EP2184133B1 - Finishing machine with a stone turning unit - Google Patents
Finishing machine with a stone turning unit Download PDFInfo
- Publication number
- EP2184133B1 EP2184133B1 EP08019311A EP08019311A EP2184133B1 EP 2184133 B1 EP2184133 B1 EP 2184133B1 EP 08019311 A EP08019311 A EP 08019311A EP 08019311 A EP08019311 A EP 08019311A EP 2184133 B1 EP2184133 B1 EP 2184133B1
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- EP
- European Patent Office
- Prior art keywords
- stone
- finishing
- turning unit
- workpiece
- stone turning
- 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 - Fee Related
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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
- B24B35/00—Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high frequency
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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
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/04—Honing machines or devices; Accessories therefor designed for working external surfaces of revolution
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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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
Definitions
- the invention relates to a finishing machine having at least two finishing stones, wherein the finishing stones are mounted on a stone turning unit and wherein the stone turning unit positions one of the finishing stones so that it can be brought into engagement with the workpiece to be machined.
- Finishing machines with several finishing stones are used when the finish machining can not be completed in one processing step, but rather when first finishing with a first finishing stone and even finer finishing done with a second finishing stone. If necessary, more finishing stones can be provided.
- the invention has for its object to provide a finishing machine with a stone turning unit, which overcomes the disadvantages known from the prior art and thus enables a more compact design with simultaneously reduced oscillating masses and lower power requirement.
- finishing machine with at least two finishing stones, wherein the finishing stones are mounted on a stone turning unit and wherein the stone turning unit positions one of the finishing stones, that it can be brought into engagement with the workpiece to be machined, wherein the or the workpieces to be machined are clamped on a workpiece holder and wherein the workpiece holder is driven by a controllable rotary drive, achieved in that the stone turning unit with the rotary drive of the workpiece holder can be coupled.
- the already existing rotary drive the workpiece holder can take on an additional function.
- This function consists in turning the stone turning unit if necessary so far that the respectively desired finishing stone is brought into the processing position. Since the replacement of the finishing stones by turning the stone turning unit, only takes place when the workpiece is not being processed, the rotary drive is not busy in this time interval anyway and can take over the new function of the invention without affecting performance in the machining of the workpiece.
- the rotary drive used according to the invention for driving the stone turning unit does not have to go along with the oscillating movement of the finishing stone and the stone turning unit, so that the stone turn unit according to the invention builds considerably more easily and thus also causes only smaller mass forces if it is set into an oscillating movement during machining. This also saves drive power, which increases considerably the application areas and the performance of the finishing machine according to the invention has an effect.
- the stone turning unit is rotatably mounted and comprises a controllable clamping device. This makes it possible, with dissolved clamping device at times when no workpiece is machined to couple the rotary drive of the workpiece holder with the stone turning unit and by suitable control of the rotary drive of the workpiece holder to turn the stone turning unit so far that the desired finishing stone passes into a processing position ,
- the stone turning unit is clamped again by the controllable clamping device is driven accordingly, so that during the machining of the workpiece, the stone turning unit can not rotate and thus the desired finishing stone remains in engagement with the workpiece to be machined.
- a first switchable and controllable coupling according to the invention between rotary drive of the workpiece holder and the stone turning unit provides that the rotary drive comprises a first gear, preferably a first spur gear, that the stone turning unit comprises a second gear, preferably a second spur gear, and that the coupling of rotary drive and stone turning unit is performed by bringing the first gear and the second gear into engagement with each other.
- the angle of rotation about which the stone turning unit is rotated can be determined directly via an angular detection of the rotary drive of the workpiece holder or of the workpiece holder be determined.
- a rotation angle sensor of the workpiece holder can be used for the positioning of the stone turning unit.
- the rotary drive and the stone turning unit can be coupled to each other by means of a dog clutch.
- the processing of the workpiece or works clamped on the workpiece is interrupted, while the stone turning unit is coupled to the rotary drive.
- the stone turning unit rotates relative to the workpiece, the stone turning unit is fixed or clamped during the processing of the workpiece or work.
- the method according to the invention is simple in an already existing numerical control of the machine tool integrable and may also include more than two finishing stones. Namely, when the finish machining is carried out in three steps, a first finishing stone, a second finishing stone and a third finishing stone for the finishing can be brought into engagement with the workpiece to be machined, in each case the above-mentioned inventive method is used.
- FIG. 1a an embodiment of a finishing machine according to the invention is shown schematically and reduced to the essentials in a side view.
- the finishing machine comprises a workpiece holder 1, on which a workpiece 3 is tensioned.
- the workpiece 3 is formed as a cylindrical ring whose outer surface is finished by superfinishing.
- the workpiece holder 1 is coupled to a rotary drive 5, which allows rotation of the workpiece holder 1 and of the workpiece 3 clamped thereon about an axis of rotation 7.
- the rotary drive 5 is coupled via electrical lines to a control device (not shown) of the finishing machine and is driven according to the requirements of finishing processing.
- a control device not shown
- an unillustrated rotation angle sensor is integrated, which is integrated into the control of the finishing machine.
- a stone turning unit 11 is shown on the in FIG. 1a right side of the workpiece 3.
- the stone turning unit 11 is rotatably supported in bearings 13.
- the bearings 13 may be formed, for example, as deep groove ball bearings or tapered roller bearings.
- the stone turning unit 11 has a controllable clamping device, which in FIG. 1a not shown.
- This clamping device can be designed, for example, in the form of a jaw brake as a non-positive clamping device or as a positive clamping device with the aid of a radially retractable and retractable locking pin, which can be retracted into corresponding grooves or recesses (not shown) of the axis 15 of the stone turning unit 11.
- a first finishing stone 17 and a second finishing stone 19 are arranged on the stone turning unit 11. The arrangement of the finishing stones 17 and 19 is according to the plan view FIG. 1b ) to recognize better.
- a second gear which is designed as a spur gear 21.
- the pitch circle diameter of the first gear 9 and the second gear 21 and the distance between the rotation axis 7 of the rotary drive 1 and the rotation axis 23 of the stone turning unit 11 are coordinated so that the first gear 9 and the second gear 21 engage each other when the Stone turning unit 11 is lowered in the direction of the Y-axis, until the first gear 9 and the second gear 21 are at the same height.
- the rotary drive 5 is controlled so that the stone turning unit 11 at the in FIG. 1 illustrated embodiment is rotated by 180 °, so that the first finishing stone 17 and the second finishing stone 19 change position relative to the workpiece 3. Subsequently, the stone turning unit is locked again with the clamping device, not shown, and in the direction of the positive Y-axis in FIG. 1a Move upward in the direction of the Y-axis until the second finishing stone 19 in engagement with the surface to be machined of the workpiece 3 can be brought.
- the approach of the second finishing stone 19 to the workpiece 3 is then carried out in a conventional manner by a corresponding movement of the stone turning unit in the direction of the negative X-axis.
- the stone turning unit 11 according to the invention can be very simple, space-saving and lightweight. This is particularly advantageous because the stone turning unit 11 or the finishing stone 17 or 19 located in engagement with the workpiece 3 must perform an oscillating movement in the direction of the Y axis when machining the workpiece 3 in order to obtain the grinding pattern characteristic of superfinishing to create.
- FIG. 1 described positive coupling between the rotary drive 5 and stone turning unit 11 and a frictional coupling, for example via a rubberized friction wheel (not shown) is possible.
- a rotation angle sensor is provided on the shaft 15 of the stone turning unit 11, so that regardless of the slip between the friction wheel of the rotary drive 5 and the stone turning unit 11, the exact position of the stone turning unit or the Finishing stones 17 and 19 can be detected by the machine control.
- FIG. 2 another embodiment of a finishing stones according to the invention is shown.
- the stone turning unit is disposed inside the cylindrical workpiece 3 and is positioned relative to the rotary drive 5 so that the rotation axis 7 of the rotary drive 5 and the rotation axis 20 of the stone turning unit are coaxial with each other. Then, the stone turning unit is lowered in the direction of the negative Y-axis so far down in the direction of the rotary drive or the workpiece holder 1 until a positive connection between the rotary drive 5 and workpiece holder 1 and the stone turning unit 11 is made.
- FIG. 2 another embodiment of a finishing stones according to the invention is shown.
- the stone turning unit is disposed inside the cylindrical workpiece 3 and is positioned relative to the rotary drive 5 so that the rotation axis 7 of the rotary drive 5 and the rotation axis 20 of the stone turning unit are coaxial with each other. Then, the stone turning unit is lowered in the direction of the negative Y-axis so far down in the direction of the rotary drive or the work
- a radially arranged projection 23 is provided for this purpose in the workpiece holder 1, which cooperates with a correspondingly shaped groove 25 at the lower end of the stone turning unit 11 in the manner of a dog clutch.
- a positive coupling of stone turning unit 11 and rotary drive 5 instead of a positive coupling of stone turning unit 11 and rotary drive 5 to produce a frictional coupling using a friction surface.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Description
Die Erfindung betrifft eine Finishmaschine mit mindestens zwei Finishsteinen, wobei die Finishsteine auf einer Steinwendeeinheit befestigt sind und wobei die Steinwendeeinheit einen der Finishsteine so positioniert, dass er in Eingriff mit dem zu bearbeitenden Werkstück bringbar ist.The invention relates to a finishing machine having at least two finishing stones, wherein the finishing stones are mounted on a stone turning unit and wherein the stone turning unit positions one of the finishing stones so that it can be brought into engagement with the workpiece to be machined.
Finishmaschinen mit mehreren Finishsteinen werden dann eingesetzt, wenn die Finishbearbeitung nicht in einem Bearbeitungsschritt vollzogen werden kann, sondern wenn zunächst ein Vorfinishen mit einem ersten Finishstein stattfindet und eine noch feinere Oberflächenbearbeitung mit einem zweiten Finishstein erfolgt. Erforderlichenfalls können noch weitere Finishsteine vorgesehen sein.Finishing machines with several finishing stones are used when the finish machining can not be completed in one processing step, but rather when first finishing with a first finishing stone and even finer finishing done with a second finishing stone. If necessary, more finishing stones can be provided.
Bei diesen Anwendungen ist es bekannt, die Finishsteine auf einer Steinwendeeinheit zu befestigen und nacheinander bei der Bearbeitung eines Werkstücks einzusetzen. Dazu ist ein Antrieb Steinwendeinheit erforderlich, der dazu dient, den jeweils zur Bearbeitung benötigten Finishstein in die dafür erforderliche Position zu bringen. Bei den am Markt befindlichen Finishmaschinen werden an der Steinwendeeinheit Antriebseinrichtungen angebracht. Nachteilig an diesem Konzept ist, dass diese Antriebseinrichtung Masse und Bauraumbedarf der Steinwendeeinheit erhöhen. Die Vergrößerung der Masse wiegt umso schwerer als die Steinwendeeinheit während der Bearbeitung des Werkstücks ebenso wie der in Eingriff mit dem Werkstück befindliche Finishstein eine oszillierende Bewegung ausführen muss.In these applications, it is known to mount the finishing stones on a stone turning unit and to insert one after another in the machining of a workpiece. For this purpose, a drive Steinwendeinheit is required, which serves to bring the finishing stone needed in each case in the required position. In the case of the finishing machines available on the market, drive devices are attached to the stone turning unit. A disadvantage of this concept is that this drive device increase mass and space requirements of the stone turning unit. The increase in mass is all the more difficult as the stone turning unit must perform an oscillating motion during machining of the workpiece as well as the finishing stone in engagement with the workpiece.
Dies schlägt in durch einen erhöhten Antriebsleistungsbedarf, aber auch in der Notwendigkeit einer verstärkten Führung und Lagerung der oszillierenden Steinwendeeinheit negativ zu Buche.This has a negative effect due to an increased drive power requirement, but also in the need for increased guidance and storage of the oscillating stone turning unit.
Der Erfindung liegt die Aufgabe zugrunde, eine Finishmaschine mit einer Steinwendeeinheit bereitzustellen, welche die aus dem Stand der Technik bekannten Nachteile überwindet und somit einen kompakteren Aufbau bei gleichzeitig reduzierten oszillierenden Massen und geringerem Antriebsleistungsbedarf ermöglicht.The invention has for its object to provide a finishing machine with a stone turning unit, which overcomes the disadvantages known from the prior art and thus enables a more compact design with simultaneously reduced oscillating masses and lower power requirement.
Diese Aufgabe wird erfindungsgemäß bei einer Finishmaschine mit mindestens zwei Finishsteinen, wobei die Finishsteine auf einer Steinwendeeinheit befestigt sind und wobei die Steinwendeeinheit einen der Finishsteine so positioniert, dass er in Eingriff mit dem zu bearbeitenden Werkstück bringbar ist, wobei das oder die zu bearbeitenden Werkstücke auf einer Werkstückaufnahme gespannt sind und wobei die Werkstückaufnahme von einem steuerbaren Drehantrieb antreibbar ist, dadurch gelöst, dass die Steinwendeeinheit mit dem Drehantrieb der Werkstückaufnahme koppelbar ist.This object is achieved according to the invention in a finishing machine with at least two finishing stones, wherein the finishing stones are mounted on a stone turning unit and wherein the stone turning unit positions one of the finishing stones, that it can be brought into engagement with the workpiece to be machined, wherein the or the workpieces to be machined are clamped on a workpiece holder and wherein the workpiece holder is driven by a controllable rotary drive, achieved in that the stone turning unit with the rotary drive of the workpiece holder can be coupled.
Durch die erfindungsgemäß beanspruchte Möglichkeit, bei Bedarf die Steinwendeeinheit mit dem Drehantrieb der Werkstückaufnahme zu koppeln, kann der ohnehin vorhandene Drehantrieb der Werkstückaufnahme eine zusätzliche Funktion übernahmen. Diese Funktion besteht darin, die Steinwendeeinheit bei Bedarf so weit zu verdrehen, dass der jeweils gewünschte Finishstein in die Bearbeitungsposition gebracht wird. Da das Auswechseln der Finishsteine durch Drehen der Steinwendeeinheit, nur dann erfolgt, wenn das Werkstück gerade nicht bearbeitet wird, ist der Drehantrieb ohnehin in diesem Zeitintervall nicht ausgelastet und kann die erfindungsgemäße neue Funktion ohne Beeinträchtigungen der Leistungsfähigkeit bei der Bearbeitung des Werkstücks übernehmen.By claimed according to the invention, if necessary, to couple the stone turning unit with the rotary drive of the workpiece holder, the already existing rotary drive the workpiece holder can take on an additional function. This function consists in turning the stone turning unit if necessary so far that the respectively desired finishing stone is brought into the processing position. Since the replacement of the finishing stones by turning the stone turning unit, only takes place when the workpiece is not being processed, the rotary drive is not busy in this time interval anyway and can take over the new function of the invention without affecting performance in the machining of the workpiece.
Ein weiterer sehr wichtiger Vorteil ist darin zu sehen, dass die Steinwendeeinheit keinen separaten Antrieb mehr benötigt und daher klein und sehr leicht baut. Der erfindungsgemäß zum Antrieb der Steinwendeeinheit eingesetzte Drehantrieb muss nicht die oszillierende Bewegung des Finishsteins und der Steinwendeeinheit mitmachen, so dass die erfindungsgemäße Steinwendeeinheit erheblich leichter baut und damit auch nur geringere Massenkräfte verursacht, wenn sie während der Bearbeitung in eine oszillierende Bewegung versetzt wird. Dadurch wird auch Antriebsleistung eingespart, was sich erheblich auf die Einsatzbereiche und die Leistungsfähigkeit der erfindungsgemäßen Finishmaschine auswirkt.Another very important advantage is the fact that the stone turning unit no longer needs a separate drive and therefore builds small and very light. The rotary drive used according to the invention for driving the stone turning unit does not have to go along with the oscillating movement of the finishing stone and the stone turning unit, so that the stone turn unit according to the invention builds considerably more easily and thus also causes only smaller mass forces if it is set into an oscillating movement during machining. This also saves drive power, which increases considerably the application areas and the performance of the finishing machine according to the invention has an effect.
In weiterer vorteilhafter Ausgestaltung der Erfindung ist die Steinwendeeinheit drehbar gelagert und umfasst eine steuerbare Klemmeinrichtung. Dadurch ist es möglich, bei gelöster Klemmeinrichtung zu Zeiten, in denen kein Werkstück bearbeitet wird, den Drehantrieb der Werkstückaufnahme mit der Steinwendeeinheit zu koppeln und durch geeignete Ansteuerung des Drehantriebs der Werkstückaufnahme die Steinwendeeinheit so weit zu drehen, dass der gewünschte Finishstein in eine Bearbeitungsposition gelangt.In a further advantageous embodiment of the invention, the stone turning unit is rotatably mounted and comprises a controllable clamping device. This makes it possible, with dissolved clamping device at times when no workpiece is machined to couple the rotary drive of the workpiece holder with the stone turning unit and by suitable control of the rotary drive of the workpiece holder to turn the stone turning unit so far that the desired finishing stone passes into a processing position ,
Anschließend wird die Steinwendeeinheit wieder geklemmt, indem die steuerbare Klemmeinrichtung entsprechend angesteuert wird, so dass während der Bearbeitung des Werkstücks die Steinwendeeinheit sich nicht verdrehen kann und somit der gewünschte Finishstein im Eingriff mit dem zu bearbeitenden Werkstück bleibt.Subsequently, the stone turning unit is clamped again by the controllable clamping device is driven accordingly, so that during the machining of the workpiece, the stone turning unit can not rotate and thus the desired finishing stone remains in engagement with the workpiece to be machined.
Eine erste erfindungsgemäße schaltbaren und steuerbaren Kopplung zwischen Drehantrieb der Werkstückaufnahme und der Steinwendeeinheit sieht vor, dass der Drehantrieb ein erstes Zahnrad, bevorzugt ein erstes Stirnrad umfasst, dass die Steinwendeeinheit ein zweites Zahnrad, bevorzugt ein zweites Stirnrad, umfasst, und dass die Kopplung von Drehantrieb und Steinwendeeinheit dadurch erfolgt, dass erstes Zahnrad und zweites Zahnrad in Eingriff miteinander gebracht werden.A first switchable and controllable coupling according to the invention between rotary drive of the workpiece holder and the stone turning unit provides that the rotary drive comprises a first gear, preferably a first spur gear, that the stone turning unit comprises a second gear, preferably a second spur gear, and that the coupling of rotary drive and stone turning unit is performed by bringing the first gear and the second gear into engagement with each other.
Durch diese erfindungsgemäße starre Kopplung kann der Drehwinkel, um den die Steinwendeeinheit gedreht wird, direkt über eine Winkelerfassung des Drehantriebs der Werkstückaufnahme beziehungsweise der Werkstückaufnahme ermittelt werden. Somit kann auch ein Drehwinkelsensor der Werkstückaufnahme für die Positionierung der Steinwendeeinheit herangezogen werden. Alternativ ist es natürlich auch möglich, in der Steinwendeeinheit einen gesonderten Drehwinkelsensor vorzusehen, so dass die Position der Steinwendeeinheit unabhängig von dem Ausgangssignal eines Drehwinkelsensors des Drehantriebs der Werkstückaufnahme bestimmbar ist.By means of this rigid coupling according to the invention, the angle of rotation about which the stone turning unit is rotated can be determined directly via an angular detection of the rotary drive of the workpiece holder or of the workpiece holder be determined. Thus, a rotation angle sensor of the workpiece holder can be used for the positioning of the stone turning unit. Alternatively, it is of course also possible to provide a separate rotation angle sensor in the stone turning unit, so that the position of the stone turning unit can be determined independently of the output signal of a rotation angle sensor of the rotary drive of the workpiece holder.
In weiterer vorteilhafter Ausgestaltung der Erfindung können der Drehantrieb und die Steinwendeeinheit mittels einer Klauenkupplung miteinander gekoppelt werden.In a further advantageous embodiment of the invention, the rotary drive and the stone turning unit can be coupled to each other by means of a dog clutch.
Selbstverständlich ist es auch möglich, einen Reibradantrieb, das heißt eine kraftschlüssige Kopplung zwischen Drehantrieb und Steinwendeeinheit bei Bedarf herzustellen. Dies kann auf einfache Weise beispielsweise mit einem gummibeschichteten Laufring am Drehantrieb erfolgen, der sich gegen eine entsprechende zylindrische Oberfläche der Steinwendeeinheit gedrückt wird.Of course, it is also possible to produce a Reibradantrieb, that is, a non-positive coupling between the rotary drive and Steinwendeeinheit if necessary. This can be done in a simple manner, for example with a rubber-coated race on the rotary drive, which is pressed against a corresponding cylindrical surface of the stone turning unit.
Wenn die Steinwendeeinheit einen gesonderten Drehwinkelsensor hat, dann ist eine starre Kopplung zwischen Drehantrieb und Steinwendeeinheit nicht erforderlich. Auftretender Schlupf zwischen Drehantrieb und Steinwendeeinheit ist dann ohne Belang, da die Ansteuerung des Drehantriebs der Werkstückaufnahme erst dann unterbrochen wird, wenn die Steinwendeeinheit die gewünschte Position erreicht hat. Diese Position wird über den eigenen Drehwinkelsensor der Steinwendeeinheit eindeutig und mit ausreichend hoher Genauigkeit erfasst.If the stone turning unit has a separate rotation angle sensor, then a rigid coupling between rotary drive and Steinwendeeinheit is not required. Occurring slip between rotary drive and stone turning unit is then irrelevant, since the control of the rotary drive of the workpiece holder is only interrupted when the stone turning unit has reached the desired position. This position is detected uniquely and with sufficiently high accuracy via the own turning angle sensor of the stone turning unit.
Die eingangs genannte Aufgabe wird ebenfalls gelöst durch ein Verfahren zum Wechseln eines mit einem bearbeitenden Werkstücks in Eingriff bringbaren Finishstein, einer
Finishmaschine, wobei mindestens zwei Finishsteine auf einer Steinwendeeinheit befestigt sind, wobei das oder die zu bearbeitenden Werkstücke auf einer Werkstückaufnahme gespannt sind und wobei die Werkstückaufnahme von einem steuerbaren Drehantrieb antreibbar ist, und wobei die Steinwendeeinheit mit dem Drehantrieb der Werkstückaufnahme koppelbar ist, durch folgende Verfahrensschritte gelöst:
- Koppeln von Steinwendeeinheit und Drehantrieb, Ansteuern des Drehantriebs der Werkstückaufnahme, so dass ein zweiter Finishstein die Position eines ersten Finishsteins einnimmt.
Finishing machine, wherein at least two finishing stones are mounted on a stone turning unit, wherein the or workpieces to be machined are clamped on a workpiece holder and wherein the workpiece holder is drivable by a controllable rotary drive, and wherein the stone turning unit is coupled to the rotary drive of the workpiece holder, by the following method steps solved:
- Coupling of Steinwendeeinheit and rotary drive, driving the rotary drive of the workpiece holder, so that a second finishing stone occupies the position of a first finishing stone.
Diesem Verfahren liegen die bereits im Zusammenhang mit der erfindungsgemäßen Finishmaschine beschriebenen Vorteile zugrunde, so dass, um Wiederholungen zu vermeiden, auf das zuvor Gesagte verwiesen wird.This method is based on the advantages already described in connection with the finishing machine according to the invention, so that in order to avoid repetition, reference is made to what has been said above.
In weiterer vorteilhafter Ausgestaltung des erfindungsgemäßen Verfahrens wird die Bearbeitung des oder der auf der Werkstückaufnahme gespannten Werkstücke unterbrochen, während die Steinwendeeinheit mit dem Drehantrieb gekoppelt ist.In a further advantageous embodiment of the method according to the invention, the processing of the workpiece or works clamped on the workpiece is interrupted, while the stone turning unit is coupled to the rotary drive.
Dadurch können die Finishsteine ohne das Werkstück zu berühren, in die gewünschte Position bewegt werden.This allows the finishing stones to be moved to the desired position without touching the workpiece.
Um zu vermeiden, dass während der Bearbeitung des Werkstücks sich die Steinwendeeinheit relativ zum Werkstück verdreht, wird die Steinwendeeinheit während der Bearbeitung des oder der Werkstücke fixiert beziehungsweise geklemmt.In order to avoid that during the processing of the workpiece, the stone turning unit rotates relative to the workpiece, the stone turning unit is fixed or clamped during the processing of the workpiece or work.
Das erfindungsgemäße Verfahren ist einfach in eine bereits vorhandene numerische Steuerung der Werkzeugmaschine integrierbar und kann auch mehr als zwei Finishsteine umfassen. Wenn nämlich die Finishbearbeitung in drei Schritten erfolgt, kann nacheinander ein erster Finishstein, ein zweiter Finishstein und für die Endbearbeitung ein dritter Finishstein in Eingriff mit dem zu bearbeitenden Werkstück gebracht werden, wobei jeweils das o. g. erfindungsgemäße Verfahren zur Anwendung kommt.The method according to the invention is simple in an already existing numerical control of the machine tool integrable and may also include more than two finishing stones. Namely, when the finish machining is carried out in three steps, a first finishing stone, a second finishing stone and a third finishing stone for the finishing can be brought into engagement with the workpiece to be machined, in each case the above-mentioned inventive method is used.
Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung sind der nachfolgenden Zeichnung, deren Beschreibung und den Patentansprüchen entnehmbar. Alle in der Zeichnung, deren Beschreibung und den Patentansprüchen offenbarten Merkmale können sowohl einzeln als auch in beliebiger Kombination miteinander erfindungswesentlich sein.Further advantages and advantageous embodiments of the invention are the following drawings, the description and the claims removable. All of the features disclosed in the drawing, the description and the claims can be essential to the invention both individually and in any combination with one another.
In der Zeichnung zeigen:
Figur 1- ein erstes Ausführungsbeispiel einer erfindungsgemäßen Finishmaschine in einer Seitenansicht und in einer Ansicht von oben und
- Figur 2
- ein zweites Ausführungsbeispiel einer erfindungsgemäßen Finishmaschine.
- FIG. 1
- a first embodiment of a finishing machine according to the invention in a side view and in a view from above and
- FIG. 2
- A second embodiment of a finishing machine according to the invention.
In der
Die Werkstückaufnahme 1 ist mit einem Drehantrieb 5 gekoppelt, der eine Drehung der Werkstückaufnahme 1 und des darauf gespannten Werkstücks 3 um eine Drehachse 7 ermöglicht. Der Drehantrieb 5 ist über elektrische Leitungen mit einem Steuergerät (nicht dargestellt) der Finishmaschine gekoppelt und wird den Erfordernissen der Finishbearbeitung entsprechend angesteuert. In den Drehantrieb 5 ist ein nicht dargestellter Drehwinkelsensor integriert, der in die Steuerung der Finishmaschine eingebunden ist.The
An dem in
Des Weiteren weist die Steinwendeeinheit 11 eine steuerbare Klemmeinrichtung auf, die in
Aus der Draufsicht gemäß
Zu diesem Zweck ist am in
Wenn die Zahnräder 9 und 21 im Eingriff sind, wird erfindungsgemäß der Drehantrieb 5 so angesteuert, dass die Steinwendeeinheit 11 bei dem in
Das Anfahren des zweiten Finishsteins 19 an das Werkstück 3 erfolgt dann in herkömmlicher Weise durch eine entsprechende Bewegung der Steinwendeeinheit in Richtung der negativen X-Achse.The approach of the
Schon aus der Darstellung gemäß der
Je leichter die Steinwendeeinheit ist, desto geringer sind die Kräfte, die benötigt werden, um die Steinwendeeinheit 11 in die gewünschte oszillierende Bewegung zu versetzen. Gleichzeitig werden die Massenkräfte reduziert, was sich ebenfalls positiv auf die Bearbeitungsqualität des Werkstücks 3 auswirkt.The lighter the stone turning unit is, the lower are the forces needed to set the
Es versteht sich von selbst, dass anstelle der in
In
Nach erfolgter Verdrehung der Steinwendeeinheit 11 wird diese wieder in Richtung der positiven Y-Achse nach oben angehoben, so dass die Kopplung zwischen Drehantrieb 5 beziehungsweise Werkstückaufnahme 1 einerseits und Steinwendeeinheit 11 aufgehoben wird. Anschließend wird einer der beiden Finishsteine 17, 19 gegen die in Eingriff mit der zu bearbeitenden Oberfläche des Werkstücks 3 gebracht. Nach Aufheben der Kopplung von Drehantrieb 5 und Steinwendeeinheit wird die Steinwendeeinheit wieder geklemmt beziehungsweise arretiert. Anschließend wird der gewünschte Finishstein 17 oder 19 in Eingriff mit der zu bearbeitenden Oberfläche des Werkstücks 3 gebracht.After the rotation of the
Claims (8)
- Finishing machine with at least two finishing stones (17, 19), in which the finishing stones (17, 19) are coupled to a stone finishing unit (11), and in which the stone finishing unit (11) is positioned relative to one of the finishing stones (17, 19) such that it can be made to engage with a workpiece (3) for machining, whereby the workpiece or workpieces (3) for machining are clamped to a workpiece receiver (1), and in which the workpiece receiver (1) can be driven by a controllable rotating drive unit (5), characterised in that the stone turning unit (11) can be coupled to the rotating drive unit (5) of workpiece receiver (1).
- Finishing machine according to Claim 1, characterised in that the stone turning unit (11) can rotate on its bearings (13).
- Finishing machine according to one of the preceding Claims, characterised in that the stone turning unit (11) incorporates an engaging and disengaging clamping device.
- Finishing machine according to one of the preceding Claims, characterised in that the rotating drive unit (5) incorporates a first toothed gear, preferably a first cylinder gear (9), that the stone turning unit (11) incorporates a second toothed gear, preferably a second cylinder gear (21), and that the coupling of rotating drive unit (5) and stone turning unit (11) takes place such that the first toothed gear (9) and the second toothed gear (21) are made to engage with each other.
- Finishing machine according to one of the preceding Claims, characterised in that the rotating drive unit (5) and the stone turning unit (11) can be coupled together by a dog coupling (23, 25).
- Method for exchanging a finishing stone (17, 19), that can be made to engage with a workpiece (3) for machining, of a finishing machine, in which at least two finishing stones (17, 19) are coupled to a stone turning unit (11), whereby the workpiece or workpieces (3) for machining are clamped to a workpiece receiver (1), and in which the workpiece receiver (1) can be driven by a controllable rotating drive unit (5), and in which the stone turning unit (11) can be coupled to the rotating drive unit (5) of workpiece receiver (1), characterised by the following operating steps:stone turning unit (11) is coupled to rotating drive unit (5),rotating drive unit (5) is controlled such that a second finishing stone (19) takes the position of a first finishing stone (17).
- Method according to Claim 6, characterised in that machining of the workpiece or workpieces (3) clamped on workpiece receiver (1) is interrupted for as long as the stone turning unit (11) is coupled to the rotating drive unit (5).
- Method according to Claim 6 or 7, characterised in that the stone turning unit (11) is immobilised and/or clamped during machining of the workpieces (3) clamped to workpiece receiver (1).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE502008001096T DE502008001096D1 (en) | 2008-11-05 | 2008-11-05 | Finishing machine with a stone turning unit |
EP08019311A EP2184133B1 (en) | 2008-11-05 | 2008-11-05 | Finishing machine with a stone turning unit |
US12/606,855 US8562391B2 (en) | 2008-11-05 | 2009-10-27 | Finishing machine with stone rotating unit |
CN200910208729.7A CN101733681B (en) | 2008-11-05 | 2009-11-05 | Finishing machine with a stone turning unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08019311A EP2184133B1 (en) | 2008-11-05 | 2008-11-05 | Finishing machine with a stone turning unit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2184133A1 EP2184133A1 (en) | 2010-05-12 |
EP2184133B1 true EP2184133B1 (en) | 2010-08-04 |
Family
ID=40459618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08019311A Expired - Fee Related EP2184133B1 (en) | 2008-11-05 | 2008-11-05 | Finishing machine with a stone turning unit |
Country Status (4)
Country | Link |
---|---|
US (1) | US8562391B2 (en) |
EP (1) | EP2184133B1 (en) |
CN (1) | CN101733681B (en) |
DE (1) | DE502008001096D1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101961849B (en) * | 2010-07-21 | 2012-07-04 | 中国科学院国家天文台南京天文光学技术研究所 | In-site grinding method and device thereof of friction drive super large diameter friction disk of telescope |
US10406648B2 (en) * | 2012-01-19 | 2019-09-10 | Newgrind Inc. | Apparatus for surface abrasion |
CN110900426A (en) * | 2019-12-03 | 2020-03-24 | 徐州华邦专用汽车有限公司 | Special burnishing device for auto-parts |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2026096A (en) * | 1933-02-28 | 1935-12-31 | Muhlbauer Ernst Curt | Grinding of rotating eccentric knives |
GB456720A (en) * | 1935-03-13 | 1936-11-13 | Leo Arthur Kelsey | Improvements in sharpening means for safety razors |
DE2652025A1 (en) * | 1975-12-10 | 1977-06-23 | Esco Sa | GRINDING AND POLISHING MACHINE FOR TOOLS |
JPS53138598A (en) * | 1977-05-10 | 1978-12-04 | Inoue Japax Res Inc | Grinding device |
DE3133488C3 (en) * | 1981-08-25 | 1994-07-28 | Walter Ag | Program-controlled tool grinding machine |
CH663923A5 (en) * | 1983-09-24 | 1988-01-29 | Hauni Werke Koerber & Co Kg | DRESSING DEVICE FOR TRAIN-CONTROLLED DRESSING OF GRINDING DISC PROFILES. |
CN1056640A (en) * | 1990-05-19 | 1991-12-04 | 陈吉祥 | Reducing mechanism |
CH683970A5 (en) * | 1991-08-28 | 1994-06-30 | Reishauer Ag | Method and apparatus for gear finishing. |
DE4426452C1 (en) * | 1994-07-26 | 1995-09-07 | Erwin Junker | Process for grinding concave flanks of cams of camshaft |
DE19620813C2 (en) * | 1996-05-23 | 2000-07-20 | Junker Erwin Maschf Gmbh | Method and device for non-circular grinding of cam shapes with concave flanks |
JP4015291B2 (en) * | 1998-07-30 | 2007-11-28 | シチズンホールディングス株式会社 | Cylindrical grinder, its work shaft, and flat cone machining method using this cylindrical grinder |
DE19921785B4 (en) * | 1999-05-11 | 2005-11-24 | Erwin Junker Maschinenfabrik Gmbh | Method for grinding convex running surfaces and outer diameters on shafts with at least one disk-shaped shaft section and grinding machine for carrying out the method |
US6595835B2 (en) * | 2000-07-11 | 2003-07-22 | Avs Supply, Inc. | CD refacing system |
CN1565804A (en) * | 2003-07-02 | 2005-01-19 | 黑龙江省体育科学研究所 | Portable digital controlled skates grinder |
JP4109683B2 (en) * | 2005-05-16 | 2008-07-02 | 中山精工株式会社 | Work drive device for cylindrical grinder |
KR100795470B1 (en) * | 2007-03-15 | 2008-01-16 | 최욱현 | Turning processing apparatus and control method having high-speed grinding function |
-
2008
- 2008-11-05 EP EP08019311A patent/EP2184133B1/en not_active Expired - Fee Related
- 2008-11-05 DE DE502008001096T patent/DE502008001096D1/en active Active
-
2009
- 2009-10-27 US US12/606,855 patent/US8562391B2/en active Active
- 2009-11-05 CN CN200910208729.7A patent/CN101733681B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE502008001096D1 (en) | 2010-09-16 |
CN101733681B (en) | 2013-11-06 |
US20100112913A1 (en) | 2010-05-06 |
CN101733681A (en) | 2010-06-16 |
EP2184133A1 (en) | 2010-05-12 |
US8562391B2 (en) | 2013-10-22 |
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