EP0430207A1 - Contact roller for belt grinding machine - Google Patents

Contact roller for belt grinding machine Download PDF

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Publication number
EP0430207A1
EP0430207A1 EP90122747A EP90122747A EP0430207A1 EP 0430207 A1 EP0430207 A1 EP 0430207A1 EP 90122747 A EP90122747 A EP 90122747A EP 90122747 A EP90122747 A EP 90122747A EP 0430207 A1 EP0430207 A1 EP 0430207A1
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EP
European Patent Office
Prior art keywords
contact roller
rings
intermediate layer
roller according
steel
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Granted
Application number
EP90122747A
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German (de)
French (fr)
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EP0430207B1 (en
Inventor
Rainer Grau
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Hans Weber Maschinenfabrik GmbH
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Hans Weber Maschinenfabrik GmbH
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Publication of EP0430207A1 publication Critical patent/EP0430207A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/12—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving a contact wheel or roller pressing the belt against the work
    • B24B21/14—Contact wheels; Contact rollers; Belt supporting rolls

Definitions

  • the invention relates to a contact roller for belt grinding machines with a steel core and a jacket surrounding the latter, comprising an intermediate layer of elastically flexible material that at least partially covers the steel core and a plurality of outer elements made of a hard material that are arranged on the outer surface of the intermediate layer and are intended for contact with the grinding belt .
  • a contact roller is known from German utility model 1 953 917, in which the steel core is surrounded by a rubber jacket.
  • This rubber jacket can be armored or provided with a different profile.
  • the rubber jacket can also consist of layers of different Shore hardness.
  • rollers that have a steel jacket.
  • rollers with a relatively soft surface have a high tolerance for workpiece unevenness, but that they only permit a small amount of removal, since the sanding belt does not have the required Force can be pressed onto the workpiece.
  • Such rollers are therefore not suitable for achieving high cutting performance on metallic workpieces.
  • rollers with a hard surface for example a steel jacket, enable high stock removal per unit of time.
  • they do not allow tolerance compensation for workpieces that are not completely flat.
  • the invention has for its object to provide a contact roller of the type mentioned, which on the one hand enables high cutting performance and on the other hand tolerance compensation for uneven workpieces.
  • the elements made of the hard material are formed by closed rings which enclose the elastic intermediate layer and by ring grooves are axially separated from each other.
  • the rings In the unloaded state, the rings form a smooth, hard cylindrical surface interrupted by grooves, which enables high removal per unit of time and is therefore particularly suitable for grinding metallic workpieces.
  • the rings can deflect in the radial direction due to the elastic intermediate layer in the event of local unevenness or even a distortion of the workpiece, i.e. move radially relative to each other. This enables a tolerance compensation without reducing the grinding performance. This tolerance compensation is also possible without, for example, grinding or chamfering the edges of the workpieces, as is the case with contact rollers with a soft surface. Because the rings move radially as a whole, there is no imbalance when the contact roller rotates.
  • the rings are expediently made of steel.
  • the grooves between the rings are used to cool the grinding belt.
  • the groove width and the width of the rings are dimensioned and the ring segments themselves are shaped such that - viewed over a circumferential line of the contact roller - the rings overlap several times.
  • the annular grooves are continuously curved in such a way that they intersect an axis-normal central plane four times.
  • the edges of the rings can follow the contour of a cutting line which results from a cut of each ring with a cylinder, the diameter of which compared to the ring diameter is large and its axis is perpendicular to the ring axis. This design of the rings ensures that the ring segments have no imbalance in themselves, even though their edges are not in a plane normal to the axis. This prevents the rings from tumbling.
  • the intermediate layer can consist of natural or synthetic rubber, the Shore hardness of this intermediate layer being able to vary to a relatively large extent.
  • the intermediate layer does not consist of a compact cylinder, but instead of a plurality of ribs which are spaced apart and parallel to one another.
  • the ribs are preferably oriented axially parallel. This formation of the intermediate layer facilitates the assembly of the rings on the intermediate layer.
  • the contact roller according to the invention combines the advantages of the previous different types of contact rollers.
  • the contact roller according to the invention adapts to unevenness in the workpiece surface, thus enabling tolerance compensation. Tolerance fluctuations due to different workpiece thicknesses are compensated for without readjusting the roller.
  • a high chip removal is achieved while maintaining the above-mentioned advantages, since the abrasive grain lies against the steel jacket and cannot be pressed back into the rubber jacket like with a rubber roller.
  • the heating of the grinding material is less, so that it warps less.
  • the workpiece edges are also not accidentally ground round or at an angle.
  • the steel rings can in turn be coated on their outer peripheral surface, e.g. with a rubber layer.
  • the contact roller for a belt grinding machine shown in FIG. 1 comprises a shaft or a core 10, which is surrounded by an intermediate layer 12 or segments made of rubber or a similar elastic material. This in turn is enclosed by a plurality of ring segments 14, which are arranged axially next to one another, each separated by ring grooves 16.
  • the ring segments 14 are preferably made of steel. Their circumferential surfaces aligned with one another form a cylindrical outer surface interrupted by the annular grooves 16.
  • the ring segments 14 Due to the arrangement of the ring segments 14 on the elastic intermediate layer 12, the ring segments 14 can shift in the radial direction in the direction of the double arrow A in FIG. 1.
  • the shape of the ring segments 14 or the grooves remaining between them, which are used to cool the grinding belt, are shaped such that they are completely symmetrical with respect to the axis of rotation 18 of the contact roller. This can be seen in particular from FIG. 2.
  • the cutting plane of Figure 2 runs exactly through the axis-normal center of a groove 16, i.e. in the middle between two axially normal planes 20 and 22 that delimit the groove.
  • Each ground point on the circumference of a ring segment corresponds to a diametrically opposite, similar ground point, so that the ring segments 14 are completely balanced. They do not wobble around the axis of the contact roller.
  • the groove intersects the central plane, ie the sectional plane of FIG. 2, viewed four times over one revolution.
  • the ring segments adjacent to this groove overlap in the circumferential direction, as is due to the different Hatching is indicated in Figure 2. This prevents the grooves 16 from forming on the workpiece surface during the grinding process.
  • FIG. 5 shows a modified embodiment of the contact roller according to the invention, wherein the intermediate layer does not consist of a closed cylindrical layer, but is formed by four ribs 12 ′ which are arranged on the core 10 with the same spacing from one another.
  • the material of the ribs 12 ′ corresponds to the material of the intermediate layer 12 in the embodiment according to FIGS. 1 to 4.
  • All other elements of the contact roller according to FIG. 5 correspond to those of the embodiment according to FIGS. 1 to 4.
  • the solution shown in Figure 5 has the advantage that the rings or ring segments 14 can be assembled more easily.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

Die Erfindung betrifft eine Kontaktwalze für Bandschleifmaschinen mit einem Stahlkern (10) und einem diesen umgebenden Mantel. Der Mantel umfaßt eine den Stahlkern (10) mindestens teilweise bedeckende Zwischenschicht (12) aus elastisch nachgiebigem Material und geschlossene Ringe (14) aus einem harten Material, welche die elastische Zwischenschicht (12) umschließen und durch Ringnuten (16) voneinander getrennt axial nebeneinander angeordnet sind. <IMAGE>The invention relates to a contact roller for belt grinding machines with a steel core (10) and a jacket surrounding it. The jacket comprises an intermediate layer (12) made of elastically resilient material and at least partially covering the steel core (10) and closed rings (14) made of a hard material, which enclose the elastic intermediate layer (12) and are arranged axially next to one another by annular grooves (16) are. <IMAGE>

Description

Die Erfindung betrifft eine Kontaktwalze für Band­schleifmaschinen mit einem Stahlkern und einem diesen umgebenden Mantel umfassend eine den Stahlkern minde­stens teilweise bedeckende Zwischenschicht aus ela­stisch nachgiebigem Material und eine Vielzahl von an der Außenoberfläche der Zwischenschicht angeordneten und zur Anlage an dem Schleifband bestimmten äußeren Elementen aus einem harten Material.The invention relates to a contact roller for belt grinding machines with a steel core and a jacket surrounding the latter, comprising an intermediate layer of elastically flexible material that at least partially covers the steel core and a plurality of outer elements made of a hard material that are arranged on the outer surface of the intermediate layer and are intended for contact with the grinding belt .

Aus dem deutschen Gebrauchsmuster 1 953 917 ist eine Kontaktwalze bekannt, bei der der Stahlkern von einem Gummimantel umgeben ist. Dieser Gummimantel kann ar­miert oder mit einem unterschiedlichen Profil versehen sein. Der Gummimantel kann auch aus Schichten unter­schiedlicher Shore-Härte bestehen.A contact roller is known from German utility model 1 953 917, in which the steel core is surrounded by a rubber jacket. This rubber jacket can be armored or provided with a different profile. The rubber jacket can also consist of layers of different Shore hardness.

Auf der anderen Seite gibt es Kontaktwalzen, die einen Stahlmantel haben. Ganz allgemein ist zu den aus dem Stand der Technik bekannten Kontaktwalzen festzustel­len, daß Walzen mit einer relativ weichen Oberfläche eine hohe Toleranz gegenüber Werkstückunebenheiten be­sitzen, daß sie aber nur einen geringen Abtrag ermögli­chen, da das Schleifband nicht mit der erforderlichen Kraft an das Werkstück angedrückt werden kann. Derarti­ge Walzen sind daher zum Erreichen hoher Zerspanlei­stungen an metallischen Werkstücken nicht geeignet. Im Gegensatz dazu ermöglichen Walzen mit einer harten Oberfläche, also beispielsweise einem Stahlmantel, einen hohen Abtrag pro Zeiteinheit. Sie ermöglichen je­doch keinen Toleranzausgleich bei nicht vollständig ebenen Werkstücken.On the other hand, there are contact rollers that have a steel jacket. In general, it can be stated in relation to the contact rollers known from the prior art that rollers with a relatively soft surface have a high tolerance for workpiece unevenness, but that they only permit a small amount of removal, since the sanding belt does not have the required Force can be pressed onto the workpiece. Such rollers are therefore not suitable for achieving high cutting performance on metallic workpieces. In contrast to this, rollers with a hard surface, for example a steel jacket, enable high stock removal per unit of time. However, they do not allow tolerance compensation for workpieces that are not completely flat.

Zur Lösung dieses Problems wurde in der US-Patent­schrift 21 62 279 bereits eine Andruckwalze der ein­gangs genannten Art vorgeschlagen, bei der die aus dem harten Material bestehenden äußeren Elemente von Blöcken aus Hartgummi, Kork oder Stahl gebildet sind, die an der geschlossenen, aus weichem Gummi bestehenden Zwischenschicht befestigt sind und unabhängig voneinan­der bewegt werden können. Diese Andruckwalze ermöglicht einen Toleranzausgleich bei unebenen Werkstücken. Nach­teilig an dieser Lösung ist jedoch, daß aufgrund der unabhängigen Beweglichkeit dieser blockartigen Elemente einerseits Unwuchten auftreten können und andererseits die Elemente beim Versuch, hohe Zerspanleistungen zu erreichen, starken Scherkräften ausgesetzt sind. Diese können dazu führen, daß die Elemente von der Zwischen­schicht abreißen.To solve this problem, a pressure roller of the type mentioned above has already been proposed in US Pat. No. 2,162,279, in which the outer elements made of the hard material are formed from blocks of hard rubber, cork or steel, which are attached to the closed, from soft Rubber existing intermediate layer are attached and can be moved independently. This pressure roller enables tolerance compensation for uneven workpieces. A disadvantage of this solution, however, is that, due to the independent mobility of these block-like elements, imbalances can occur on the one hand and on the other hand the elements are exposed to strong shear forces when trying to achieve high cutting performance. These can cause the elements to tear off the intermediate layer.

Der Erfindung liegt die Aufgabe zugrunde, eine Kontakt­walze der eingangs genannten Art anzugeben, die einer­seits eine hohe Zerspanleistung und andererseits einen Toleranzausgleich bei unebenen Werkstücken ermöglicht.The invention has for its object to provide a contact roller of the type mentioned, which on the one hand enables high cutting performance and on the other hand tolerance compensation for uneven workpieces.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die aus dem harten Material bestehenden Elemente von geschlossenen Ringen gebildet sind, welche die elasti­sche Zwischenschicht umschließen und durch Ringnuten voneinander getrennt axial nebeneinander angeordnet sind.This object is achieved in that the elements made of the hard material are formed by closed rings which enclose the elastic intermediate layer and by ring grooves are axially separated from each other.

Im unbelasteten Zustand bilden die Ringe eine von Nuten unterbrochene glatte harte zylindrische Oberfläche, die einen hohen Abtrag pro Zeiteinheit ermöglicht und daher insbesondere für das Schleifen von metallischen Werk­stücken geeignet ist. Auf der anderen Seite können bei lokalen Unebenheiten oder auch bei einem Verzug des Werkstückes die Ringe aufgrund der elastischen Zwi­schenschicht in radialer Richtung ausweichen, d.h. sich radial relativ zueinander verschieben. Dies ermöglicht einen Toleranzausgleich, ohne daß dabei die Schleiflei­stung nachläßt. Dieser Toleranzausgleich ist auch mög­lich, ohne daß dabei zum Beispiel Kanten der Werkstücke rundgeschliffen oder abgeschrägt werden, wie dies bei Kontaktwalzen mit einer weichen Manteloberfläche der Fall ist. Dadurch, daß sich die Ringe als Ganzes radial verschieben, tritt auch keine Unwucht beim Umlaufen der Kontaktwalze auf.In the unloaded state, the rings form a smooth, hard cylindrical surface interrupted by grooves, which enables high removal per unit of time and is therefore particularly suitable for grinding metallic workpieces. On the other hand, the rings can deflect in the radial direction due to the elastic intermediate layer in the event of local unevenness or even a distortion of the workpiece, i.e. move radially relative to each other. This enables a tolerance compensation without reducing the grinding performance. This tolerance compensation is also possible without, for example, grinding or chamfering the edges of the workpieces, as is the case with contact rollers with a soft surface. Because the rings move radially as a whole, there is no imbalance when the contact roller rotates.

Zweckmäßigerweise bestehen die Ringe aus Stahl. Die Nuten zwischen den Ringen dienen der Kühlung des Schleifbandes. Um ein Abzeichnen dieser Ringnuten auf der geschliffenen Werkstückoberfläche zu vermeiden, sind die Nutbreite und die Breite der Ringe so bemessen und die Ringsegmente selber so geformt, daß - über eine Umfangslinie der Kontaktwalze betrachtet - sich die Ringe mehrfach überlappen. Bei einer bevorzugten Aus­führungsform sind dabei die Ringnuten derart kontinu­ierlich gekrümmt, daß sie eine achsnormale Mittelebene viermal schneiden. Beispielsweise können die Ränder der Ringe der Kontur einer Schnittlinie folgen, die sich aus einem Schnitt jedes Ringes mit einem Zylinder er­gibt, dessen Durchmesser gegenüber dem Ringdurchmesser groß ist und dessen Achse senkrecht zur Ringachse ge­richtet ist. Durch diese Gestaltung der Ringe wird er­reicht, daß die Ringsegmente in sich keinerlei Unwucht besitzen, obwohl ihre Ränder nicht in einer achs­normalen Ebene liegen. Ein Taumeln der Ringe wird da­durch vermieden.The rings are expediently made of steel. The grooves between the rings are used to cool the grinding belt. In order to prevent these ring grooves from being marked on the ground workpiece surface, the groove width and the width of the rings are dimensioned and the ring segments themselves are shaped such that - viewed over a circumferential line of the contact roller - the rings overlap several times. In a preferred embodiment, the annular grooves are continuously curved in such a way that they intersect an axis-normal central plane four times. For example, the edges of the rings can follow the contour of a cutting line which results from a cut of each ring with a cylinder, the diameter of which compared to the ring diameter is large and its axis is perpendicular to the ring axis. This design of the rings ensures that the ring segments have no imbalance in themselves, even though their edges are not in a plane normal to the axis. This prevents the rings from tumbling.

Die Zwischenschicht kann aus natürlichem oder syntheti­schem Kautschuk bestehen, wobei die Shore-Härte dieser Zwischenschicht in relativ weitem Umfange variieren kann.The intermediate layer can consist of natural or synthetic rubber, the Shore hardness of this intermediate layer being able to vary to a relatively large extent.

Gemäß einer bevorzugten Ausführungsform besteht die Zwischenschicht nicht aus einem kompakten Zylinder, sondern aus einer Mehrzahl von Rippen, die mit Abstän­den voneinander und parallel zueinander angeordnet sind. Vorzugsweise sind die Rippen dabei achsparallel gerichtet. Diese Ausbildung der Zwischenschicht er­leichtert die Montage der Ringe auf der Zwischen­schicht.According to a preferred embodiment, the intermediate layer does not consist of a compact cylinder, but instead of a plurality of ribs which are spaced apart and parallel to one another. The ribs are preferably oriented axially parallel. This formation of the intermediate layer facilitates the assembly of the rings on the intermediate layer.

Die erfindungsgemäße Kontaktwalze vereinigt in sich die Vorteile der bisherigen verschiedenen Typen von Kon­taktwalzen. Die erfindungsgemäße Kontaktwalze paßt sich Unebenheiten der Werkstückoberfläche an, ermöglicht also einen Toleranzausgleich. Toleranzschwankungen auf­grund unterschiedlicher Werkstückstärken werden ohne Nachstellen der Walze ausgeglichen.The contact roller according to the invention combines the advantages of the previous different types of contact rollers. The contact roller according to the invention adapts to unevenness in the workpiece surface, thus enabling tolerance compensation. Tolerance fluctuations due to different workpiece thicknesses are compensated for without readjusting the roller.

Aufgrund der glatten harten Oberfläche der Kontaktwalze können Beschädigungen der Werkstückoberfläche (ausgenommen die zu schleifenden Bereiche) vermieden werden. Ferner wird die Gefahr einer Schleifbandbeschä­digung durch scharfe oder abstehende Werkstückkanten herabgesetzt, da das Schleifband an der harten ebenen Oberfläche der jeweiligen Ringe anliegt und dadurch gut abgestützt wird. Scharfe oder abstehende Werkstückkan­ten können somit nicht in das Schleifband eindringen.Due to the smooth, hard surface of the contact roller, damage to the workpiece surface (except for the areas to be ground) can be avoided. Furthermore, the risk of damage to the grinding belt due to sharp or protruding workpiece edges is reduced, since the grinding belt lies against the hard, flat surface of the respective rings and is therefore good is supported. This means that sharp or protruding workpiece edges cannot penetrate the sanding belt.

Unter Beibehaltung der oben genannten Vorteile wird eine hohe Spanabnahme erzielt, da das Schleifkorn am Stahlmantel anliegt und nicht wie bei einer Gummiwalze zurück in den Gummimantel gedrückt werden kann. Die Er­wärmung des Schleifgutes ist geringer, so daß es sich auch weniger verzieht. Auch werden die Werkstückkanten nicht unbeabsichtigt rund oder schräg geschliffen.A high chip removal is achieved while maintaining the above-mentioned advantages, since the abrasive grain lies against the steel jacket and cannot be pressed back into the rubber jacket like with a rubber roller. The heating of the grinding material is less, so that it warps less. The workpiece edges are also not accidentally ground round or at an angle.

Die Stahlringe können auf ihrer Außenumfangsfläche wie­derum beschichtet sein, z.B. mit einer Gummilage.The steel rings can in turn be coated on their outer peripheral surface, e.g. with a rubber layer.

Die folgende Beschreibung erläutert in Verbindung mit den beigefügten Zeichnungen die Erfindung anhand von Ausführungsbeispielen. Es zeigen:

Fig. 1
eine Seitenansicht der erfindungsgemäßen Kontaktwalze,
Fig. 2
einen Schnitt senkrecht zur Walzenachse ent­lang Linie II-II,
Fig. 3
einen achsnormalen Schnitt entlang Linie III-III in Figur 1,
Fig. 4
einen die Achse enthaltenden Schnitt durch die erfindungsgemäße Kontaktwalze und
Fig. 5
einen der Fig. 3 entsprechenden Schnitt durch eine abgewandelte Ausführungsform der Erfindung.
The following description in conjunction with the accompanying drawings explains the invention using exemplary embodiments. Show it:
Fig. 1
a side view of the contact roller according to the invention,
Fig. 2
a section perpendicular to the roller axis along line II-II,
Fig. 3
2 shows an axis-normal section along line III-III in FIG. 1,
Fig. 4
a section containing the axis through the contact roller according to the invention and
Fig. 5
3 corresponding section through a modified embodiment of the invention.

Die in der Figur 1 dargestellte Kontaktwalze für eine Bandschleifmaschine umfaßt eine Welle oder einen Kern 10, der von einer Zwischenschicht 12 oder Segmenten aus Gummi oder einem ähnlichen elastischen Material umgeben ist. Dieser wiederum ist von einer Vielzahl von Ring­segmenten 14 umschlossen, die jeweils durch Ringnuten 16 voneinander getrennt axial nebeneinander angeordnet sind. Die Ringsegmente 14 bestehen vorzugsweise aus Stahl. Ihre miteinander fluchtenden Umfangsflächen bil­den eine durch die Ringnuten 16 unterbrochene zylindri­sche Mantelfläche.The contact roller for a belt grinding machine shown in FIG. 1 comprises a shaft or a core 10, which is surrounded by an intermediate layer 12 or segments made of rubber or a similar elastic material. This in turn is enclosed by a plurality of ring segments 14, which are arranged axially next to one another, each separated by ring grooves 16. The ring segments 14 are preferably made of steel. Their circumferential surfaces aligned with one another form a cylindrical outer surface interrupted by the annular grooves 16.

Aufgrund der Anordnung der Ringsegmente 14 auf der ela­stischen Zwischenschicht 12 können sich die Ringsegmen­te 14 in Richtung des Doppelpfeiles A in Figur 1 in ra­dialer Richtung gegeneinander verschieben.Due to the arrangement of the ring segments 14 on the elastic intermediate layer 12, the ring segments 14 can shift in the radial direction in the direction of the double arrow A in FIG. 1.

Die Form der Ringsegmente 14 bzw. der zwischen ihnen verbleibenden Nuten, die zum Kühlen des Schleifbandes dienen, sind so geformt, daß sie bezüglich der Drehach­se 18 der Kontaktwalze vollständig symmetrisch ausge­bildet sind. Man kann dies insbesondere aus Figur 2 er­sehen. Die Schnittebene der Figur 2 verläuft genau durch die achsnormale Mitte einer Nut 16, d.h. in der Mitte zwischen zwei die Nut begrenzenden achsnormalen Ebenen 20 und 22. Jedem Massepunkt am Umfang eines Ringsegmentes entspricht ein diametral gegenüberliegen­der gleichartiger Massepunkt, so daß die Ringsegmente 14 in sich vollständig ausgewuchtet sind. Sie taumeln nicht um die Achse der Kontaktwalze.The shape of the ring segments 14 or the grooves remaining between them, which are used to cool the grinding belt, are shaped such that they are completely symmetrical with respect to the axis of rotation 18 of the contact roller. This can be seen in particular from FIG. 2. The cutting plane of Figure 2 runs exactly through the axis-normal center of a groove 16, i.e. in the middle between two axially normal planes 20 and 22 that delimit the groove. Each ground point on the circumference of a ring segment corresponds to a diametrically opposite, similar ground point, so that the ring segments 14 are completely balanced. They do not wobble around the axis of the contact roller.

Ferner erkennt man in Figur 2, daß die Nut die Mittel­ebene, d.h. die Schnittebene der Figur 2 - über einen Umlauf hin betrachtet - viermal schneidet. Die an die­ser Nut benachbarten Ringsegmente überlappen sich in Umfangsrichtung, wie dies durch die unterschiedliche Schraffur in Figur 2 angedeutet ist. Damit wird vermie­den, daß sich die Nuten 16 auf der Werkstückoberfläche beim Schleifvorgang abbilden.Furthermore, it can be seen in FIG. 2 that the groove intersects the central plane, ie the sectional plane of FIG. 2, viewed four times over one revolution. The ring segments adjacent to this groove overlap in the circumferential direction, as is due to the different Hatching is indicated in Figure 2. This prevents the grooves 16 from forming on the workpiece surface during the grinding process.

In Figur 5 ist eine abgewandelte Ausführungsform der erfindungsgemäßen Kontaktwalze dargestellt, wobei die Zwischenschicht nicht aus einer geschlossenen zylindri­schen Schicht besteht, sondern von vier Rippen 12' ge­bildet ist, die mit gleichen Abständen voneinander achsparallel auf dem Kern 10 angeordnet sind. Das Mate­rial der Rippen 12' entspricht dem Material der Zwi­schenschicht 12 bei der Ausführungsform gemäß den Figu­ren 1 bis 4. Alle übrigen Elemente der Kontaktwalze gemäß Figur 5 stimmen mit denen der Ausführungsform gemäß den Figuren 1 bis 4 überein. Die in Figur 5 dar­gestellte Lösung hat den Vorteil, daß die Ringe oder Ringsegmente 14 leichter montiert werden können.FIG. 5 shows a modified embodiment of the contact roller according to the invention, wherein the intermediate layer does not consist of a closed cylindrical layer, but is formed by four ribs 12 ′ which are arranged on the core 10 with the same spacing from one another. The material of the ribs 12 ′ corresponds to the material of the intermediate layer 12 in the embodiment according to FIGS. 1 to 4. All other elements of the contact roller according to FIG. 5 correspond to those of the embodiment according to FIGS. 1 to 4. The solution shown in Figure 5 has the advantage that the rings or ring segments 14 can be assembled more easily.

Claims (8)

Kontaktwalze für Bandschleifmaschinen mit einem Stahlkern (10) und einem diesen umgebenden Mantel umfassend eine den Stahlkern (10) mindestens teil­weise bedeckende Zwischenschicht (12, 12') aus elastisch nachgiebigem Material und einer Vielzahl von der Außenoberfläche der Zwischenschicht (12, 12') angeordneten und zur Anlage an dem Schleif­band bestimmten äußeren Elementen (14) aus einem harten Material, dadurch gekennzeichnet, daß die aus dem harten Material bestehenden Elemente von geschlossenen Ringen (14) gebildet sind, welche die elastische Zwischenschicht (12, 12') umschlie­ßen und durch Ringnuten (16) voneinander getrennt axial nebeneinander angeordnet sind.Contact roller for belt grinding machines with a steel core (10) and a jacket surrounding it, comprising an intermediate layer (12, 12 ') at least partially covering the steel core (10) made of elastically resilient material and a large number of the outer surface of the intermediate layer (12, 12') and outer elements (14) made of a hard material for contact with the grinding belt, characterized in that the elements made of the hard material are formed by closed rings (14) which enclose and through the elastic intermediate layer (12, 12 ') Annular grooves (16) are arranged axially next to one another separately. Kontaktwalze nach Anspruch 1, dadurch gekennzeich­net, daß die Ringe (14) aus stahl bestehen.Contact roller according to claim 1, characterized net gekennzeich that the rings (14) are made of steel. Kontaktwalze nach Anspruch 1 oder 2, dadurch ge­kennzeichnet, daß die Breite der Nuten (16) und die Breite der Ringe (14) so bemessen ist, daß sich benachbarte Ringe (14) - in Umfangsrichtung der Kontaktwalze betrachte - mehrfach überlappen.Contact roller according to claim 1 or 2, characterized in that the width of the grooves (16) and the width of the rings (14) is so dimensioned that adjacent rings (14) - regarded in the circumferential direction of the contact roller - repeatedly overlap. Kontaktwalze nach Anspruch 3, dadurch gekennzeich­net, daß die Ränder der Ringe (14) derart konti­nuierlich gekrümmt sind und der Abstand zweier einander benachbarter Ringe (14) derart gewählt ist, daß die zwischen ihnen verlaufende Ringnut (16) eine achsnormale Mittelebene (II-II) viermal schneidet.Contact roller according to claim 3, characterized net gekennzeich that the edges of the rings (14) are so continuously curved and the spacing between two adjacent rings (14) is selected such that the extending between them annular groove (16) axially normal central plane (II- II) cuts four times. Kontaktwalze nach Anspruch 4, dadurch gekennzeich­net, daß die Ränder der Ringe (14) der Kontur einer Schnittlinie folgen, die sich aus einem Schnitt der Ringe (14) mit einem Zylinder ergibt, dessen Durchmesser gegenüber dem Ringdurchmesser groß ist und dessen Achse senkrecht zur Ringachse gerichtet ist.Contact roller according to claim 4, characterized net gekennzeich that the edges of the rings (14) follow the contour of a cutting line which results from a section of the rings (14) with a cylinder whose diameter than the ring diameter is large and its axis perpendicular to the Ring axis is directed. Kontaktwalze nach einem der Ansprüche 1 bis 5, da­durch gekennzeichnet, daß die Zwischenschicht aus einer Mehrzahl von Rippen (12') besteht, die mit Abständen voneinander und parallel zueinander auf dem Kern (10) angeordnet sind.Contact roller according to one of claims 1 to 5, characterized in that the intermediate layer consists of a plurality of ribs (12 ') which are arranged at intervals from one another and parallel to one another on the core (10). Kontaktwalze nach Anspruch 6, dadurch gekennzeich­net, daß die Rippen (12') achsparallel gerichtet sind.Contact roller according to claim 6, characterized in that the ribs are directed (12 ') parallel to the axis. Kontaktwalze nach einem der Ansprüche 2 bis 7, da­durch gekennzeichnet, daß die Stahlringe (14) auf ihrer Außenumfangsfläche mit einem anderen Materi­al, z. B. Gummi beschichtet sind.Contact roller according to one of claims 2 to 7, characterized in that the steel rings (14) on its outer peripheral surface with a different material, for. B. rubber coated.
EP90122747A 1989-11-30 1990-11-28 Contact roller for belt grinding machine Expired - Lifetime EP0430207B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8914141U 1989-11-30
DE8914141U DE8914141U1 (en) 1989-11-30 1989-11-30 Hybrid contact roller for belt grinder

Publications (2)

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EP0430207A1 true EP0430207A1 (en) 1991-06-05
EP0430207B1 EP0430207B1 (en) 1993-06-16

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EP90122747A Expired - Lifetime EP0430207B1 (en) 1989-11-30 1990-11-28 Contact roller for belt grinding machine

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US (1) US5085010A (en)
EP (1) EP0430207B1 (en)
DE (2) DE8914141U1 (en)

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CN110491583A (en) * 2019-09-10 2019-11-22 武汉新天地电工科技有限公司 Minerals halide-free low-smoke fireproof cable

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FR2673563B1 (en) * 1991-03-08 1993-06-11 Skid Sa APPARATUS FOR SANDING SKIS.
US5339570A (en) * 1992-08-17 1994-08-23 Minnesota Mining And Manufacturing Company Contact wheel
US5820446A (en) * 1996-06-07 1998-10-13 Komag, Incorporated Apparatus and method for texturing rigid-disk substrates
US7303464B1 (en) 2006-10-13 2007-12-04 3M Innovative Properties Company Contact wheel
TW201244953A (en) * 2011-05-03 2012-11-16 Hon Hai Prec Ind Co Ltd Paper transmitting apparatus
US10974919B2 (en) * 2012-11-14 2021-04-13 Shark Wheel, Inc. Device and method for aligning material sheets
CN104249284A (en) * 2013-06-25 2014-12-31 苏州意玛斯砂光设备有限公司 Contact roller for sanding machine

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FR1046044A (en) * 1950-12-28 1953-12-02 Scheer & Cie C F Control cylinder for grinding belts
US3229424A (en) * 1963-05-31 1966-01-18 Joseph J Fielder Concentric motor and cooling pulley assembly for abraders and the like
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FR1046044A (en) * 1950-12-28 1953-12-02 Scheer & Cie C F Control cylinder for grinding belts
US2605592A (en) * 1951-05-10 1952-08-05 William J Cosmos Contact wheel, mainly for finishing belts
US3229424A (en) * 1963-05-31 1966-01-18 Joseph J Fielder Concentric motor and cooling pulley assembly for abraders and the like
DE2502718A1 (en) * 1975-01-23 1976-07-29 Baehre & Greten Machine for straightening timber plates - has annularly or helically grooved counter rollers above belt on rollers

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN110491583A (en) * 2019-09-10 2019-11-22 武汉新天地电工科技有限公司 Minerals halide-free low-smoke fireproof cable
CN110491583B (en) * 2019-09-10 2021-02-09 武汉新天地电工科技有限公司 Mineral halogen-free low-smoke flame-retardant cable

Also Published As

Publication number Publication date
US5085010A (en) 1992-02-04
DE59001785D1 (en) 1993-07-22
DE8914141U1 (en) 1991-03-28
EP0430207B1 (en) 1993-06-16

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