EP0482343A2 - Process of and device for finishing rings, especially race rings for rolling bearings - Google Patents
Process of and device for finishing rings, especially race rings for rolling bearings Download PDFInfo
- Publication number
- EP0482343A2 EP0482343A2 EP91115615A EP91115615A EP0482343A2 EP 0482343 A2 EP0482343 A2 EP 0482343A2 EP 91115615 A EP91115615 A EP 91115615A EP 91115615 A EP91115615 A EP 91115615A EP 0482343 A2 EP0482343 A2 EP 0482343A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring
- machined
- ring surface
- centering
- hydraulic
- 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.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005096 rolling process Methods 0.000 title claims abstract description 6
- 238000005259 measurement Methods 0.000 claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 230000005855 radiation Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
Images
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
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/06—Honing machines or devices; Accessories therefor with controlling or gauging equipment
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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
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
- B24B19/06—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements for grinding races, e.g. roller races
-
- 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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/08—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving liquid or pneumatic means
Definitions
- the invention relates to a method for fine grinding rings on the outer ring surface or on the inner ring surface, in particular for fine grinding roller bearing races, a ring to be machined being picked up by a workpiece holder with centering via a hydraulic centering means and being driven in rotation by a driver, the one to be machined Ring surface is subjected to a measurement during a grinding process and the grinding process is controlled and / or regulated in accordance with the measurement values of the measurement.
- the invention also relates to devices for performing such a method. It goes without saying that the measurement values of the measurement are recorded and evaluated electrically by means of suitable aids, for which purpose the modern, in particular electronic aids of measurement and control technology offer a multitude of possibilities, and also with computer support.
- the measured values define the actual value as it were.
- the control or regulation takes place z. B. in accordance with a predetermined material removal as a setpoint. Particularly in the case of rolling bearing rings for high-speed rolling bearings, high demands are placed on the accuracy of the material removal. It must also be ensured that the roundness of the rings does not suffer during machining. Centering by means of a hydraulic centering means is also referred to as hydro-centering (cf. DE 18 05 307).
- the hydro-centering can take place with circumferentially closed workpiece holders, but also with shoe-like hydro-centric elements. It allows the rings to be machined to be accommodated in such a way that clamping deformations or clamping deformations, such as those e.g. B. with mechanical clamping or clamping with a three-jaw chuck must not be accepted. In this respect, the hydro-centering allows fine grinding with high accuracy. It is understood that the rings to be machined with suitable tools, for. B. over pressure rollers, are pressed against the driver.
- the measurement is carried out with the aid of mechanical sensors which are placed with little pressure on the ring surface to be machined and which, for. B. are equipped with a fine diamond tip. It cannot be excluded that the tips of the feelers leave marks on the machined ring surface. The unavoidable slight out-of-roundness that the rings to be machined bring with them from the prefabrication can also lead to disturbing vibrations in the measuring system.
- the measurement is a non-contact measurement.
- a flow of measuring air which emerges in a free jet from a nozzle, is directed onto the surface to be machined, so that a throttle gap is created between the nozzle and the surface to be machined.
- Changes in the gap width of this throttle gap, at different distances from the surface to be machined from the nozzle are based, cause pressure fluctuations in the air flow which is supplied to the nozzle via a line, which pressure fluctuations are recorded and evaluated in the manner described.
- the measurement accuracy is not sufficient for high requirements and disturbing vibrations cannot be excluded here either.
- a liquid jet namely an oil jet
- the invention has for its object to provide a method for fine grinding rings on the outer ring surface or on the inner ring surface, in particular for fine grinding rolling bearing races, with which the measurement can be carried out with great accuracy and without interference from vibrations.
- the invention teaches that a non-contact measurement is carried out with at least two identical measuring heads, from which a hydraulic measuring means which corresponds to the centering means emerges from at least one nozzle opening in each case, that the measuring heads compensate for measuring force in an equidistant manner over the
- the circumference of the ring surface to be machined can be arranged so that the hydraulic measuring means is introduced free of radiation into the measuring and centering layer, which takes along the ring surface to be machined and which forms between the measuring head and the ring surface.
- the invention is based on the knowledge that it is not feasible to work with a free jet of measuring air or with a free jet of a measuring liquid when fine-grinding rings and in particular roller bearing races.
- the disturbances described above can be avoided when working with measuring heads from which the measuring medium enters the measuring medium and centering medium layer free of radiation, which necessarily occurs when rings are machined on the inner or outer ring surface if the centering takes place via a hydraulic centering medium . Without disturbing the centering, it is possible to work with relatively high pressures of the measuring means and thus also the centering means, if care is taken in the manner described that the measuring heads are equidistantly distributed over the circumference of the ring surface to be machined in order to compensate for measuring forces. Measuring force compensating means that the forces which arise as a result of the measuring means being supported, as it were, with considerable pressure on the ring surface to be machined.
- the measuring means is a hydraulic measuring means, the viscosity can be adjusted so that the vibrations described above can no longer occur. It goes without saying that the flow cross sections for the supply of the measuring means to the measuring heads are not too large and the lines themselves are set up to be sufficiently elastically deformable. According to a preferred embodiment of the invention, a hydraulic flushing agent which is customary in fine grinding is used as the measuring and centering means.
- the centering means and the measuring means can be used simultaneously as coolants, so that the rings to be machined do not experience disturbing thermal expansions which result from the heat of machining.
- the invention teaches in particular that a quantity of measuring medium which is effective at the same time is used.
- the measuring medium quantity and the centering medium quantity can be taken from the same pressure medium system. It is within the scope of the invention to cool the centering means or the measuring means, using suitable heat exchangers.
- a preferred embodiment of the invention is characterized in that three measuring heads are arranged which are offset by 120 ° over the circumference of the ring surface to be machined. It is expedient to work with identically identical measuring heads.
- the invention also relates to a device for carrying out the described method.
- the device is mainly characterized in that the measuring heads are adjustable in the radial direction with respect to the surface to be machined, back and forth.
- the measuring heads can have a nozzle tube arranged in the radial direction, so that they mainly consist of this nozzle tube.
- the measuring heads have a measuring shoe, the measuring surface of which is matched in curvature to the ring surface to be machined, and that the nozzle opening opens into the measuring surface.
- the nozzle openings of all measuring heads expediently have the same diameter; they should be set up to deliver the same flow of measuring medium.
- the measured values can be taken from the individual measuring heads or from the measuring medium flows supplied to the individual measuring heads and evaluated individually or in an integrated manner.
- the device shown in the figures is intended for fine grinding rings 1 on the inner ring surface (FIGS. 1 and 2) or on the outer ring surface (FIG. 3).
- a machine-fixed, non-rotating workpiece holder 2 for the rings 1 to be machined can first be seen, the centering being carried out via a hydraulic centering means 3, which is supplied via special bores and channels, which has not been drawn. If FIG. 2 is added, it can be seen that a ring 1 to be machined, which is received by the workpiece holder 2, is rotatably carried along by a driver 4, which consists of a shaft and a disk connected to it. This also requires a pressure device that presses the ring to be machined against the driver. The pressure device was not drawn.
- measuring heads 5 are provided which are adjustable in the radial direction with respect to the surface to be machined. This setting can be made now and then in the radial direction, which was indicated by a double arrow.
- a very fine gap can be set between the ring surface to be machined and the measuring head 5. 1 and 3, this gap was shown enlarged with considerable exaggeration.
- the gap width is in general in the ⁇ range.
- the measuring heads 5 are equidistantly distributed over the circumference of the ring surface to be machined. they each have at least one nozzle opening 6, from which emerges a hydraulic measuring means which corresponds to the centering means. It enters the measuring and centering layer 7, which has been drawn in an exaggerated thickness, without any free radiation. It forms between the ring surface to be machined and each of the measuring heads 5.
- the measuring heads 5 are designed as measuring shoes, the measuring surface of which is adapted in terms of curvature to the ring surface to be machined. As shown in FIG. 2, the nozzle openings 6 open into the measuring surface. In the exemplary embodiment and according to a preferred embodiment of the invention, the nozzle openings 6 of all measuring heads 5 have the same diameter. They are also set up to deliver the same flow of measuring medium. In Fig. 3 it was indicated that the measuring heads can also have a nozzle tube 8 extending in the radial direction. - The procedure described above can be implemented very easily with such devices. If it is a matter of machining roller bearing races, the measuring heads 5 can be inserted into the grooves of the rings by a radial adjustment and brought into the working position.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Feinschleifen von Ringen auf der Ringaußenfläche oder auf der Ringinnenfläche, insbesondere zum Feinschleifen von Wälzlagerlaufringen, wobei ein zu bearbeitender Ring von einer Werkstückaufnahme mit Zentrierung über ein hydraulisches Zentriermittel aufgenommen und von einem Treiber rotierend angetrieben wird, wobei die zu bearbeitende Ringfläche bei einem Schleifvorgang einer Vermessung unterworfen wird und wobei der Schleifvorgang nach Maßgabe der Meßwerte der Vermessung gesteuert und/oder geregelt wird. Die Erfindung betrifft außerdem Vorrichtungen für die Durchführung eines solchen Verfahrens. Es versteht sich, daß die Meßwerte der Vermessung über geeignete Hilfsmittel elektrisch aufgenommen und ausgewertet werden, wozu die modernen, insbesondere elektronischen Hilfsmittel der Meß- und Regeltechnik eine Mehrzahl von Möglichkeiten bieten, und zwar auch rechnergestützt. Die Meßwerte definieren gleichsam den Istwert. Die Steuerung oder Regelung erfolgt z. B. nach Maßgabe eines vorgegebenen Werkstoffabtrages als Sollwert. Insbesondere bei Wälzlagerringen für hochtourige Wälzlager werden an die Genauigkeit des Werkstoffabtrages hohe Anforderungen gestellt. Außerdem muß sichergestellt werden, daß die Rundheit der Ringe bei der Bearbeitung nicht leidet. Die Zentrierung über ein hydraulisches Zentriermittel wird auch als Hydrozentrierung bezeichnet (vgl. DE 18 05 307).The invention relates to a method for fine grinding rings on the outer ring surface or on the inner ring surface, in particular for fine grinding roller bearing races, a ring to be machined being picked up by a workpiece holder with centering via a hydraulic centering means and being driven in rotation by a driver, the one to be machined Ring surface is subjected to a measurement during a grinding process and the grinding process is controlled and / or regulated in accordance with the measurement values of the measurement. The invention also relates to devices for performing such a method. It goes without saying that the measurement values of the measurement are recorded and evaluated electrically by means of suitable aids, for which purpose the modern, in particular electronic aids of measurement and control technology offer a multitude of possibilities, and also with computer support. The measured values define the actual value as it were. The control or regulation takes place z. B. in accordance with a predetermined material removal as a setpoint. Particularly in the case of rolling bearing rings for high-speed rolling bearings, high demands are placed on the accuracy of the material removal. It must also be ensured that the roundness of the rings does not suffer during machining. Centering by means of a hydraulic centering means is also referred to as hydro-centering (cf. DE 18 05 307).
Die Hydrozentrierung kann mit umfangsmäßig geschlossenen Werkstückaufnahmen, aber auch mit schuhartigen Hydrozentrikelementen erfolgen. Sie erlaubt es, die zu bearbeitenden Ringe so aufzunehmen, daß Einspannverformungen oder Aufspannverformungen, wie sie z. B. bei mechanischer Einspannung oder Aufspannung mit einem Dreibackenfutter in Kauf genommen werden müssen, nicht auftreten. Insoweit erlaubt die Hydrozentrierung eine feinschleifende Bearbeitung mit hoher Genauigkeit. Es versteht sich, daß die zu bearbeitenden Ringe mit geeigneten Hilfsmitteln, z. B. über Andrückrollen, gegen den Treiber gedrückt werden.The hydro-centering can take place with circumferentially closed workpiece holders, but also with shoe-like hydro-centric elements. It allows the rings to be machined to be accommodated in such a way that clamping deformations or clamping deformations, such as those e.g. B. with mechanical clamping or clamping with a three-jaw chuck must not be accepted. In this respect, the hydro-centering allows fine grinding with high accuracy. It is understood that the rings to be machined with suitable tools, for. B. over pressure rollers, are pressed against the driver.
Im Rahmen von bekannten Maßnahmen, deren Analyse die Erfindung berücksichtigt, erfolgt die Vermessung mit Hilfe von mechanischen Fühlern, die mit geringem Andruck auf die zu bearbeitende Ringfläche aufgesetzt werden und die z. B. mit einer feinen Diamantspitze ausgerüstet sind. Dabei kann nicht ausgeschlossen werden, daß die Spitzen der Fühler Spuren auf der bearbeiteten Ringfläche hinterlassen. Auch kann die unvermeidbare geringe Unrundheit, die die zu bearbeitenden Ringe aus der Vorfertigung mitbringen, zu störenden Schwingungen im Meßsystem führen. Im Rahmen von anderen bekannten Maßnahmen zum Feinschleifen von Ringen, an die die Erfindung anschließt, ist die Vermessung eine berührungslose Vermessung. Dazu wird ein Meßluftstrom, der im freien Strahl aus einer Düse austritt, auf die zu bearbeitende Fläche gerichtet, so daß zwischen der Düse und der zu bearbeitenden Fläche gleichsam ein Drosselspalt entsteht. Veränderungen der Spaltweite dieses Drosselspaltes, die auf unterschiedlichem Abstand der zu bearbeitenden Fläche von der Düse beruhen, bewirken in dem Luftstrom, der über eine Leitung der Düse zugeführt wird, Druckschwankungen, die meßtechnisch erfaßt und in der beschriebenen Weise ausgewertet werden. Hier ist bei hohen Anforderungen die Meßgenauigkeit nicht ausreichend und auch hier können störende Schwingungen nicht ausgeschlossen werden. Endlich ist im Zusammenhang mit der Bearbeitung von ebenen Flächen durch Feinschleifen vorgeschlagen worden, einen Flüssigkeitsstrahl, nämlich einen Ölstrahl, gleichsam als Fühler einzusetzen. Nicht zum Stande der Technik gehörende Versuche, mit einem solchen Flüssigkeitsstrahl bei einem Verfahren zum Feinschleifen von Ringen auf der Ringaußenfläche oder Ringinnenfläche, insbesondere beim Feinschleifen von Wälzlagerlaufringen, zu arbeiten, führten nicht zum Erfolg, sondern eher zu Störungen der Zentrierung. Die Meßgenauigkeit erwies sich als unzureichend.In the context of known measures, the analysis of which the invention takes into account, the measurement is carried out with the aid of mechanical sensors which are placed with little pressure on the ring surface to be machined and which, for. B. are equipped with a fine diamond tip. It cannot be excluded that the tips of the feelers leave marks on the machined ring surface. The unavoidable slight out-of-roundness that the rings to be machined bring with them from the prefabrication can also lead to disturbing vibrations in the measuring system. Within the scope of other known measures for fine grinding rings, to which the invention is connected, the measurement is a non-contact measurement. For this purpose, a flow of measuring air, which emerges in a free jet from a nozzle, is directed onto the surface to be machined, so that a throttle gap is created between the nozzle and the surface to be machined. Changes in the gap width of this throttle gap, at different distances from the surface to be machined from the nozzle are based, cause pressure fluctuations in the air flow which is supplied to the nozzle via a line, which pressure fluctuations are recorded and evaluated in the manner described. The measurement accuracy is not sufficient for high requirements and disturbing vibrations cannot be excluded here either. Finally, in connection with the processing of flat surfaces by fine grinding, it has been proposed to use a liquid jet, namely an oil jet, as a sensor. Attempts not belonging to the state of the art to work with such a liquid jet in a method for fine grinding rings on the outer or inner surface of the ring, in particular in fine grinding of roller bearing races, did not lead to success, but rather to disturbances in the centering. The measuring accuracy turned out to be insufficient.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Feinschleifen von Ringen auf der Ringaußenfläche oder auf der Ringinnenfläche, insbesondere zum Feinschleifen von Wälzlagerlaufringen, anzugeben, mit dem die Vermessung mit großer Genauigkeit und ohne Störungen durch Schwingungen erfolgen kann.The invention has for its object to provide a method for fine grinding rings on the outer ring surface or on the inner ring surface, in particular for fine grinding rolling bearing races, with which the measurement can be carried out with great accuracy and without interference from vibrations.
Zur Lösung dieser Aufgabe lehrt die Erfindung, daß eine berührungslose Vermessung mit zumindest zwei gleichen Meßköpfen durchgeführt wird, aus denen ein mit dem Zentriermittel übereinstimmendes hydraulisches Meßmittel aus jeweils zumindest einer Düsenöffnung austritt, daß die Meßköpfe meßkraftkompensierend äquldistant über den Umfang der zu bearbeitenden Ringfläche verteilt angeordnet werden, und daß das hydraulische Meßmittel freistrahlfrei in die Meß- und Zentriermittelschicht eingeführt wird, die die zu bearbeitende Ringfläche mitnimmt und die sich zwischen dem Meßkopf und der Ringfläche ausbildet.- Die Erfindung beruht auf der Erkenntnis, daß es nicht tunlich ist, beim Feinschleifen von Ringen und insbesondere Wälzlagerlaufringen mit einem freien Strahl von Meßluft oder mit einem freien Strahl einer Meßflüssigkeit zu arbeiten. Die vorstehend beschriebenen Störungen lassen sich vermeiden, wenn mit Meßköpfen gearbeitet wird, aus denen das Meßmittel freistrahlfrei in die Meßmittel- und Zentriermittelschicht eintritt, die sich notwendigerweise bei der Bearbeitung von Ringen auf der Ringinnenfläche oder Ringaußenfläche einstellt, wenn die Zentrierung über ein hydraulisches Zentriermittel erfolgt. Ohne Störung der Zentrierung kann mit verhältnismäßig hohen Drücken des Meßmittels und damit auch des Zentriermittels gearbeitet werden, wenn in der beschriebenen Weise dafür gesorgt wird, daß die Meßköpfe meßkraftkompensierend äquidistant über den Umfang der zu bearbeitenden Ringfläche verteilt angeordnet werden. Meßkraftkompensierend bedeutet, daß die Kräfte sich aufheben, die dadurch entstehen, daß das Meßmittel mit einem beachtlichen Druck an der zu bearbeitenden Ringfläche gleichsam abgestutzt ist. Da das Meßmittel ein hydraulisches Meßmittel ist, läßt sich die Viskosität so einstellen, daß die eingangs beschriebenen Schwingungen nicht mehr auftreten können. Es versteht sich, daß die Strömungsquerschnitte für die Zuführung des Meßmittels zu den Meßköpfen nicht zu groß und die Leitungen selbst ausreichend gering elastisch verformbar eingerichtet sind. Nach bevorzugter Ausführungsform der Erfindung wird ein beim Feinschleifen übliches hydraulisches Spülmittel als Meß- und Zentriermittel eingesetzt.To achieve this object, the invention teaches that a non-contact measurement is carried out with at least two identical measuring heads, from which a hydraulic measuring means which corresponds to the centering means emerges from at least one nozzle opening in each case, that the measuring heads compensate for measuring force in an equidistant manner over the The circumference of the ring surface to be machined can be arranged so that the hydraulic measuring means is introduced free of radiation into the measuring and centering layer, which takes along the ring surface to be machined and which forms between the measuring head and the ring surface. The invention is based on the knowledge that it is not feasible to work with a free jet of measuring air or with a free jet of a measuring liquid when fine-grinding rings and in particular roller bearing races. The disturbances described above can be avoided when working with measuring heads from which the measuring medium enters the measuring medium and centering medium layer free of radiation, which necessarily occurs when rings are machined on the inner or outer ring surface if the centering takes place via a hydraulic centering medium . Without disturbing the centering, it is possible to work with relatively high pressures of the measuring means and thus also the centering means, if care is taken in the manner described that the measuring heads are equidistantly distributed over the circumference of the ring surface to be machined in order to compensate for measuring forces. Measuring force compensating means that the forces which arise as a result of the measuring means being supported, as it were, with considerable pressure on the ring surface to be machined. Since the measuring means is a hydraulic measuring means, the viscosity can be adjusted so that the vibrations described above can no longer occur. It goes without saying that the flow cross sections for the supply of the measuring means to the measuring heads are not too large and the lines themselves are set up to be sufficiently elastically deformable. According to a preferred embodiment of the invention, a hydraulic flushing agent which is customary in fine grinding is used as the measuring and centering means.
Von besonderem Vorteil ist es, daß bei dem erfindungsgemäßen Verfahren das Zentriermittel und das Meßmittel gleichzeitig als Kühlmittel eingesetzt werden können, so daß die zu bearbeitenden Ringe störende Wärmedehnungen, die aus der Bearbeitungswärme resultieren, nicht erfahren. Dazu lehrt die Erfindung insbesondere, daß mit einer zugleich kühlwirksamen Meßmittelmenge gearbeitet wird. Die Meßmittelmenge und die Zentriermittelmenge können dem gleichen Druckmittelsystem entnommen werden. Im Rahmen der Erfindung liegt es, dabei eine Kühlung des Zentriermittels bzw. des Meßmittels durchzuführen, und zwar über geeignete Wärmetauscher.It is particularly advantageous that in the method according to the invention the centering means and the measuring means can be used simultaneously as coolants, so that the rings to be machined do not experience disturbing thermal expansions which result from the heat of machining. To this end, the invention teaches in particular that a quantity of measuring medium which is effective at the same time is used. The measuring medium quantity and the centering medium quantity can be taken from the same pressure medium system. It is within the scope of the invention to cool the centering means or the measuring means, using suitable heat exchangers.
Um eine ausreichende Meßkraftkompensation durchzuführen, kann mit zwei diametral gegenüberliegenden Meßköpfen gearbeitet werden. Eine bevorzugte Ausführungsform der Erfindung ist dadurch gekennzeichnet, daß mit drei über den Umfang der zu bearbeitenden Ringfläche um 120° versetzt angeordneten Meßköpfen gearbeitet wird. Zweckmäßigerweise wird mit identisch gleichen Meßköpfen gearbeitet.In order to carry out sufficient measurement force compensation, two diametrically opposed measuring heads can be used. A preferred embodiment of the invention is characterized in that three measuring heads are arranged which are offset by 120 ° over the circumference of the ring surface to be machined. It is expedient to work with identically identical measuring heads.
Gegenstand der Erfindung ist auch eine Vorrichtung für die Durchführung des beschriebenen Verfahrens. Diese Vorrichtung ist hauptsächlich dadurch gekennzeichnet, daß die Meßköpfe in radialer Richtung in bezug auf die zu bearbeitende Oberfläche, hin und zurück, einstellbar sind. Die Meßköpfe können im einfachsten Fall ein in radialer Richtung angeordnetes Düsenrohr aufweisen, insoweit also hauptsächlich aus diesem Düsenrohr bestehen. Es besteht aber auch die Möglichkeit, die Vorrichtung so auszulegen, daß die Meßköpfe einen Meßschuh aufweisen, dessen Meßfläche krümmungsmäßig der zu bearbeitenden Ringfläche angepaßt ist, und daß die Düsenöffnung in der Meßfläche mündet. Die Düsenöffnungen aller Meßköpfe besitzen zweckmäßigerweise den gleichen Durchmesser, sie sollten zur Abgabe gleicher Meßmittelmengenströme eingerichtet sein. - Die Meßwerte können von den einzelnen Meßköpfen bzw. von den den einzelnen Meßköpfen zugeführten Meßmittelströmen abgenommen und einzeln oder integriert ausgewertet werden.The invention also relates to a device for carrying out the described method. These The device is mainly characterized in that the measuring heads are adjustable in the radial direction with respect to the surface to be machined, back and forth. In the simplest case, the measuring heads can have a nozzle tube arranged in the radial direction, so that they mainly consist of this nozzle tube. However, there is also the possibility of designing the device in such a way that the measuring heads have a measuring shoe, the measuring surface of which is matched in curvature to the ring surface to be machined, and that the nozzle opening opens into the measuring surface. The nozzle openings of all measuring heads expediently have the same diameter; they should be set up to deliver the same flow of measuring medium. - The measured values can be taken from the individual measuring heads or from the measuring medium flows supplied to the individual measuring heads and evaluated individually or in an integrated manner.
Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung ausführlicher erläutert. Es zeigen
- Fig. 1
- das Schema einer Vorrichtung für die Durchführung des erfindungsgemäßen Verfahrens als Ansicht in Richtung der Achse eines zu bearbeitenden Ringes,
- Fig. 2
- einen Schnitt in Richtung AA durch den Gegenstand nach Fig. 1 mit einigen konstruktiven Details und
- Fig. 3
- entsprechend der Fig. 1 eine andere Ausführungsform einer erfindungsgemäßen Vorrichtung.
- Fig. 1
- the diagram of a device for performing the method according to the invention as a view in the direction of the axis of a ring to be machined,
- Fig. 2
- a section in the direction AA through the object of FIG. 1 with some constructive details and
- Fig. 3
- another embodiment of a device according to the invention.
Die in den Figuren dargestellte Vorrichtung ist zum Feinschleifen von Ringen 1 auf der Ringinnenfläche (Fig. 1 und 2) oder auf der Ringaußenfläche (Fig. 3) bestimmt.The device shown in the figures is intended for
Man erkennt zunächst eine maschinenfeste, nicht rotierende Werkstückaufnahme 2 für die zu bearbeitenden Ringe 1, wobei die Zentrierung über ein hydraulisches Zentriermittel 3 erfolgt, welches über besondere Bohrungen und Kanäle zugeführt wird, was nicht gezeichnet wurde. Nimmt man die Fig. 2 hinzu, so erkennt man, daß ein von der Werkstückaufnahme 2 aufgenommener zu bearbeitender Ring 1 über einen Treiber 4, der aus einer Welle und einer damit verbundenen Scheibe besteht, rotierend mitgenommen wird. Dazu ist außerdem eine Andrückeinrichtung erforderlich, die den zu bearbeitenden Ring gegen den Treiber drückt. Die Andrückeinrichtung wurde nicht gezeichnet.A machine-fixed,
Die zu bearbeitende Ringfläche erfährt bei einem Schleifvorgang eine berührungslose Vermessung. In den Fig. 1 und 3 erkennt man, daß dazu Meßköpfe 5 vorgesehen sind, die in radialer Richtung in bezug auf die zu bearbeitende Oberfläche einstellbar sind. Diese Einstellung kann in radialer Richtung hin und wieder zurück erfolgen, was durch Doppelpfeil angedeutet wurde. Dabei läßt sich ein sehr feiner Spalt zwischen der zu bearbeitenden Ringfläche und dem Meßkopf 5 einstellen. In den Fig. 1 und 3 wurde dieser Spalt mit erheblicher Übertreibung vergrößert dargestellt. Die Spaltweite liegt im allgemeinen im µ-Bereich. Die Meßköpfe 5 sind meßkraftkompensierend äquidistant über den Umfang der zu bearbeitenden Ringfläche verteilt. sie besitzen jeweils zumindest eine Düsenöffnung 6, aus der ein mit dem Zentriermittel übereinstimmendes hydraulisches Meßmittel austritt. Es tritt freistrahlfrei in die Meß- und Zentriermittelschicht 7 ein, die übertrieben dick gezeichnet worden ist. Sie bildet sich zwischen der zu bearbeitenden Ringfläche und jedem der Meßköpfe 5 aus.The ring surface to be machined undergoes a contactless measurement during a grinding process. 1 and 3 it can be seen that for this
In der Fig. 1 wurde angedeutet, daß die Meßköpfe 5 als Meßschuhe ausgeführt sind, deren Meßfläche krümmungsmäßig der zu bearbeitenden Ringfläche angepaßt ist. Die Düsenöffnungen 6 münden, wie die Fig. 2 zeigt, in der Meßfläche. Im Ausführungsbeispiel und nach bevorzugter Ausführungsform der Erfindung haben die Düsenöffnungen 6 aller Meßköpfe 5 den gleichen Durchmesser. Sie sind auch zur Abgabe gleicher Meßmittelmengenströme eingerichtet. In der Fig. 3 wurde angedeutet, daß die Meßköpfe auch ein in radialer Richtung verlaufendes Düsenrohr 8 aufweisen können. - Die eingangs beschriebene Verfahrensweise läßt sich mit solchen Vorrichtungen sehr einfach verwirklichen. Handelt es sich um die Bearbeitung von Wälzlagerlaufringen, so können die Meßköpfe 5 durch eine radiale Verstellung in die Laufrillen der Ringe eingeführt und in Arbeitsposition gebracht werden.In Fig. 1 it was indicated that the measuring heads 5 are designed as measuring shoes, the measuring surface of which is adapted in terms of curvature to the ring surface to be machined. As shown in FIG. 2, the
Claims (10)
wobei ein zu bearbeitender Ring von einer Werkstückaufnahme mit Zentrierung über ein hydraulisches Zentriermittel aufgenommen und von einem Treiber rotierend angetrieben wird,
wobei die zu bearbeitende Ringfläche bei einem Schleifvorgang einer Vermessung unterworfen wird und wobei der Schleifvorgang nach Maßgabe der Meßwerte der Vermessung gesteuert und/oder geregelt wird, dadurch gekennzeichnet, daß eine berührungslose Vermessung mit zumindest zwei gleichen Meßköpfen durchgeführt wird, aus denen ein mit dem Zentriermittel übereinstimmendes hydraulisches Meßmittel aus jeweils zumindest einer Düsenöffnung austritt,
daß die Meßköpfe meßkraftkompensierend äquidistant über den Umfang der zu bearbeitenden Ringfläche verteilt angeordnet werden,
und daß das hydraulische Meßmittel freistrahlfrei in die Meß- und Zentriermittelschicht eingeführt wird, die die zu bearbeitende Ringfläche mitnimmt und die sich zwischen dem Meßkopf und der Ringfläche ausbildet.Process for fine grinding rings on the outer ring surface or on the inner ring surface, in particular for fine grinding rolling bearing races,
wherein a ring to be machined is picked up by a workpiece holder with centering via a hydraulic centering means and driven in rotation by a driver,
wherein the ring surface to be machined is subjected to a measurement during a grinding process and the grinding process is controlled and / or regulated in accordance with the measurement values of the measurement, characterized in that a contactless measurement is carried out with at least two identical measuring heads, one of which with the centering means matching hydraulic measuring device emerges from at least one nozzle opening,
that the measuring heads are distributed equidistantly over the circumference of the ring surface to be machined,
and that the hydraulic measuring means is introduced free of radiation into the measuring and centering layer, which takes along the ring surface to be machined and which forms between the measuring head and the ring surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4033727 | 1990-10-24 | ||
| DE4033727A DE4033727C1 (en) | 1990-10-24 | 1990-10-24 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0482343A2 true EP0482343A2 (en) | 1992-04-29 |
| EP0482343A3 EP0482343A3 (en) | 1992-08-26 |
| EP0482343B1 EP0482343B1 (en) | 1994-08-31 |
Family
ID=6416903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91115615A Expired - Lifetime EP0482343B1 (en) | 1990-10-24 | 1991-09-14 | Process of and device for finishing rings, especially race rings for rolling bearings |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5679061A (en) |
| EP (1) | EP0482343B1 (en) |
| JP (1) | JP2530958B2 (en) |
| CZ (1) | CZ279086B6 (en) |
| DE (2) | DE4033727C1 (en) |
| RU (1) | RU2076034C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105881121A (en) * | 2013-12-16 | 2016-08-24 | 海宁奇晟轴承有限公司 | Improved bearing outer ring peripheral surface grinding machine |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19511882B4 (en) * | 1995-03-31 | 2005-01-05 | Audi Ag | Method for solidifying workpiece surfaces |
| EP1318888B1 (en) * | 2000-09-05 | 2008-11-05 | Makino, Inc. | Method and instrument for gauging a workpiece |
| CN101992413B (en) * | 2009-08-25 | 2013-04-10 | 鸿富锦精密工业（深圳）有限公司 | Grinding device |
| CN102019576B (en) * | 2009-09-11 | 2014-01-15 | 鸿富锦精密工业（深圳）有限公司 | Cambered surface grinding device |
| TW201200293A (en) * | 2010-06-24 | 2012-01-01 | Hon Hai Prec Ind Co Ltd | Polishing device |
| CN102294642B (en) * | 2010-06-25 | 2014-03-26 | 鸿富锦精密工业（深圳）有限公司 | Polishing device |
| JP5814111B2 (en) * | 2011-12-28 | 2015-11-17 | Ntn株式会社 | Machining diameter measuring device with measurement abnormality function of grinding machine |
| CN104227546B (en) * | 2014-08-13 | 2017-04-12 | 无锡市索菲机械电子有限公司 | Advancing/retracting mechanism for superfinishing head spindle of bearing raceway superfinisher and use method of advancing/retracting mechanism |
| CN108466140B (en) * | 2018-03-19 | 2020-03-17 | 洛阳Lyc轴承有限公司 | Method for machining noncircular roller path of aviation thin-wall bearing |
| ES2738949A1 (en) * | 2018-07-25 | 2020-01-27 | Morilla Antonio Garcia | Grinding Grinder (Machine-translation by Google Translate, not legally binding) |
| CN108789160B (en) * | 2018-07-30 | 2020-06-26 | 江苏亚奥精密机械有限公司 | Bearing ring processing device |
| CN111546235B (en) * | 2020-04-02 | 2021-07-06 | 清华大学 | Grinding force measuring method in internal thread grinding process |
| CN112917261B (en) * | 2021-01-21 | 2022-04-22 | 哈尔滨汽车轴承有限公司 | Bearing ring inner surface grinding device for bearing machining and manufacturing |
| CN114102288B (en) * | 2022-01-07 | 2022-10-14 | 奇精机械股份有限公司 | Batch grinding device for automobile bearings |
| CN117863065B (en) * | 2024-03-11 | 2024-05-10 | 太原理工大学 | Distributed polishing and grinding device and method for aero-engine bearing ring |
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| AT221975B (en) * | 1959-09-11 | 1962-06-25 | Ernst Thielenhaus Maschinenfab | Chuck for ring-shaped workpieces that can be attached to circular or internal grinding machines or the like |
| GB1061661A (en) * | 1965-07-27 | 1967-03-15 | John Peter Hindley | Improvements in or relating to honing tools |
| DE2826169A1 (en) * | 1977-06-15 | 1979-02-15 | Famir Int Spa | Ball race grinding machine - has gripping members shaped corresponding to machine face and with hydrostatic bearings |
| DE3109962A1 (en) * | 1981-03-14 | 1982-07-22 | Daimler-Benz Ag, 7000 Stuttgart | Honing machine |
| DD234388A1 (en) * | 1985-02-06 | 1986-04-02 | Werkzeugmasch Okt Veb | PNEUMATIC ADJUSTMENT DEVICE FOR FEINZLEHLEFING WAFER BEARINGS |
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| DE234388C (en) * | ||||
| US2143454A (en) * | 1936-11-05 | 1939-01-10 | Heald Machine Co | Honing machine |
| US2688219A (en) * | 1951-07-09 | 1954-09-07 | Robert S Taylor | Grinding or honing tool with size control gauge means |
| US2777257A (en) * | 1953-08-19 | 1957-01-15 | Barnes Drill Co | Hone with pressure actuated gage |
| DE1805307C3 (en) * | 1968-10-25 | 1975-05-15 | Maschinenfabrik Ernst Thielenhaus, 5600 Wuppertal | Grinding machine for ring-shaped workpieces |
| DE3240332A1 (en) * | 1982-10-30 | 1984-05-03 | Ernst Thielenhaus KG, 5600 Wuppertal | METHOD AND GRINDING MACHINE FOR GRINDING A SHAFT |
| CH663744A5 (en) * | 1984-09-17 | 1988-01-15 | Rene Keller Dr | DEVICE FOR GRINDING THE INTERIOR OR EXTERIOR OF A RING-SHAPED WORKPIECE. |
| DE9017919U1 (en) * | 1990-10-24 | 1992-12-17 | Ernst Thielenhaus KG, 5600 Wuppertal | Measuring device for a process for fine grinding of rings on the ring outer surface or on the ring inner surface |
-
1990
- 1990-10-24 DE DE4033727A patent/DE4033727C1/de not_active Expired - Lifetime
- 1990-10-24 DE DE9017792U patent/DE9017792U1/en not_active Expired - Lifetime
-
1991
- 1991-09-14 EP EP91115615A patent/EP0482343B1/en not_active Expired - Lifetime
- 1991-10-18 US US07/778,738 patent/US5679061A/en not_active Expired - Fee Related
- 1991-10-23 RU SU915001963A patent/RU2076034C1/en active
- 1991-10-23 CZ CS913222A patent/CZ279086B6/en unknown
- 1991-10-24 JP JP3277588A patent/JP2530958B2/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2777321A (en) * | 1953-09-29 | 1957-01-15 | Barnes Drill Co | Fluid jet size measuring device |
| AT221975B (en) * | 1959-09-11 | 1962-06-25 | Ernst Thielenhaus Maschinenfab | Chuck for ring-shaped workpieces that can be attached to circular or internal grinding machines or the like |
| GB1061661A (en) * | 1965-07-27 | 1967-03-15 | John Peter Hindley | Improvements in or relating to honing tools |
| DE2826169A1 (en) * | 1977-06-15 | 1979-02-15 | Famir Int Spa | Ball race grinding machine - has gripping members shaped corresponding to machine face and with hydrostatic bearings |
| DE3109962A1 (en) * | 1981-03-14 | 1982-07-22 | Daimler-Benz Ag, 7000 Stuttgart | Honing machine |
| DD234388A1 (en) * | 1985-02-06 | 1986-04-02 | Werkzeugmasch Okt Veb | PNEUMATIC ADJUSTMENT DEVICE FOR FEINZLEHLEFING WAFER BEARINGS |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105881121A (en) * | 2013-12-16 | 2016-08-24 | 海宁奇晟轴承有限公司 | Improved bearing outer ring peripheral surface grinding machine |
| CN105881121B (en) * | 2013-12-16 | 2018-01-12 | 海宁奇晟轴承有限公司 | A kind of outer peripheral face sander of improved bearing outer ring |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0482343B1 (en) | 1994-08-31 |
| CS322291A3 (en) | 1992-05-13 |
| RU2076034C1 (en) | 1997-03-27 |
| EP0482343A3 (en) | 1992-08-26 |
| DE9017792U1 (en) | 1992-01-16 |
| US5679061A (en) | 1997-10-21 |
| JPH05131352A (en) | 1993-05-28 |
| JP2530958B2 (en) | 1996-09-04 |
| CZ279086B6 (en) | 1994-12-15 |
| DE4033727C1 (en) | 1992-02-20 |
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