EP4149717B1 - Device and method for grinding and honing, and use of the device - Google Patents

Device and method for grinding and honing, and use of the device Download PDF

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Publication number
EP4149717B1
EP4149717B1 EP21722762.8A EP21722762A EP4149717B1 EP 4149717 B1 EP4149717 B1 EP 4149717B1 EP 21722762 A EP21722762 A EP 21722762A EP 4149717 B1 EP4149717 B1 EP 4149717B1
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EP
European Patent Office
Prior art keywords
honing
workpiece
grinding
honing stone
insertion guide
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EP21722762.8A
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German (de)
French (fr)
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EP4149717A1 (en
Inventor
Tobias KRONACHER
Frank JOCHMANN
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Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/18—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
    • B24B5/22—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 cylindrical surfaces, e.g. on bolts
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/04—Honing machines or devices; Accessories therefor designed for working external surfaces of revolution

Definitions

  • the invention relates to a method for grinding and subsequent honing of a workpiece.
  • the invention further relates to a device for carrying out a combined grinding and honing process.
  • the DE 41 24 454 A1 discloses a device for grinding and honing in one setting.
  • a grinding unit and a short-stroke honing unit are arranged either parallel to each other or on a rotary indexing table.
  • a roller tensioning device with tension rollers and a support shoe should be suitable for clamping the workpiece.
  • a workpiece holding device for combined grinding and honing is available in the DE 40 05 911 C1 described.
  • a rolling bearing outer ring is machined as a workpiece.
  • a receptacle for grinding is designed as a sliding shoe receptacle and is arranged offset from a receptacle for honing. Between the two processing steps of grinding and honing, the workpiece is moved axially from the grinding clamping to the honing clamping by means of a spindle that drives the workpiece during grinding.
  • the DE 860 468 B discloses a device for centerless grinding of cylindrical surfaces, it being assumed that an arrangement in which the workpiece is guided by a driving control wheel and a support ruler during grinding has proven successful for external grinding.
  • the support ruler can be replaced by a support roller.
  • One of the guide bodies can be designed as a drive roller.
  • a method for centerless oblique plunge grinding is, for example, in DE 199 40 685 A1 described. This method is used to machine a workpiece that has two cylindrical sections that are connected to each other by a conical section.
  • the invention is based on the object of further developing the grinding and honing processing of workpieces compared to the stated prior art, with the aim of particularly efficient and process-reliable processing under the conditions of series production.
  • the grinding and honing device comprises a grinding wheel, a control wheel, which drives a workpiece, a piercing ruler provided for guiding the rotating workpiece, and a honing stone holder, which is adjustable on the piercing ruler and is used to hold a honing stone with which the workpiece can be processed.
  • the axis of rotation of the grinding wheel is arranged above the axis of rotation of the control wheel, so that overall it is referred to as a vertical device.
  • the centerless grinding and combined honing device may be constructed in a horizontal manner.
  • the terms “honing stone holder” and “honing stone” are to be interpreted broadly. Accordingly, “honing stone holder” is to be understood as any device which presses an element used for honing, for example a honing belt, against the workpiece surface.
  • the workpiece is therefore driven during grinding and honing by one and the same element, namely the regulating wheel.
  • a separate honing machine is not required.
  • the honing stone can be applied to the rotating workpiece when the processing by the grinding wheel has not yet been completely completed, especially during sparking out. It is also possible to use the honing stone already to be pressed onto the workpiece if the finishing process by the grinding wheel has not yet been completed.
  • the positioning of the honing stone holder remains unchanged during honing.
  • Process variants can also be implemented in which the honing stone oscillates in the longitudinal direction of the rotating workpiece during honing. Such an oscillation can be accomplished, for example, by pneumatic, hydraulic or mechanical devices.
  • the honing stone holder can be pivotably attached to the puncture ruler.
  • the honing stone arm can ensure that the honing stone is spaced from the workpiece surface during grinding.
  • the later pressing of the honing stone onto the workpiece surface against the spring force can be done, for example, with the help of a pneumatic or electromechanical actuator.
  • a pocket can be formed by the puncture ruler to hold the workpiece, the honing stone holder being intended to hold a honing stone through an opening in a wall of the pocket against the workpiece to press.
  • a particularly uniform honing of a rotationally symmetrical workpiece rotating about its own central axis is provided in configurations in which the honing stone can be freely tilted about a tilting axis which is arranged parallel to the pivoting axis of the honing stone holder.
  • the free tiltability does not refer to any restrictions on the tilting angle, but rather to the fact that no separate means are provided that generate a tilting movement of the honing stone are. Rather, the tilt angle is set automatically as the honing stone lies against the workpiece surface.
  • the grinding and honing device is particularly suitable for processing rolling elements. These are, for example, cylindrical rollers, tapered rollers or barrel rollers. Multi-part processing is optional. In such a case, a puncture ruler can be designed to guide several workpieces at the same time. In the case of multi-part machining, honing can be done either with a single honing stone for all workpieces being processed at the same time or with one honing stone per workpiece. In both cases, several workpieces are simultaneously honed, with these workpieces having previously been subjected to grinding - also at the same time. In all cases, very fine workpiece surfaces can be produced, which can otherwise only be produced with the help of a separate honing machine.
  • a grinding and honing device marked overall with the reference number 1, comprises a grinding unit 2, which in the exemplary embodiment is constructed as a vertical machine.
  • a puncture ruler 3 is part of the grinding and honing device 1 and is arranged between a grinding wheel 4 and a regulating wheel 5 during grinding operation.
  • a workpiece 8, which can be a rolling element, is guided in the puncture ruler 3, the workpiece 8 being driven by the control disk 5, that is to say set in rotation.
  • the workpiece 8 is arbitrarily shown with a stepped diameter.
  • the machine frame of the grinding and honing device 1, which is only shown in outline, is designated 6.
  • the reference number 7 denotes a vertically aligned mounting plate, in front of which the grinding wheel 4 as well as the regulating wheel 5 are arranged.
  • the axes of rotation of the control wheel 5 and the grinding wheel 4 are aligned horizontally, with the axis of rotation of the grinding wheel 4 being above the axis of rotation of the control wheel 5.
  • the puncture ruler 3 is used not only when grinding the workpiece 8, but also during subsequent honing.
  • the puncture ruler 3 has a honing stone holder 9, which is also referred to as a honing stone arm.
  • a honing stone stored on the honing stone holder 9 is designated 10.
  • An elongated, flat base element 11 of the puncture ruler 3 is also referred to as a puncture ruler in the narrower sense.
  • the base element 11 is connected on one of its long sides to an extension element 12, which is also referred to as a pre-ruler.
  • the extension element 12 comprises a bridge element 13, which has two bridge feet 14, 15 which are firmly connected to the base element 11.
  • a center strut 16 is arranged in the middle between the bridge feet 14, 15, which protrudes at right angles from the base element 11 and is also firmly connected to it.
  • a center bolt 17 on which the honing stone arm 9 is pivotally mounted In a section of the center strut 16 that projects beyond the bridge element 13 there is a center bolt 17 on which the honing stone arm 9 is pivotally mounted.
  • the corresponding pivot axis is designated SWA and represents a surface normal to the surface in which the strip-shaped base element 11 lies.
  • the grinding is carried out while the honing stone 10 is lifted from the workpiece 8.
  • the puncture ruler 3 is displaced in such a way that the workpiece 8 loses contact with the grinding wheel 4, but continues to be driven by the regulating wheel 5.
  • a pneumatic actuator 19 which can be attributed to the puncture ruler 3, is actuated so that a piston rod 21, which is aligned approximately orthogonally to the honing stone arm 9 and to the base element 11, moves against a stop section 22 of the honing stone arm 9 and thus moves it slightly the pivot axis SWA pivots.
  • a compressed air cylinder 20 of the actuator 19 is firmly connected to the base element 11 of the puncture ruler 3. Compressed air connections are in the Figures 3 and 4 not shown.
  • the honing stone 10 is mounted on a bolt 25 in the honing stone arm 9 and penetrates a slot 24, that is, an opening, in the bridge element 13. As shown Figure 3 As can be seen, the honing stone 10 protrudes slightly into the recess 23, also known as a pocket, which is intended to hold the workpiece 8.
  • the bolt 25 forms a tilting axis KA parallel to the pivot axis SWA, which enables at least a slight tilting of the honing stone 10 relative to the honing stone arm 9, so that the honing stone 10 is pressed uniformly against the entire lateral surface of the workpiece 8 when the actuator 19 is actuated.
  • the duration of the honing process can be adjusted by the machine control of the grinding and honing device 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Schleifen und anschließenden Honen eines Werkstücks. Ferner betrifft die Erfindung eine Vorrichtung zur Durchführung eines kombinierten Schleif- und Honverfahrens.The invention relates to a method for grinding and subsequent honing of a workpiece. The invention further relates to a device for carrying out a combined grinding and honing process.

Die DE 41 24 454 A1 offenbart eine Einrichtung zum Schleifen und Honen in einer Aufspannung. Hierbei sind eine Schleifeinheit und eine Kurzhubhoneinheit entweder parallel nebeneinander oder auf einem Rundschalttisch angeordnet. Zur Spannung des Werkstücks soll unter anderem eine Rollenspanneinrichtung mit Spannrollen und einem Stützgleitschuh geeignet sein.The DE 41 24 454 A1 discloses a device for grinding and honing in one setting. Here, a grinding unit and a short-stroke honing unit are arranged either parallel to each other or on a rotary indexing table. A roller tensioning device with tension rollers and a support shoe should be suitable for clamping the workpiece.

Eine weitere Werkstückaufnahmevorrichtung zur kombinierten Schleif- und Honbearbeitung ist in der DE 40 05 911 C1 beschrieben. In diesem Fall wird ein Wälzlageraußenring als Werkstück bearbeitet. Eine Aufnahme für die Schleifbearbeitung ist als Gleitschuhaufnahme ausgebildet und gegenüber einer Aufnahme für die Honbearbeitung versetzt angeordnet. Das Werkstück wird zwischen den beiden Bearbeitungsschritten Schleifen und Honen von der Schleifaufspannung in die Honaufspannung mittels einer das Werkstück beim Schleifen antreibenden Spindel axial bewegt.Another workpiece holding device for combined grinding and honing is available in the DE 40 05 911 C1 described. In this case, a rolling bearing outer ring is machined as a workpiece. A receptacle for grinding is designed as a sliding shoe receptacle and is arranged offset from a receptacle for honing. Between the two processing steps of grinding and honing, the workpiece is moved axially from the grinding clamping to the honing clamping by means of a spindle that drives the workpiece during grinding.

Die DE 860 468 B offenbart eine Einrichtung zum Spitzenlosschleifen zylindrischer Flächen, wobei davon ausgegangen wird, dass sich für das Außenschleifen eine Anordnung bewährt hat, bei welcher das Werkstück während der Schleifbearbeitung durch eine antreibende Regelscheibe und ein Stützlineal geführt wird. Grundsätzlich ist das Stützlineal durch eine Stützrolle ersetzbar. In der DE 860 468 B wird vorgeschlagen, das Werkstück zwischen drei im Kreis um das Werkstück angeordneten Führungskörpern zu führen und zu drehen, wobei die Führungskörper in veränderbarem, aber unter sich im Wesentlichen gleichem Abstand von der Mitte des Führungssystems gehalten sind. Einer der Führungskörper kann als Treibrolle ausgebildet sein.The DE 860 468 B discloses a device for centerless grinding of cylindrical surfaces, it being assumed that an arrangement in which the workpiece is guided by a driving control wheel and a support ruler during grinding has proven successful for external grinding. In principle, the support ruler can be replaced by a support roller. In the DE 860 468 B It is proposed to guide and rotate the workpiece between three guide bodies arranged in a circle around the workpiece, the guide bodies being held at a variable but essentially equal distance from the center of the guide system. One of the guide bodies can be designed as a drive roller.

Ein Verfahren zum spitzenlosen Schräg-Einstechschleifen ist beispielsweise in der DE 199 40 685 A1 beschrieben. Mit diesem Verfahren wird ein Werkstück bearbeitet, welches zwei zylindrische Abschnitte aufweist, die durch einen konischen Abschnitt miteinander verbunden sind.A method for centerless oblique plunge grinding is, for example, in DE 199 40 685 A1 described. This method is used to machine a workpiece that has two cylindrical sections that are connected to each other by a conical section.

In der DE 195 37 855 A1 ist ein Verfahren zum Schleifen von Steuerkanten einer Brennkraftmaschine beschrieben. Hierbei ist zum spitzenlosen Schleifen der Steuerkanten des Werkstücks, hier einer Steuerbuchse, das Werkstück in Gleitschuhen aufgenommen. Gleichzeitig kontaktiert das Werkstück zwei Andrückrollen, welche auf den Stirnseiten der Schleifscheibe angeordnet sind.In the DE 195 37 855 A1 a method for grinding control edges of an internal combustion engine is described. For centerless grinding of the control edges of the workpiece, here a control bushing, the workpiece is held in sliding shoes. At the same time, the workpiece contacts two pressure rollers, which are arranged on the front sides of the grinding wheel.

Der Erfindung liegt die Aufgabe zugrunde, die Schleif- und Honbearbeitung von Werkstücken gegenüber dem genannten Stand der Technik weiterzuentwickeln, wobei unter Bedingungen der Serienfertigung eine besonders rationelle und prozesssichere Bearbeitung angestrebt wird.The invention is based on the object of further developing the grinding and honing processing of workpieces compared to the stated prior art, with the aim of particularly efficient and process-reliable processing under the conditions of series production.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine Vorrichtung zum Schleifen und Honen mit den Merkmalen des Anspruchs 1. Ebenso wird die Aufgabe gelöst durch ein Verfahren zum Schleifen und Honen gemäß Anspruch 8. Im Folgenden im Zusammenhang mit dem Schleif- und Honverfahren erläuterte Ausgestaltungen und Vorteile der Erfindung gelten sinngemäß auch für die Schleif- und Honvorrichtung und umgekehrt.This object is achieved according to the invention by a device for grinding and honing with the features of claim 1. The object is also achieved by a method for grinding and honing according to claim 8. Configurations and advantages explained below in connection with the grinding and honing method Invention also applies analogously to the grinding and honing device and vice versa.

Die Schleif- und Honvorrichtung umfasst eine Schleifscheibe, eine Regelscheibe, welche ein Werkstück antreibt, ein zur Führung des rotierenden Werkstücks vorgesehenes Einstichlineal, sowie einen Honsteinhalter, welcher verstellbar am Einstichlineal gehalten ist und der Halterung eines Honsteins dient, mit welchem das Werkstück bearbeitbar ist.The grinding and honing device comprises a grinding wheel, a control wheel, which drives a workpiece, a piercing ruler provided for guiding the rotating workpiece, and a honing stone holder, which is adjustable on the piercing ruler and is used to hold a honing stone with which the workpiece can be processed.

Was die Anordnung von Schleifscheibe und Regelscheibe im Raum betrifft, existieren keine prinzipiellen Einschränkungen. Beispielsweise ist die Rotationsachse der Schleifscheibe oberhalb der Rotationsachse der Regelscheibe angeordnet, sodass man insgesamt von einer vertikalen Vorrichtung spricht. Alternativ kann die Vorrichtung zum spitzenlosen Schleifen und kombiniertem Honen in horizontaler Weise aufgebaut sein. Die Begriffe "Honsteinhalter" und "Honstein" sind weit auszulegen. Dementsprechend ist unter "Honsteinhalter" jegliche Vorrichtung zu verstehen, welche ein zum Honen verwendetes Element, beispielsweise ein Honband, gegen die Werkstückoberfläche presst.There are no fundamental restrictions regarding the arrangement of the grinding wheel and control wheel in space. For example, the axis of rotation of the grinding wheel is arranged above the axis of rotation of the control wheel, so that overall it is referred to as a vertical device. Alternatively, the centerless grinding and combined honing device may be constructed in a horizontal manner. The terms “honing stone holder” and “honing stone” are to be interpreted broadly. Accordingly, “honing stone holder” is to be understood as any device which presses an element used for honing, for example a honing belt, against the workpiece surface.

Allgemein umfasst das Schleif- und Honverfahren folgende Schritte:

  • Bereitstellung einer Schleif- und Honvorrichtung, welche eine Schleifscheibe, eine Regelscheibe, ein zum Führen eines um seine eigene Achse rotierenden Werkstücks ausgebildetes Einstichlineal, sowie eine in das Einstichlineal integrierte Vorrichtung zum Andrücken eines Honsteins umfasst,
  • Bearbeitung eines Werkstücks durch Schleifen, indem das Werkstück im Schleifspalt zwischen der Schleifscheibe und der Regelscheibe, welche das Werkstück antreibt, mittels des Einstichlineals geführt wird,
  • zumindest geringfügige Entfernung des Werkstücks von der Schleifscheibe, wobei der Kontakt des Werkstücks zur Regelscheibe erhalten bleibt,
  • Andrücken des Honsteins gegen das im Einstichlineal geführte, durch die Regelscheibe angetriebene Werkstück.
In general, the grinding and honing process includes the following steps:
  • Provision of a grinding and honing device, which comprises a grinding wheel, a regulating wheel, a piercing ruler designed to guide a workpiece rotating about its own axis, and a device integrated into the piercing ruler for pressing a honing stone,
  • Processing a workpiece by grinding by using the plunge ruler to guide the workpiece in the grinding gap between the grinding wheel and the regulating wheel that drives the workpiece,
  • at least slight removal of the workpiece from the grinding wheel, while the workpiece remains in contact with the control wheel,
  • Pressing the honing stone against the workpiece guided in the piercing ruler and driven by the regulating wheel.

Das Werkstück wird somit bei der Schleifbearbeitung und bei der Honbearbeitung durch ein und dasselbe Element, nämlich die Regelscheibe, angetrieben. Eine gesonderte Honmaschine ist nicht erforderlich. In leicht abgewandelter Verfahrensführung kann der Honstein bereits dann an das rotierende Werkstück angelegt werden, wenn die Bearbeitung durch die Schleifscheibe noch nicht vollständig abgeschlossen ist, insbesondere während des Ausfunkens. Ebenso ist es möglich, den Honstein bereits dann an das Werkstück anzupressen, wenn eine Schlichtbearbeitung durch die Schleifscheibe noch nicht abgeschlossen ist.The workpiece is therefore driven during grinding and honing by one and the same element, namely the regulating wheel. A separate honing machine is not required. In a slightly modified procedure, the honing stone can be applied to the rotating workpiece when the processing by the grinding wheel has not yet been completely completed, especially during sparking out. It is also possible to use the honing stone already to be pressed onto the workpiece if the finishing process by the grinding wheel has not yet been completed.

Während der Honbearbeitung bleibt die Positionierung des Honsteinhalters im einfachsten Fall unverändert. Ebenso sind Verfahrensvarianten realisierbar, in welchen der Honstein während des Honens in Längsrichtung des rotierenden Werkstücks oszilliert. Eine solche Oszillation ist beispielsweise durch pneumatische, hydraulische oder mechanische Vorrichtungen bewerkstelligbar.In the simplest case, the positioning of the honing stone holder remains unchanged during honing. Process variants can also be implemented in which the honing stone oscillates in the longitudinal direction of the rotating workpiece during honing. Such an oscillation can be accomplished, for example, by pneumatic, hydraulic or mechanical devices.

Unabhängig davon, ob der Honsteinhalter lediglich zum Anpressen des Honsteins an die Werkstückoberfläche bei ansonsten unveränderter Positionierung des Honsteins vorgesehen ist, oder in Längsrichtung der Rotationsachse des Werkstücks oszilliert, kann der Honsteinhalter schwenkbar am Einstichlineal angebracht sein. In diesem Fall wird auch von einem Honsteinarm gesprochen. Durch Federbelastung des Honsteinarms kann dafür gesorgt werden, dass der Honstein während der Schleifbearbeitung von der Werkstückoberfläche beabstandet ist. Das spätere Anpressen des Honsteins an die Werkstückoberfläche gegen die Federkraft kann beispielsweise mit Hilfe eines pneumatischen oder elektromechanischen Aktuators erfolgen.Regardless of whether the honing stone holder is only intended to press the honing stone onto the workpiece surface with otherwise unchanged positioning of the honing stone, or oscillates in the longitudinal direction of the axis of rotation of the workpiece, the honing stone holder can be pivotably attached to the puncture ruler. In this case we also speak of a honing stone arm. Spring loading of the honing stone arm can ensure that the honing stone is spaced from the workpiece surface during grinding. The later pressing of the honing stone onto the workpiece surface against the spring force can be done, for example, with the help of a pneumatic or electromechanical actuator.

Um das Werkstück zunächst während der Schleifbearbeitung und anschließend während der Honbearbeitung rotierbar zu führen, kann durch das Einstichlineal eine Tasche zur Aufnahme des Werkstücks ausgebildet sein, wobei der Honsteinhalter dazu vorgesehen ist, einen Honstein durch eine Öffnung in einer Wandung der Tasche hindurch gegen das Werkstück zu drücken.In order to guide the workpiece in a rotatable manner first during the grinding process and then during the honing process, a pocket can be formed by the puncture ruler to hold the workpiece, the honing stone holder being intended to hold a honing stone through an opening in a wall of the pocket against the workpiece to press.

Eine besonders gleichmäßige Honbearbeitung eines rotationssymmetrischen, um seine eigene Mittelachse rotierenden Werkstücks ist in Ausgestaltungen gegeben, in welchen der Honstein um eine Kippachse, welche parallel zur Schwenkachse des Honsteinhalters angeordnet ist, frei kippbar ist. Die freie Kippbarkeit bezieht sich hierbei nicht auf eventuelle Beschränkungen des Kippwinkels, sondern darauf, dass keine gesonderten Mittel, welche eine Kippbewegung des Honsteins erzeugen, vorgesehen sind. Vielmehr stellt sich der Kippwinkel selbsttätig ein, indem der Honstein an der Werkstückoberfläche anliegt.A particularly uniform honing of a rotationally symmetrical workpiece rotating about its own central axis is provided in configurations in which the honing stone can be freely tilted about a tilting axis which is arranged parallel to the pivoting axis of the honing stone holder. The free tiltability does not refer to any restrictions on the tilting angle, but rather to the fact that no separate means are provided that generate a tilting movement of the honing stone are. Rather, the tilt angle is set automatically as the honing stone lies against the workpiece surface.

Die Schleif- und Honvorrichtung eignet sich besonders zur Bearbeitung von Wälzkörpern. Hierbei handelt es sich beispielsweise um Zylinderrollen, Kegelrollen oder Tonnenrollen. Optional erfolgt eine Mehrteilebearbeitung. In einem solchen Fall kann ein Einstichlineal zur gleichzeitigen Führung mehrerer Werkstücke ausgebildet sein. Das Honen kann im Fall einer Mehrteilebearbeitung entweder mit einem einzigen Honstein für sämtliche gleichzeitig in der Bearbeitung befindlichen Werkstücke oder mit einem Honstein pro Werkstück erfolgen. In beiden Fällen erfolgt ein simultanes Honen mehrerer Werkstücke, wobei diese Werkstücke zuvor - ebenfalls gleichzeitig - einer Schleifbearbeitung unterzogen wurden. In allen Fällen sind sehr feine Werkstückoberflächen herstellbar, wie sie ansonsten nur mit Hilfe einer gesonderten Honmaschine erzeugbar sind.The grinding and honing device is particularly suitable for processing rolling elements. These are, for example, cylindrical rollers, tapered rollers or barrel rollers. Multi-part processing is optional. In such a case, a puncture ruler can be designed to guide several workpieces at the same time. In the case of multi-part machining, honing can be done either with a single honing stone for all workpieces being processed at the same time or with one honing stone per workpiece. In both cases, several workpieces are simultaneously honed, with these workpieces having previously been subjected to grinding - also at the same time. In all cases, very fine workpiece surfaces can be produced, which can otherwise only be produced with the help of a separate honing machine.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher erläutert. Hierin zeigen, teils grob vereinfacht:

Fig. 1
eine Schleif- und Honvorrichtung in schematisierter perspektivischer Darstellung,
Fig. 2
die Schleif- und Honvorrichtung in Seitenansicht,
Fig. 3
ein Einstichlineal der Schleif- und Honvorrichtung in Draufsicht,
Fig. 4
das Einstichlineal mit einem eine Schleifscheibe kontaktierenden Werkstück in perspektivischer Ansicht.
An exemplary embodiment of the invention is explained in more detail below with reference to a drawing. Show here, partly simplified:
Fig. 1
a grinding and honing device in a schematic perspective view,
Fig. 2
the grinding and honing device in side view,
Fig. 3
an incision ruler of the grinding and honing device in top view,
Fig. 4
The puncture ruler with a workpiece contacting a grinding wheel in a perspective view.

Eine insgesamt mit dem Bezugszeichen 1 gekennzeichnete Schleif- und Honvorrichtung umfasst ein Schleifaggregat 2, welches im Ausführungsbeispiel als Vertikalmaschine aufgebaut ist. Ein Einstichlineal 3 ist der Schleif- und Honvorrichtung 1 zuzurechnen und im Schleifbetrieb zwischen einer Schleifscheibe 4 und einer Regelscheibe 5 angeordnet. Im Einstichlineal 3 wird ein Werkstück 8, bei welchem es sich um einen Wälzkörper handeln kann, geführt, wobei das Werkstück 8 durch die Regelscheibe 5 angetrieben, dass heißt in Rotation versetzt, wird. Das Werkstück 8 ist willkürlich mit einem gestuften Durchmesser dargestellt. Ein in den Figuren 1 und 2 lediglich andeutungsweise dargestelltes Maschinengestell der Schleif- und Honvorrichtung 1 ist mit 6 bezeichnet. Das Bezugszeichen 7 bezeichnet eine vertikal ausgerichtete Montageplatte, vor welcher die Schleifscheibe 4 ebenso wie die Regelscheibe 5 angeordnet ist. Die Rotationsachsen der Regelscheibe 5 sowie der Schleifscheibe 4 sind horizontal ausgerichtet, wobei sich die Rotationsachse der Schleifscheibe 4 oberhalb der Rotationsachse der Regelscheibe 5 befindet.A grinding and honing device, marked overall with the reference number 1, comprises a grinding unit 2, which in the exemplary embodiment is constructed as a vertical machine. A puncture ruler 3 is part of the grinding and honing device 1 and is arranged between a grinding wheel 4 and a regulating wheel 5 during grinding operation. A workpiece 8, which can be a rolling element, is guided in the puncture ruler 3, the workpiece 8 being driven by the control disk 5, that is to say set in rotation. The workpiece 8 is arbitrarily shown with a stepped diameter. One in the Figures 1 and 2 The machine frame of the grinding and honing device 1, which is only shown in outline, is designated 6. The reference number 7 denotes a vertically aligned mounting plate, in front of which the grinding wheel 4 as well as the regulating wheel 5 are arranged. The axes of rotation of the control wheel 5 and the grinding wheel 4 are aligned horizontally, with the axis of rotation of the grinding wheel 4 being above the axis of rotation of the control wheel 5.

Das Einstichlineal 3 wird nicht nur beim Schleifen des Werkstücks 8, sondern auch bei einer anschließenden Honbearbeitung genutzt. Zu diesem Zweck weist das Einstichlineal 3 einen Honsteinhalter 9 auf, der auch als Honsteinarm bezeichnet wird. Ein am Honsteinhalter 9 gelagerter Honstein ist mit 10 bezeichnet. Ein längliches, flaches Grundelement 11 des Einstichlineals 3 wird auch als Einstichlineal im engeren Sinne bezeichnet. Das Grundelement 11 ist an einer seiner Längsseiten mit einem Ansatzelement 12 verbunden, welches auch als Vorlineal bezeichnet wird. Das Ansatzelement 12 umfasst ein Brückenelement 13, welches zwei Brückenfüße 14, 15 aufweist, die fest mit dem Grundelement 11 verbunden sind. Mittig zwischen den Brückenfüßen 14, 15 ist eine Mittelstrebe 16 angeordnet, welche rechtwinklig vom Grundelement 11 absteht und ebenfalls fest mit diesem verbunden ist. In einem über das Brückenelement 13 hinausragenden Abschnitt der Mittelstrebe 16 befindet sich ein Mittelbolzen 17, an welchem der Honsteinarm 9 schwenkbar gelagert ist. Die entsprechende Schwenkachse ist mit SWA bezeichnet und stellt eine Flächennormale derjenigen Fläche dar, in welcher das streifenförmige Grundelement 11 liegt.The puncture ruler 3 is used not only when grinding the workpiece 8, but also during subsequent honing. For this purpose, the puncture ruler 3 has a honing stone holder 9, which is also referred to as a honing stone arm. A honing stone stored on the honing stone holder 9 is designated 10. An elongated, flat base element 11 of the puncture ruler 3 is also referred to as a puncture ruler in the narrower sense. The base element 11 is connected on one of its long sides to an extension element 12, which is also referred to as a pre-ruler. The extension element 12 comprises a bridge element 13, which has two bridge feet 14, 15 which are firmly connected to the base element 11. A center strut 16 is arranged in the middle between the bridge feet 14, 15, which protrudes at right angles from the base element 11 and is also firmly connected to it. In a section of the center strut 16 that projects beyond the bridge element 13 there is a center bolt 17 on which the honing stone arm 9 is pivotally mounted. The corresponding pivot axis is designated SWA and represents a surface normal to the surface in which the strip-shaped base element 11 lies.

Eine Feder 18, bei welcher es sich im Ausführungsbeispiel um eine Schraubenfeder handelt, ist derart zwischen das Brückenelement 13 und den Honsteinarm 9 gespannt, dass ein auf den Honsteinarm 9 wirkendes Drehmoment erzeugt wird, welches in Richtung eines Abhebens des Honsteins 10 vom Werkstück 8 wirkt. Hierbei wird davon ausgegangen, dass sich das Werkstück 8 in einer Aussparung 23 befindet, welche innerhalb des Einstichlineals 3 zwischen dem leistenförmigen Grundelement 11 und dem Ansatzelement 12 gebildet ist.A spring 18, which in the exemplary embodiment is a helical spring, is tensioned between the bridge element 13 and the honing stone arm 9 in such a way that a torque acting on the honing stone arm 9 is generated, which acts in the direction of lifting the honing stone 10 from the workpiece 8 . It is assumed here that the workpiece 8 is located in a recess 23, which is formed within the puncture ruler 3 between the strip-shaped base element 11 and the extension element 12.

Die Schleifbearbeitung wird durchgeführt, während der Honstein 10 vom Werkstück 8 abgehoben ist. Nachdem durch das Schleifen die Endmaßposition erreicht wurde, wird das Einstichlineal 3 derart verlagert, dass das Werkstück 8 den Kontakt zur Schleifscheibe 4 verliert, jedoch weiterhin durch die Regelscheibe 5 angetrieben wird. In diesem Zustand wird ein pneumatischer Aktuator 19, welcher dem Einstichlineal 3 zuzurechnen ist, betätigt, so dass eine Kolbenstange 21, welche etwa orthogonal zum Honsteinarm 9 sowie zum Grundelement 11 ausgerichtet ist, gegen einen Anschlagabschnitt 22 des Honsteinarms 9 fährt und diesen damit geringfügig um die Schwenkachse SWA verschwenkt. Ein Druckluftzylinder 20 des Aktuators 19 ist fest mit dem Grundelement 11 des Einstichlineals 3 verbunden. Druckluftanschlüsse sind in den Figuren 3 und 4 nicht dargestellt.The grinding is carried out while the honing stone 10 is lifted from the workpiece 8. After the final dimension position has been reached by grinding, the puncture ruler 3 is displaced in such a way that the workpiece 8 loses contact with the grinding wheel 4, but continues to be driven by the regulating wheel 5. In this state, a pneumatic actuator 19, which can be attributed to the puncture ruler 3, is actuated so that a piston rod 21, which is aligned approximately orthogonally to the honing stone arm 9 and to the base element 11, moves against a stop section 22 of the honing stone arm 9 and thus moves it slightly the pivot axis SWA pivots. A compressed air cylinder 20 of the actuator 19 is firmly connected to the base element 11 of the puncture ruler 3. Compressed air connections are in the Figures 3 and 4 not shown.

Der Honstein 10 ist an einem Bolzen 25 im Honsteinarm 9 gelagert und durchdringt einen Schlitz 24, das heißt eine Öffnung, im Brückenelement 13. Wie aus Figur 3 hervorgeht, ragt der Honstein 10 etwas in die auch als Tasche bezeichnete Aussparung 23 hinein, welche zur Aufnahme des Werkstücks 8 vorgesehen ist. Durch den Bolzen 25 ist eine zur Schwenkachse SWA parallele Kippachse KA gebildet, welche eine zumindest geringfügige Verkippung des Honsteins 10 gegenüber dem Honsteinarm 9 ermöglicht, so dass der Honstein 10 bei Betätigung des Aktuators 19 gleichförmig an die gesamte Mantelfläche des Werkstücks 8 angepresst wird. Die Dauer der Honbearbeitung ist ebenso wie andere Bearbeitungsparameter durch die Maschinensteuerung der Schleif- und Honvorrichtung 1 einstellbar.The honing stone 10 is mounted on a bolt 25 in the honing stone arm 9 and penetrates a slot 24, that is, an opening, in the bridge element 13. As shown Figure 3 As can be seen, the honing stone 10 protrudes slightly into the recess 23, also known as a pocket, which is intended to hold the workpiece 8. The bolt 25 forms a tilting axis KA parallel to the pivot axis SWA, which enables at least a slight tilting of the honing stone 10 relative to the honing stone arm 9, so that the honing stone 10 is pressed uniformly against the entire lateral surface of the workpiece 8 when the actuator 19 is actuated. The duration of the honing process, like other processing parameters, can be adjusted by the machine control of the grinding and honing device 1.

BezugszeichenlisteReference symbol list

  • 1 Schleif- und Honvorrichtung1 grinding and honing device
  • 2 Schleifaggregat2 sanding unit
  • 3 Einstichlineal3 puncture ruler
  • 4 Schleifscheibe4 grinding wheels
  • 5 Regelscheibe5 control wheel
  • 6 Maschinengestell6 machine frame
  • 7 Montageplatte7 mounting plate
  • 8 Werkstück, Wälzkörper8 workpiece, rolling elements
  • 9 Honsteinhalter, Honsteinarm9 honing stone holder, honing stone arm
  • 10 Honstein10 Honstein
  • 11 Grundelement des Einstichlineals11 Basic element of the puncture ruler
  • 12 Ansatzelement, Vorlineal12 attachment element, pre-ruler
  • 13 Brückenelement13 bridge element
  • 14 Brückenfuß14 bridge feet
  • 15 Brückenfuß15 bridge feet
  • 16 Mittelstrebe16 center strut
  • 17 Mittelbolzen17 center bolts
  • 18 Feder18 feather
  • 19 Aktuator19 actuator
  • 20 Druckluftzylinder20 compressed air cylinders
  • 21 Kolbenstange21 piston rod
  • 22 Anschlagabschnitt22 stop section
  • 23 Tasche, Aussparung im Einstichlineal für das Werkstück23 Pocket, recess in the puncture ruler for the workpiece
  • 24 Öffnung, Schlitz im Brückenelement24 opening, slot in the bridge element
  • 25 Bolzen25 bolts
  • KA KippachseKA tilt axis
  • SWA SchwenkachseSWA swivel axis

Claims (10)

  1. A device for grinding and honing, having
    - a grinding wheel (4),
    - a regulating wheel (5),
    - an insertion guide (3) provided for guiding a workpiece (8),
    - a honing stone holder (9), characterised in that the honing stone holder (9) is displaceably held on the insertion guide (3).
  2. The device according to claim 1, characterised in that the honing stone holder (9) is pivotably mounted on the insertion guide (3).
  3. The device according to claim 2, characterised in that the honing stone holder (9) is spring-loaded in a first direction and displaceable in the opposite direction by an actuator (19).
  4. The device according to claim 3, characterised in that the actuator (19) is designed as a pneumatic actuator attached to the insertion guide (3).
  5. The device according to any one of claims 2 to 4, characterised in that a pocket (23) is formed by the insertion guide (3) for receiving the workpiece (8), wherein the honing stone holder (9) is provided for pressing a honing stone (10) against the workpiece (8) through an opening (24) in a wall of the pocket (23).
  6. The device according to claim 5, characterised in that the honing stone (10) can be freely tilted about a tilt axis (KA), which is arranged parallel to the pivot axis (SWA) of the honing stone holder (9).
  7. A use of a device according to any one of claims 1 to 6 for grinding and honing a rolling element (8).
  8. A method for grinding and honing, having the following steps:
    - providing a grinding and honing device (1), which has a grinding wheel (4), a regulating wheel (5), an insertion guide (3) provided for guiding a workpiece (8), and a device integrated into the insertion guide (3) with a displaceable honing stone holder (9) for pressing a honing stone (10)
    - processing a workpiece (8) by grinding, wherein the workpiece (8) is guided in the grinding gap between the grinding wheel (4) and the regulating wheel (5), which drives the workpiece (8), using the insertion guide (3),
    - at least slightly removing the workpiece (8) from the grinding wheel (4), wherein the contact of the workpiece (8) with the regulating wheel (5) is maintained,
    - pressing the honing stone (10) against the workpiece (8) guided in the insertion guide (3) and driven by the regulating wheel (5).
  9. The method according to claim 8, characterised in that the grinding is carried out while the honing stone (10) is lifted away from the workpiece (8) by spring force.
  10. The method according to claim 9, characterised in that the honing is carried out by pneumatically pressing the honing stone (10) against the workpiece (8), which overcomes the spring force.
EP21722762.8A 2020-05-15 2021-04-16 Device and method for grinding and honing, and use of the device Active EP4149717B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020113216.6A DE102020113216A1 (en) 2020-05-15 2020-05-15 Device and method for grinding and honing and use of the device
PCT/DE2021/100354 WO2021228311A1 (en) 2020-05-15 2021-04-16 Device and method for grinding and honing, and use of the device

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EP4149717A1 EP4149717A1 (en) 2023-03-22
EP4149717B1 true EP4149717B1 (en) 2024-03-06

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EP (1) EP4149717B1 (en)
JP (1) JP7432003B2 (en)
CN (1) CN115397611A (en)
DE (1) DE102020113216A1 (en)
WO (1) WO2021228311A1 (en)

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DE3447361C2 (en) * 1984-12-24 1993-09-30 Hunger Walter Honing tool
DE4005911C1 (en) * 1990-02-24 1991-04-25 Gmn Georg Mueller Nuernberg Ag, 8500 Nuernberg, De
DE4124454A1 (en) 1991-07-24 1993-01-28 Berliner Werkzeugmasch Machine tool for grinding and honing workpieces - enables both operations to be performed in sequence at one setting of workpiece
DE19537855C2 (en) 1994-10-19 1998-01-29 Schaeffler Waelzlager Kg Method for angular positioning of a control bushing of a rotary slide valve for hydraulic steering
DE19756919A1 (en) 1997-04-01 1998-10-08 Bosch Gmbh Robert Control of internal combustion engine
JP3803506B2 (en) * 1999-05-13 2006-08-02 富士ホーニング工業株式会社 Honing method
DE19940685A1 (en) 1999-08-27 2001-03-01 Mikrosa Werkzeugmaschinen Gmbh Process for centerless oblique plunge grinding and grinding machine
DE10139894B4 (en) 2001-08-14 2009-09-10 Erwin Junker Maschinenfabrik Gmbh Method and device for centerless cylindrical grinding
CN100368150C (en) 2005-03-07 2008-02-13 贵州西南工具(集团)有限公司 Processing method of ring kind part circumcircle and its device
JP2007283472A (en) * 2006-04-20 2007-11-01 Mazda Motor Corp Honing method and apparatus therefor
JP2008183655A (en) * 2007-01-29 2008-08-14 Nisshin Seisakusho:Kk Honing method, honing stick infeed device of honing machine and honing machine
JP6488894B2 (en) 2015-06-05 2019-03-27 株式会社ジェイテクト Cylindrical workpiece grinding machine
KR101896770B1 (en) * 2016-09-02 2018-09-07 현대자동차주식회사 Honing tool device
CN108515396A (en) * 2018-04-11 2018-09-11 重庆市耀植机械有限责任公司 Part processing grinding machine
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CN108907907B (en) * 2018-08-17 2019-09-24 重庆市璧山区隆翔机械有限公司 Inner bore honing technique

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EP4149717A1 (en) 2023-03-22
JP7432003B2 (en) 2024-02-15
JP2023518321A (en) 2023-04-28
DE102020113216A1 (en) 2021-11-18
CN115397611A (en) 2022-11-25
WO2021228311A1 (en) 2021-11-18

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