm was achieved in the ground workpieces than in the conventional form dressing roller DDS of 2.8 μm.

With the form dressing roller DDS CUT according to the invention, a lower roundness of 1.3 μm was achieved for 400 workpieces than for the conventional form dressing roller DDS of 2.7 μm. The roundness errors were higher with the conventional form dressing roll. With the conventional form dressing roller DDS, only 400 workpieces could be ground to the required accuracy. With the form dressing roller DDS CUT according to the invention, roundness of 1.3 μm was achieved for 600 workpieces and 1.2 μm for 800 workpieces. The roundness was almost constant over the 800 ground workpieces. The performance was doubled with the form dressing roller (DDS CUT) according to the invention. It was achieved a much better constant in the roundness of the ground workpieces. The results of the roundnesses show that consistent roundness values are achieved over the entire dressing cycle with the form dressing roll (DDS CUT) according to the invention. The grinding wheels dressed with the conventional form dressing roller DDS had to be re-dressed after only 400 workpieces because the surface roughness and the roundness were outside the workpiece tolerance. This result was surprising and unexpected.

Reference sign:

10

Form dressing roll

1

support body

2

Covering ring / rubber / diamond backing

3

recesses

4

clamping screws

5

location hole

6

clamping ring

6A

Inner edge of the clamping ring

6B

Outer edge of the clamping ring

Y

Magnification to Fig. 1 and Fig. 2 / enlarged section Y

Z

Magnification to Fig. 4 / enlarged detail Z

Claims (15)

1. Form dressing roller (10) having

   - a carrier body (1),
   a freestanding cover ring (2) containing diamond grains and/or diamond rods in ceramic, metallic, or resin bond for dressing grinding wheels,

   - clamping screws (4) that clamp the cover ring (2) between the carrier body (1) and a clamping ring (6), and

   - a receiving hole (5) in the center of the carrier body (1),

   characterized in that the cover ring (2) has at least 3 recesses (3).
2. Form dressing roller (10) according to claim 1, wherein the cover ring (2) has 3 to 12 recesses (3).
3. Form dressing roller (10) according to claim 1 or 2, wherein the cover ring (2) has 4 to 6 recesses (3).
4. Form dressing roller (10) according to one of claims 1 through 3, wherein the cover ring (2) has a cover height of 10 mm to 20 mm and a usable cover height of 4 mm to 6 mm.
5. Form dressing roller (10) according to one of claims 1 through 4, wherein the cover ring (2) has a cover width of 0.4 mm to 2.0 mm and wherein the cover width is ≤ the diamond grain size and/or the diamond rod size.
6. Form dressing roller (10) according to one of claims 1 through 5, wherein the width of the recesses (3) is 1 mm to 10 mm.
7. Form dressing roller (10) according to one of claims 1 through 6, wherein the depth of the recesses (3) corresponds to the usable cover height.
8. Form dressing roller (10) according to one of claims 1 through 7, wherein the diameter of the form dressing roller (10) is 80 mm to 250 mm.
9. Form dressing roller (10) according to one of claims 1 through 8, wherein the diameter of the receiving hole (5) is 8 mm to 120 mm.
10. Form dressing roller (10) according to one of claims 1 through 9, wherein the cover ring (2) consists of at least one layer, wherein, in each layer, closely-sized individual diamond grains are arranged in a plane perpendicular to the axis of rotation of the form dressing roller (10) according to a predefined setting pattern and wherein in the case of form dressing rollers having more than one layer, the diamond grains of one layer lie in gaps between the diamond grains of the other layer and partially project into the other layer such that the circumferential surface geometry of the dressing roller (10) remains virtually constant as wear progresses.
11. Method for producing the form dressing roller (10) according to one of claims 1 through 10, wherein

    - diamond grains are set according to a predefined setting pattern on a base with an adhesive layer for producing a layer,

    - bonding powder is added,

    - the layer is cold pressed and sintered to form the cover (2), and

    - the recesses (3) are cut out of the cover (2).
12. Method for producing the form dressing roller (10) according to one of claims 1 through 10, wherein

    - diamond grains are set according to a predefined setting pattern on a base with an adhesive layer for producing a layer, wherein the recesses (3) are formed in the cover (2)

    - bonding powder is added, and

    - the layer is cold pressed and sintered to form the cover (2).
13. Method according to claim 11 or 12, wherein desired layers are stacked with relative displacement and/or rotation of the layers and the layer stack is cold pressed and sintered to form the cover (2).
14. Method according to one of claims 11 through 13, wherein the form dressing roller (10) produced is subsequently ground and finished.
15. Use of the form dressing roller (10) according to one of claims 1 through 10 for dressing diamond and CBN grinding wheels in ceramic, Bakelite, metallic, or resin bond as well as grinding wheels with abrasives made of corundum or silicon carbide.

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