EP0359304B1 - Method and apparatus for the copy grinding of cylindrical or spherical surfaces - Google Patents
Method and apparatus for the copy grinding of cylindrical or spherical surfaces Download PDFInfo
- Publication number
- EP0359304B1 EP0359304B1 EP89202156A EP89202156A EP0359304B1 EP 0359304 B1 EP0359304 B1 EP 0359304B1 EP 89202156 A EP89202156 A EP 89202156A EP 89202156 A EP89202156 A EP 89202156A EP 0359304 B1 EP0359304 B1 EP 0359304B1
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- European Patent Office
- Prior art keywords
- grinding
- belt
- machined
- feed
- phase
- 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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Classifications
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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
- 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
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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
- B24B17/00—Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor
- B24B17/02—Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor involving mechanical transmission means only
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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
- B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
Definitions
- the invention relates to a method for copy grinding a cylindrical or spherical surface according to the preamble of claim 1 and to a belt grinder for carrying out the method according to the preamble of claim 2.
- a method and a belt grinder of the type mentioned are known from DE-OS 36 39 264. With this belt grinder there is always a rigid connection between the belt grinder and the copying template, so that the surface to be machined is ground in rigid settings.
- the so-called coating which consists of various substances such as resin, oil, paint residues and the like. This surface layer must be removed before the cylinder surfaces are actually processed.
- they are brought to operating condition, ie a certain temperature (for example 150 ° - 170 ° C), a certain pressure (for example 8 bar) and a certain number of revolutions.
- the highest unevenness is now removed, so that after the first pass, bare spots alternate with those on which the surface layer, the so-called coating, is still present.
- the bare layers radiate less heat than the coated areas, so that the bare areas have a higher temperature than the coated areas. This leads to uneven thermal expansion machining surface, which ultimately leads to inaccuracies, so-called holes, in the machined surface.
- the object of the invention is to design a method and a belt grinder of the type mentioned at the outset in such a way that the disadvantages mentioned are avoided.
- the feed slide can and so that the belt grinding device is brought into contact with the surface to be machined in such a way that the driver can oscillate around the play X between the stops.
- the belt grinding device follows the entire contour of the surface evenly and thus the surface layer, ie the coating, is evenly removed over the entire surface to be processed. Individual bare spots and thus different thermal expansion are avoided.
- the direction of action of the pretensioner is used for shape grinding, i.e. Copy grinding according to the copy template, vice versa, so that the feed carriage is biased against the feed direction, i.e. the driver is biased against the stop of the adjusting device, which ensures a rigid connection between the copy template and the belt grinding device when the feed carriage is delivered to the surface to be processed.
- shape grinding can be carried out in a known manner.
- the new process and the new belt grinder enable a higher accuracy of the surface to be machined, but also shorter grinding times with less material removal and thus a longer service life of the cylinder to be machined as well as a saving of grinding belts.
- a development according to claim 5 is particularly expedient since the heating plate prevents the carrier from heating up, so that the carrier does not have to be brought to the operating temperature of the surface to be machined beforehand. On the one hand, this reduces the processing times due to the absence of warming up, and on the other hand increases the accuracy of the processing.
- Figures 1 and 2 show a machine frame 9, on which a console 2 for holding a carrier 4 arranged on a base plate 3 is provided.
- a guide track 7 for support rollers 8 arranged on a longitudinal slide 19 and on the other hand a copying template 10.
- the copying template 10 rests on supports 11, which are in turn mounted in receptacles 12, which can be adjusted on both sides by means of adjusting screws 13 (only the screw axes are indicated) to the desired nominal dimension of the surface 45 ′ to be machined, of a cylinder 45 with the radius R ( see DE-OS 36 39 264).
- the carrier 4 is shielded from the surface to be machined 45 'of the cylinder 45 by a heat insulation plate 5 arranged on holders 6.
- the longitudinal slide 19 is supported on the one hand by means of support rollers 8 on the guide track 7 and on the other hand by means of guide bushings 20 on the copying template 10.
- the longitudinal slide is movable along the carrier 4.
- a feed slide 18 is slidably mounted in the feed direction.
- the feed carriage 18 carries a belt grinding device via a holder 26 and a tensioning device 27.
- the latter contains a grinding belt 21 guided over a drive roller 22 and a contact roller 23.
- the guidance of the belt grinding device by means of the guide bushes 20 on the copying template 10 ensures that the contact roller 23 of the belt grinding device is tangential to the surface 45 'of the cylinder 45 in any position, so that a smooth surface can be ground without scoring.
- the tensioning device 27 with the adjusting screw 28 and the tensioning cylinder 27 ' is used for tensioning the grinding belt 21.
- the contact roller 23 guides the grinding belt 21 to the surface 45' to be machined.
- the grinding belt 21 is driven by means of the drive roller 22, which is coupled to a drive motor 24.
- the belt grinder is provided with a protective cover 25.
- a suction device 29 serves to suck off the abrasion material at the grinding point.
- the feed of the belt grinding device radially to the surface to be machined 45 'of the cylinder 45 takes place via the feed slide 18 by means of an adjusting device 30.
- the threaded spindle is mounted in a bearing 33, for example made of ball bearings, which is arranged in an intermediate piece 38, which is connected to the feed slide via a screw 41 18 is connected.
- a clamping ring 34 serves to fasten the bearing 33 to the intermediate piece 38.
- the threaded spindle 31 contains a stop ring 32 secured by means of a pin 32 and a further screwed-on stop ring 37 with a slot 37 'for attaching a tool. Between the stop rings 32, 37, the bearing 33 can be displaced by the total play X. At the spindle end 31 'a disk 39 is fixed by means of a pin 31 ", which has an eccentrically arranged handle 39'.
- the disk 39 carries a scale ring 35 which is rotatably arranged on the disk 39 and is secured by means of a rubber ring 36 against unintentional displacement
- the scale ring 35 overlaps the intermediate piece 38 and interacts with a scale, not shown there, by means of the scale ring 35.
- the position of the bearing 33 between the stop rings 32 and 37, which is desired during the pre-grinding, can be set, as will be explained below.
- the pretensioning device 43 is supported on the feed slide 18 via a holder 42.
- the pretensioning device can be designed as a hydraulic or pneumatic piston / cylinder unit or, if appropriate, also as a spring device.
- the control of the pretensioning device is such that it exerts a pretension in the direction of the surface to be ground 45 'during pre-grinding, so that the bearing 33 serving as a driver is in contact with the stop ring 32 which faces the contact roller 23.
- the feed carriage is in this setting of the pretensioner against the surface to be ground 45 'of the cylinder 45 and thus the grinding belt 21 is brought into contact by means of the contact roller 23.
- the stop ring 32 is lifted from the bearing 33.
- the size of the lift-off and thus the position of the bearing between the stop rings 32, 37 can be read off by means of the scale ring 35 and the scale attached to the intermediate piece 38.
- the position is expediently set such that the distance, ie the play X1 between the stop ring 32 and the bearing 33 is equal to the distance, ie the play X2 between the stop ring 37 and the bearing 33.
- the sum of the games X1 and X2 results in the total game X.
- This floating guidance of the belt grinding device enables the contact roller 23 to evade in both directions of the infeed direction.
- the pretensioning device 43 is switched over, so that the feed carriage 18 is biased opposite to the surface 45 'to be treated, ie the bearing 33 is against the stop ring 37 facing away from the contact roller 23 biased, as shown in Figure 3.
- the game X2 between the bearing 33 and the stop ring 37 is zero.
- the guide bushing 20 thus transmits the guide along the copying template 10 without any possibility of evasion, ie rigidly and thus without play to the feed carriage 18 and thus into the contact roller 23.
- the belt sander operates as follows.
- a coarse grinding belt 21 is first placed on the belt grinding device.
- the pretensioning device 43 is then switched over such that the feed carriage 18 is pretensioned against the stop ring 32 of the adjusting device 30 facing the contact roller 23.
- the cylinder to be treated is preheated to operating temperature, for example by means of steam, at 150 ° to 170 ° C. and placed under an internal pressure of, for example, 8 bar and brought into circulation.
- the belt grinder prepared above will by means of the adjusting device 30 by turning the handle 39 'against the surface to be machined 45' until the grinding belt 21 is in contact with the surface on the contact roller.
- the belt grinder is moved back and forth along the surface 45 'of the cylinder in several passes, if necessary after the belt 21 has been replaced, until the surface layer, the so-called coating, has been removed and there is a rough pre-grinding of the surface.
- the belt grinding device is guided in a floating manner and adapts to the surface structure of the surface to be treated.
- a finer grinding belt is clamped on the belt grinding device for shape grinding, ie copy grinding according to the copying template, and the pretensioning device 43 is switched over so that the bearing 33 abuts against the rear stop ring 37.
- this is fed in a known manner via the feed carriage 18 by means of the adjusting device 30 to the desired grinding depth and guided back and forth according to the copying template 10 along the surface 45 to be machined.
- the grinding process is repeated in several passes, the required infeed depths and, if necessary, after the grinding belts 21 have been replaced, until the desired surface profile and the desired surface quality are achieved.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Kopierschleifen einer zylindrischen oder sphärischen Oberfläche gemäss Oberbegriff des Anspruches 1 sowie ein Bandschleifgerät zur Durchführung des Verfahrens gemäss Oberbegriff des Anspruches 2.The invention relates to a method for copy grinding a cylindrical or spherical surface according to the preamble of
Ein Verfahren sowie ein Bandschleifgerät der eingangs genannten Art sind aus der DE-OS 36 39 264 bekannt. Bei diesem Bandschleifgerät ist stets eine starre Verbindung zwischen der Bandschleifvorrichtung und der Kopierschablone gegeben, so dass das Abschleifen der zu bearbeitenden Oberfläche in starren Einstellungen erfolgt. Beim Regenerieren von Zylindern für Papiermaschinen besteht das Problem, dass solche Zylinder nach längerem Gebrauch mit einer Oberflächenschicht, dem sogenannten Coating, versehen sind, die aus verschiedenen Stoffen, wie Harz-, Öl-, Farbresten und dergleichen besteht. Diese Oberflächenschicht muss vor dem eigentlichen Bearbeiten der Zylinder-Oberflächen entfernt werden. Zum Regenerieren solcher Zylinder werden diese auf Betriebsbedingung, d.h. eine bestimmte Temperatur (beispielsweise 150° - 170° C), einen bestimmten Druck (beispielsweise 8 bar) und eine bestimmte Umdrehungszahl gebracht. Mittels des bisher bekannten starren Bandschleifgerätes werden nun zunächst die höchsten Unebenheiten abgetragen, so dass nach den ersten Durchgängen sich blanke Stellen mit solchen abwechseln, an denen die Oberflächenschicht, das sogenannte Coating noch vorhanden ist. Die blanken Schichten strahlen weniger Wärme ab als die beschichteten Stellen, so dass die blanken Stellen eine höhere Temperatur aufweisen als die beschichteten Stellen. Dies führt zu ungleichmässigen Wärmeausdehnungen der zu bearbeitenden Oberfläche, was schliesslich zu Ungenauigkeiten, sogenannten Löchern, in der bearbeiteten Oberfläche führt.A method and a belt grinder of the type mentioned are known from DE-OS 36 39 264. With this belt grinder there is always a rigid connection between the belt grinder and the copying template, so that the surface to be machined is ground in rigid settings. When regenerating cylinders for paper machines, there is the problem that after prolonged use, such cylinders are provided with a surface layer, the so-called coating, which consists of various substances such as resin, oil, paint residues and the like. This surface layer must be removed before the cylinder surfaces are actually processed. In order to regenerate such cylinders, they are brought to operating condition, ie a certain temperature (for example 150 ° - 170 ° C), a certain pressure (for example 8 bar) and a certain number of revolutions. By means of the previously known rigid belt grinder, the highest unevenness is now removed, so that after the first pass, bare spots alternate with those on which the surface layer, the so-called coating, is still present. The bare layers radiate less heat than the coated areas, so that the bare areas have a higher temperature than the coated areas. This leads to uneven thermal expansion machining surface, which ultimately leads to inaccuracies, so-called holes, in the machined surface.
Aufgabe der Erfindung ist es, ein Verfahren und ein Bandschleifgerät der eingangs genannten Art so auszubilden, dass die erwähnten Nachteile vermieden werden.The object of the invention is to design a method and a belt grinder of the type mentioned at the outset in such a way that the disadvantages mentioned are avoided.
Die Aufgabe wird erfindungsgemäss gelöst:
- a) bei dem eingangs genannten Verfahren durch die kennzeichenden Merkmale des
Anspruches 1; und - b) bei dem eingangs genannten Bandschleifgerät durch die kennzeichnenden Merkmale des
Anspruches 2.
- a) in the aforementioned method by the characterizing features of
claim 1; and - b) in the belt grinder mentioned at the outset by the characterizing features of
claim 2.
Dadurch, dass zwischen dem mit der Kopierschablone verbundenen Längsschlitten und dem mit der Bandschleifvorrichtung verbundenen Zustellschlitten ein Spiel in Zustellrichtung des Zustellschlittens vorgesehen ist, und dadurch, dass der Zustellschlitten beim Vorschleifen relativ zum Längsschlitten in Richtung auf die zu bearbeitende Oberfläche vorgespannt ist, kann der Zustellschlitten und damit die Bandschleifvorrichtung an der zu bearbeitenden Oberfläche zur Anlage gebracht werden und zwar derart, dass der Mitnehmer um das Spiel X zwischen den Anschlägen pendeln kann. Dadurch ergibt sich eine schwimmende Führung der Bandschleifvorrichtung, so dass sich diese während des Vorschleifens den Unebenheiten, d.h. Höhen und Tiefen, der zu bearbeitenden Oberfläche anpassen kann. Dies hat zur Folge, dass beim Vorschleifen die Bandschleifvorrichtung der gesamten Kontur der Oberfläche gleichmässig folgt und somit die Oberflächenschicht, d.h. das Coating über die ganze zu bearbeitende Oberfläche gleichmässig abträgt. Dadurch werden einzelne blanke Stellen und damit auch eine unterschiedliche Wärmeausdehnung vermieden.Due to the fact that there is play in the feed direction of the feed slide between the longitudinal slide connected to the copying template and the feed slide connected to the belt grinding device, and because the feed slide is pre-tensioned relative to the longitudinal slide in the direction of the surface to be machined, the feed slide can and so that the belt grinding device is brought into contact with the surface to be machined in such a way that the driver can oscillate around the play X between the stops. This results in a floating guidance of the belt grinding device so that it can adapt to the unevenness, ie heights and depths, of the surface to be machined during the pre-grinding. The result of this is that during pre-grinding the belt grinding device follows the entire contour of the surface evenly and thus the surface layer, ie the coating, is evenly removed over the entire surface to be processed. Individual bare spots and thus different thermal expansion are avoided.
Nach dem Vorschleifen wird die Wirkrichtung der Vorspannvorrichtung zum Formschleifen, d.h. Kopierschleifen nach der Kopierschablone, umgekehrt, so dass der Zustellschlitten entgegen der Zustellrichtung vorgespannt ist, d.h., der Mitnehmer wird gegen denen Anschlag der Justiereinrichtung vorgespannt, der beim Zustellen des Zustellschlittens an die zu bearbeitende Oberfläche eine starre Verbindung zwischen der Kopierschablone und der Bandschleifvorrichtung gewährleistet. Das Formschleifen kann in bekannter Weise durchgeführt werden.After pre-grinding, the direction of action of the pretensioner is used for shape grinding, i.e. Copy grinding according to the copy template, vice versa, so that the feed carriage is biased against the feed direction, i.e. the driver is biased against the stop of the adjusting device, which ensures a rigid connection between the copy template and the belt grinding device when the feed carriage is delivered to the surface to be processed. The shape grinding can be carried out in a known manner.
Das neue Verfahren und das neue Bandschleifgerät ermöglichen eine höhere Genauigkeit der zu bearbeitenden Oberfläche, aber auch kürzere Schleifzeiten mit geringerer Materialabtragung und damit eine längere Lebensdauer des zu bearbeitenden Zylinders sowie eine Einsparung von Schleifbändern.The new process and the new belt grinder enable a higher accuracy of the surface to be machined, but also shorter grinding times with less material removal and thus a longer service life of the cylinder to be machined as well as a saving of grinding belts.
Vorteilhafte Ausgestaltungen des Bandschleifgerätes sind in den Ansprüchen 3 bis 5 umschrieben.Advantageous embodiments of the belt grinder are described in
Eine besonders zweckmässige Ausgestaltung des Bandschleifgerätes beschreibt Anspruch 3.A particularly expedient embodiment of the belt grinder is described in
Für die Ausgestaltung der Vorspannvorrichtung ergeben sich verschiedene, beispielsweise in Anspruch 4 genannte Möglichkeiten.There are various possibilities for the design of the pretensioning device, for example mentioned in
Besonders zweckmässig ist eine Weiterbildung nach Anspruch 5, da die Wärmeplatte ein Aufheizen des Trägers verhindert, so dass dieser nicht vorgängig auf die Betriebstemperatur der zu bearbeitenden Oberfläche gebracht werden muss. Dadurch verringern sich einerseits die Bearbeitungszeiten durch das Wegfallen des Aufwärmens und andererseits erhöht sich die Genauigkeit der Bearbeitung.A development according to
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen näher dargestellt, dabei zeigen:
Figur 1 ein Bandschleifgerät in Ansicht quer zur Längsverschiebung;Figur 2 das Bandschleifgerät derFigur 1 in Draufsicht;Figur 3 eine Justiereinrichtung im Längsschnitt und in Formschleif-Stellung; undFigur 4 die Justiereinrichtung derFigur 3 in Vorschleif-Stellung.
- Figure 1 shows a belt grinder in a view transverse to the longitudinal displacement;
- Figure 2 shows the belt sander of Figure 1 in plan view;
- Figure 3 shows an adjusting device in longitudinal section and in the form grinding position; and
- Figure 4 shows the adjusting device of Figure 3 in the pre-grinding position.
Die Figuren 1 und 2 zeigen ein Maschinengestell 9, an welchem eine Konsole 2 zur Halterung eines auf einer Grundplatte 3 angeordneten Trägers 4 vorhanden ist. Auf dem Träger 4 sind zum einen eine Führungsbahn 7 für an einem Längsschlitten 19 angeordnete Stützrollen 8 und zum anderen eine Kopierschablone 10 angeordnet. Die Kopierschablone 10 ruht auf Abstützungen 11, die wiederum in Aufnahmen 12 gelagert sind, die beidseitig mittels Einstellschrauben 13 (wobei nur die Schraubenachsen angedeutet sind) auf das gewünschte Sollmass der zu bearbeitenden Oberfläche 45′ eines Zylinders 45 mit dem Radius R eingestellt werden kann (vergl. hierzu DE-OS 36 39 264). Der Träger 4 ist gegenüber der zu bearbeitenden Oberfläche 45′ des Zylinders 45 durch eine auf Haltern 6 angeordneten Wärmedämmplatte 5 abgeschirmt.Figures 1 and 2 show a
Der Längsschlitten 19 stützt sich einerseits mittels Stützrollen 8 auf der Führungsbahn 7 und andererseits mittels Führungsbuchsen 20 auf der Kopierschablone 10 ab. Der Längsschlitten ist längs des Trägers 4 verfahrbar. Hierzu dient ein Antriebsmotor 14 mit einem Getriebe 15, welches ein Zahnrad 16 antreibt, das mit einer Zahnstange 16′ kämmt, die nahe der Führungsbahn 7 am Träger angeordnet ist. Auf dem Längsschlitten 19 ist ein Zustellschlitten 18 in Zustellrichtung verschieblich gelagert. Der Zustellschlitten 18 trägt über einen Halter 26 und eine Spanneinrichtung 27 eine Bandschleifvorrichtung. Letztere enthält ein über eine Antriebsrolle 22 und eine Kontaktrolle 23 geführtes Schleifband 21.The
Die Führung der Bandschleifvorrichtung mittels der Führungsbuchsen 20 an der Kopierschablone 10 stellt sicher, dass die Kontaktrolle 23 der Bandschleifvorrichtung in jeder Position tangential zur Oberfläche 45′ des Zylinders 45 steht, so dass eine glatte Oberfläche ohne Riefen geschliffen werden kann. Die Spanneinrichtung 27 mit der Einstellschraube 28 und dem Spannzylinder 27′ dient zum Spannen des Schleifbandes 21. Die Kontaktrolle 23 führt das Schleifband 21 an der zu bearbeitenden Oberfläche 45′. Angetrieben wird das Schleifband 21 mittels der Antriebsrolle 22, die mit einem Antriebsmotor 24 gekoppelt ist. Die Bandschleifvorrichtung ist mit einer Schutzabdeckung 25 versehen. Eine Absaugeinrichtung 29 dient zum Absaugen des Abriebmaterials an der Schleifstelle.The guidance of the belt grinding device by means of the
Die Zustellung der Bandschleifvorrichtung radial an die zu bearbeitende Oberfläche 45′ des Zylinders 45 erfolgt über den Zustellschlitten 18 mittels einer Justiereinrichtung 30. Diese enthält eine Gewindespindel 31, die einerseits in einem Gewindeglied 40 gelagert ist, welches an einer Grundplatte 17 angeordnet ist, die einerseits mit dem Längsschlitten 19 starr verbunden ist und auf der andererseits der Zustellschlitten 18 in Zustellrichtung verschiebbar geführt ist. Weiter ist die Gewindespindel in einem Lager 33, beispielsweise aus Kugellagern, gelagert, das in einem Zwischenstück 38 angeordnet ist, welches über eine Schraube 41 mit dem Zustellschlitten 18 verbunden ist. Ein Spannring 34 dient zur Befestigung des Lagers 33 am Zwischenstück 38.The feed of the belt grinding device radially to the surface to be machined 45 'of the
Die Gewindespindel 31 enthält einen mittels eines Stiftes 32′ gesicherten Anschlagring 32 sowie einen weiteren, aufgeschraubten Anschlagring 37 mit einem Schlitz 37′ zum Ansetzen eines Werkzeuges. Zwischen den Anschlagringen 32,37 ist das Lager 33 um das Gesamtspiel X verschiebbar. Am Spindelende 31′ ist eine Scheibe 39 mittels eines Stiftes 31" befestigt, die einen exzentrisch angeordneten Handgriff 39′ aufweist. Die Scheibe 39 trägt einen Skalenring 35, der an der Scheibe 39 drehbar angeordnet ist und mittels eines Gummiringes 36 gegen unbeabsichtigtes Verschieben gesichert ist. Der Skalenring 35 übergreift das Zwischenstück 38 und wirkt mit einer dort vorhandenen, nicht näher dargestellten Skala zusammen. Mittels des Skalenringes 35 kann die beim Vorschleifen gewünschte Lage des Lagers 33 zwischen den Anschlagringen 32 und 37 eingestellt werden, wie nachfolgend noch erläutert wird.The threaded
Zwischen dem Zustellschlitten 18 und dem Längsschlitten 19 ist eine Vorspannvorrichtung 43 vorhanden, die sich über einen Halter 42 am Zustellschlitten 18 abstützt. Die Vorspannvorrichtung kann als hydraulisches oder pneumatisches Kolben/Zylinder-Aggregat ausgebildet sein oder gegebenenfalls auch als Federvorrichtung. Die Steuerung der Vorspannvorrichtung erfolgt so, dass sie beim Vorschleifen eine Vorspannung in Richtung auf die zu schleifende Oberfläche 45′ ausübt, so dass das als Mitnehmer dienende Lager 33 an dem Anschlagring 32 ansteht, der der Kontaktrolle 23 zugewandt ist. Beim Vorschleifen wird der Zustellschlitten in dieser Einstellung der Vorspannvorrichtung gegen die zu schleifende Oberfläche 45′ des Zylinders 45 zugestellt und damit das Schleifband 21 mittels der Kontaktrolle 23 zur Anlage gebracht. Durch Weiterdrehen der Gewindespindel 31 mittels des Handgriffes 39′ wird der Anschlagring 32 vom Lager 33 abgehoben. Mittels des Skalenringes 35 und der am Zwischenstück 38 angebrachten Skala kann die Grösse des Abhebens und damit die Lage des Lagers zwischen den Anschlagringen 32,37 abgelesen werden. Zweckmässigerweise stellt man die Lage so ein, dass der Abstand, d.h. das Spiel X1 zwischen dem Anschlagring 32 und dem Lager 33 gleich dem Abstand, d.h. dem Spiel X2 zwischen dem Anschlagring 37 und dem Lager 33 ist. Die Summe der Spiele X1 und X2 ergeben das Gesamtspiel X. Diese schwimmende Führung der Bandschleifvorrichtung ermöglicht ein Ausweichen der Kontaktrolle 23 in beiden Richtungen der Zustellrichtung. Für das Formschleifen, bei dem die Kontaktrolle 23 entsprechend der Kopierschablone 10 geführt werden muss, wird die Vorspannvorrichtung 43 umgeschaltet, so dass der Zustellschlitten 18 entgegengesetzt zur behandelnden Oberfläche 45′ vorgespannt wird, d.h. das Lager 33 wird gegen den der Kontaktrolle 23 abgewandten Anschlagring 37 vorgespannt, wie dies in Figur 3 gezeigt ist. Das Spiel X2 zwischen dem Lager 33 und dem Anschlagring 37 ist gleich Null. Damit überträgt die Führungsbuchse 20 die Führung längs der Kopierschablone 10 ohne Ausweichmöglichkeit, d.h. starr und damit spielfrei an den Zustellschlitten 18 und damit in die Kontaktrolle 23.Between the
Die Betriebsweise des Bandschleifgerätes ist wie folgt.The belt sander operates as follows.
Zum Vorschleifen einer zu bearbeitenden Oberfläche 45′ des Zylinders 45 wird auf die Bandschleifvorrichtung zunächst ein grobes Schleifband 21 aufgelegt. Dann wird die Vorspannvorrichtung 43 so umgeschaltet, dass der Zustellschlitten 18 gegen den der Kontaktrolle 23 zugewandten Anschlagring 32 der Justiereinrichtung 30 vorgespannt ist. Der zu behandelnde Zylinder wird auf Betriebstemperatur, beispielsweise mittels Dampf auf 150° bis 170° C vorgeheizt und unter einen Innendruck von beispielsweise 8 bar gesetzt und in Umlauf gebracht. Das vorstehend vorbereitete Bandschleifgerät wird mittels der Justiereinrichtung 30 durch Drehen am Handgriff 39′ gegen die zu bearbeitende Oberfläche 45′ zugestellt, bis das Schleifband 21 über die Kontaktrolle an der Oberfläche ansteht. Dann wird die Gewindespindel mittels des Handgriffes weiter zugestellt, beispielsweise durch weitere zwei Umdrehungen, bis am Skalenring 35 und dem Zwischenstück 38 abgelesen werden kann, dass sich das Lager 33 etwa in der Mitte zwischen den Anschlagringen 32 und 37 befinden, d.h. beidseits das gleiche Spiel von X1 = X2 = X/2 gegeben ist. Das Bandschleifgerät wird in mehreren Durchgängen gegebenenfalls nach zwischenzeitlichem Auswechseln des Schleifbandes 21 solange längs der Oberfläche 45′ des Zylinders hin- und herbewegt, bis die Oberflächenschicht, das sogenannte Coating, entfernt ist und ein grober Vorschliff der Oberfläche gegeben ist. In dieser Vorschleif-Phase ist die Bandschleifvorrichtung schwimmend geführt und passt sich der Oberflächenstruktur der zu behandelnden Oberfläche an.For pre-grinding a surface to be machined 45 'of the
Nach Beendigung des Vorschleifens wird zum Formschleifen, d.h. Kopierschleifen nach der Kopierschablone, ein feineres Schleifband an der Bandschleifvorrichtung eingespannt und die Vorspannvorrichtung 43 umgeschaltet, so dass das Lager 33 gegen den hinteren Anschlagring 37 ansteht. Nach Einschalten der Bandschleifvorrichtung wird diese in bekannter Weise über den Zustellschlitten 18 mittels der Justiereinrichtung 30 auf die gewünschte Schleiftiefe zugestellt und entsprechend der Kopierschablone 10 längs der zu bearbeitenden Oberfläche 45′ hin- und hergeführt. Der Schleifvorgang wird in mehreren Durchgängen, den erforderlichen Zustelltiefen und gegebenenfalls nach Auswechseln der Schleifbänder 21 so oft wiederholt, bis das gewünschte Oberflächenprofil und die gewünschte Oberflächengüte erreicht sind.After the pre-grinding is finished, a finer grinding belt is clamped on the belt grinding device for shape grinding, ie copy grinding according to the copying template, and the
- 1 Bandschleifgerät1 belt sander
- 2 Konsole2 console
- 3 Grundplatte3 base plate
- 4 Träger4 carriers
- 5 Wärmedämmplatte5 thermal insulation panel
- 6 Halter6 holders
- 7 Führungsbahn7 guideway
- 8 Stützrolle8 support roller
- 9 Maschinengestell9 machine frame
- 10 Kopierschablone10 template
- 11 Abstützung11 support
- 12 Aufnahme12 recording
- 13 Einstellschraube13 adjusting screw
- 14 Antriebsmotor14 drive motor
- 15 Getriebe15 gears
- 16 Zahnrad16 gear
- 16′ Zahnstange16 ′ rack
- 17 Grundplatte17 base plate
- 18 Zustellschlitten18 delivery slides
- 19 Längsschlitten19 longitudinal slides
- 20 Führungsbuchse20 guide bush
- 21 Schleifband21 sanding belt
- 22 Antriebsrolle22 drive roller
- 23 Kontaktrolle23 Contact role
- 24 Antriebsmotor24 drive motor
- 25 Schutzabdeckung25 protective cover
- 26 Halter26 holder
- 27 Spanneinrichtung27 tensioning device
- 27′ Spannzylinder27 ′ clamping cylinder
- 28 Einstellschraube28 adjusting screw
- 29 Absaugeinrichtung29 suction device
- 30 Justiereinrichtung30 adjustment device
- 31 Gewindespindel31 threaded spindle
- 31′ Spindelende31 ′ spindle end
- 31˝ Befestigungsstift31˝ mounting pin
- 32 Anschlagring32 stop ring
- 32′ Befestigungsstift32 ′ fastening pin
- 33 Lager33 bearings
- 34 Mitnehmer34 drivers
- 35 Skalenring35 scale ring
- 36 Gummiring36 rubber ring
- 37 Anschlagring37 stop ring
- 37′ Schlitz37 ′ slot
- 38 Zwischenstück38 intermediate piece
- 39 Scheibe39 disc
- 39′ Handgriff39 ′ handle
- 40 Gewindeglied40 threaded link
- 41 Befestigungsschraube41 fastening screw
- 42 Halter42 holder
- 43 Vorspannvorrichtung43 pretensioning device
- 45 Zylinder45 cylinders
- 45′ Zylinder-Aussenoberfläche45 ′ cylinder outer surface
- X GesamtspielX total game
- X1 Spiel zwischen Anschlagring und LagerX1 Play between the stop ring and the bearing
- X2 Spiel zwischen Lager und AnschlagringX2 Play between the bearing and the stop ring
- R Radius des ZylindersR radius of the cylinder
Claims (5)
- Method for the contour grinding of cylindrical and spherical surfaces by means of a belt grinding apparatus, in particular for the regeneration of cylinders (45) for paper machines and shafts, with the following method steps:- the surface (45′) to be machined is brought to operating conditions,- the grinding belt (21) of the belt grinding apparatus, running over a contact roller (23), is brought by means of a drive (22 - 24) to a predetermined speed and guided into a grinding position relative to the surface (45′) to be machined, with a controllable, firm contact being established with the aid of a movable adjusting, device (30),- in a first shaping-grinding phase, the belt grinding apparatus (1) passes with to-and-fro movements in the axial direction parallel to a shaping plate (10) over the entire length of the surface (45′) to be machined,- after each pass there takes place by means of a feed slide (18) with the adjustment device (30), a corresponding feed motion of a contact roller (23),- after the grinding belt (21) has worn it is exchanged, with a further corresponding adjustment of the feed slide (18),- the passes with the corresponding feed movements are repeated, as well as the exchanging of grinding belts (21), until the surface (45′) has the shape determined by the shaping plate (10) in the axial direction and has a precise roundness,- by using progressively finer grinding belts (21), a second shaping-grinding phase is carried out, in which phase there is achieved an exact and correspondingly fine surface (45′) required according to the manufacturing process,characterised in that, in a rough-grinding phase upstream from the first shaping-grinding phase, the grinding belt (21) is pressed in a movable manner under a pre-determined pressure against the surface (45′) to be machined, with play (X) between the shaping plate (10) and the contact roller (23), in such a way that the contact roller (23) can, independently of the shaping plate (10), follow the unevenness of the surface (45′) to be machined, and in that, after a surface layer of the surface (45′) to be machined has been ground away, the pressure ratios on the belt grinding apparatus (1) are changed in such a way that, in the first shaping-grinding phase now following, contact without play results between the shaping plate (10) and the contact roller (30).
- Belt grinding apparatus for carrying out the method according to claim 1, having a carrier (4) arranged alongside the surface (45′) to be ground, having a shaping plate (10) which guides a longitudinal slide (19) which can be moved along the carrier, against which longitudinal slide a feed slide (18) is arranged in a movable manner and so that it can be advanced by means of an adjusting device (30) against the surface (45′) to be machined, with the feed slide (18) carrying a belt grinding device with a contact roller (23) facing the surface (45′) to be machined, characterised in that the adjusting device (3) has, for coupling the feed slide (18) to the longitudinal slide (19), a driver (33, 34) which can be displaced by the play (X) between two limit stops (32, 37) along a sliding body (31) extending in the feed direction of the feed slide (18), there being a pre-stressing device (43) acting in the feed axis between the feed slide (18) and the longitudinal slide (19) and pre-stressing the feed slide (18) during the rough-grinding phase in the direction of the surface (45′) to be machined and in the opposite direction during the shaping-grinding phase.
- Belt grinding apparatus according to claim 2, characterised in that the adjusting device (30) has a threaded spindle forming the sliding body (31) which is supported in a threaded element (40) connected to the longitudinal slide (19) and in a bearing connected to the feed slide (18), the bearing (33) being formed as a driver and being displaceable by the play (X) between two limit stops (32, 37) arranged on the threaded spindle (31).
- Belt grinding apparatus according to claim 2, characterised in that the pre-stressing device (43) is in pneumatic, hydraulic or spring form.
- Belt grinding apparatus according to claim 2, characterised in that the carrier (4) is shielded from the surface (45′) to be machined, by means of a thermal insulation plate (5).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89202156T ATE82895T1 (en) | 1988-09-14 | 1989-08-24 | PROCESS FOR REPRESENTING CYLINDRICAL AND SPHERICAL SURFACES AND DEVICE FOR CARRYING OUT THE PROCESS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3831294A DE3831294A1 (en) | 1988-09-14 | 1988-09-14 | METHOD FOR COPY GRINDING CYLINDRICAL AND SPHERICAL SURFACES, AND DEVICE FOR CARRYING OUT THE METHOD |
DE3831294 | 1988-09-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0359304A2 EP0359304A2 (en) | 1990-03-21 |
EP0359304A3 EP0359304A3 (en) | 1991-01-16 |
EP0359304B1 true EP0359304B1 (en) | 1992-12-02 |
Family
ID=6362959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89202156A Expired - Lifetime EP0359304B1 (en) | 1988-09-14 | 1989-08-24 | Method and apparatus for the copy grinding of cylindrical or spherical surfaces |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0359304B1 (en) |
JP (1) | JP2827169B2 (en) |
AT (1) | ATE82895T1 (en) |
DE (2) | DE3831294A1 (en) |
ES (1) | ES2036333T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109277920A (en) * | 2018-11-28 | 2019-01-29 | 王佳宁 | A kind of intelligent large rack milling robot |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0551457B1 (en) * | 1991-07-31 | 1995-08-09 | Farros Blatter Ag | Grinder for grinding a cylindrical or spherical surface of a roll, especially a paper machine roll |
KR100276091B1 (en) * | 1992-11-25 | 2001-10-22 | 머즈피터 | Devices for grinding cylinder surfaces, especially cylinders of paper machines |
DE4309052A1 (en) * | 1993-03-20 | 1994-09-22 | Schaudt Maschinenbau Gmbh | Belt-grinding machine for working the crank pins of a crankshaft |
DE29704578U1 (en) * | 1997-03-13 | 1997-06-19 | Leybold Systems GmbH, 63450 Hanau | Device for cleaning the coating roller of a vacuum belt coating system |
DE19830254A1 (en) * | 1998-07-07 | 2000-01-13 | Voith Sulzer Papiertech Patent | System for cleaning rollers with elastic mantles at high speed papermaking machines |
DE10065881A1 (en) * | 2000-12-23 | 2002-07-04 | Jaeger Gmbh Roll Service | Device for grinding an outer surface |
TR200605025A1 (en) * | 2006-09-13 | 2007-10-22 | Sunteks Plasti̇k Kağit Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ | Automatic sanding of bobbin and rolic surfaces. |
CN109702583B (en) * | 2019-02-19 | 2020-04-10 | 文华学院 | Optical lens processing device |
CN112828696B (en) * | 2021-01-04 | 2022-12-06 | 江苏煌灿新材料科技有限公司 | Chemical pipeline processing and treating system |
CN114274022A (en) * | 2022-01-20 | 2022-04-05 | 新沂市鹏立机械有限公司 | Metal bar surface polishing machine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE560078C (en) * | 1928-04-03 | 1932-09-28 | Fried Krupp Grusonwerk Akt Ges | Roller mill with grinding device |
US3165865A (en) * | 1962-12-31 | 1965-01-19 | B S Roy & Son Co | Roll grinder |
CH668212A5 (en) * | 1985-11-18 | 1988-12-15 | Blatter Farros Ag | DEVICE FOR COPY GRINDING CYLINDRICAL AND spherical surfaces. |
JPS62181802A (en) * | 1986-02-03 | 1987-08-10 | Matsumoto Masamichi | Grinder |
-
1988
- 1988-09-14 DE DE3831294A patent/DE3831294A1/en not_active Withdrawn
-
1989
- 1989-08-24 AT AT89202156T patent/ATE82895T1/en not_active IP Right Cessation
- 1989-08-24 DE DE8989202156T patent/DE58902881D1/en not_active Expired - Fee Related
- 1989-08-24 EP EP89202156A patent/EP0359304B1/en not_active Expired - Lifetime
- 1989-08-24 ES ES198989202156T patent/ES2036333T3/en not_active Expired - Lifetime
- 1989-09-01 JP JP1224741A patent/JP2827169B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109277920A (en) * | 2018-11-28 | 2019-01-29 | 王佳宁 | A kind of intelligent large rack milling robot |
CN109277920B (en) * | 2018-11-28 | 2020-06-26 | 王佳宁 | Intelligent large-scale rack polishing robot |
Also Published As
Publication number | Publication date |
---|---|
ATE82895T1 (en) | 1992-12-15 |
JP2827169B2 (en) | 1998-11-18 |
DE3831294A1 (en) | 1990-03-15 |
DE58902881D1 (en) | 1993-01-14 |
EP0359304A3 (en) | 1991-01-16 |
ES2036333T3 (en) | 1993-05-16 |
EP0359304A2 (en) | 1990-03-21 |
JPH02116461A (en) | 1990-05-01 |
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