EP3867008A1 - Device and method for producing at least one rolling element and method for processing at least one control wheel of the device - Google Patents

Device and method for producing at least one rolling element and method for processing at least one control wheel of the device

Info

Publication number
EP3867008A1
EP3867008A1 EP19801193.4A EP19801193A EP3867008A1 EP 3867008 A1 EP3867008 A1 EP 3867008A1 EP 19801193 A EP19801193 A EP 19801193A EP 3867008 A1 EP3867008 A1 EP 3867008A1
Authority
EP
European Patent Office
Prior art keywords
grinding
rolling element
wheel
peripheral
dressing
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.)
Granted
Application number
EP19801193.4A
Other languages
German (de)
French (fr)
Other versions
EP3867008B1 (en
Inventor
Werner Heuer
Holger PÄTZOLD
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP3867008A1 publication Critical patent/EP3867008A1/en
Application granted granted Critical
Publication of EP3867008B1 publication Critical patent/EP3867008B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/37—Single-purpose machines or devices for grinding rolls, e.g. barrel-shaped rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • 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
    • B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
    • 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
    • B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
    • B24B5/26—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work for grinding peculiarly profiled surfaces, e.g. bulged
    • 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
    • B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
    • B24B5/307—Means for supporting work
    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
    • B24B53/08—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like
    • B24B53/081—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like by means of a template

Definitions

  • the invention relates to a device for producing a curved outer surface on a rolling element for a rolling bearing with the features of the preamble of claim 1 and a method for producing the curved outer surface on the rolling element with the features of claim 7.
  • the invention also relates to a method for Processing at least one regulating wheel of the device with the features of claim 8.
  • Lateral surfaces of rolling elements e.g. Rolls are usually processed by grinding. It is known to use a grinding device with a curved grinding surface for grinding, as disclosed, for example, in document CN 103 821 828 A.
  • the invention has for its object to provide an alternative device and an alternative method for producing a curved outer surface on a rolling element.
  • This object is achieved by a device with the features of claim 1, by a method for producing the curved lateral surface with the features of claim 7 and by a method for machining at least one regulating disk of the device with the features of claim 8.
  • Preferred or advantageous embodiments of the invention result from the subclaims of the following description and / or the attached figures.
  • a device which is designed to produce a curved, in particular spherical, surface on a rolling element for a rolling bearing.
  • the rolling element is preferably designed as a tapered roller which can be integrated in a tapered roller bearing.
  • the device comprises a grinding device which is designed for grinding the curved lateral surface on the rolling element.
  • the grinding device is preferably designed as a grinding wheel with a concavely profiled peripheral grinding surface.
  • the device comprises at least one folding device, which is designed to fold the rolling element during and / or during grinding work by the grinding device.
  • the folding device is also designed to feed the rolling element to the grinding device.
  • the at least one folding device is designed as at least one regulating disk with a convexly profiled circumferential feed surface.
  • the device preferably has a plurality of regulating disks which are arranged adjacent to one another and / or are connected to one another in a rotationally fixed manner for the simultaneous production of a plurality of rolling bodies with the curved lateral surface.
  • the tapered roller In the arrangement of the tapered roller on a so-called flocking disc as a folding device for grinding the outer surface, a possible curvature or crowning of the outer surface is limited in terms of production technology, in particular due to the dead weight of the tapered roller. As a result, the tapered roller can only be manufactured with geometric restrictions.
  • An advantage of the convex profiled circumferential feed surface of the at least one regulating disk is that these restrictions when the rolling element is arranged on the convex profiled circumferential feed surface in order to grind the curved surface, overcome it and / or reduce it.
  • the at least one regulating disk and / or the convexly profiled circumferential feed surface is / are formed from a ceramic, synthetic resin-bonded or metallic material.
  • the peripheral feed surface in particular if it is formed from the ceramic or synthetic resin-bonded material, by at least one dressing device of the device, e.g. can be profiled convexly by one or more dressing devices.
  • the device comprises a control device which is designed to control the at least one dressing device.
  • the control device can be an NC control.
  • the at least one dressing device is in particular designed and provided to dress the grinding device, in particular to profile, calibrate and / or sharpen the peripheral grinding surface of the grinding wheel.
  • the dressing device is designed as a rotatable dressing roller or as a standing dressing tool.
  • the at least one dressing device has a coating of diamond or boron nitride (CBN), so that material can be removed from the holding device and the grinding device and the convex or concave profile can thereby be introduced.
  • CBN boron nitride
  • the at least one dressing device is provided not only for dressing the grinding device, but also for profiling the holding device, there is advantageously no need for an additional processing machine for processing the peripheral feed surface, for example a grinding or hard turning machine. Complex handling of the regulating wheel from the additional processing machine to the device can thereby be avoided. This can result in cost savings.
  • the folding device in particular the at least one regulating disk, is formed from the metallic material, it is preferred that the convex profile is introduced on the feed peripheral surface of the at least one regulating disk by wire EDM.
  • Another object of the invention is a method for producing a curved, in particular crowned, outer surface on a rolling element for a rolling bearing with the device according to the previous description and / or according to claims 1 to 6.
  • the rolling element is arranged on the convexly profiled circumferential feed surface of the at least one regulating disk.
  • the rolling element is preferably fed to the grinding device in this way.
  • the curved outer surface is then ground, in particular by means of the concave profiled peripheral grinding surface of the grinding wheel. It is preferred within the scope of the method that the at least one regulating wheel and the grinding wheel are rotated and / or rotate in opposite directions during the grinding of the curved lateral surface.
  • a method for processing the at least one control disc forms a further subject of the invention.
  • the peripheral feed surface of the at least one regulating wheel is machined and / or profiled convexly by means of the dressing device of the device, in particular if the at least one regulating wheel and / or the peripheral feed surface is / are formed from the ceramic or resin-bonded material.
  • the control device preferably controls the dressing device to convexly profile the peripheral feed surface of the at least one regulating wheel.
  • the circumferential feed surface of the at least one regulating wheel is machined and / or convexly by wire EDM is profiled. This is particularly the case if the at least one control disc and / or the peripheral feed surface is / are formed from the metal-bonded material.
  • FIG. 1 shows a device from the prior art with a floe roller as
  • Figure 2 shows a device with a regulating wheel as a feed and folding device and with a grinding device for producing a rolling element with a curved outer surface.
  • FIG. 1 shows a device 50 from the prior art, which is designed to produce a curved, in particular spherical surface 52 on a tapered roller 51.
  • the device 50 comprises a grinding device 53 and a plurality of rotatable flipper rollers 55 which are arranged in a row adjacent to one another and rotate together. Each flipper roller 55 has two flippers 56 in a longitudinal section, on which the tapered roller 51 rests.
  • the grinding device 53 is designed as a rotatable grinding wheel with a grinding surface 54. The grinding wheel and the floe rollers 55 rotate in opposite directions.
  • Each floe roller 55 forms a folding device for exactly one tapered roller 51, which is arranged on the floe roller 55 and is thereby brought into contact with the grinding surface 54.
  • the tapered roller 51 rotates with the flipper roller 55 and is thereby ground through the grinding surface 54 of the grinding wheel, so that the curved outer surface 52 is produced.
  • a curvature or crowning of the lateral surface 52 on the tapered roller 51 that can be produced is limited in terms of production technology with the device 50 from the prior art, in particular due to the arrangement on the hump roller 55 and because of the dead weight of the tapered roller. Geometric restrictions in the curvature or crowning of the lateral surface must therefore be accepted.
  • FIG. 2 shows a device 1 which is designed for the production of a curved, in particular spherical, outer surface 3 on a rolling element 2 for a rolling bearing.
  • the rolling element is designed as a tapered roller 2.
  • the device 1 can be used to reduce or even overcome the manufacturing restrictions of the device 50 from FIG.
  • the device 1 comprises a grinding device 4, which is designed as a grinding wheel 7 rotatable in a first direction of rotation R1.
  • the grinding device 4 has a concavely profiled peripheral grinding surface 5 with which the curved outer surface 3 can be ground on the tapered roller 2.
  • the device 1 comprises a holding device 6 for holding the tapered roller 2 during the grinding of the curved outer surface 4.
  • the holding device 6 is designed as a plurality of rotatable regulating disks 8 which are arranged in a row adjacent to one another.
  • the regulating disks are rotatably mounted and rotate together in a second direction of rotation R2, which is opposite to the first direction of rotation R1.
  • Each regulating disc 8 has a convexly profiled circumferential feed surface 9, on which the tapered roller 2 can be arranged and can be stored.
  • Each regulating disk 8 and / or each circumferential feed surface 8 is formed from a ceramic, synthetic resin-bonded or metallic material. Due to the mounting on the convexly profiled circumferential feed surface 9, the curved, in particular spherical, outer surface 3 on the tapered roller 2 can be manufactured largely geometrically without restrictions.
  • the device 1 comprises a dressing device 10 for dressing the grinding device 4 and the holding device 6.
  • the dressing device 10 is designed as a standing dressing device. Alternatively, it can be designed as a rotating dressing device.
  • the device 1 also comprises a control device 11 for controlling the dressing device 10.
  • the control device 11 can e.g. be designed as an NC control.
  • the dressing device 10 is provided to profile, sharpen and / or calibrate the peripheral grinding surface 5 of the grinding wheel 7. To avoid blunting, this can also be done while grinding the outer surface 3 of the tapered roller 2.
  • the dressing device 10 is provided for convex profiling of the peripheral feed surface 9 of the regulating wheel 8, in particular if the regulating wheel 8 and / or the peripheral feed surface 9 is / are formed from the ceramic or synthetic resin-bonded material.
  • the convex profiling of the circumferential feed surface 9 by the dressing device 10 takes place before the control disk 8 is used in the device 1 as the holding device 6.
  • the concave profile is introduced into the peripheral feed surface 9 of the regulating wheel 8 by wire EDM.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Rolling Contact Bearings (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

A device (1) for producing a curved lateral surface (3) on a rolling element (2) for a rolling element bearing, comprising a grinding apparatus (4) for grinding the curved lateral surface (3) and at least one retaining apparatus (6) for retaining the rolling element (2) in the case of and/or during grinding by means of the grinding apparatus (4), the at least one retaining apparatus (6) being at least one control wheel (8) having a convexly profiled peripheral feeding surface (9).

Description

Vorrichtung und Verfahren zur Fertigung mindestens eines Wälzkörpers und Verfahren zur Bearbeitung mindestens einer Regelscheibe der Vorrichtung  Device and method for manufacturing at least one rolling element and method for processing at least one regulating disk of the device
Die Erfindung betrifft eine Vorrichtung zur Fertigung einer gekrümmten Mantelfläche an einem Wälzkörper für ein Wälzlager mit den Merkmalen des Oberbegriffs des Anspruchs 1 und ein Verfahren zur Fertigung der der gekrümmten Mantelfläche an dem Wälzkörper mit den Merkmalen des Anspruchs 7. Die Erfindung betrifft auch ein Verfahren zur Bearbeitung mindestens einer Regelscheibe der Vorrichtung mit den Merkmalen des Anspruchs 8. The invention relates to a device for producing a curved outer surface on a rolling element for a rolling bearing with the features of the preamble of claim 1 and a method for producing the curved outer surface on the rolling element with the features of claim 7. The invention also relates to a method for Processing at least one regulating wheel of the device with the features of claim 8.
Mantelflächen von Wälzkörpern, z.B. Rollen, werden üblicherweise schleifend bearbeitet. Es ist bekannt, zum Schleifen eine Schleifeinrichtung mit einer gekrümmten Schleiffläche einzusetzen, wie es beispielsweise in der Druckschrift CN 103 821 828 A offenbart ist. Lateral surfaces of rolling elements, e.g. Rolls are usually processed by grinding. It is known to use a grinding device with a curved grinding surface for grinding, as disclosed, for example, in document CN 103 821 828 A.
Zur Fertigung von Nadelrollen mit einer gekrümmten Mantelflächen wird in der Druckschrift CN 105 033 786 A vorgeschlagen, die Nadelrollen auf einer gekrümmten Platte anzuordnen und zu schleifen. For the production of needle rollers with a curved outer surface, it is proposed in CN 105 033 786 A to arrange and grind the needle rollers on a curved plate.
Es ist auch bekannt, eine Kegelrolle auf einer sogenannten Flöckerscheibe anzuordnen und diese dadurch einer Schleifscheibe zum Schleifen einer gekrümmten Mantelfläche zuzuführen. It is also known to arrange a tapered roller on a so-called flocking disc and thereby to feed it to a grinding disc for grinding a curved outer surface.
Der Erfindung liegt die Aufgabe zugrunde, eine alternative Vorrichtung und ein alternatives Verfahren zur Fertigung einer gekrümmten Mantelfläche an einem Wälzkörper bereitzustellen. Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 , durch ein Verfahren zur Fertigung der gekrümmten Mantelfläche mit den Merkmalen des Anspruchs 7 und durch ein Verfahren zur Bearbeitung mindestens einer Regelscheibe der Vorrichtung mit den Merkmalen des Anspruchs 8 gelöst. Bevorzugte oder vorteilhafte Ausführungsformen der Erfindung ergeben sich aus den Unteransprüchen der nachfolgenden Beschreibung und/oder den beigefügten Figuren. The invention has for its object to provide an alternative device and an alternative method for producing a curved outer surface on a rolling element. This object is achieved by a device with the features of claim 1, by a method for producing the curved lateral surface with the features of claim 7 and by a method for machining at least one regulating disk of the device with the features of claim 8. Preferred or advantageous embodiments of the invention result from the subclaims of the following description and / or the attached figures.
Es wird eine Vorrichtung vorgeschlagen, die zur Fertigung einer gekrümmten, insbesondere balligen Mantelfläche, an einem Wälzkörper für ein Wälzlager ausgebildet ist. Vorzugsweise ist der Wälzkörper als eine Kegelrolle ausgebildet, die in einem Kegelrollenlager integrierbar ist. A device is proposed which is designed to produce a curved, in particular spherical, surface on a rolling element for a rolling bearing. The rolling element is preferably designed as a tapered roller which can be integrated in a tapered roller bearing.
Die Vorrichtung umfasst eine Schleifeinrichtung, die zum Schleifen der gekrümmten Mantelfläche an dem Wälzkörper ausgebildet ist. Vorzugsweise ist die Schleifeinrichtung als eine Schleifscheibe mit einer konkav profilierten Umfangsschleiffläche ausgebildet. The device comprises a grinding device which is designed for grinding the curved lateral surface on the rolling element. The grinding device is preferably designed as a grinding wheel with a concavely profiled peripheral grinding surface.
Weiterhin umfasst die Vorrichtung mindestens eine Flalteeinrichtung, die zum Flalten des Wälzkörpers bei und/oder während einer Schleifbearbeitung durch die Schleifeinrichtung ausgebildet ist. Optional ergänzend ist die Flalteeinrichtung auch zur Zuführung des Wälzkörpers zu der Schleifeinrichtung ausgebildet. Furthermore, the device comprises at least one folding device, which is designed to fold the rolling element during and / or during grinding work by the grinding device. Optionally, in addition, the folding device is also designed to feed the rolling element to the grinding device.
Die mindestens eine Flalteeinrichtung ist als mindestens eine Regelscheibe mit einer konvex profilierten Umfangszuführfläche ausgebildet. Bevorzugt weist die Vorrichtung mehrere benachbart zueinander angeordnete und/oder drehfest miteinander verbundene Regelscheiben zur gleichzeitigen Fertigung mehrerer Wälzkörper mit der gekrümmten Mantelfläche auf. The at least one folding device is designed as at least one regulating disk with a convexly profiled circumferential feed surface. The device preferably has a plurality of regulating disks which are arranged adjacent to one another and / or are connected to one another in a rotationally fixed manner for the simultaneous production of a plurality of rolling bodies with the curved lateral surface.
Bei der Anordnung der Kegelrolle auf einer sogenannten Flöckerscheibe als Flalteeinrichtung zum Schleifen der Mantelfläche ist eine mögliche Krümmung oder Balligkeit der Mantelfläche, insbesondere aufgrund eines Eigengewichts der Kegelrolle, fertigungstechnisch beschränkt. Dadurch kann die Kegelrolle nur mit geometrischen Einschränkungen gefertigt werden. In the arrangement of the tapered roller on a so-called flocking disc as a folding device for grinding the outer surface, a possible curvature or crowning of the outer surface is limited in terms of production technology, in particular due to the dead weight of the tapered roller. As a result, the tapered roller can only be manufactured with geometric restrictions.
Vorteilhaft an der konvex profilierten Umfangszuführfläche der mindestens einen Regelscheibe ist, dass diese Einschränkungen bei Anordnung des Wälzkörpers auf der konvex profilierten Umfangszuführfläche, um die Mantelfläche gekrümmt zu schleifen, überwunden und/oder reduziert werden können. An advantage of the convex profiled circumferential feed surface of the at least one regulating disk is that these restrictions when the rolling element is arranged on the convex profiled circumferential feed surface in order to grind the curved surface, overcome it and / or reduce it.
Beispielsweise ist/sind die mindestens eine Regelscheibe und/oder die konvex profilierte Umfangszuführfläche aus einem keramischen, kunstharzgebundenen oder metallischen Werkstoff gebildet. Dies hat den Vorteil, dass die Umfangszuführfläche, insbesondere wenn sie aus dem keramischen oder kunstharzgebundenen Werkstoff gebildet ist, durch mindestens eine Abrichteinrichtung der Vorrichtung, z.B. durch eine oder mehrere Abrichteinrichtungen, konvex profiliert werden kann. Zum Abrichten der Halteeinrichtung, insbesondere der mindestens einen Regelscheibe, umfasst die Vorrichtung in einer bevorzugten Ausführungsform der Erfindung eine Steuerungseinrichtung, die zur Ansteuerung der mindestens einen Abrichteinrichtung ausgebildet ist. Insbesondere kann es sich bei der Steuerungseinrichtung um eine NC- Steuerung handeln. For example, the at least one regulating disk and / or the convexly profiled circumferential feed surface is / are formed from a ceramic, synthetic resin-bonded or metallic material. This has the advantage that the peripheral feed surface, in particular if it is formed from the ceramic or synthetic resin-bonded material, by at least one dressing device of the device, e.g. can be profiled convexly by one or more dressing devices. For dressing the holding device, in particular the at least one regulating wheel, in a preferred embodiment of the invention the device comprises a control device which is designed to control the at least one dressing device. In particular, the control device can be an NC control.
Die mindestens eine Abrichteinrichtung ist insbesondere dazu ausgebildet und vorgesehen, die Schleifeinrichtung abzurichten, insbesondere die Umfangsschleiffläche der Schleifscheibe konkav zu profilieren, zu kalibrieren und/oder zu schärfen. Beispielsweise ist die Abrichteinrichtung als eine rotierbare Abrichtrolle oder als ein stehendes Abrichtwerkzeug ausgebildet. Optional weist die mindestens eine Abrichteinrichtung einen Belag aus Diamant oder Bornitrid (CBN) auf, sodass Material an der Halteeinrichtung und an der Schleifeinrichtung abgetragen werden kann und dadurch das konvexe bzw. konkave Profil eingebracht werden kann. The at least one dressing device is in particular designed and provided to dress the grinding device, in particular to profile, calibrate and / or sharpen the peripheral grinding surface of the grinding wheel. For example, the dressing device is designed as a rotatable dressing roller or as a standing dressing tool. Optionally, the at least one dressing device has a coating of diamond or boron nitride (CBN), so that material can be removed from the holding device and the grinding device and the convex or concave profile can thereby be introduced.
Dadurch dass die mindestens eine Abrichteinrichtung nicht nur zum Abrichten der Schleifeinrichtung vorgesehen ist, sondern auch zur Profilierung der Halteeinrichtung, kann in vorteilhafter weise auf eine zusätzliche Bearbeitungsmaschine zur Bearbeitung der Umfangzuführfläche, z.B. auf eine Schleif- oder Hartdrehmaschine, verzichtet werden. Ein aufwendiges Handling der Regelscheibe von der zusätzlichen Bearbeitungsmaschine zu der Vorrichtung kann dadurch vermieden werden. Dies kann folglich zu Kosteneinsparungen führen. Für den Fall, dass die Flalteeinrichtung, insbesondere die mindestens eine Regelscheibe, aus dem metallischen Werkstoff gebildet ist, ist es bevorzugt, dass das konvexe Profil an der Zuführumfangsfläche der mindestens einen Regelscheibe durch Drahterodieren eingebracht ist. Because the at least one dressing device is provided not only for dressing the grinding device, but also for profiling the holding device, there is advantageously no need for an additional processing machine for processing the peripheral feed surface, for example a grinding or hard turning machine. Complex handling of the regulating wheel from the additional processing machine to the device can thereby be avoided. This can result in cost savings. In the event that the folding device, in particular the at least one regulating disk, is formed from the metallic material, it is preferred that the convex profile is introduced on the feed peripheral surface of the at least one regulating disk by wire EDM.
Einen weiteren Gegenstand der Erfindung bildet ein Verfahren zur Fertigung einer gekrümmten, insbesondere balligen Mantelfläche an einem Wälzkörper für ein Wälzlager mit der Vorrichtung nach der bisherigen Beschreibung und/oder nach den Ansprüchen 1 bis 6. Another object of the invention is a method for producing a curved, in particular crowned, outer surface on a rolling element for a rolling bearing with the device according to the previous description and / or according to claims 1 to 6.
Im Rahmen des Verfahrens wird der Wälzkörper auf der konvex profilierten Umfangszuführfläche der mindestens einen Regelscheibe angeordnet. Vorzugsweise wird der Wälzkörper auf diese Weise der Schleifeinrichtung zugeführt. Die gekrümmte Mantelfläche wird sodann geschliffen, dies insbesondere mittels der konkav profilierten Umfangsschleiffläche der Schleifscheibe. Bevorzugt ist im Rahmen des Verfahrens, dass die mindestens eine Regelscheibe und die Schleifscheibe während des Schleifens der gekrümmten Mantelfläche gegenläufig rotiert werden und/oder rotieren. As part of the method, the rolling element is arranged on the convexly profiled circumferential feed surface of the at least one regulating disk. The rolling element is preferably fed to the grinding device in this way. The curved outer surface is then ground, in particular by means of the concave profiled peripheral grinding surface of the grinding wheel. It is preferred within the scope of the method that the at least one regulating wheel and the grinding wheel are rotated and / or rotate in opposite directions during the grinding of the curved lateral surface.
Ein Verfahren zur Bearbeitung der mindestens einen Regescheibe, wie sie in der bisherigen Beschreibung und/oder in einem der Ansprüche 1 bis 6 beschrieben ist, bildet einen weiteren Gegenstand der Erfindung. A method for processing the at least one control disc, as described in the previous description and / or in one of claims 1 to 6, forms a further subject of the invention.
Im Rahmen des Verfahrens wird die Umfangszuführfläche der mindestens einen Regelscheibe mittels der Abrichteinrichtung der Vorrichtung bearbeitet und/oder konvex profiliert, insbesondere wenn die mindestens eine Regelscheibe und/oder die Umfangszuführfläche aus dem keramischen oder kunstharzgebundenen Werkstoff gebildet ist/sind. Vorzugsweise steuert die Steuerungseinrichtung die Abrichteinrichtung dazu an, die Umfangszuführfläche der mindestens einen Regelscheibe konvex zu profilieren. In the context of the method, the peripheral feed surface of the at least one regulating wheel is machined and / or profiled convexly by means of the dressing device of the device, in particular if the at least one regulating wheel and / or the peripheral feed surface is / are formed from the ceramic or resin-bonded material. The control device preferably controls the dressing device to convexly profile the peripheral feed surface of the at least one regulating wheel.
Alternativ ist es im Rahmen des Verfahrens möglich, dass die Umfangszuführfläche der mindestens einen Regelscheibe durch Drahterodieren bearbeitet und/oder konvex profiliert wird. Dies ist insbesondere dann der Fall, wenn die mindestens eine Regescheibe und/oder die Umfangszuführfläche aus dem metallgebundenen Werkstoff gebildet ist/sind. Alternatively, it is possible within the scope of the method that the circumferential feed surface of the at least one regulating wheel is machined and / or convexly by wire EDM is profiled. This is particularly the case if the at least one control disc and / or the peripheral feed surface is / are formed from the metal-bonded material.
Weitere Merkmale, Vorteile und Wirkungen der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele der Erfindung. Dabei zeigen: Further features, advantages and effects of the invention result from the following description of preferred exemplary embodiments of the invention. Show:
Figur 1 eine Vorrichtung aus dem Stand der Technik mit einer Flöckerwalze als 1 shows a device from the prior art with a floe roller as
Zuführ- und Flaltevorrichtung und einer Schleifeinrichtung zur Fertigung einer Kegelrolle mit einer gekrümmten Mantelfläche;  Feeding and folding device and a grinding device for producing a tapered roller with a curved lateral surface;
Figur 2 eine Vorrichtung mit einer Regelscheibe als Zuführ- und Flaltevorrichtung und mit einer Schleifeinrichtung zur Fertigung eines Wälzkörpers mit einer gekrümmten Mantelfläche. Figure 2 shows a device with a regulating wheel as a feed and folding device and with a grinding device for producing a rolling element with a curved outer surface.
In Figur 1 ist eine Vorrichtung 50 aus dem Stand der Technik dargestellt, die zur Fertigung einer gekrümmten, insbesondere balligen Mantelfläche 52 an einer Kegelrolle 51 ausgebildet ist. Die Vorrichtung 50 umfasst eine Schleifeinrichtung 53 und mehrere rotierbare Flöckerwalzen 55, die benachbart zueinander in einer Reihe angeordnet sind und gemeinsam rotieren. Jede Flöckerwalze 55 weist in einem Längsschnitt zwei Flöcker 56 auf, auf denen die Kegelrolle 51 aufliegt. Die Schleifeinrichtung 53 ist als eine rotierbare Schleifscheibe mit einer Schleiffläche 54 ausgebildet. Die Schleifscheibe und die Flöckerwalzen 55 rotieren in gegenläufige Richtungen. FIG. 1 shows a device 50 from the prior art, which is designed to produce a curved, in particular spherical surface 52 on a tapered roller 51. The device 50 comprises a grinding device 53 and a plurality of rotatable flipper rollers 55 which are arranged in a row adjacent to one another and rotate together. Each flipper roller 55 has two flippers 56 in a longitudinal section, on which the tapered roller 51 rests. The grinding device 53 is designed as a rotatable grinding wheel with a grinding surface 54. The grinding wheel and the floe rollers 55 rotate in opposite directions.
Jede Flöckerwalze 55 bildet eine Flalteeinrichtungen für genau eine Kegelrolle 51 , die auf der Flöckerwalze 55 angeordnet ist und dadurch mit der Schleiffläche 54 in Kontakt gebracht ist. Die Kegelrolle 51 rotiert mit der Flöckerwalze 55 und wird dabei durch die Schleiffläche 54 der Schleifscheibe geschliffen, sodass die gekrümmte Mantelfläche 52 gefertigt wird. Eine herstellbare Krümmung oder Balligkeit der Mantelfläche 52 an der Kegelrolle 51 ist mit der Vorrichtung 50 aus dem Stand der Technik fertigungstechnisch, insbesondere aufgrund der Anordnung auf der Höckerwalze 55 und aufgrund eines Eigengewichts der Kegelrolle, beschränkt. Es müssen deshalb geometrische Einschränkungen bei der Krümmung oder Balligkeit der Mantelfläche hingenommen werden. Each floe roller 55 forms a folding device for exactly one tapered roller 51, which is arranged on the floe roller 55 and is thereby brought into contact with the grinding surface 54. The tapered roller 51 rotates with the flipper roller 55 and is thereby ground through the grinding surface 54 of the grinding wheel, so that the curved outer surface 52 is produced. A curvature or crowning of the lateral surface 52 on the tapered roller 51 that can be produced is limited in terms of production technology with the device 50 from the prior art, in particular due to the arrangement on the hump roller 55 and because of the dead weight of the tapered roller. Geometric restrictions in the curvature or crowning of the lateral surface must therefore be accepted.
In Figur 2 ist eine Vorrichtung 1 gezeigt, die zur Fertigung einer gekrümmten, insbesondere balligen Mantelfläche 3 an einem Wälzkörper 2 für ein Wälzlager ausgebildet ist. Der Wälzkörper ist als eine Kegelrolle 2 ausgebildet. Mit der Vorrichtung 1 können die fertigungstechnischen Einschränkungen der Vorrichtung 50 aus Figur 1 reduziert oder sogar überwunden werden. FIG. 2 shows a device 1 which is designed for the production of a curved, in particular spherical, outer surface 3 on a rolling element 2 for a rolling bearing. The rolling element is designed as a tapered roller 2. The device 1 can be used to reduce or even overcome the manufacturing restrictions of the device 50 from FIG.
Die Vorrichtung 1 umfasst eine Schleifeinrichtung 4, die als eine in eine erste Rotationsrichtung R1 rotierbare Schleifscheibe 7 ausgebildet ist. Die Schleifeinrichtung 4 weist eine konkav profilierte Umfangsschleiffläche 5 auf, mit der die gekrümmte Mantelfläche 3 an der Kegelrolle 2 geschliffen werden kann. The device 1 comprises a grinding device 4, which is designed as a grinding wheel 7 rotatable in a first direction of rotation R1. The grinding device 4 has a concavely profiled peripheral grinding surface 5 with which the curved outer surface 3 can be ground on the tapered roller 2.
Die Vorrichtung 1 umfasst eine Halteeinrichtung 6 zum Halten der Kegelrolle 2 während des Schleifens der gekrümmten Mantelfläche 4. The device 1 comprises a holding device 6 for holding the tapered roller 2 during the grinding of the curved outer surface 4.
Die Halteeinrichtung 6 ist als eine Mehrzahl an rotierbaren Regelscheiben 8 ausgebildet, die benachbart zueinander in einer Reihe angeordnet sind. Die Regelscheiben sind rotierbar gelagert und rotieren gemeinsam in eine zweite Rotationsrichtung R2, die entgegengesetzt zu der ersten Rotationsrichtung R1 gerichtet ist. Jede Regelscheibe 8 weist eine konvex profilierte Umfangszuführfläche 9 auf, auf der die Kegelrolle 2 anordbar ist und gelagert werden kann. Jede Regelscheibe 8 und/oder jede Umfangszuführfläche 8 ist aus einem keramischen, kunstharzgebundenen oder metallischen Werkstoff gebildet ist. Aufgrund der Lagerung auf der konvex profilierten Umfangszuführfläche 9 kann die gekrümmte, insbesondere ballige, Mantelfläche 3 an der Kegelrolle 2 weitestgehend geometrisch einschränkungsfrei gefertigt werden. The holding device 6 is designed as a plurality of rotatable regulating disks 8 which are arranged in a row adjacent to one another. The regulating disks are rotatably mounted and rotate together in a second direction of rotation R2, which is opposite to the first direction of rotation R1. Each regulating disc 8 has a convexly profiled circumferential feed surface 9, on which the tapered roller 2 can be arranged and can be stored. Each regulating disk 8 and / or each circumferential feed surface 8 is formed from a ceramic, synthetic resin-bonded or metallic material. Due to the mounting on the convexly profiled circumferential feed surface 9, the curved, in particular spherical, outer surface 3 on the tapered roller 2 can be manufactured largely geometrically without restrictions.
Wie in Figur 3 gezeigt, umfasst die Vorrichtung 1 eine Abrichteinrichtung 10 zum Abrichten der Schleifeinrichtung 4 und der Halteeinrichtung 6. Die Abrichteinrichtung 10 ist als eine stehende Abrichteinrichtung ausgebildet. Sie kann alternativ als eine rotierende Abrichteinrichtung ausgebildet sein. Die Vorrichtung 1 umfasst außerdem eine Steuereinrichtung 1 1 zur Ansteuerung der Abrichteinrichtung 10. Die Steuereinrichtung 1 1 kann z.B. als eine NC-Steuerung ausgebildet sein. As shown in FIG. 3, the device 1 comprises a dressing device 10 for dressing the grinding device 4 and the holding device 6. The dressing device 10 is designed as a standing dressing device. Alternatively, it can be designed as a rotating dressing device. The device 1 also comprises a control device 11 for controlling the dressing device 10. The control device 11 can e.g. be designed as an NC control.
Die Abrichteinrichtung 10 ist dazu vorgesehen, die Umfangsschleiffläche 5 der Schleifscheibe 7 zu profilieren, zu schärfen und/oder zu kalibrieren. Dies kann zur Vermeidung einer Abstumpfung auch während des Schleifens der Mantelfläche 3 der Kegelrolle 2 erfolgen. The dressing device 10 is provided to profile, sharpen and / or calibrate the peripheral grinding surface 5 of the grinding wheel 7. To avoid blunting, this can also be done while grinding the outer surface 3 of the tapered roller 2.
Außerdem ist die Abrichteinrichtung 10 dazu vorgesehen, die Umfangszuführfläche 9 der Regelscheibe 8 konvex zu profilieren, insbesondere wenn die Regelscheibe 8 und/oder die Umfangszuführfläche 9 aus dem keramischen oder kunstharzgebundenen Werkstoff gebildet ist/sind. Die konvexe Profilierung der Umfangszuführfläche 9 durch die Abrichteinrichtung 10 erfolgt vor dem Einsatz der Regelscheibe 8 in der Vorrichtung 1 als die Halteeinrichtung 6. In addition, the dressing device 10 is provided for convex profiling of the peripheral feed surface 9 of the regulating wheel 8, in particular if the regulating wheel 8 and / or the peripheral feed surface 9 is / are formed from the ceramic or synthetic resin-bonded material. The convex profiling of the circumferential feed surface 9 by the dressing device 10 takes place before the control disk 8 is used in the device 1 as the holding device 6.
Vorteilhaft ist, dass zur Profilierung der Umfangszuführfläche 9 keine zusätzliche Bearbeitungsmaschine, z.B. Schleif- oder Hartdrehmaschine, benötigt wird, sondern die bereits vorhandene Abrichteinrichtung 10 eingesetzt werden kann. Dies spart Kosten für die Anschaffung der zusätzlichen Bearbeitungsmaschine und verringert in vorteilhafter Weise einen Handlings- und Verwaltungsaufwand für die Profilierung der Umfangszuführfläche 9 der Regelscheibe 8 und für den Transport der Halteeinrichtung 6 zu der Vorrichtung 1 . Durch den Einsatz von keramischen - bzw. kunstharzgebundenen Regelscheiben können fremderregte Schwingungen, die prozessbedingt im Kraftdreieck Schleifscheibe - Regelscheibe - Auflageschiene entstehen, eliminiert werden. Hierbei wirkt die Regelscheibe als dämpfendes Glied, was den Einsatz von keramisch gebunden Schleifscheiben ermöglicht. It is advantageous that no additional processing machine, for example a grinding or hard turning machine, is required for profiling the circumferential feed surface 9, but the dressing device 10 already present can be used. This saves costs for the purchase of the additional processing machine and advantageously reduces the handling and administrative effort for profiling the peripheral feed surface 9 of the regulating wheel 8 and for transporting the holding device 6 to the device 1. With the use of ceramic or synthetic resin-bonded regulating disks, externally excited vibrations, which occur due to the process in the force triangle grinding wheel - regulating wheel - support rail, can be eliminated. The regulating wheel acts as a damping link, which enables the use of ceramic-bonded grinding wheels.
Für den Fall, dass die Regelscheibe 8 und/oder die Umfangszuführfläche 8 aus dem metallgebundenen Material gebildet ist/sind, wird das konkave Profil durch Drahterodieren in die Umfangszuführfläche 9 der Regelscheibe 8 eingebracht. In the event that the regulating wheel 8 and / or the peripheral feed surface 8 is / are formed from the metal-bound material, the concave profile is introduced into the peripheral feed surface 9 of the regulating wheel 8 by wire EDM.
Bezuqszeichenliste Reference list
1 Vorrichtung 1 device
2 Kegelrolle, Wälzkörper  2 tapered roller, rolling elements
3 Mantelfläche  3 outer surface
4 Schleifeinrichtung  4 grinding device
5 konkav profilierte Umfangsschleiffläche 5 concave circumferential grinding surfaces
6 Halteeinrichtung 6 holding device
7 Schleifscheibe  7 grinding wheel
8 Regelscheibe  8 regulating wheel
9 konvex profilierte Umfangszuführfläche 9 convex circumferential feed surface
10 Abrichteinrichtung 10 dressing device
11 Steuerungseinrichtung  11 control device
50 Vorrichtung aus dem Stand der Technik50 device from the prior art
51 Kegelrolle 51 tapered roller
52 Mantelfläche  52 lateral surface
53 Schleifeinrichtung  53 grinding device
54 Schleiffläche  54 grinding surface
55 Höckerwalze  55 bump roller
56 Höcker  56 humps
R1 erste Rotationsrichtung R1 first direction of rotation
R2 zweite Rotationsrichtung  R2 second direction of rotation

Claims

Patentansprüche Claims
1. Vorrichtung (1 ) zur Fertigung einer gekrümmten Mantelfläche (3) an einem Wälzkörper (2) für ein Wälzlager, mit einer Schleifeinrichtung (4) zum Schleifen der gekrümmten Mantelfläche (3) und mit mindestens einer Halteeinrichtung (6) zum Halten des Wälzkörpers (2) bei und/oder während einer Schleifbearbeitung durch die Schleifeinrichtung (4), wobei die mindestens eine Halteeinrichtung (6) mindestens eine Regelscheibe (8) mit einer konvex profilierten Umfangszuführfläche (9) ist. 1. Device (1) for producing a curved outer surface (3) on a rolling element (2) for a rolling bearing, with a grinding device (4) for grinding the curved outer surface (3) and with at least one holding device (6) for holding the rolling element (2) during and / or during grinding work by the grinding device (4), the at least one holding device (6) being at least one regulating wheel (8) with a convexly profiled circumferential feed surface (9).
2. Vorrichtung (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass die mindestens eine Regelscheibe (8) und/oder die Umfangszuführfläche (9) aus einem keramischen, kunstharzgebundenen oder metallischen Werkstoff gebildet ist. 2. Device (1) according to claim 1, characterized in that the at least one regulating disc (8) and / or the circumferential feed surface (9) is formed from a ceramic, synthetic resin-bonded or metallic material.
3. Vorrichtung (1 ) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Schleifeinrichtung (4) eine Schleifscheibe (7) mit einer konkav profilierten Umfangsschleiffläche (5) ist. 3. Device (1) according to claim 1 or 2, characterized in that the grinding device (4) is a grinding wheel (7) with a concavely profiled peripheral grinding surface (5).
4. Vorrichtung (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Vorrichtung mindestens eine Abrichteinrichtung (10) zum Schärfen und/oder Kalibrieren der Umfangsschleiffläche (5) der Schleifscheibe (7) und/oder zum Profilieren der Umfangsschleiffläche (5) der Schleifscheibe (7) und/oder der Umfangszuführfläche (9) der mindestens einen Regelscheibe (8) umfasst. 4. Device (1) according to one of the preceding claims, characterized in that the device at least one dressing device (10) for sharpening and / or calibrating the peripheral grinding surface (5) of the grinding wheel (7) and / or for profiling the peripheral grinding surface (5) the grinding wheel (7) and / or the peripheral feed surface (9) of the at least one regulating wheel (8).
5. Vorrichtung (1 ) nach Anspruch 4, dadurch gekennzeichnet, dass die Umfangsschleiffläche (5) der Schleifscheibe (7) mittels der mindestens einen Abrichteinrichtung (10) konkav profiliert ist und/oder dass die Umfangszuführfläche (9) der mindestens einen Regelscheibe (8) mittels der mindestens einen Abrichteinrichtung (10) konvex profiliert ist. 5. The device (1) according to claim 4, characterized in that the peripheral grinding surface (5) of the grinding wheel (7) is concavely profiled by means of the at least one dressing device (10) and / or that the peripheral feed surface (9) of the at least one control wheel (8 ) is profiled convexly by means of the at least one dressing device (10).
6. Vorrichtung (1 ) nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Vorrichtung (1 ) eine Steuerungseinrichtung (11 ) zur Ansteuerung der mindestens einen Abrichteinrichtung (10) umfasst. 6. The device (1) according to claim 4 or 5, characterized in that the device (1) comprises a control device (11) for controlling the at least one dressing device (10).
7. Verfahren zur Fertigung einer gekrümmten Mantelfläche (3) an einem Wälzkörper (2) für ein Wälzlager mit der Vorrichtung (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Wälzkörper (2) auf der konvex profilierten Umfangszuführfläche (9) der mindestens einen Regelscheibe (8) angeordnet wird und dass an dem Wälzkörper (2) die gekrümmte Mantelfläche (3) geschliffen wird. 7. A method for producing a curved lateral surface (3) on a rolling element (2) for a rolling bearing with the device (1) according to one of the preceding claims, characterized in that the rolling element (2) on the convexly profiled peripheral feed surface (9) at least one regulating disc (8) is arranged and that the curved outer surface (3) is ground on the rolling element (2).
8. Verfahren zu Bearbeitung der mindestens einen Regelscheibe (8) nach Anspruch 7, dadurch gekennzeichnet, dass die Umfangszuführfläche (9) der mindestens einen Regelscheibe (8) mittels der mindestens einen Abrichteinrichtung (10) bearbeitet und/oder konvex profiliert wird. 8. The method for machining the at least one regulating wheel (8) according to claim 7, characterized in that the circumferential feed surface (9) of the at least one regulating wheel (8) is machined and / or convexly profiled by means of the at least one dressing device (10).
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass die Steuerungseinrichtung (11 ) die mindestens eine Abrichteinrichtung (10) dazu ansteuert, die Umfangszuführfläche (9) der mindestens einen Regelscheibe (8) konvex zu profilieren. 9. The method according to claim 8, characterized in that the control device (11) controls the at least one dressing device (10) to convexly profile the circumferential feed surface (9) of the at least one regulating wheel (8).
10. Verfahren nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Umfangszuführfläche (8) der mindestens einen Regelscheibe (8) durch Drahterodieren bearbeitet und/oder konvex profiliert wird. 10. The method according to claim 8 or 9, characterized in that the circumferential feed surface (8) of the at least one regulating wheel (8) is machined by wire EDM and / or is convexly profiled.
EP19801193.4A 2018-10-18 2019-10-16 Device and method for producing at least one rolling element and method for processing at least one control wheel of the device Active EP3867008B1 (en)

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