EP0551457B1 - Grinder for grinding a cylindrical or spherical surface of a roll, especially a paper machine roll - Google Patents

Grinder for grinding a cylindrical or spherical surface of a roll, especially a paper machine roll Download PDF

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Publication number
EP0551457B1
EP0551457B1 EP92912588A EP92912588A EP0551457B1 EP 0551457 B1 EP0551457 B1 EP 0551457B1 EP 92912588 A EP92912588 A EP 92912588A EP 92912588 A EP92912588 A EP 92912588A EP 0551457 B1 EP0551457 B1 EP 0551457B1
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EP
European Patent Office
Prior art keywords
roller
grinding apparatus
grinding
rollers
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP92912588A
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German (de)
French (fr)
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EP0551457A1 (en
Inventor
Urs Maier
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Farros Blatter AG
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Farros Blatter AG
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Classifications

    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/16—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged
    • B24B5/167—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged for rolls with large curvature radius, e.g. mill rolls
    • 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
    • B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
    • 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
    • B24B21/18—Accessories
    • B24B21/20—Accessories for controlling or adjusting the tracking or the tension of the grinding belt
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/363—Single-purpose machines or devices for grinding surfaces of revolution in situ

Definitions

  • the invention relates to a grinding device for grinding a cylindrical or spherical surface of a roller, in particular a roller of a paper machine, according to the preamble of claim 1.
  • a grinding device of the type mentioned is known for example from CH-PS 668 212.
  • This device is relatively complicated and, accordingly, its use is very complex since it requires a special support and an adjustable copying template which is designed as a guideway and corresponds to the desired value of the surface shape.
  • the object of the invention is to provide a grinding device of the type mentioned at the outset, which has a simple structure and can be used easily.
  • the object is achieved according to the invention by the characterizing features of claim 1. Due to the fact that the grinding device uses the scraping device assigned to a roller as a carrier and optionally as a copying template, the additional attachment of a carrier and, if appropriate, a copying template is unnecessary.
  • the grinder is accordingly simple and inexpensive and can also be used particularly quickly and easily. This advantage is particularly important when a damaged roller has to be revised.
  • the quick and easy application of the grinding device also reduces the downtime of a production system.
  • Claim 2 describes a particularly simple solution.
  • a configuration according to claim 3 is particularly expedient, as a result of which not only the stability of the support is improved, but also the possibility arises of being able to arrange the grinding device on both sides of the frame.
  • the grinder can be guided along the roller by hand.
  • An embodiment according to claim 4 is particularly advantageous.
  • the arrangement of a clutch can prevent the grinding device from running without the drive being switched on. This can prevent scratches when the frame is stationary.
  • An embodiment of the grinding device according to claim 6 is also advantageous, since the reciprocal coupling of the grinding device to the frame makes it possible to use the Grinding device is increased.
  • the contact roller can be rigidly mounted, in particular when a roller with a cylindrical surface is to be ground.
  • a configuration according to claim 8 is particularly advantageous, which enables the contact roller to adapt to the contour of the surface of the roller, so that, for example, cambered rollers can also be ground.
  • a particularly advantageous embodiment describes claim 9.
  • the grinding accuracy can be improved by a development according to claim 10, since then the pressure of the contact roller is constant at all angular positions of the contact roller.
  • a further development according to claim 11 is particularly advantageous, which enables an automatic, finely adjustable feed of the grinding device.
  • tensioning the sanding belt such as tensioning rollers and the like.
  • An embodiment according to claim 12 is particularly advantageous and simple, as a result of which a symmetrical structure of the belt grinding device is favored.
  • the belt tensioning device can be formed by a mechanical spring device.
  • a particularly advantageous embodiment of the grinder describes claim 13, which enables subtle control of the grinder, so that even rolls with non-cylindrical surfaces over the entire length with the same Contact pressure can be ground.
  • the result is a grinding device that can be adjusted to a wide variety of grinding conditions, so that grinding is possible with the highest accuracy.
  • FIGS 1 and 2 show the overall view of a grinding device which is arranged on a scraping device 2 of a roller 4, for example the roller of a paper machine.
  • the grinding device contains a frame 6 with rollers 8 which are placed on a scraper 10 of the scraper device 2, the scraper device 2 being shown in the state pivoted away from the roller 4.
  • the frame 6 contains a holder 12 with a support roller 14 which is supported laterally on the carrier 16 of the scraping device 2.
  • a grinding device 18 is also attached, which is designed as a belt grinding device.
  • the holder 12 has an upper arm 20 and a lower arm 22 which are fastened to the frame 6 transversely to the plane of the rollers 8.
  • Each arm 20, 22 is provided with a double clamping member 24, which is fixed to the arm 20, 22 by means of a clamping screw 26.
  • a rod 28, which is arranged transversely to the arms, is fastened to the clamping member and is likewise fixed by means of clamping screws 30.
  • the support roller 14 is mounted, the plane of which extends transversely to the plane of the rollers 8. With the help of the clamping members 24, the rod 28 can be adjusted both in its position on the arms 20, 22 and in its height.
  • the arrangement of the holder 12 is such that the rod 28 is arranged halfway along the length of the frame 6 between the rollers 8.
  • this holder enables the grinding device 18 can alternately be attached to the end faces 32, 34 of the frame 6.
  • the grinding device 18 is constructed essentially in mirror image with respect to the horizontal plane 36, so that by turning the grinding device, the associated mounting plate 38 can optionally be attached to one of the two end faces 32, 34 of the frame 6.
  • FIGS. 3 and 4 show details of the drive of the rollers 8 of the frame 6.
  • the frame contains a drive motor 40 which drives a drive wheel 46 for a toothed belt 48 via a gear 42 and a clutch 44.
  • the latter is guided via gears 50 which are fastened to shafts 52 on which the rollers 8 are arranged.
  • FIGS. 5 and 6 show an additional securing device 54 for securing the grinding device on the scraping device 2.
  • the scraper 10 of the scraping device 2 is first replaced by an L-shaped rail 56 in the scraping device 2.
  • the rollers 8 run on the rail 56.
  • the securing device 54 contains locking rollers 58 which are assigned to the rollers 8 and can be pivoted in against the inside 60 of the L-shaped rail 56.
  • the securing rollers 58 are fastened to a pivot axis 62, which in turn is pivotably mounted in arms 64 on the frame 6.
  • a lever 66 is attached to the pivot axis 62 and is connected to a threaded spindle 70 via a coupling member 68.
  • the latter cooperates with a rotatably mounted sleeve 72, which has an internal thread, not shown.
  • the sleeve 72 rotatably mounted in the frame 6 is provided with a hand crank 74. By turning the hand crank 74, the securing rollers 58 can be extended and retracted and pressed against the inside 60 of the L-shaped rail 56.
  • FIGS. 1, 2 and 7 show the grinding device 18 in the form of a belt grinding device.
  • the grinding belt 76 is guided via a floating contact roller 78, fixed guide rollers 80, 82 adjacent to it on both sides and a drive roller 86 driven by a drive motor 84.
  • the drive motor 84 is arranged on a carriage 88, which is arranged in a housing 92 containing the floating bearing 90 of the contact roller 78.
  • a belt tensioning device 94 which cooperates with the slide 88 of the drive motor 84 and thereby prestresses the drive roller 86 against the contact roller 78, is used to pretension the grinding belt.
  • the belt tensioning device 94 has a piston / cylinder unit 96 which is connected to a fluid device 102 via lines 98, 100.
  • the floating bearing 90 of the contact roller 78 contains longitudinal guides 104, 106 arranged in the housing 92 for an axis 108 on which the contact roller 78 is rotatably mounted.
  • the longitudinal guides 104, 106 run perpendicular to the surface to be machined, ie radially to the roller 4.
  • the axis 108 is resiliently supported on piston / cylinder units 110, 112.
  • the pressure chambers of the piston / cylinder units are connected to one another via connecting lines 114, 116.
  • the piston / cylinder units 110, 112 are also connected to the fluid device 102 via lines 118, 120.
  • the piston / cylinder units 110, 112 also serve to feed the contact roller against the surface to be machined, that is to say the roller 4.
  • a straightening device 122 serves to align the contact roller when the contact roller 78 is set and placed on the surface to be machined by one-sided placement and to avoid grinding the roller 4.
  • the straightening device 122 contains setscrews 124 (only one of which is shown) arranged on both sides of the contact roller 78 with a wear-resistant contact surface 126 which is a few tooth millimeters in relation to the working position of the grinding belt is reset.
  • the threaded pin 124 is fastened on a protective cover 128 for the floating bearing 90, which in turn is connected to the axis 108 of the contact roller 78. If the contact roller 78 is delivered unevenly, one of the two setscrews 124 comes into contact with the roller 4 and brings the contact roller 78 into the position essentially aligned with respect to the roller.
  • the control of the grinding device via the fluid device 102 is carried out in a manner not shown in such a way that the grinding belt 76 is first given a specific pretensioning force in the piston / cylinder unit 96.
  • the contact roller 78 is supported via the axis 108 on the corresponding piston / cylinder units 110, 112, in which the necessary counter pressure is built up. If the contact roller 78 is advanced with the aid of the piston / cylinder units 110, 112 against the surface to be processed, ie the roller 4, the piston / cylinder unit 96 is retracted to the extent that the belt tension once set remains the same.
  • the guide rollers 80, 82 ensure the stabilization of the grinding belt on the contact roller 78, in particular also when the contact roller 78 assumes an angular position deviating from the basic position due to the contour of the surfaces to be machined due to the floating bearing 90. Due to the floating bearing 90, the contact roller 78 can follow the contour of a surface to be ground. This makes it possible to regrind, in particular to repair, an existing surface without special measures.
  • the fluid device 102 ensures that even when the grinding device is guided in a straight line, the contact roller contact pressure, which for example follows a convex contour of the surface to be machined, is always kept constant.

Abstract

PCT No. PCT/CH92/00131 Sec. 371 Date Mar. 25, 1993 Sec. 102(e) Date Mar. 25, 1993 PCT Filed Jun. 30, 1992 PCT Pub. No. WO93/02834 PCT Pub. Date Feb. 18, 1993.The grinder has a frame (6) movable on rollers (8) on which is fitted a grinding device (18) drivable by a motor (84). In order to simplify the grinder and its application to a roll (4) to be treated, the rollers (8) are designed to lower the frame (6) on a scraper (10) or on a rail (56) of a scraper device (2) associated with the roll (4), which rail replaces the scraper (10). The frame (6) has a supporting roller (14) fitted on an adjustable holder (12) which is laterally supported on a bearer (16) for the scraper (10).

Description

Die Erfindung betrifft ein Schleifgerät zum Schleifen einer zylindrischen oder sphärischen Oberfläche einer Walze, insbesondere einer Walze einer Papiermaschine, gemäss Oberbegriff des Anspruches 1.The invention relates to a grinding device for grinding a cylindrical or spherical surface of a roller, in particular a roller of a paper machine, according to the preamble of claim 1.

Ein Schleifgerät der eingangs genannten Art ist beispielsweise aus der CH-PS 668 212 bekannt. Dieses Gerät ist relativ kompliziert und dementsprechend sein Einsatz sehr aufwendig, da es einen speziellen Träger sowie eine dem Sollwert der Oberflächenform entsprechende, als Führungsbahn ausgebildete, einstellbare Kopierschablone erfordert.A grinding device of the type mentioned is known for example from CH-PS 668 212. This device is relatively complicated and, accordingly, its use is very complex since it requires a special support and an adjustable copying template which is designed as a guideway and corresponds to the desired value of the surface shape.

Aufgabe der Erfindung ist es, ein Schleifgerät der eingangs genannten Art zu schaffen, welches einen einfachen Aufbau aufweist und einfach angewendet werden kann.The object of the invention is to provide a grinding device of the type mentioned at the outset, which has a simple structure and can be used easily.

Die Aufgabe wird erfindungsgemäss durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Dadurch, dass das Schleifgerät die einer Walze zugeordnete Schabvorrichtung als Träger und gegebenenfalls als Kopierschablone verwendet, ist der zusätzliche Anbau eines Trägers sowie gegebenenfalls einer Kopierschablone überflüssig. Das Schleifgerät ist dementsprechend einfach und preisgünstig und lässt sich überdies insbesondere schnell und einfach einsetzen. Dieser Vorteil kommt insbesondere dann zum Tragen, wenn eine beschädigte Walze revidiert werden muss.The object is achieved according to the invention by the characterizing features of claim 1. Due to the fact that the grinding device uses the scraping device assigned to a roller as a carrier and optionally as a copying template, the additional attachment of a carrier and, if appropriate, a copying template is unnecessary. The grinder is accordingly simple and inexpensive and can also be used particularly quickly and easily. This advantage is particularly important when a damaged roller has to be revised.

Die schnelle und einfache Einsatzmöglichkeit des Schleifgerätes reduziert somit auch die Ausfallzeiten einer Produktionsanlage.The quick and easy application of the grinding device also reduces the downtime of a production system.

Vorteilhafte Ausgestaltungen des Schleifgerätes sind in den Ansprüchen 2 bis 14 beschrieben.Advantageous embodiments of the grinding device are described in claims 2 to 14.

Für die Ausgestaltung des Halters für die Stützrolle ergeben sich diverse Möglichkeiten. Der Anspruch 2 beschreibt eine besonders einfache Lösung. Besonders zweckmässig ist eine Ausgestaltung nach Anspruch 3, wodurch nicht nur die Stabilität der Abstützung verbessert wird, sondern sich auch die Möglichkeit ergibt, die Schleifvorrichtung beidseits des Gestells anordnen zu können.There are various possibilities for the design of the holder for the support roller. Claim 2 describes a particularly simple solution. A configuration according to claim 3 is particularly expedient, as a result of which not only the stability of the support is improved, but also the possibility arises of being able to arrange the grinding device on both sides of the frame.

Im einfachsten Fall kann das Schleifgerät von Hand längs der Walze geführt werden. Besonders vorteilhaft ist eine Ausgestaltung nach Anspruch 4. Insbesondere die Anordnung einer Schaltkupplung kann verhindern, dass die Schleifvorrichtung läuft, ohne dass der Antrieb eingeschaltet ist. Dadurch kann das Einschleifen von Riefen bei stillstehendem Gestell verhindert werden.In the simplest case, the grinder can be guided along the roller by hand. An embodiment according to claim 4 is particularly advantageous. In particular, the arrangement of a clutch can prevent the grinding device from running without the drive being switched on. This can prevent scratches when the frame is stationary.

Im einfachsten Fall genügt es, das Schleifgerät am Schaber der Schabvorrichtung aufzuhängen. Besonders vorteilhaft ist jedoch eine Weiterbildung nach Anspruch 5, die insbesondere den Einsatz auch dann gestattet, wenn die Anordnung der Schabvorrichtung relativ ungünstig ist, d.h. unterhalb der horizontalen Mittelebene der Walze liegt. Durch die L-förmige Schiene und die daran angreifenden Sicherungsrollen wird der Halt des Schleifgerätes an der Schabvorrichtung verbessert.In the simplest case, it is sufficient to hang the grinding device on the scraper of the scraping device. However, a further development according to claim 5 is particularly advantageous, which in particular permits use even if the arrangement of the scraping device is relatively unfavorable, i.e. is below the horizontal central plane of the roller. The L-shaped rail and the locking rollers acting on it improve the grip of the grinder on the scraping device.

Vorteilhaft ist auch eine Ausgestaltung des Schleifgerätes nach Anspruch 6, da durch die wechselseitige Ankupplung der Schleifvorrichtung am Gestell die Einsatzmöglichkeit des Schleifgerätes erhöht wird.An embodiment of the grinding device according to claim 6 is also advantageous, since the reciprocal coupling of the grinding device to the frame makes it possible to use the Grinding device is increased.

Grundsätzlich ist es möglich, dass Schleifgerät mit einer Schleifvorrichtung zu bestücken, die eine Schleifscheibe aufweist. Vorteilhafter ist jedoch eine Ausgestaltung nach Anspruch 7.In principle, it is possible to equip the grinding device with a grinding device that has a grinding wheel. However, an embodiment according to claim 7 is more advantageous.

Bei der Bandschleifvorrichtung kann die Kontaktrolle starr gelagert sein, insbesondere dann, wenn eine Walze mit einer zylindrischen Oberfläche geschliffen werden soll. Besonders vorteilhaft ist jedoch eine Ausgestaltung nach Anspruch 8, die es ermöglicht, dass sich die Kontaktrolle der Kontur der Oberfläche der Walze anpasst, so dass beispielsweise auch bombierte Walzen geschliffen werden können. Für die Ausgestaltung der schwimmenden Lagerung der Kontaktrolle für das Schleifband ergeben sich diverse Möglichkeiten. Eine besonders vorteilhafte Ausgestaltung umschreibt Anspruch 9. Die Schleifgenauigkeit lässt sich durch eine Weiterbildung nach Anspruch 10 verbessern, da dann der Druck der Kontaktrolle bei allen Winkellagen der Kontaktrolle gleichbleibend ist. Besonders vorteilhaft ist eine Weiterbildung nach Anspruch 11, die eine automatische feinregulierbare Zustellung der Schleifvorrichtung ermöglicht. Für das Spannen des Schleifbandes ergeben sich die verschiedensten Ausgestaltungsmöglichkeiten wie Spannrollen und dergleichen. Besonders vorteilhaft und einfach ist eine Ausgestaltung nach Anspruch 12, wodurch ein symmetrischer Aufbau der Bandschleifvorrichtung begünstigt wird. Dabei kann die Bandspannvorrichtung im einfachsten Fall durch eine mechanische Federvorrichtung gebildet werden.In the belt grinding device, the contact roller can be rigidly mounted, in particular when a roller with a cylindrical surface is to be ground. However, a configuration according to claim 8 is particularly advantageous, which enables the contact roller to adapt to the contour of the surface of the roller, so that, for example, cambered rollers can also be ground. There are various possibilities for the design of the floating bearing of the contact roller for the grinding belt. A particularly advantageous embodiment describes claim 9. The grinding accuracy can be improved by a development according to claim 10, since then the pressure of the contact roller is constant at all angular positions of the contact roller. A further development according to claim 11 is particularly advantageous, which enables an automatic, finely adjustable feed of the grinding device. There are various design options for tensioning the sanding belt, such as tensioning rollers and the like. An embodiment according to claim 12 is particularly advantageous and simple, as a result of which a symmetrical structure of the belt grinding device is favored. In the simplest case, the belt tensioning device can be formed by a mechanical spring device.

Eine besonders vorteilhafte Ausgestaltung des Schleifgerätes beschreibt Anspruch 13, die eine subtile Steuerung des Schleifgerätes ermöglicht, so dass auch Walzen mit nicht zylindrischen Oberflächen über die ganze Länge mit gleichbleibendem Anpressdruck geschliffen werden können. Es ergibt sich ein Schleifgerät, das auf die verschiedensten Schleifbedingungen eingestellt werden kann, so dass ein Schleifen mit höchster Genauigkeit möglich ist.A particularly advantageous embodiment of the grinder describes claim 13, which enables subtle control of the grinder, so that even rolls with non-cylindrical surfaces over the entire length with the same Contact pressure can be ground. The result is a grinding device that can be adjusted to a wide variety of grinding conditions, so that grinding is possible with the highest accuracy.

Besonders zweckmässig ist die Ausbildung des Schleifgerätes nach Anspruch 14, die ein verkantetes Ansetzen des Schleifgliedes an der Walze und somit fehlerhafte Schleifmarken verhindert.Particularly expedient is the design of the grinding device according to claim 14, which prevents the grinding element from becoming jammed on the roller and thus preventing faulty grinding marks.

Ausführungsbeispiele des Gegenstandes der Erfindung werden nachfolgend anhand schematischer Zeichnungen näher beschrieben, dabei zeigen:

Figur 1
ein an einer Walze angesetztes Schleifgerät in Seitenansicht, in Verschieberichtung;
Figur 2
das Schleifgerät der Figur 1 in Ansicht von oben;
Figur 3
das Gestell des Schleifgerätes im Schnitt III-III der Figur 4;
Figur 4
das Gestell des Schleifgerätes im Schnitt IV-IV der Figur 3;
Figur 5
das Gestell des Schleifgerätes mit einer zusätzlichen Sicherungsvorrichtung im Schnitt V-V der Figur 6;
Figur 6
die Sicherungsvorrichtung gemäss Figur 5 in Ansicht auf die rechte Seite;
Figur 7
die Schleifvorrichtung der Figur 1 im Horizontalschnitt.
Exemplary embodiments of the subject matter of the invention are described in more detail below with the aid of schematic drawings, in which:
Figure 1
a grinder attached to a roller in side view, in the direction of displacement;
Figure 2
the grinder of Figure 1 in top view;
Figure 3
the frame of the grinder in section III-III of Figure 4;
Figure 4
the frame of the grinder in section IV-IV of Figure 3;
Figure 5
the frame of the grinder with an additional safety device in section VV of Figure 6;
Figure 6
the safety device according to Figure 5 in view on the right side;
Figure 7
the grinding device of Figure 1 in horizontal section.

Die Figuren 1 und 2 zeigen die Gesamtansicht eines Schleifgerätes, welches an einer Schabvorrichtung 2 einer Walze 4, beispielsweise der Walze einer Papiermaschine, angeordnet ist. Das Schleifgerät enthält ein Gestell 6 mit Rollen 8, die auf einem Schaber 10 der Schabvorrichtung 2 abgesetzt sind, wobei die Schabvorrichtung 2 in dem von der Walze 4 abgeschwenkten Zustand gezeigt ist. Das Gestell 6 enthält einen Halter 12 mit einer Stützrolle 14, die seitlich am Träger 16 der Schabvorrichtung 2 abgestützt ist. Am Gestell 6 ist überdies eine Schleifvorrichtung 18 befestigt, die als Bandschleifvorrichtung ausgestaltet ist.Figures 1 and 2 show the overall view of a grinding device which is arranged on a scraping device 2 of a roller 4, for example the roller of a paper machine. The grinding device contains a frame 6 with rollers 8 which are placed on a scraper 10 of the scraper device 2, the scraper device 2 being shown in the state pivoted away from the roller 4. The frame 6 contains a holder 12 with a support roller 14 which is supported laterally on the carrier 16 of the scraping device 2. On the frame 6, a grinding device 18 is also attached, which is designed as a belt grinding device.

Der Halter 12 weist einen oberen Arm 20 und einen unteren Arm 22 auf, die quer zur Ebene der Rollen 8 am Gestell 6 befestigt sind. Jeder Arm 20,22 ist mit einem doppelten Klemmglied 24 versehen, das jeweils mittels einer Klemmschraube 26 am Arm 20,22 fixiert ist. Am Klemmglied ist ein quer zu den Armen angeordneter Stab 28 befestigt und ebenfalls mittels Klemmschrauben 30 fixiert. Am unteren Ende des Stabes ist die Stützrolle 14 gelagert, deren Ebene quer zur Ebene der Rollen 8 verläuft. Mit Hilfe der Klemmglieder 24 kann der Stab 28 sowohl in seiner Lage an den Armen 20,22 wie in seiner Höhenlage eingestellt werden. Die Anordnung des Halters 12 ist so getroffen, dass der Stab 28 auf halber Länge des Gestells 6 zwischen den Rollen 8 angeordnet ist. Dadurch ergibt sich eine Dreipunktlagerung, die besonders stabil ist. Ausserdem ermöglicht es diese Halterung, dass die Schleifvorrichtung 18 wechselweise an den Stirnseiten 32,34 des Gestells 6 befestigt werden kann. Hierzu ist die Schleifvorrichtung 18 bezüglich der Horizontalebene 36 im wesentlichen spiegelbildlich aufgebaut, so dass durch Wenden der Schleifvorrichtung die zugehörige Montageplatte 38 wahlweise an einer der beiden Stirnseite 32,34 des Gestells 6 befestigt werden kann.The holder 12 has an upper arm 20 and a lower arm 22 which are fastened to the frame 6 transversely to the plane of the rollers 8. Each arm 20, 22 is provided with a double clamping member 24, which is fixed to the arm 20, 22 by means of a clamping screw 26. A rod 28, which is arranged transversely to the arms, is fastened to the clamping member and is likewise fixed by means of clamping screws 30. At the lower end of the rod, the support roller 14 is mounted, the plane of which extends transversely to the plane of the rollers 8. With the help of the clamping members 24, the rod 28 can be adjusted both in its position on the arms 20, 22 and in its height. The arrangement of the holder 12 is such that the rod 28 is arranged halfway along the length of the frame 6 between the rollers 8. This results in a three-point bearing that is particularly stable. In addition, this holder enables the grinding device 18 can alternately be attached to the end faces 32, 34 of the frame 6. For this purpose, the grinding device 18 is constructed essentially in mirror image with respect to the horizontal plane 36, so that by turning the grinding device, the associated mounting plate 38 can optionally be attached to one of the two end faces 32, 34 of the frame 6.

Die Figuren 3 und 4 zeigen Einzelheiten des Antriebes der Rollen 8 des Gestells 6. Hierzu enthält das Gestell einen Antriebsmotor 40, der über ein Getriebe 42 und eine Schaltkupplung 44 ein Treibrad 46 für einen Zahnriemen 48 antreibt. Letzterer ist über Zahnräder 50 geführt, die an Wellen 52 befestigt sind, an denen die Rollen 8 angeordnet sind.FIGS. 3 and 4 show details of the drive of the rollers 8 of the frame 6. For this purpose, the frame contains a drive motor 40 which drives a drive wheel 46 for a toothed belt 48 via a gear 42 and a clutch 44. The latter is guided via gears 50 which are fastened to shafts 52 on which the rollers 8 are arranged.

Die Figuren 5 und 6 zeigen eine zusätzliche Sicherungsvorrichtung 54 zur Sicherung des Schleifgerätes an der Schabvorrichtung 2. Hierzu ist zunächst der Schaber 10 der Schabvorrichtung 2 durch eine L-förmige Schiene 56 in der Schabvorrichtung 2 ersetzt. Die Rollen 8 laufen auf der Schiene 56. Die Sicherungsvorrichtung 54 enthält Sicherungsrollen 58, die den Rollen 8 zugeordnet sind und gegen die Innenseite 60 der L-förmigen Schiene 56 einschwenkbar sind. Hierzu sind die Sicherungsrollen 58 an einer Schwenkachse 62 befestigt, die ihrerseits in Auslegern 64 am Gestell 6 schwenkbar gelagert ist. An der Schwenkachse 62 ist ein Hebel 66 befestigt, der über ein Koppelglied 68 mit einer Gewindespindel 70 verbunden ist. Letztere wirkt mit einer drehbar gelagerten Hülse 72 zusammen, die ein nicht dargestelltes Innengewinde aufweist. Die im Gestell 6 drehbar gelagerte Hülse 72 ist mit einer Handkurbel 74 versehen. Durch Drehen an der Handkurbel 74 können die Sicherungsrollen 58 gegen die Innenseite 60 der L-förmigen Schiene 56 aus- und eingefahren sowie angedrückt werden.FIGS. 5 and 6 show an additional securing device 54 for securing the grinding device on the scraping device 2. For this purpose, the scraper 10 of the scraping device 2 is first replaced by an L-shaped rail 56 in the scraping device 2. The rollers 8 run on the rail 56. The securing device 54 contains locking rollers 58 which are assigned to the rollers 8 and can be pivoted in against the inside 60 of the L-shaped rail 56. For this purpose, the securing rollers 58 are fastened to a pivot axis 62, which in turn is pivotably mounted in arms 64 on the frame 6. A lever 66 is attached to the pivot axis 62 and is connected to a threaded spindle 70 via a coupling member 68. The latter cooperates with a rotatably mounted sleeve 72, which has an internal thread, not shown. The sleeve 72 rotatably mounted in the frame 6 is provided with a hand crank 74. By turning the hand crank 74, the securing rollers 58 can be extended and retracted and pressed against the inside 60 of the L-shaped rail 56.

Die Figuren 1, 2 und 7 zeigen die als Bandschleifvorrichtung ausgebildete Schleifvorrichtung 18. Das Schleifband 76 ist über eine schwimmend gelagerte Kontaktrolle 78, dieser beidseits benachbarte, feststehende Führungsrollen 80,82 und eine von einem Antriebsmotor 84 angetriebene Antriebsrolle 86 geführt. Der Antriebsmotor 84 ist auf einem Schlitten 88 angeordnet, der in einem die schwimmende Lagerung 90 der Kontaktrolle 78 enthaltenden Gehäuse 92 angeordnet. Zur Vorspannung des Schleifbandes dient eine Bandspannvorrichtung 94, die mit dem Schlitten 88 des Antriebsmotors 84 zusammenwirkt und dadurch die Antriebsrolle 86 entgegen der Kontaktrolle 78 vorspannt. Die Bandspannvorrichtung 94 weist ein Kolben/Zylinder-Aggregat 96 auf, welches über Leitungen 98,100 mit einer Fluid-Vorrichtung 102 verbunden ist. Die schwimmende Lagerung 90 der Kontaktrolle 78 enthält im Gehäuse 92 angeordnete Längsführungen 104,106 für eine Achse 108, auf der die Kontaktrolle 78 drehbar gelagert ist. Die Längsführungen 104,106 verlaufen senkrecht zu der zu bearbeitenden Fläche, d.h. radial zur Walze 4. In der Längsführung 104,106 ist die Achse 108 an Kolben/Zylinder-Aggregaten 110,112 nachgiebig abgestützt. Hierzu sind die Druckräume der Kolben/Zylinder-Aggregate über Verbindungsleitungen 114,116 miteinander verbunden. Die Kolben/Zylinder-Aggregate 110,112 sind überdies über Leitungen 118,120 an der Fluid-Vorrichtung 102 angeschlossen. Die Kolben/Zylinder-Aggregate 110,112 dienen gleichzeitig auch zur Zustellung der Kontaktrolle gegen die zu bearbeitende Fläche, d.h. die Walze 4. Eine Richtvorrichtung 122 dient zum Ausrichten der Kontaktrolle beim Zustellen und Aufsetzen der Kontaktrolle 78 an der zu bearbeitenden Fläche um ein einseitiges Aufsetzen und damit Anschleifen der Walze 4 zu vermeiden. Die Richtvorrichtung 122 enthält beidseits der Kontaktrolle 78 angeordnete Gewindestifte 124 (von denen nur einer dargestellt ist) mit einer verschleissfesten Kontaktfläche 126, die bezüglich der Arbeitsstelle des Schleifbandes um wenige Zahntelmillimeter zurückgesetzt ist. Der Gewindestift 124 ist auf einer Schutzabdeckung 128 für die schwimmende Lagerung 90 befestigt, die ihrerseits mit der Achse 108 der Kontaktrolle 78 verbunden ist. Wird die Kontaktrolle 78 ungleichmässig zugestellt, so kommt einer der beiden Gewindestifte 124 mit der Walze 4 in Berührung und bringt die Kontaktrolle 78 in die bezüglich der Walze im wesentlichen ausgerichtete Stellung.FIGS. 1, 2 and 7 show the grinding device 18 in the form of a belt grinding device. The grinding belt 76 is guided via a floating contact roller 78, fixed guide rollers 80, 82 adjacent to it on both sides and a drive roller 86 driven by a drive motor 84. The drive motor 84 is arranged on a carriage 88, which is arranged in a housing 92 containing the floating bearing 90 of the contact roller 78. A belt tensioning device 94, which cooperates with the slide 88 of the drive motor 84 and thereby prestresses the drive roller 86 against the contact roller 78, is used to pretension the grinding belt. The belt tensioning device 94 has a piston / cylinder unit 96 which is connected to a fluid device 102 via lines 98, 100. The floating bearing 90 of the contact roller 78 contains longitudinal guides 104, 106 arranged in the housing 92 for an axis 108 on which the contact roller 78 is rotatably mounted. The longitudinal guides 104, 106 run perpendicular to the surface to be machined, ie radially to the roller 4. In the longitudinal guide 104, 106, the axis 108 is resiliently supported on piston / cylinder units 110, 112. For this purpose, the pressure chambers of the piston / cylinder units are connected to one another via connecting lines 114, 116. The piston / cylinder units 110, 112 are also connected to the fluid device 102 via lines 118, 120. The piston / cylinder units 110, 112 also serve to feed the contact roller against the surface to be machined, that is to say the roller 4. A straightening device 122 serves to align the contact roller when the contact roller 78 is set and placed on the surface to be machined by one-sided placement and to avoid grinding the roller 4. The straightening device 122 contains setscrews 124 (only one of which is shown) arranged on both sides of the contact roller 78 with a wear-resistant contact surface 126 which is a few tooth millimeters in relation to the working position of the grinding belt is reset. The threaded pin 124 is fastened on a protective cover 128 for the floating bearing 90, which in turn is connected to the axis 108 of the contact roller 78. If the contact roller 78 is delivered unevenly, one of the two setscrews 124 comes into contact with the roller 4 and brings the contact roller 78 into the position essentially aligned with respect to the roller.

Die Steuerung der Schleifvorrichtung über die Fluid-Vorrichtung 102, die vorzugsweise als Druckluftvorrichtung ausgebildet ist, erfolgt in nicht näher dargestellter Weise derart, dass zunächst im Kolben/Zylinder-Aggregat 96 dem Schleifband 76 eine bestimmte Vorspannkraft erteilt wird. Hierzu stützt sich die Kontaktrolle 78 über die Achse 108 auf den entsprechenden Kolben/Zylinder-Aggregaten 110,112 ab, in denen der notwendige Gegendruck aufgebaut ist. Wird die Kontaktrolle 78 mit Hilfe der Kolben/Zylinder-Aggregate 110,112 gegen die zu bearbeitende Fläche, d.h. die Walze 4 vorgeschoben, so wird das Kolben/Zylinder-Aggregat 96 in dem Masse zurückgefahren, dass die einmal eingestellte Bandspannung gleich bleibt. Beim Schleifen sorgen die Führungsrollen 80,82 für die Stabilisierung des Schleifbandes auf der Kontaktrolle 78, insbesondere auch dann, wenn auf Grund der Kontur der zu bearbeitenden Flächen die Kontaktrolle 78 aufgrund der schwimmenden Lagerung 90 eine von der Grundstellung abweichende Winkellage einnimmt. Aufgrund der schwimmenden Lagerung 90 kann die Kontaktrolle 78 der Kontur einer zu schleifenden Fläche folgen. Dadurch ist es möglich, ohne besondere Massnahmen eine bestehende Fläche nachzuschleifen, insbesondere auszubessern. Die Fluid-Vorrichtung 102 sorgt dafür, dass selbst bei gradliniger Führung der Schleifvorrichtung der Anpressdruck der Kontaktrolle, die beispielsweise einer bombierten Kontur der zu bearbeitenden Fläche folgt, stets konstant gehalten wird.The control of the grinding device via the fluid device 102, which is preferably designed as a compressed air device, is carried out in a manner not shown in such a way that the grinding belt 76 is first given a specific pretensioning force in the piston / cylinder unit 96. For this purpose, the contact roller 78 is supported via the axis 108 on the corresponding piston / cylinder units 110, 112, in which the necessary counter pressure is built up. If the contact roller 78 is advanced with the aid of the piston / cylinder units 110, 112 against the surface to be processed, ie the roller 4, the piston / cylinder unit 96 is retracted to the extent that the belt tension once set remains the same. During grinding, the guide rollers 80, 82 ensure the stabilization of the grinding belt on the contact roller 78, in particular also when the contact roller 78 assumes an angular position deviating from the basic position due to the contour of the surfaces to be machined due to the floating bearing 90. Due to the floating bearing 90, the contact roller 78 can follow the contour of a surface to be ground. This makes it possible to regrind, in particular to repair, an existing surface without special measures. The fluid device 102 ensures that even when the grinding device is guided in a straight line, the contact roller contact pressure, which for example follows a convex contour of the surface to be machined, is always kept constant.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

22nd
SchabvorrichtungScraping device
44th
Walzeroller
66
Gestellframe
88th
Rollerole
1010th
Schaberscraper
1212th
Halterholder
1414
StützrolleSupport roller
1616
Trägercarrier
1818th
SchleifvorrichtungGrinding device
2020th
oberer Armupper arm
2222
unterer Armlower arm
2424th
KlemmgliedClamping member
2626
KlemmschraubeClamping screw
2828
StabRod
3030th
KlemmschraubeClamping screw
3232
StirnseiteFace
3434
StirnseiteFace
3636
HorizontalebeneHorizontal plane
3838
MontageplatteMounting plate
4040
AntriebsmotorDrive motor
4242
Getriebetransmission
4444
SchaltkupplungClutch
4646
TreibradDriving wheel
4848
ZahnriemenTiming belt
5050
Zahnradgear
5252
Wellewave
5454
SicherungsvorrichtungSafety device
5656
L-förmige SchieneL-shaped rail
5858
SicherungsrolleSecurity roller
6060
Innenseiteinside
6262
SchwenkachseSwivel axis
6464
Auslegerboom
6666
Hebellever
6868
KoppelgliedCoupling link
7070
Spindelspindle
7272
HülseSleeve
7474
HandkurbelHand crank
7676
SchleifbandSanding belt
7878
KontaktrolleContact role
8080
FührungsrolleLeadership role
8282
FührungsrolleLeadership role
8484
AntriebsmotorDrive motor
8686
AntriebsrolleDrive roller
8888
Schlittencarriage
9090
schwimmende Lagerungfloating storage
9292
Gehäusecasing
9494
BandspannvorrichtungBelt tensioning device
9696
Kolben/Zylinder-AggregatPiston / cylinder unit
9898
Leitungmanagement
100100
Leitungmanagement
102102
Fluid-VorrichtungFluid device
104104
LängsführungLongitudinal guidance
106106
LängsführungLongitudinal guidance
108108
Achseaxis
110110
Kolben/Zylinder-AggregatPiston / cylinder unit
112112
Kolben/Zylinder-AggregatPiston / cylinder unit
114114
VerbindungsleitungConnecting line
116116
VerbindungsleitungConnecting line
118118
Leitungmanagement
120120
Leitungmanagement
122122
RichtvorrichtungStraightening device
124124
GewindestiftGrub screw
126126
KontaktflächeContact area
128128
SchutzahdeckungProtection cover

Claims (14)

  1. Grinding apparatus for grinding a cylindrical or spherical surface of a roller, particularly a roller in a paper-making machine, having a frame (6) which is movable on rollers (8) and on which a grinding machine (18) adapted to be driven by a motor (84) is mounted, characterised in that the rollers (8) are constructed so as to set the frame (6) down on a doctor blade (10) or on a rail (56) replacing the doctor blade (10) of a scraping device (2) associated with the roller (4), the frame (6) having a support roller (14) mounted on an adjustable holder (12) for resting laterally on a carrier (16) for the doctor blade (10).
  2. Grinding apparatus according to claim 1, characterised in that the holder (12) has at least one arm (20, 22) mounted on the frame (6), this arm being directed transversely with respect to the plane of the rollers (8), whilst on this arm (20, 22), via a double clamping member (24), a rod (28) is mounted which extends transversely with respect to the arm (20, 22) and at its lower end carries the support roller (14) the plane of which extends substantially transversely of the plane containing the rollers (8).
  3. Grinding apparatus according to claim 1 or 2, characterised in that the support roller (14) is mounted halfway along the frame (6).
  4. Grinding apparatus according to one of claims 1 to 3, characterised in that at least one roller (8) is drivable by a motor (40), the connection between the motor (40) and roller (8) preferably being adapted to be switched on and off by means of a switching coupling (44).
  5. Grinding apparatus according to one of claims 1 to 4, characterised in that it has a rail (56) of L-shaped cross section which can be exchanged for the doctor blade (10) of the scraping device (2) of the roller (4), the rollers (8) having associated securing rollers (58) which can be pivoted inwards towards the inside (60) of the L-shaped rail (56).
  6. Grinding apparatus according to one of claims 1 to 5, characterised in that the frame (6) and the grinding apparatus (18) are designed to be connectable at both ends alternately.
  7. Grinding apparatus according to one of claims 1 to 6, characterised in that the grinding apparatus (18) is constructed as a belt grinding apparatus.
  8. Grinding apparatus according to claim 7, characterised in that the belt grinding apparatus (18) has a floating contact roller (78) having, on both sides, associated guide rollers (80, 92) for the grinding belt (76).
  9. Grinding apparatus according to claim 8, characterised in that the spindle (108) of the contact roller (78) is mounted in longitudinal guides (104, 106) which are directed perpendicularly to the roller (4) which is to be machined, the spindle (108) preferably being resiliently supported on both sides of the contact roller (78).
  10. Grinding apparatus according to claim 9, characterised in that the spindle (108) of the contact roller (78) is supported on both sides on piston/cylinder assemblies (110, 112) the corresponding pressure chambers of which are connected to one another by a line (114, 116).
  11. Grinding apparatus according to claim 10, characterised in that the piston/cylinder assemblies (110, 112) are connected to a fluid device (102) and are constructed so as to apply the contact roller (78) to the roller (4) which is to be machined.
  12. Grinding apparatus according to one of claims 7 to 11, characterised in that the belt grinding apparatus (18) has a drive motor (84), arranged on a displaceably mounted carriage (88), with a drive roller (86) for the grinding belt (76), the drive motor (84) being connected to a belt tensioning device (94).
  13. Grinding apparatus according to claims 11 and 12, characterised in that the belt tensioning device (94) has a piston/cylinder assembly (96) co-operating with the carriage (88) of the drive motor (84), this assembly (96) co-operating via the fluid device (102) with the piston/cylinder assemblies (110, 112) of the contact roller (78) so that the prestressing force remains substantially constant throughout the application of the contact roller (78) and/or the machining.
  14. Grinding apparatus according to one of claims 1 to 13, characterised in that the grinding apparatus (18) has a straightening device (122) for aligning the grinding member relative to the roller (4) during the process of positioning against the roller (4).
EP92912588A 1991-07-31 1992-06-30 Grinder for grinding a cylindrical or spherical surface of a roll, especially a paper machine roll Expired - Lifetime EP0551457B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH229591 1991-07-31
CH2295/91 1991-07-31
PCT/CH1992/000131 WO1993002834A1 (en) 1991-07-31 1992-06-30 Grinder for grinding a cylindrical or spherical surface of a roll, especially a paper machine roll

Publications (2)

Publication Number Publication Date
EP0551457A1 EP0551457A1 (en) 1993-07-21
EP0551457B1 true EP0551457B1 (en) 1995-08-09

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US (1) US5394653A (en)
EP (1) EP0551457B1 (en)
JP (1) JP3138870B2 (en)
KR (1) KR100229675B1 (en)
CN (1) CN1066378C (en)
AT (1) ATE126115T1 (en)
CA (1) CA2092995C (en)
DE (1) DE59203229D1 (en)
ES (1) ES2078052T3 (en)
TW (1) TW201715B (en)
WO (1) WO1993002834A1 (en)

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CN111687724A (en) * 2020-06-22 2020-09-22 张皖龙 Method for manufacturing wood tenon connecting structure

Also Published As

Publication number Publication date
EP0551457A1 (en) 1993-07-21
KR930702119A (en) 1993-09-08
DE59203229D1 (en) 1995-09-14
ATE126115T1 (en) 1995-08-15
US5394653A (en) 1995-03-07
CN1069922A (en) 1993-03-17
JP3138870B2 (en) 2001-02-26
CA2092995A1 (en) 1993-02-01
JPH06502592A (en) 1994-03-24
CN1066378C (en) 2001-05-30
WO1993002834A1 (en) 1993-02-18
CA2092995C (en) 2003-10-14
TW201715B (en) 1993-03-11
KR100229675B1 (en) 1999-11-15
ES2078052T3 (en) 1995-12-01

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