EP2162260B1 - Method for grinding cams of a camshaft - Google Patents

Method for grinding cams of a camshaft Download PDF

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Publication number
EP2162260B1
EP2162260B1 EP08757924A EP08757924A EP2162260B1 EP 2162260 B1 EP2162260 B1 EP 2162260B1 EP 08757924 A EP08757924 A EP 08757924A EP 08757924 A EP08757924 A EP 08757924A EP 2162260 B1 EP2162260 B1 EP 2162260B1
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EP
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Prior art keywords
camshaft
cams
workpiece
grinding
cam
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Application number
EP08757924A
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German (de)
French (fr)
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EP2162260A1 (en
Inventor
Roland Schmitz
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EMAG Holding GmbH
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EMAG Holding GmbH
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Publication of EP2162260A1 publication Critical patent/EP2162260A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
    • B24B19/12—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding cams or camshafts
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools

Definitions

  • the invention relates to a method for grinding cams of a camshaft.
  • From the JP 2005052912 A is a machine known for finishing of camshafts.
  • a corresponding number of finishing units are arranged around the camshaft.
  • the machine is difficult for the operator to access.
  • the camshaft can not be supported with steady rests, because the space required for this is added with finishing units.
  • the machine is therefore not suitable for grinding with high removal rates.
  • multiaxial motion sequences are necessary for loading and unloading, since the camshafts inevitably have to be moved lengthwise into and out of the working area.
  • the EP 0 085 225 B1 shows a method for grinding of camshafts, wherein to achieve a uniform feed rate, the rotational speed of the camshaft is adapted to the cam contour. After this procedure, the cams are processed one by one. From the DE 10 2004 012 385 is a machine tool for machining undulating workpieces known. Turrets with driven tools, also for grinding, are provided on both sides of the workpiece spindle. For loading and unloading at least one revolver is equipped with a gripping device for workpieces.
  • the invention is based on the object to improve a method of the type described above so that a grinding machining with increased removal rates is possible. At the same time, the accessibility of the machine should be improved.
  • the rotational speed of the camshaft is adjusted to the cam contour, ie, when grinding the areas between the cam lobe and the base circle contour, the rotational speed is slowed down.
  • An advantageous aspect The invention is to process according to this method camshafts with mirror-image arranged cams with two grinding spindles simultaneously.
  • the method is particularly suitable for machining camshafts for four-cylinder internal combustion engines. These camshafts have four cams or pairs of cams, which are arranged in pairs in mirror image to the longitudinal axis of the camshaft.
  • the first two cams or pairs of cams are first processed in a single clamping, the grinding spindles are moved along the longitudinal axis of the camshaft to the still unprocessed cams, and finally the second cams or pairs of cams are subjected to grinding.
  • loading and unloading can be done from the operator side and the support of the camshaft, for example, with lunettes, from the back. Since, unlike the prior art, only two grinding spindles are used, there is sufficient space for the support and the automatic loading available.
  • two workpiece grippers are provided for loading and unloading. While the first workpiece gripper grips the finished camshaft and deposits it on the transport device, the second workpiece gripper detects an unprocessed camshaft from the transport device and places it in the workpiece holding device.
  • Fig. 1 shows a machine tool 1 for machining camshafts 7, not essential to the invention details of the drive, the controller and the housing are not shown.
  • the camshafts 7 are clamped in the workpiece holding device 6, consisting of the workpiece spindle 8 and the tailstock 9 and set in rotation.
  • the two grinding spindles 10 and 11 are arranged on both sides of the workpiece rotation axis 16. They are guided on the machine frame 2 in two mutually orthogonal directions (X and Z axis) movable.
  • vertical guides 3 are provided for the vertical slide 4 on the machine frame 2 and these in turn carry guides 12 for the Horizontal carriage 5.
  • the intake and removal of the camshaft 7 via transport devices 13, 13 '.
  • Fig. 2 shows that the workpiece rotation axis 16 and the rotation axes 19, 19 'of the grinding spindles 10, 11 are arranged in a plane.
  • the bezel 15 is arranged to support the camshaft 7.
  • the guides 3, the workpiece holding device 6 and the bezel 15 are arranged on a vertical wall 20 of the machine frame 2.
  • the unprocessed camshafts 7 are supplied with the transport device 13 and finished camshafts are discharged from the transport device 13 '.
  • the first workpiece gripper 14 ' grips the finished camshaft and places it on the transport device 13'.
  • the second workpiece gripper 14 detects an unprocessed camshaft from the transporting device 13 and places it in the workpiece holding device 6.
  • the arrangement of the grinding spindles 10, 11 on opposite sides of the workpiece rotation axis 16 and the attachment of the bezel 15 hiss the vertical guides 3 improves accessibility considerably.
  • the camshaft 7 can be inserted by simple circular arc pivotal movements of the operating side in the workpiece holding device 6.
  • the Figures 3 and 4 show snapshots of the loading process.
  • the Fig. 3 shows the workpiece gripping devices 14, 14 'during the pivoting movement.
  • the workpiece grippers 19, 19 ' are designed as a pivot lever.
  • the camshaft 7 for loading and unloading between the transport devices 13, 13 'and the workpiece holding device 6 on circular tracks 21, 21' moves.
  • an unprocessed camshaft is inserted into the workpiece holding device 6 and at the same time the finished camshaft 7 is deposited on the transport device 13 '.
  • the grinding wheels 22, 22 ' shown partially broken.
  • the workpiece gripper 14 For gripping the camshafts 7, the workpiece gripper 14 is provided with a pair of pliers 23. When the pliers are open, the workpiece gripper 14 can pivot into or out of the area of the workpiece rotation axis 16 for gripping or inserting the camshaft 7 along the circular path 21.
  • the Fig. 6 shows details of the camshaft 7 with the workpiece rotation axis 16 in the side view.
  • Each cam has a base circle contour 17, beyond which protrudes the cam lobe 18.
  • the cam lobes 18 are arranged in mirror image with respect to the workpiece rotation axis 16 and enclose angles of 90 ° with each other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

The invention relates to a method and a device for grinding cams of a camshaft (7) in a clamp with two grinding spindles (10, 11), wherein the cams or cam pairs are each arranged in a mirror image relative to the workpiece rotation axis (16), wherein the camshaft (7) is tensioned and rotated about the longitudinal axis thereof. In the device for carrying out the method, the camshaft (7) can be inserted into the workpiece receiver (6) from the side lying opposite the at least one back stay (15) by means of the loading device.

Description

Die Erfindung betrifft ein Verfahren zum Schleifen von Nocken einer Nockenwelle.The invention relates to a method for grinding cams of a camshaft.

Aus der JP 2005052912 A ist eine Maschine zur Finishbearbeitung von Nockenwellen bekannt. Um sämtliche Nocken gleichzeitig bearbeiten zu können, ist eine entsprechende Anzahl von Finishaggregaten rings um die Nockenwelle herum angeordnet. Dadurch ist die Maschine für das Bedienpersonal nur schwer zugänglich. Zudem kann die Nockenwelle nicht mit Lünetten abgestützt werden, weil der dafür benötigte Raum mit Finishaggregaten zugebaut ist. Die Maschine ist daher nicht für das Schleifen mit hohen Abtragsraten geeignet. Außerdem sind zum Be- und Entladen mehrachsige Bewegungsabläufe notwendig, da die Nockenwellen zwangsläufig der Länge nach in den Arbeitsbereich hinein, bzw. aus diesem heraus bewegt werden müssen. Die EP 0 085 225 B1 zeigt ein Verfahren zur Schleifbearbeitung von Nockenwellen, wobei zur Erzielung einer gleichförmigen Vorschubgeschwindigkeit die Rotationsgeschwindigkeit der Nockenwelle an die Nockenkontur angepasst wird. Nach diesem Verfahren werden die Nocken einzeln nacheinander bearbeitet. Aus der DE 10 2004 012 385 ist eine Werkzeugmaschine zur Bearbeitung wellenförmiger Werkstücke bekannt. Auf beiden Seiten der Werkstückspindel sind Revolver mit angetriebenen Werkzeugen, auch zum Schleifen, vorgesehen. Zum Be- und Entladen ist wenigstens ein Revolver mit einer Greifeinrichtung für Werkstücke ausgestattet.From the JP 2005052912 A is a machine known for finishing of camshafts. In order to be able to process all cams simultaneously, a corresponding number of finishing units are arranged around the camshaft. As a result, the machine is difficult for the operator to access. In addition, the camshaft can not be supported with steady rests, because the space required for this is added with finishing units. The machine is therefore not suitable for grinding with high removal rates. In addition, multiaxial motion sequences are necessary for loading and unloading, since the camshafts inevitably have to be moved lengthwise into and out of the working area. The EP 0 085 225 B1 shows a method for grinding of camshafts, wherein to achieve a uniform feed rate, the rotational speed of the camshaft is adapted to the cam contour. After this procedure, the cams are processed one by one. From the DE 10 2004 012 385 is a machine tool for machining undulating workpieces known. Turrets with driven tools, also for grinding, are provided on both sides of the workpiece spindle. For loading and unloading at least one revolver is equipped with a gripping device for workpieces.

Der Erfindung liegt die Aufgabe zu Grunde, ein Verfahren der eingangs beschriebenen Art so zu verbessern, dass eine Schleifbearbeitung mit erhöhten Abtragsraten ermöglicht wird. Gleichzeitig soll die Zugänglichkeit der Maschine verbessert werden.The invention is based on the object to improve a method of the type described above so that a grinding machining with increased removal rates is possible. At the same time, the accessibility of the machine should be improved.

Diese Aufgabe wird gelöst durch ein Verfahren nach Anspruch 1. Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by a method according to claim 1. Advantageous developments of the invention are the subject of the dependent claims.

Beim Nockenschleifen mit hoher Abtragsrate wird zur Erzielung einer gleichförmigen Vorschubgeschwindigkeit die Rotationsgeschwindigkeit der Nockenwelle an die Nockenkontur angepasst, d.h. beim Schleifen der Bereiche zwischen Nockenerhebung und Grundkreiskontur wird die Rotationsgeschwindigkeit verlangsamt. Ein vorteilhafter Aspekt der Erfindung besteht darin, nach diesem Verfahren Nockenwellen mit spiegelbildlich angeordneten Nocken mit zwei Schleifspindeln gleichzeitig zu bearbeiten. Das Verfahren ist besonders gut zur Bearbeitung von Nockenwellen für Vierzylinder- Verbrennungsmotoren geeignet. Diese Nockenwellen weisen vier Nocken oder Nockenpaare auf, die jeweils paarweise spiegelbildlich zur Längsachse der Nockenwelle angeordnet sind. Nach der Erfindung werden in einer Aufspannung zunächst die ersten beiden Nocken oder Nockenpaare bearbeitet, die Schleifspindeln entlang der Längsachse der Nockenwelle zu den noch unbearbeiteten Nocken bewegt und abschließend die zweiten Nocken oder Nockenpaare der Schleifbearbeitung unterzogen. Durch die spiegelbildliche Anordnung der Schleifspindeln kann das Be- und Entladen von der Bedienerseite her erfolgen und die Abstützung der Nockenwelle, beispielsweise mit Lünetten, von der Rückseite her. Da anders als beim Stand der Technik nur zwei Schleifspindeln eingesetzt werden, steht ausreichend Raum für die Abstützung und die selbsttätige Beladung zur Verfügung. Bei einer vorteilhaften Ausführung sind für das Be- und Entladen zwei Werkstückgreifer vorgesehen. Während der erste Werkstückgreifer die fertigbearbeitete Nockenwelle ergreift und auf die Transporteinrichtung ablegt, erfasst der zweite Werkstückgreifer eine unbearbeitete Nockenwelle von der Transporteinrichtung und legt die sie in die Werkstückhaltevorrichtung ein.In high-rate camming, to obtain a uniform feed rate, the rotational speed of the camshaft is adjusted to the cam contour, ie, when grinding the areas between the cam lobe and the base circle contour, the rotational speed is slowed down. An advantageous aspect The invention is to process according to this method camshafts with mirror-image arranged cams with two grinding spindles simultaneously. The method is particularly suitable for machining camshafts for four-cylinder internal combustion engines. These camshafts have four cams or pairs of cams, which are arranged in pairs in mirror image to the longitudinal axis of the camshaft. According to the invention, the first two cams or pairs of cams are first processed in a single clamping, the grinding spindles are moved along the longitudinal axis of the camshaft to the still unprocessed cams, and finally the second cams or pairs of cams are subjected to grinding. Due to the mirror-image arrangement of the grinding spindles loading and unloading can be done from the operator side and the support of the camshaft, for example, with lunettes, from the back. Since, unlike the prior art, only two grinding spindles are used, there is sufficient space for the support and the automatic loading available. In an advantageous embodiment, two workpiece grippers are provided for loading and unloading. While the first workpiece gripper grips the finished camshaft and deposits it on the transport device, the second workpiece gripper detects an unprocessed camshaft from the transport device and places it in the workpiece holding device.

Im Folgenden wird die Erfindung an Hand von Ausführungsbeispielen näher erläutert.

Fig. 1
zeigt die Vorderansicht einer Werkzeugmaschine
Fig. 2
zeigt die Werkzeugmaschine in der Ansicht von oben teilweise in geschnittener Darstellung
Fig. 3
und 4 zeigen zusammen mit Fig. 2 die Beladung in drei Schritten
Fig. 5
zeigt eine Einzelheit aus Fig. 4 in vergrößerter Darstellung
Fig. 6
zeigt die Nockenwelle in der Seitenansicht
In the following the invention will be explained in more detail with reference to exemplary embodiments.
Fig. 1
shows the front view of a machine tool
Fig. 2
shows the machine tool in the top view partially in a sectional view
Fig. 3
and 4 show together with Fig. 2 the loading in three steps
Fig. 5
shows a detail Fig. 4 in an enlarged view
Fig. 6
shows the camshaft in the side view

Fig. 1 zeigt eine Werkzeugmaschine 1 zur Bearbeitung von Nockenwellen 7, wobei nicht erfindungswesentliche Details des Antriebs, der Steuerung und des Gehäuses nicht dargestellt sind. Die Nockenwellen 7 werden in der Werkstückhaltevorrichtung 6, bestehend aus der Werkstückspindel 8 und dem Reitstock 9 eingespannt und in Rotation versetzt. Die beiden Schleifspindeln 10 und 11 sind auf beiden Seiten der Werkstückrotationsachse 16 angeordnet. Sie sind am Maschinengestell 2 in zwei zueinander orthogonalen Richtungen (X- und Z-Achse) beweglich geführt. Dazu sind am Maschinengestell 2 vertikale Führungen 3 für die Vertikalschlitten 4 vorgesehen und diese tragen ihrerseits Führungen 12 für die Horizontalschlitten 5. Die Zu- bzw. Abführung der Nockenwellen 7 erfolgt über Transportvorrichtungen 13, 13'. Das Be- und Entladen erfolgt mit zwei Werkstückgreifem 14, 14'.
Aus Fig. 2 geht hervor, dass die Werkstückrotationsachse 16 und die Rotationsachsen 19, 19' der Schleifspindeln 10, 11 in einer Ebene angeordnet sind. Zwischen den vertikalen Führungen 3 ist die Lünette 15 zur Abstützung der Nockenwelle 7 angeordnet. Bei einer vorteilhaften Ausführung sind die Führungen 3, die Werkstückhaltevorrichtung 6 und die Lünette 15 an einer vertikalen Wand 20 des Maschinengestells 2 angeordnet. Die unbearbeiteten Nockenwellen 7 werden mit der Transportvorrichtung 13 zugeführt und fertig bearbeitete Nockenwellen werden von der Transportvorrichtung 13' abgeführt. Während des Werkstückwechsels ergreift der erste Werkstückgreifer 14' die fertigbearbeitete Nockenwelle und legt sie auf die Transporteinrichtung 13' ab. Gleichzeitig erfasst der zweite Werkstückgreifer 14 eine unbearbeitete Nockenwelle von der Transporteinrichtung 13 und legt sie in die Werkstückhaltevorrichtung 6 ein. Die Anordnung der Schleifspindeln 10, 11 auf gegenüberliegenden Seiten der Werkstückrotationsachse 16 und die Anbringung der Lünette 15 zischen den vertikalen Führungen 3 verbessert die Zugänglichkeit erheblich. Außerdem können die Nockenwellen 7 durch einfache kreisbogenförmige Schwenkbewegungen von der Bedienseite her in die Werkstückhaltevorrichtung 6 eingelegt werden. Fig. 1 shows a machine tool 1 for machining camshafts 7, not essential to the invention details of the drive, the controller and the housing are not shown. The camshafts 7 are clamped in the workpiece holding device 6, consisting of the workpiece spindle 8 and the tailstock 9 and set in rotation. The two grinding spindles 10 and 11 are arranged on both sides of the workpiece rotation axis 16. They are guided on the machine frame 2 in two mutually orthogonal directions (X and Z axis) movable. For this purpose vertical guides 3 are provided for the vertical slide 4 on the machine frame 2 and these in turn carry guides 12 for the Horizontal carriage 5. The intake and removal of the camshaft 7 via transport devices 13, 13 '. The loading and unloading takes place with two workpiece grippers 14, 14 '.
Out Fig. 2 shows that the workpiece rotation axis 16 and the rotation axes 19, 19 'of the grinding spindles 10, 11 are arranged in a plane. Between the vertical guides 3, the bezel 15 is arranged to support the camshaft 7. In an advantageous embodiment, the guides 3, the workpiece holding device 6 and the bezel 15 are arranged on a vertical wall 20 of the machine frame 2. The unprocessed camshafts 7 are supplied with the transport device 13 and finished camshafts are discharged from the transport device 13 '. During the workpiece change, the first workpiece gripper 14 'grips the finished camshaft and places it on the transport device 13'. At the same time, the second workpiece gripper 14 detects an unprocessed camshaft from the transporting device 13 and places it in the workpiece holding device 6. The arrangement of the grinding spindles 10, 11 on opposite sides of the workpiece rotation axis 16 and the attachment of the bezel 15 hiss the vertical guides 3 improves accessibility considerably. In addition, the camshaft 7 can be inserted by simple circular arc pivotal movements of the operating side in the workpiece holding device 6.

Die Figuren 3 und 4 zeigen Momentaufnahmen des Beladevorgangs. Die Fig. 3 zeigt die Werkstückgreifvorrichtungen 14, 14' während der Schwenkbewegung. Die Werkstückgreifer 19, 19' sind als Schwenkhebel ausgeführt. Damit werden die Nockenwellen 7 zum Be- und Entladen zwischen den Transporteinrichtungen 13, 13' und der Werkstückhaltevorrichtung 6 auf kreisförmigen Bahnen 21, 21' bewegt. Nach Fig. 4 wird eine unbearbeitete Nockenwelle in die Werkstückhaltevorrichtung 6 eingelegt und gleichzeitig die fertigbearbeitete Nockenwelle 7 auf die Transporteinrichtung 13' abgelegt. Um die Einzelheiten im Bereich der Werkstückrotationsachse 16 zu zeigen sind in Fig. 5 die Schleifscheiben 22, 22' teilweise gebrochen dargestellt. Zum Greifen der Nockenwellen 7 ist der Werkstückgreifer 14 mit einer Zange 23 versehen. Bei geöffneter Zange kann der Werkstückgreifer 14 zum Greifen oder Einlegen der Nockenwelle 7 entlang der kreisförmigen Bahn 21 in den Bereich der Werkstückrotationsachse 16 hinein- bzw. aus diesem herausschwenken.
Die Fig. 6 zeigt Details der Nockenwelle 7 mit der Werkstückrotationsachse 16 in der Seitenansicht. Jeder Nocken weist eine Grundkreiskontur 17 auf, über welche die Nockenerhebung 18 hinausragt. Bei den Nockenwellen für Vierzylinder-Verbrennungsmotoren sind die Nockenerhebungen 18 in Bezug auf die Werkstückrotationsachse 16 spiegelbildlich angeordnet und schließen untereinander Winkel von 90° ein.The Figures 3 and 4 show snapshots of the loading process. The Fig. 3 shows the workpiece gripping devices 14, 14 'during the pivoting movement. The workpiece grippers 19, 19 'are designed as a pivot lever. Thus, the camshaft 7 for loading and unloading between the transport devices 13, 13 'and the workpiece holding device 6 on circular tracks 21, 21' moves. To Fig. 4 an unprocessed camshaft is inserted into the workpiece holding device 6 and at the same time the finished camshaft 7 is deposited on the transport device 13 '. In order to show the details in the area of the workpiece rotation axis 16 are in Fig. 5 the grinding wheels 22, 22 'shown partially broken. For gripping the camshafts 7, the workpiece gripper 14 is provided with a pair of pliers 23. When the pliers are open, the workpiece gripper 14 can pivot into or out of the area of the workpiece rotation axis 16 for gripping or inserting the camshaft 7 along the circular path 21.
The Fig. 6 shows details of the camshaft 7 with the workpiece rotation axis 16 in the side view. Each cam has a base circle contour 17, beyond which protrudes the cam lobe 18. In the camshafts for four-cylinder internal combustion engines, the cam lobes 18 are arranged in mirror image with respect to the workpiece rotation axis 16 and enclose angles of 90 ° with each other.

Bezugszeichenreference numeral

11
Werkzeugmaschinemachine tool
22
Maschinengestellmachine frame
33
Führungguide
44
Vertikalschlittenvertical slide
55
Horizontalschlittenhorizontal slide
66
WerkstückhaltevorrichtungWorkpiece holding device
77
Nockenwellecamshaft
88th
WerkstückspindelWorkpiece spindle
99
Reitstocktailstock
1010
Schleifspindelgrinding spindle
1111
Schleifspindelgrinding spindle
1212
Führungguide
13 13'13 13 '
Transportvorrichtungtransport device
14 14'14 14 '
WerkstückgreiferWorkpiece gripper
1515
Lünettebezel
1616
WerkstückrotationsachseWorkpiece rotation axis
1717
GrundkreiskonturBase circle contour
1818
Nockenerhebungcam lobe
19 19'19 19 '
Rotationsachseaxis of rotation
2020
Wandwall
21 21'21 21 '
Bahntrain
22 22'22 22 '
Schleifscheibegrinding wheel
2323
Zangetongs

Claims (4)

  1. Method for grinding cams of a camshaft (7) in a clamp with two grinding spindles (10, 11), wherein the camshaft (7) has at least four cams or cam pairs, wherein the cams or cam pairs each have a base circle contour (17) and a cam elevation (18), wherein the cams or cam pairs are arranged in each case in a mirror image relative to the workpiece axis of rotation (16), wherein the camshaft (7) is clamped into the workpiece holding device (6) and rotated about its longitudinal axis,
    with the following method steps:
    a) automatic clamping of the camshaft (7) into the workpiece holding device (6)
    b) simultaneous machining of two cams or cam pairs arranged in a mirror image by the grinding spindles (10, 11)
    c) grinding spindles (10, 11) moving relative to the camshaft (7) in the direction of the workpiece axis of rotation (16) to unmachined cams or cam pairs
    d) repeat step b)
    e) where required, repeat steps b) and c) until all cams or cam pairs have been machined
    f) automatic depositing of the camshaft (7).
  2. Method according to Claim 1, characterized in that to achieve a desired rate of feed, a rate profile associated with the base circle contour (17) and the cam elevations (18) is provided for the rotation of the camshaft (7), and in that for grinding the cams arranged in mirror image, the camshaft (7) is set in rotation corresponding to the rate profile.
  3. Method according to Claim 1 or 2, characterized in that during loading and unloading, the camshaft (7) is moved in a direction transversely to the workpiece axis of rotation (16).
  4. Method according to one of Claims 1 to 3, characterized in that the finish-machined camshaft (7) is removed from the workpiece accommodating means (6) by a first workpiece gripper (14') and at the same time an unmachined camshaft (7) is inserted into the workpiece accommodating means (6) by a second workpiece gripper (14).
EP08757924A 2007-06-13 2008-04-12 Method for grinding cams of a camshaft Active EP2162260B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007027832 2007-06-13
PCT/DE2008/000542 WO2008151586A1 (en) 2007-06-13 2008-04-12 Method and device for grinding cams of a camshaft

Publications (2)

Publication Number Publication Date
EP2162260A1 EP2162260A1 (en) 2010-03-17
EP2162260B1 true EP2162260B1 (en) 2010-10-13

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Country Status (7)

Country Link
US (1) US8398455B2 (en)
EP (1) EP2162260B1 (en)
CN (1) CN101687303B (en)
AT (1) ATE484358T1 (en)
DE (2) DE502008001547D1 (en)
ES (1) ES2354592T3 (en)
WO (1) WO2008151586A1 (en)

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DE102007051904B3 (en) * 2007-10-29 2009-02-12 Emag Holding Gmbh Machine tool for processing rotationally symmetrical workpieces transports workpieces from a workpiece feeding position to a workpiece spindle by moving carriages and pivoting revolving disks about horizontal pivoting axes
DE102009024209B4 (en) * 2009-06-08 2012-12-06 Erwin Junker Maschinenfabrik Gmbh METHOD AND DEVICE FOR MULTILAYER GRINDING OF WORKPIECES
DE102010026663A1 (en) * 2010-07-09 2012-01-12 Emag Holding Gmbh Grinding machine for grinding cams
DE102012012331B4 (en) * 2011-07-28 2016-03-03 Emag Holding Gmbh machine tool
DE102011110118B4 (en) * 2011-08-15 2015-07-09 Emag Holding Gmbh simultaneous grinding machine
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DE102008026655A1 (en) 2008-12-18
CN101687303B (en) 2013-05-29
EP2162260A1 (en) 2010-03-17
US20100233939A1 (en) 2010-09-16
DE102008026655B4 (en) 2016-06-02
CN101687303A (en) 2010-03-31
US8398455B2 (en) 2013-03-19
WO2008151586A1 (en) 2008-12-18
ES2354592T3 (en) 2011-03-16
ATE484358T1 (en) 2010-10-15
DE502008001547D1 (en) 2010-11-25

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