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EP1807243A1 - Method for machining rotation pieces - Google Patents

Method for machining rotation pieces

Info

Publication number
EP1807243A1
EP1807243A1 EP05779355A EP05779355A EP1807243A1 EP 1807243 A1 EP1807243 A1 EP 1807243A1 EP 05779355 A EP05779355 A EP 05779355A EP 05779355 A EP05779355 A EP 05779355A EP 1807243 A1 EP1807243 A1 EP 1807243A1
Authority
EP
European Patent Office
Prior art keywords
grinding
workpiece
crankshaft
clamping
carried out
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
EP05779355A
Other languages
German (de)
French (fr)
Other versions
EP1807243B1 (en
Inventor
Peter Reim
Werner Huettig
August Baumann
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.)
Erwin Junker Maschinenfabrik GmbH
Original Assignee
Erwin Junker Maschinenfabrik GmbH
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 Erwin Junker Maschinenfabrik GmbH filed Critical Erwin Junker Maschinenfabrik GmbH
Publication of EP1807243A1 publication Critical patent/EP1807243A1/en
Application granted granted Critical
Publication of EP1807243B1 publication Critical patent/EP1807243B1/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
    • B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49286—Crankshaft making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303752—Process
    • Y10T409/303808—Process including infeeding

Definitions

  • the present invention relates to a method for machining rotary parts comprising at least one working step in which at least one surface of the workpiece clamped in a device is ground.
  • the object of the present invention is to simplify a method for machining rotary parts of the aforementioned type in order to reduce the manufacturing costs while achieving high process reliability while maintaining workpieces with a high quality standard.
  • the workpiece can be clamped at least at both ends in a clamping device and, for the drilling process, the clamping device can be released at at least one end and a chuck for a drilling tool can be arranged there. which then drills the desired face hole.
  • At least one fine bore or precision bore is preferably introduced into the face of the workpiece.
  • a clamping device at least at one end of the clamping an additional guidance of the workpiece is created on the circumference by means of a suitable guide element, for example a guide bezel.
  • the grinding process carried out on the tool in the clamping device preferably comprises at least one CBN grinding by means of a grinding wheel.
  • crankshafts have generally been produced with a high level of production effort, regardless of the performance class.
  • the fitting bearings of almost all crankshafts are turned and rolled using a separate machine or work sequence.
  • this work sequence of turning and deep rolling the fitting bearings can be omitted and replaced by grinding the fitting bearings.
  • This grinding of the fitting bearings can take place, for example, in the flange-pin grinding operation which is carried out in any case. In this way, the manufacturing costs in the manufacture of such rotary parts, in particular crankshafts, can be significantly reduced.
  • crankshafts are usually finished, regardless of the requirements placed on the crankshaft.
  • the main, pin bearing, flange and journal of the crankshaft are polished.
  • this polishing step can be omitted and replaced by a suitable grinding process, in particular by CBN grinding.
  • roughnesses of, for example, around 2 ⁇ m can be achieved.
  • further finenesses for R z can be achieved, for example if problems occur in the area of an oil channel bore, a groove in the bearing or the like. If the finishing of the rotary component, in particular in the case of crankshafts, is omitted, this likewise leads to a further considerable reduction in the first 11 costs.
  • the present invention furthermore relates to a rotary component, in particular a crankshaft, which was produced by a method of the aforementioned type.
  • a rotary component in particular a crankshaft, which was produced by a method of the aforementioned type.
  • Figure 1 is a schematic simplified view of a crankshaft clamped for different operations.
  • FIG. 2 shows an enlarged detailed view of a detail II from FIG. 1.
  • FIG. 1 The illustration schematically shows a machine for machining rotary parts, in particular crankshafts, in a highly simplified manner.
  • This machine comprises a first drive unit 17 and a second drive unit 16, so that the rotary part 10 can be machined from both ends.
  • a clamping device is provided, comprising a first chuck 11 for clamping the rotating part 10 at one end and a second chuck 12 for clamping the rotating part at its other end, the clamping device being designed such that the drive units 16, 17 do that Rotating part 10 can be rotated about its axis 18.
  • the machine according to the invention has a guide bezel 14, which provides guidance or support on the circumference of the workpiece.
  • Fig. 1 shows the crankshaft 10 clamped for a grinding process, which is clamped at both ends via the chuck 11, 12.
  • a grinding wheel 15 can be used for the grinding process, for example, which can be driven rotatably about an axis 19 and which can be fed in the direction of the workpiece 10 by means of a suitable device 20 (see double arrow in FIG. 1).
  • FIG. 2 shows an enlarged detail in the left end region of the crankshaft 10. It can be seen that the chuck 1 1 has been withdrawn, the clamping elements 11 a having been released, so that the original clamping on the left end of the crankshaft 10 in the drawing no longer given is. You can see too by comparison with FIG. 1 that a certain distance between the chuck 11 and the end face 21 of the crankshaft is given by the retraction of the chuck 11. A tool, for example a fine boring tool 13, can now be clamped into the specially designed chuck 11, which introduces a precision bore on the end face into the flange 22 of the crankshaft 10.
  • the guide steady 14 now serves to support the crankshaft 10 in this end region.
  • the clamping in the second chuck 12 is also retained when machining with the fine boring tool 13, as shown in FIG. 1 .
  • drilling can be carried out simply by advancing fine boring tool 13.
  • the fine boring tool is withdrawn, it is removed from the chuck 11 and, if necessary, the crankshaft 10 can be clamped again via the clamping elements 11a for further machining operations, for example Grinding the surface or the like.
  • the advantage of the method according to the invention is therefore that operations on the surface, such as grinding and drilling operations in the end region, can in principle be carried out in the same machine in the same clamping.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Turning (AREA)
  • Forging (AREA)
  • Supercharger (AREA)
  • Gripping On Spindles (AREA)

Abstract

The invention relates to a method for machining rotation pieces, comprising at least one working step, wherein at least one surface of the workpiece which is clamped in the device is ground. According to the invention, at least one front-sided boring is carried out by means of a boring tool in the workpiece (10) which is clamped for the grinding step, said grinding step being carried out in the same clamping device (11, 12).

Description

Beschreibung description
„Verfahren zur Bearbeitung von Rotationsteilen""Process for machining rotating parts"
Die vorliegende Erfindung betrifft ein Verfahren zur Bearbeitung von Rotationsteilen umfassend mindestens einen Arbeitsschritt, in dem ein Schleifen mindestens einer Fläche des in einer Vorrichtung eingespannten Werkstücks erfolgt.The present invention relates to a method for machining rotary parts comprising at least one working step in which at least one surface of the workpiece clamped in a device is ground.
Die Bearbeitung von Rotationsteilen, beispielsweise Kurbelwellen oder dergleichen in der Automobilindustrie ist mit hohem Fertigungsaufwand verbunden. In der Regel werden alle relevanten Flächen eines solchen Rotationsteils mindestens einem Schleifarbeitsgang unterzogen. Andere Arbeitsgänge an dem Werkstück, wie beispielsweise das Einbringen einer stirnseitigen Bohrung erfordern bei Rotationsteilen der genannten Art, beispielsweise Kurbelwellen eine hohe Präzision. Das Einbringen einer solchen Bohrung erfolgte daher bislang in einer separaten Sondermaschine. Nach dem Stand der Technik ist somit für einen solchen Arbeitsgang eine Sondermaschine, eine eigene Arbeitsfolge und damit verbunden das erneute Einspannen des Werkstücks notwendig. Dies führt zu hohen Investitions- und Fertigungskosten.The machining of rotating parts, for example crankshafts or the like in the automotive industry, is associated with high manufacturing costs. As a rule, all relevant surfaces of such a rotating part are subjected to at least one grinding operation. Other operations on the workpiece, such as, for example, the introduction of an end hole, require high precision in the case of rotating parts of the type mentioned, for example crankshafts. So far, such a hole has been drilled in a separate special machine. According to the state of the art, a special machine, a separate work sequence and the associated reclamping of the workpiece are necessary for such an operation. This leads to high investment and manufacturing costs.
Die Aufgabe der vorliegenden Erfindung besteht darin, ein Verfahren zur Bearbeitung von Rotationsteilen der vorgenannten Gattung zu vereinfachen, zur Senkung der Fertigungskosten bei Erzielung einer hohen Prozesssicherheit unter Erhalt von Werkstücken mit hohem Qualitätsstandard.The object of the present invention is to simplify a method for machining rotary parts of the aforementioned type in order to reduce the manufacturing costs while achieving high process reliability while maintaining workpieces with a high quality standard.
Die Lösung dieser Aufgabe liefert ein erfindungsgemäßes Verfahren zur Bearbeitung von Rotationsteilen der eingangs genannten Gattung mit dem kennzeichnenden Merkmal des Hauptanspruchs. Erfindungsgemäß ist vorgesehen, dass in das für den Schleifvorgang eingespannte Werkstück in der gleichen Einspannvorrichtung mittels eines Bohrwerkzeugs mindestens eine stirnseitige Bohrung eingebracht wird. Erfindungsgemäß ist somit ein erneutes Einspannen des Werkstücks in einer dazu vorgesehenen Sondermaschine mit eigener Arbeitsfolge nicht mehr notwendig. Das Bohren, zum Beispiel das Einbringen einer stirnseitigen Passbohrung in ein Rotationsteil, beispielsweise in einen Kurbelwellenflansch erfolgt in der gleichen Einspannvorrichtung, in der auch der Schleifvorgang erfolgt. Dies kann in einer dazu geeigneten Einspannvorrichtung erfolgen. Beispielsweise kann man während eines Schleifvorgangs das Werkstück mindestens jeweils an beiden Enden in einer Einspannvorrichtung einspannen und für den Bohrvorgang die Einspannvorrichtung an mindestens einem Ende lösen und dort ein Spannfutter für ein Bohrwerkzeug anordnen, welches dann die gewünschte stirnseitige Bohrung ausführt. Vorzugsweise wird in das Werkstück stirnseitig mindestens eine Feinbohrung beziehungsweise Präzisionsbohrung eingebracht.The solution to this problem is provided by a method according to the invention for machining rotary parts of the type mentioned at the outset with the characterizing feature of the main claim. According to the invention it is provided that at least one end-side bore is made in the workpiece clamped for the grinding process in the same clamping device by means of a drilling tool. According to the invention, it is therefore no longer necessary to clamp the workpiece in a special machine provided for this purpose, with its own work sequence. The drilling, for example the introduction of an end fitting bore into a rotary part, for example into a crankshaft flange, takes place in the same clamping device in which the grinding process also takes place. This can be done in a suitable clamping device. For example, during a grinding process, the workpiece can be clamped at least at both ends in a clamping device and, for the drilling process, the clamping device can be released at at least one end and a chuck for a drilling tool can be arranged there. which then drills the desired face hole. At least one fine bore or precision bore is preferably introduced into the face of the workpiece.
Gemäß einer bevorzugten Weiterbildung der Erfindung kann man vorsehen, dass nach Lösen einer Spannvorrichtung mindestens an einem Ende der Einspannung eine zusätzliche Führung des Werkstücks am Umfang geschaffen wird durch ein dazu geeignetes Führungselement, beispielsweise eine Führungslünette. Der in der Einspannvorrichtung an dem Werkzeug vorgenommene Schleifvorgang umfasst vorzugsweise mindestens ein CBN-Schleifen mittels einer Schleifscheibe.According to a preferred development of the invention, it can be provided that after loosening a clamping device at least at one end of the clamping an additional guidance of the workpiece is created on the circumference by means of a suitable guide element, for example a guide bezel. The grinding process carried out on the tool in the clamping device preferably comprises at least one CBN grinding by means of a grinding wheel.
Bislang werden Kurbelwellen in der Regel unabhängig von der Leistungsklasse mit einem hohen Fertigungsaufwand produziert. Beispielsweise werden unter anderem die Passlager nahezu aller Kurbelwellen gedreht und festgewalzt mittels einer separaten Maschine beziehungsweise Arbeitsfolge. Gemäß einer Weiterbildung der Erfindung kann diese Arbeitsfolge des Drehens und Festwalzens der Passlager entfallen und durch Schleifen der Passlager ersetzt werden. Dieses Schleifen der Passlager kann beispielsweise in der ohnehin vorgenommenen Operation des Flansch-Zapfen-Schleifens erfolgen. Auf diese Weise lassen sich die Fertigungskosten bei der Herstellung derartiger Rotationsteile, insbesondere Kurbelwellen, erheblich senken.So far, crankshafts have generally been produced with a high level of production effort, regardless of the performance class. For example, the fitting bearings of almost all crankshafts are turned and rolled using a separate machine or work sequence. According to a development of the invention, this work sequence of turning and deep rolling the fitting bearings can be omitted and replaced by grinding the fitting bearings. This grinding of the fitting bearings can take place, for example, in the flange-pin grinding operation which is carried out in any case. In this way, the manufacturing costs in the manufacture of such rotary parts, in particular crankshafts, can be significantly reduced.
Bei Kurbelwellen erfolgt nach dem Stand der Technik in der Regel eine Finish-Bearbeitung, unabhängig von den Anforderungen an die Kurbelwelle. Dabei werden beispielsweise Haupt-, Hublager, Flansch und Zapfen der Kurbelwelle poliert. Dieser Arbeitsgang des Polierens kann gemäß einer Weiterbildung der Erfindung entfallen und durch einen geeigneten Schleifvorgang ersetzt werden, insbesondere durch CBN-Schleifen. In diesem Fall können Rauheiten von zum Beispiel in der Größenordnung von etwa 2 μm erzielt werden. Bei Optimierung können noch weitere Feinheiten für Rz erreicht werden, beispielsweise wenn Probleme auftreten im Bereich einer Ölkanalbohrung, einer Rille im Lager oder dergleichen. Wenn die Finish-Bearbeitung des Rotationsbauteils, insbesondere bei Kurbelwellen entfällt, führt dies ebenfalls zu einer weiteren erheblichen Reduzierung der H erste 11 kosten.According to the state of the art, crankshafts are usually finished, regardless of the requirements placed on the crankshaft. For example, the main, pin bearing, flange and journal of the crankshaft are polished. According to a further development of the invention, this polishing step can be omitted and replaced by a suitable grinding process, in particular by CBN grinding. In this case, roughnesses of, for example, around 2 μm can be achieved. When optimized, further finenesses for R z can be achieved, for example if problems occur in the area of an oil channel bore, a groove in the bearing or the like. If the finishing of the rotary component, in particular in the case of crankshafts, is omitted, this likewise leads to a further considerable reduction in the first 11 costs.
Gegenstand der vorliegenden Erfindung ist weiterhin ein Rotationsbauteil, insbesondere eine Kurbelwelle, welches nach einem Verfahren der vorgenannten Art hergestellt wurde. Die in den Unteransprüchen genannten Merkmale betreffen bevorzugte Weiterbildungen der erfindungsgemäßen Aufgabenlösung. Weitere Vorteile der Erfindung ergeben sich aus der nachfolgenden Detailbeschreibung.The present invention furthermore relates to a rotary component, in particular a crankshaft, which was produced by a method of the aforementioned type. The features mentioned in the subclaims relate to preferred developments of the Task solution according to the invention. Further advantages of the invention result from the following detailed description.
Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen unter Bezugnahme auf die beiliegenden Zeichnungen näher beschrieben. Dabei zeigenThe invention is described in more detail below on the basis of exemplary embodiments with reference to the accompanying drawings. Show
Fig. 1 eine schematisch vereinfachte Ansicht einer für verschiedene Arbeitsgänge eingespannten Kurbelwelle;Figure 1 is a schematic simplified view of a crankshaft clamped for different operations.
Fig. 2 eine vergrößerte Detailansicht eines Ausschnitts Il von Fig. 1.FIG. 2 shows an enlarged detailed view of a detail II from FIG. 1.
Zunächst wird auf Fig. 1 Bezug genommen. Die Darstellung zeigt schematisch stark vereinfacht eine Maschine zur Bearbeitung von Rotationsteilen, insbesondere Kurbelwellen. Diese Maschine umfasst eine erste Antriebseinheit 17, sowie eine zweite Antriebseinheit 16, so dass man das Rotationsteil 10 von beiden Enden her bearbeiten kann. Es ist weiterhin eine Einspannvorrichtung vorgesehen, umfassend ein erstes Spannfutter 11 zur Einspannung des Rotationsteils 10 an seinem einen Ende und ein zweites Spannfutter 12 zur Einspannung des Rotationsteils an seinem anderen Ende, wobei die Einspannvorrichtung so ausgebildet ist, dass mittels der Antriebseinheiten 16, 17 das Rotationsteil 10 um seine Achse 18 gedreht werden kann. Es kann sinnvoll sein, wenn zusätzliche Führungselemente vorgesehen sind zur Führung des Werkstücks beispielsweise am Umfang, insbesondere dann, wenn ein einseitiges Lösen einer der Spannvorrichtungen vorgesehen ist, um einen Bohrvorgang im stirnseitigen Bereich auszuführen. Dazu hat die erfindungsgemäße Maschine eine Führungslünette 14, die für eine Führung beziehungsweise Abstützung am Umfang des Werkstücks sorgt.First, reference is made to FIG. 1. The illustration schematically shows a machine for machining rotary parts, in particular crankshafts, in a highly simplified manner. This machine comprises a first drive unit 17 and a second drive unit 16, so that the rotary part 10 can be machined from both ends. Furthermore, a clamping device is provided, comprising a first chuck 11 for clamping the rotating part 10 at one end and a second chuck 12 for clamping the rotating part at its other end, the clamping device being designed such that the drive units 16, 17 do that Rotating part 10 can be rotated about its axis 18. It can be useful if additional guide elements are provided for guiding the workpiece, for example on the circumference, in particular if one-sided loosening of one of the clamping devices is provided in order to carry out a drilling process in the end region. For this purpose, the machine according to the invention has a guide bezel 14, which provides guidance or support on the circumference of the workpiece.
Fig. 1 zeigt die für einen Schleifvorgang eingespannte Kurbelwelle 10, die an beiden Enden über die Spannfutter 11 , 12 eingespannt ist. Für den Schleifvorgang kann beispielsweise eine Schleifscheibe 15 verwendet werden, die um eine Achse 19 rotierbar antreibbar ist und die mittels einer geeigneten Vorrichtung 20 einen Vorschub in Richtung auf das Werkstück 10 vollziehen kann (siehe Doppelpfeil in Fig. 1).Fig. 1 shows the crankshaft 10 clamped for a grinding process, which is clamped at both ends via the chuck 11, 12. A grinding wheel 15 can be used for the grinding process, for example, which can be driven rotatably about an axis 19 and which can be fed in the direction of the workpiece 10 by means of a suitable device 20 (see double arrow in FIG. 1).
Nachfolgend wird auf Fig. 2 Bezug genommen und die Bearbeitung des Werkstücks 10 von der Stirnseite her näher erläutert. Fig. 2 zeigt einen vergrößerten Detailausschnitt im linken Endbereich der Kurbelwelle 10. Man erkennt, dass das Spannfutter 1 1 zurückgezogen wurde, wobei die Spannelemente 11 a gelöst wurden, so dass an dem in der Zeichnung linken Ende der Kurbelwelle 10 die ursprüngliche Einspannung nicht mehr gegeben ist. Man sieht auch durch Vergleich mit Fig. 1 , dass durch das Zurückfahren des Spannfutters 11 eine gewisse Distanz zwischen dem Spannfutter 11 und der stirnseitigen Fläche 21 der Kurbelwelle gegeben ist. In das speziell dafür ausgebildete Spannfutter 11 kann nun ein Werkzeug, beispielsweise ein Feinbohrwerkzeug 13 eingespannt werden, welches eine stirnseitige Präzisionsbohrung in den Flansch 22 der Kurbelwelle 10 einbringt. Da die Einspannung gelöst wurde, dient die Führungslünette 14 nun in diesem Endbereich zur Abstützung der Kurbelwelle 10. In dem anderen Endbereich der Kurbelwelle 10 bleibt die Einspannung in dem zweiten Spannfutter 12 wie in Fig. 1 dargestellt auch bei dem Bearbeiten mit dem Feinbohrwerkzeug 13 erhalten. In der in Fig. 2 dargestellten Einspannposition der Kurbelwelle 10 kann das Bohren einfach durch den Vorschub des Feinbohrwerkzeugs 13 erfolgen. Nach dem Einbringen der Bohrung in die stirnseitige Fläche 21 des Flansches 22 der Kurbelwelle 10 wird das Feinbohrwerkzeug zurückgezogen, es wird aus dem Spannfutter 11 entfernt und falls dies erforderlich ist kann die Kurbelwelle 10 über die Spannelemente 11a erneut eingespannt werden für weitere Bearbeitungsvorgänge, zum Beispiel Schleifen der Oberfläche oder dergleichen. Der Vorteil des erfindungsgemäßen Verfahrens besteht somit darin, dass Arbeitsgänge an der Oberfläche wie Schleifen und Bohrvorgänge im stirnseitigen Bereich in der gleichen Maschine im Prinzip in der gleichen Einspannung erfolgen können. In the following, reference is made to FIG. 2 and the machining of the workpiece 10 is explained in more detail from the front side. Fig. 2 shows an enlarged detail in the left end region of the crankshaft 10. It can be seen that the chuck 1 1 has been withdrawn, the clamping elements 11 a having been released, so that the original clamping on the left end of the crankshaft 10 in the drawing no longer given is. You can see too by comparison with FIG. 1 that a certain distance between the chuck 11 and the end face 21 of the crankshaft is given by the retraction of the chuck 11. A tool, for example a fine boring tool 13, can now be clamped into the specially designed chuck 11, which introduces a precision bore on the end face into the flange 22 of the crankshaft 10. Since the clamping has been released, the guide steady 14 now serves to support the crankshaft 10 in this end region. In the other end region of the crankshaft 10, the clamping in the second chuck 12 is also retained when machining with the fine boring tool 13, as shown in FIG. 1 . In the clamping position of crankshaft 10 shown in FIG. 2, drilling can be carried out simply by advancing fine boring tool 13. After the hole has been drilled into the end face 21 of the flange 22 of the crankshaft 10, the fine boring tool is withdrawn, it is removed from the chuck 11 and, if necessary, the crankshaft 10 can be clamped again via the clamping elements 11a for further machining operations, for example Grinding the surface or the like. The advantage of the method according to the invention is therefore that operations on the surface, such as grinding and drilling operations in the end region, can in principle be carried out in the same machine in the same clamping.
BezugszeichenlisteReference symbol list
10 Werkstück10 workpiece
11 Einspannvorrichtung11 clamping device
11a Spannelemente11a clamping elements
12 Einspannvorrichtung12 clamping device
13 Bohrwerkzeug13 drilling tool
14 Führungselement14 guide element
15 Schleifscheibe15 grinding wheel
16 Antriebseinheit16 drive unit
17 Antriebseinheit17 drive unit
18 Achse18 axis
19 Achse19 axis
20 Vorrichtung20 device
21 stirnseitige Fläche21 end face
22 Flansch 22 flange

Claims

Patentansprüche Claims
1. Verfahren zur Bearbeitung von Rotationsteilen umfassend mindestens einen Arbeitsschritt, in dem ein Schleifen mindestens einer Fläche des in einer Vorrichtung eingespannten Werkstücks erfolgt, dadurch gekennzeichnet, dass in das für den Schleifvorgang eingespannte Werkstück (10) in der gleichen Einspannvorrichtung (11 , 12) mittels eines Bohrwerkzeugs (13) mindestens eine stirnseitige Bohrung eingebracht wird.1. A method for machining rotating parts comprising at least one work step in which at least one surface of the workpiece clamped in a device is ground, characterized in that in the workpiece (10) clamped for the grinding process in the same clamping device (11, 12) by means of a drilling tool (13), at least one end hole is made.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass dieses mindestens einen Schleifvorgang durch CBN-Schleifen mittels einer Schleifscheibe (15) umfasst.2. The method according to claim 1, characterized in that it comprises at least one grinding operation by CBN grinding using a grinding wheel (15).
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass stirnseitig in das Werkstück mindestens eine Feinbohrung beziehungsweise Präzisionsbohrung eingebracht wird.3. The method according to claim 1 or 2, characterized in that at least one fine bore or precision bore is introduced into the face of the workpiece.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass während eines Schleifvorgangs das Werkstück mindestens jeweils an beiden Enden in einer Einspannvorrichtung, vorzugsweise jeweils in Spannfuttern eingespannt ist, für den Bohrvorgang die Einspannung an mindestens einem Ende gelöst und dort ein Spannfutter (11) für ein Bohrwerkzeug (13) angeordnet wird, welches die stirnseitige Bohrung ausführt.4. The method according to any one of claims 1 to 3, characterized in that during a grinding process the workpiece is clamped at least at both ends in a clamping device, preferably in each case in chucks, for the drilling process the clamping is released at at least one end and there is a chuck (11) for a drilling tool (13) is arranged, which carries out the front hole.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass mindestens nach Lösen einer Spannvorrichtung eine zusätzliche Führung des Werkstücks am Umfang durch ein Führungselement (14), vorzugsweise eine Führungslünette vorgesehen ist.5. The method according to claim 4, characterized in that at least after loosening a clamping device an additional guidance of the workpiece on the circumference by a guide element (14), preferably a guide bezel is provided.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das bearbeitete Rotationsteil eine Kurbelwelle ist.6. The method according to any one of claims 1 to 5, characterized in that the machined rotary part is a crankshaft.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass durch den Feinbohrschritt eine stirnseitige Passbohrung in den Kurbelwellenflansch eingebracht wird.7. The method according to claim 6, characterized in that an end fitting hole is made in the crankshaft flange by the fine boring step.
8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Bearbeitung der Oberfläche des Werkstücks durch Schleifen, vorzugsweise CBN- Schleifen unter Belassung eines gewissen Rauheitsgrads ohne nachfolgende Finishbearbeitung erfolgt.8. The method according to any one of claims 1 to 7, characterized in that the machining of the surface of the workpiece by grinding, preferably CBN Grinding takes place with a certain degree of roughness without subsequent finishing.
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass das Fertigschleifen des Werkstücks in der Vorrichtung erfolgt und ein nachfolgendes Polieren des Werkstücks nicht vorgesehen ist.9. The method according to claim 8, characterized in that the finishing of the workpiece takes place in the device and a subsequent polishing of the workpiece is not provided.
10. Verfahren nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass die Bearbeitung der Passlager der Kurbelwelle durch Schleifen in der gleichen Vorrichtung erfolgt.10. The method according to any one of claims 6 to 9, characterized in that the machining of the fitting bearing of the crankshaft is carried out by grinding in the same device.
11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass das Schleifen der Passlager im gleichen Arbeitsgang erfolgt wie das Schleifen von Flanschen und/oder Zapfen der Kurbelwelle.11. The method according to claim 10, characterized in that the grinding of the fitting bearings is carried out in the same operation as the grinding of flanges and / or pins of the crankshaft.
12. Verfahren nach Anspruch 10 oder 11 , dadurch gekennzeichnet, dass das Schleifen der Passlager ohne vorheriges Festwalzen erfolgt.12. The method according to claim 10 or 11, characterized in that the grinding of the fitting bearings is carried out without prior deep rolling.
13. Verfahren nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass das Bearbeiten aller relevanten Flächen einer Kurbelwelle in der gleichen Vorrichtung, vorzugsweise in einer Einspannung erfolgt.13. The method according to any one of claims 1 to 12, characterized in that the processing of all relevant surfaces of a crankshaft is carried out in the same device, preferably in one clamping.
14. Rotationsbauteil, insbesondere Kurbelwelle, dadurch gekennzeichnet, dass dieses nach einem Verfahren gemäß einem der Ansprüche 1 bis 13 hergestellt wurde. 14. Rotating component, in particular crankshaft, characterized in that it was produced by a method according to one of claims 1 to 13.
EP05779355A 2004-09-08 2005-09-01 Method for machining rotation pieces Active EP1807243B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004043404A DE102004043404A1 (en) 2004-09-08 2004-09-08 Method for processing rotary parts
PCT/EP2005/009433 WO2006027161A1 (en) 2004-09-08 2005-09-01 Method for machining rotation pieces

Publications (2)

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EP1807243A1 true EP1807243A1 (en) 2007-07-18
EP1807243B1 EP1807243B1 (en) 2008-04-09

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US (1) US7507147B2 (en)
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JP (1) JP5022899B2 (en)
KR (1) KR101218376B1 (en)
CN (1) CN101022919A (en)
AT (1) ATE391580T1 (en)
DE (2) DE102004043404A1 (en)
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WO (1) WO2006027161A1 (en)

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RU2359802C2 (en) 2009-06-27
JP5022899B2 (en) 2012-09-12
ATE391580T1 (en) 2008-04-15
KR20070052298A (en) 2007-05-21
US20080102736A1 (en) 2008-05-01
WO2006027161A1 (en) 2006-03-16
KR101218376B1 (en) 2013-01-02
EP1807243B1 (en) 2008-04-09
CN101022919A (en) 2007-08-22
DE502005003683D1 (en) 2008-05-21
RU2007112910A (en) 2008-10-20
US7507147B2 (en) 2009-03-24
JP2008512255A (en) 2008-04-24
ES2304712T3 (en) 2008-10-16
DE102004043404A1 (en) 2006-03-09

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