EP1481761B1 - Finishing machine for crankshafts and camshafts - Google Patents

Finishing machine for crankshafts and camshafts Download PDF

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Publication number
EP1481761B1
EP1481761B1 EP20030011786 EP03011786A EP1481761B1 EP 1481761 B1 EP1481761 B1 EP 1481761B1 EP 20030011786 EP20030011786 EP 20030011786 EP 03011786 A EP03011786 A EP 03011786A EP 1481761 B1 EP1481761 B1 EP 1481761B1
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EP
European Patent Office
Prior art keywords
work piece
tool carrier
head section
tool
workpiece
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.)
Expired - Lifetime
Application number
EP20030011786
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German (de)
French (fr)
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EP1481761A1 (en
Inventor
Horst Steinwender
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.)
Thielenhaus Technologies GmbH
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Thielenhaus Technologies 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 Thielenhaus Technologies GmbH filed Critical Thielenhaus Technologies GmbH
Priority to DE50303194T priority Critical patent/DE50303194D1/en
Priority to EP20030011786 priority patent/EP1481761B1/en
Publication of EP1481761A1 publication Critical patent/EP1481761A1/en
Application granted granted Critical
Publication of EP1481761B1 publication Critical patent/EP1481761B1/en
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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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
    • 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
    • B24B35/00—Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high frequency
    • 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

Definitions

  • the invention relates to a device for finish machining of shafts, in particular of crankshafts and camshafts, with at least one tool carrier following the orbital movement of a workpiece rotating about its axis of rotation, and at least one arranged on a head piece of the tool carrier tool for finishing the workpiece.
  • a device with the features described is known from the document DE 100 09 980 C1.
  • the tool carrier on a cross guide system, which follows the workpiece movements by linear movements in two axes.
  • the tool carrier has a hydraulically, electromechanically or pneumatically operated pressure shoe, which firmly encloses the workpiece surface to be machined.
  • a so-called "teaching" is initially required in order to adapt the position of the individual tool carriers to the shape of the workpiece.
  • the invention has for its object to provide a device that processes a precise, simple and fast finish of waves, in particular of crankshafts and camshafts, allows.
  • the bearing shafts may be copies of the workpiece or even consist of already machined workpieces.
  • the rotary drive can take place via the workpiece and / or one or both bearing shafts.
  • a plurality of tool carriers for the simultaneous machining of workpiece surfaces of the workpiece are arranged along the bearing shafts. This allows complete workpiece machining in a single machining operation. Since the position of the tool carriers is determined by the bearing shafts, teaching is no longer required to match the positions of the tool carriers to the shape of the workpiece.
  • the ends of the head surround the machining surface of the workpiece.
  • the head piece may in this case consist of at least two Andschreibimin, which are radially deliverable or pivotally connected to each other to the processing surface.
  • the Headpiece also be forked. In this case, it is possible to manufacture the tool carrier in one piece.
  • a grinding belt is used as a tool, which is partially clamped around the workpiece between the two head ends.
  • rotatable rollers for low-friction guidance of the sanding belt can be arranged.
  • at least one pressure roller is arranged on the tool carrier within the clasping of the head piece, which additionally presses the grinding belt against the processing surface.
  • the abrasive belt can pass continuously or in cycles on the workpiece.
  • the abrasive belt is preferably tensioned as an endless belt around a deflection roller arranged on the tool carrier.
  • the pulley is equipped with a drive that allows the running movement of the belt.
  • a rotatable donor roll which is connected to the one end of the grinding belt and is wrapped by the grinding belt, and a take-up roller connected to the other end of the grinding belt can also be arranged on the tool carrier.
  • Fresh abrasive tape is unwound from the donor roll while coiling used abrasive tape on the take-up roll equipped with a drive.
  • a tool which forms a linear contact surface with the workpiece, for. B. a honing stone.
  • the invention teaches that at the opposite end of the head of the tool carrier another head piece with tool for simultaneous Finish machining of a second synchronous and in phase with the bearing shafts rotating about its axis workpiece is arranged, whose shape corresponds to the first workpiece. This allows the simultaneous machining of two identical workpieces.
  • the figures each show a device for finish machining of shafts, in particular crankshafts and camshafts.
  • the device has a tool carrier 1 which follows the circulating movement of a workpiece 2 rotating about its axis of rotation A, in the present case a crankshaft.
  • a tool 4 for finishing the crankshaft 2 is arranged on a head piece 3 of the tool carrier 1, a tool 4 for finishing the crankshaft 2 is arranged.
  • a grinding belt is used as the tool 4.
  • parallel to the workpiece 2 two bearing shafts 5,5 'are arranged, whose shape corresponds to the workpiece 2.
  • the bearing shafts 5,5 ' may be copies of the workpiece 2, or else consist of already machined workpieces.
  • the bearing shafts 5,5 ' rotate synchronously and in phase with Workpiece 2 about their axes B, B ', wherein the rotational drive via one or both bearing shafts 5,5' takes place.
  • the workpiece carrier 1 is mounted on circumferential surfaces 6,6 'of the bearing shafts 5,5', which correspond to the surface 7 to be machined of the workpiece 2.
  • the position of the tool carrier 1 is determined by the two bearing shafts 5, 5 ', so that no additional devices for adjusting the tool carrier 1 are required before clamping the crankshaft 2 to be machined are. After unclamping the machined crankshaft 2, the tool carrier 1 maintains its position, whereby a quick and easy workpiece change is made possible.
  • the head piece 3 is fork-shaped, so that the ends 10, 10 'of the head piece surround the machining surface 7 of the workpiece 2.
  • the fork-shaped tool carrier 1 is in one piece and therefore inexpensive to produce. Due to the looping of the workpiece 2, the abrasive belt 4 ensures a large pressure surface.
  • the grinding belt 4 runs continuously or clocked past the workpiece 2.
  • the grinding belt 4 is formed as an endless belt, which is stretched around a arranged on the tool carrier 1 guide roller 12.
  • the guide roller 12 has a drive, not shown, which allows the running movement of the grinding belt 4.
  • the workpiece 2 or the bearing shafts 5,5 'with the tool carriers 1,1', 1 "fastened thereto are arranged on a displaceable carriage (not shown).
  • the head piece 3 consists of two Andschreib 1969 ', which are pivotally connected to each other.
  • the pressure shoes 13,13 ' can be operated for example hydraulically, electromechanically or pneumatically.
  • an additional pressure roller 14 is arranged on the tool carrier 1.
  • the take-up reel 16 which is equipped with a drive (not shown), fresh abrasive belt can be unwound from the dispenser roll 15 while at the same time already used areas of the sanding belt 4 are rolled up on the take-up reel 16.
  • Fig. 3 shows an embodiment of the invention, in which at the opposite end of the head piece 3 17 of the tool holder 1 another of the sanding belt 4 spanned head piece 3 'for simultaneous finish machining a second synchronous and in phase with the bearing shafts 5,5' to their Axis A 'rotating crankshaft 2' is arranged, whose shape corresponds to the first crankshaft 2.
  • the two crankshafts 2, 2 ' are expediently arranged on two separate displaceable feed carriages (not shown).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Finishbearbeitung von Wellen, insbesondere von Kurbel- und Nockenwellen, mit
mindestens einem Werkzeugträger, der der Umlaufbewegung eines um seine Rotationsachse rotierenden Werkstückes folgt, und
mindestens einem an einem Kopfstück des Werkzeugträgers angeordneten Werkzeug zur Finishbearbeitung des Werkstückes.The invention relates to a device for finish machining of shafts, in particular of crankshafts and camshafts, with
at least one tool carrier following the orbital movement of a workpiece rotating about its axis of rotation, and
at least one arranged on a head piece of the tool carrier tool for finishing the workpiece.

Eine Vorrichtung mit den beschriebenen Merkmalen ist aus der Druckschrift DE 100 09 980 C1 bekannt. Bei der bekannten Vorrichtung weist der Werkzeugträger ein Kreuzführungssystem auf, welches durch Linearbewegungen in zwei Achsen den Werkstückbewegungen folgt. Der Werkzeugträger weist einen hydraulisch, elektromechanisch oder pneumatisch betriebenen Andrückschuh auf, der die zu bearbeitende Werkstückoberfläche fest umschließt. Bei einer Anordnung mehrerer Werkzeugträger zur gleichzeitigen Bearbeitung mehrerer Oberflächen des Werkstückes ist zunächst ein sogenanntes "Teaching" erforderlich, um die Position der einzelnen Werkzeugträger an die Gestalt des Werkstückes anzupassen.A device with the features described is known from the document DE 100 09 980 C1. In the known device, the tool carrier on a cross guide system, which follows the workpiece movements by linear movements in two axes. The tool carrier has a hydraulically, electromechanically or pneumatically operated pressure shoe, which firmly encloses the workpiece surface to be machined. In the case of an arrangement of a plurality of tool carriers for the simultaneous machining of a plurality of surfaces of the workpiece, a so-called "teaching" is initially required in order to adapt the position of the individual tool carriers to the shape of the workpiece.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung anzugeben, die ein exaktes, einfaches und schnelles Finishbearbeiten von Wellen, insbesondere von Kurbel- und Nockenwellen, ermöglicht.The invention has for its object to provide a device that processes a precise, simple and fast finish of waves, in particular of crankshafts and camshafts, allows.

Die Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.The object is solved by the features of claim 1.

Die Lagerwellen können Kopien des Werkstückes sein oder aber auch aus bereits bearbeiteten Werkstücken bestehen. Der Rotationsantrieb kann über das Werkstück und/oder eine oder beide Lagerwellen erfolgen.The bearing shafts may be copies of the workpiece or even consist of already machined workpieces. The rotary drive can take place via the workpiece and / or one or both bearing shafts.

Vorzugsweise sind entlang der Lagerwellen mehrere Werkzeugträger zur gleichzeitigen Bearbeitung von Werkstückflächen des Werkstückes angeordnet. Dies ermöglicht eine komplette Werkstückbearbeitung in einem einzigen Bearbeitungsvorgang. Da die Position der Werkzeugträger durch die Lagerwellen festgelegt ist, ist kein "Teaching" mehr erforderlich, um die Positionen der Werkzeugträger an die Gestalt des Werkstückes anzupassen.Preferably, a plurality of tool carriers for the simultaneous machining of workpiece surfaces of the workpiece are arranged along the bearing shafts. This allows complete workpiece machining in a single machining operation. Since the position of the tool carriers is determined by the bearing shafts, teaching is no longer required to match the positions of the tool carriers to the shape of the workpiece.

Vorzugsweise umgreifen die Enden des Kopfstückes die Bearbeitungsoberfläche des Werkstückes. Das Kopfstück kann hierbei aus mindestens zwei Andrückschuhen bestehen, die radial zur Bearbeitungsoberfläche zustellbar oder schwenkbeweglich miteinander verbunden sind. Alternativ kann das Kopfstück auch gabelförmig ausgebildet sein. In diesem Fall ist es möglich, den Werkzeugträger einstückig herzustellen.Preferably, the ends of the head surround the machining surface of the workpiece. The head piece may in this case consist of at least two Andrückschuhen, which are radially deliverable or pivotally connected to each other to the processing surface. Alternatively, the Headpiece also be forked. In this case, it is possible to manufacture the tool carrier in one piece.

Vorzugsweise wird als Werkzeug ein Schleifband verwendet, welches das Werkstück teilweise umschlingend zwischen den beiden Kopfstückenden gespannt ist. An den Kopfstückenden können drehbewegliche Rollen zur reibungsarmen Führung des Schleifbandes angeordnet sein. Ferner kann es zweckmäßig sein, dass innerhalb der Umgreifung des Kopfstückes mindestens eine Andrückrolle am Werkzeugträger angeordnet ist, die das Schleifband zusätzlich an die Bearbeitungsoberfläche andrückt. Das Schleifband kann kontinuierlich oder getaktet an dem Werkstück vorbeilaufen. Vorzugsweise ist das Schleifband als Endlosband um eine an dem Werkzeugträger angeordnete Umlenkrolle gespannt. Die Umlenkrolle ist mit einem Antrieb ausgerüstet, der die Laufbewegung des Bandes ermöglicht. Alternativ kann an dem Werkzeugträger auch eine mit dem einen Ende des Schleifbandes verbundene, von dem Schleifband umwickelte drehbewegliche Spenderrolle und eine mit dem anderen Ende des Schleifbandes verbundene Aufwickelrolle angeordnet sein. Von der Spenderrolle wird frisches Schleifband abgewickelt, während gleichzeitig benutztes Schleifband auf der mit einem Antrieb ausgerüsteten Aufwickelrolle aufgewickelt wird. Im Rahmen der Erfindung liegt auch die Verwendung eines Werkzeuges, welches mit dem Werkstück eine linienförmige Berührungsfläche bildet, z. B. eines Honsteines.Preferably, a grinding belt is used as a tool, which is partially clamped around the workpiece between the two head ends. At the head end rotatable rollers for low-friction guidance of the sanding belt can be arranged. Furthermore, it may be expedient that at least one pressure roller is arranged on the tool carrier within the clasping of the head piece, which additionally presses the grinding belt against the processing surface. The abrasive belt can pass continuously or in cycles on the workpiece. The abrasive belt is preferably tensioned as an endless belt around a deflection roller arranged on the tool carrier. The pulley is equipped with a drive that allows the running movement of the belt. Alternatively, a rotatable donor roll, which is connected to the one end of the grinding belt and is wrapped by the grinding belt, and a take-up roller connected to the other end of the grinding belt can also be arranged on the tool carrier. Fresh abrasive tape is unwound from the donor roll while coiling used abrasive tape on the take-up roll equipped with a drive. In the context of the invention is also the use of a tool which forms a linear contact surface with the workpiece, for. B. a honing stone.

In weiterer Ausgestaltung lehrt die Erfindung, dass an dem dem Kopfstück gegenüberliegenden Ende des Werkzeugträgers ein weiteres Kopfstück mit Werkzeug zur gleichzeitigen Finishbearbeitung eines zweiten synchron und phasengleich zu den Lagerwellen um seine Achse rotierenden Werkstückes angeordnet ist, dessen Gestalt dem ersten Werkstück entspricht. Dies erlaubt die gleichzeitige Bearbeitung von zwei gleichen Werkstücken.In a further embodiment, the invention teaches that at the opposite end of the head of the tool carrier another head piece with tool for simultaneous Finish machining of a second synchronous and in phase with the bearing shafts rotating about its axis workpiece is arranged, whose shape corresponds to the first workpiece. This allows the simultaneous machining of two identical workpieces.

Im Folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung ausführlich erläutert. Es zeigen schematisch:

Fig. 1
eine Seitenansicht einer erfindungsgemäßen Vorrichtung zur Finishbearbeitung von Wellen,
Fig. 2 und 3
weitere Ausgestaltungen der erfindungsgemäßen Vorrichtung ebenfalls in einer Seitenansicht.
In the following the invention will be explained in detail with reference to a drawing showing only one embodiment. They show schematically:
Fig. 1
a side view of a device according to the invention for finish machining of waves,
FIGS. 2 and 3
Further embodiments of the device according to the invention also in a side view.

Die Figuren zeigen jeweils eine Vorrichtung zur Finishbearbeitung von Wellen, insbesondere von Kurbel- und Nockenwellen. Die Vorrichtung weist einen Werkzeugträger 1 auf, der der Umlaufbewegung eines um seine Rotationsachse A rotierenden Werkstückes 2, im vorliegenden Fall einer Kurbelwelle, folgt. An einem Kopfstück 3 des Werkzeugträgers 1 ist ein Werkzeug 4 zur Finishbearbeitung der Kurbelwelle 2 angeordnet. Im Ausführungsbeispiel wird als Werkzeug 4 ein Schleifband verwendet. Parallel zum Werkstück 2 sind zwei Lagerwellen 5,5' angeordnet, deren Gestalt dem Werkstück 2 entspricht. Die Lagerwellen 5,5' können hierbei Kopien des Werkstückes 2 sein, oder aber auch aus bereits bearbeiteten Werkstücken bestehen. Die Lagerwellen 5,5' rotieren synchron und phasengleich zum Werkstück 2 um ihre Achsen B,B', wobei der Rotationsantrieb über eine oder beide Lagerwellen 5,5' erfolgt. Der Werkstückträger 1 ist an Umfangsflächen 6,6' der Lagerwellen 5,5' gelagert, die der zu bearbeitenden Fläche 7 des Werkstückes 2 entsprechen. Die Vorrichtung erlaubt eine einfache konstruktive Gestaltung sowie eine präzise Lagerung des Werkzeugträgers 1. Die Position des Werkzeugträgers 1 ist durch die beiden Lagerwellen 5,5' festgelegt, so dass vor dem Einspannen der zu bearbeitenden Kurbelwelle 2 keine zusätzlichen Vorrichtungen zur Justierung des Werkzeugträgers 1 erforderlich sind. Nach dem Ausspannen der bearbeiteten Kurbelwelle 2 behält der Werkzeugträger 1 seine Position bei, wodurch ein schneller und einfacher Werkstückwechsel ermöglicht wird. Zur gleichzeitigen Bearbeitung mehrerer Werkstückflächen 7,8,9 des Werkstückes sind entlang der Lagerwellen 5,5' mehrere Werkzeugträger 1,1',1 " angeordnet, die aus Gründen der Übersichtlichkeit lediglich mit gestrichelten Linien angedeutet sind. Hierdurch ist ein vollständiges, präzises und schnelles Finishen aller zu bearbeitenden Flächen des Werkstückes in einem einzigen Bearbeitungsvorgang möglich. Bei der erfindungsgemäßen Vorrichtung ist kein "Teaching" mehr erforderlich, da die Positionen der einzelnen Werkzeugträger 1,1',1' ' durch die Lagerwellen 5,5' vorgegeben ist.The figures each show a device for finish machining of shafts, in particular crankshafts and camshafts. The device has a tool carrier 1 which follows the circulating movement of a workpiece 2 rotating about its axis of rotation A, in the present case a crankshaft. On a head piece 3 of the tool carrier 1, a tool 4 for finishing the crankshaft 2 is arranged. In the exemplary embodiment, a grinding belt is used as the tool 4. Parallel to the workpiece 2, two bearing shafts 5,5 'are arranged, whose shape corresponds to the workpiece 2. The bearing shafts 5,5 'may be copies of the workpiece 2, or else consist of already machined workpieces. The bearing shafts 5,5 'rotate synchronously and in phase with Workpiece 2 about their axes B, B ', wherein the rotational drive via one or both bearing shafts 5,5' takes place. The workpiece carrier 1 is mounted on circumferential surfaces 6,6 'of the bearing shafts 5,5', which correspond to the surface 7 to be machined of the workpiece 2. The position of the tool carrier 1 is determined by the two bearing shafts 5, 5 ', so that no additional devices for adjusting the tool carrier 1 are required before clamping the crankshaft 2 to be machined are. After unclamping the machined crankshaft 2, the tool carrier 1 maintains its position, whereby a quick and easy workpiece change is made possible. For the simultaneous machining of a plurality of workpiece surfaces 7, 8, 9 of the workpiece, a plurality of tool carriers 1, 1, 1 "are arranged along the bearing shafts 5, 5 ', which are only indicated by dashed lines for reasons of clarity In the device according to the invention, teaching is no longer necessary since the positions of the individual tool carriers 1, 1, 1 '' are predetermined by the bearing shafts 5, 5 '.

Das Kopfstück 3 ist gabelförmig ausgebildet, so dass die Enden 10,10' des Kopfstückes die Bearbeitungsoberfläche 7 des Werkstückes 2 umgreifen. An den Kopfstückenden 10,10' sind drehbewegliche Rollen 11,11' zur Führung des Schleifbandes 4 angeordnet, welches zwischen den beiden Kopfstückenden 10,10' gespannt ist und dabei die Kurbelwelle 2 teilweise umschlingt. Der gabelförmige Werkzeugträger 1 ist einstückig und daher kostengünstig herstellbar. Durch die Umschlingung des Werkstückes 2 gewährleistet das Schleifband 4 eine große Andrückoberfläche. Das Schleifband 4 läuft kontinuierlich oder getaktet an dem Werkstück 2 vorbei. In Fig. 1 ist das Schleifband 4 als Endlosband ausgebildet, welches um eine an dem Werkzeugträger 1 angeordnete Umlenkrolle 12 gespannt ist. Die Umlenkrolle 12 besitzt einen nicht dargestellten Antrieb, der die Laufbewegung des Schleifbandes 4 ermöglicht. Das Werkstück 2 oder die Lagerwellen 5,5' mit den daran befestigten Werkzeugträgern 1,1',1" sind auf einem verschiebbaren (nicht dargestellten) Zustellschlitten angeordnet.The head piece 3 is fork-shaped, so that the ends 10, 10 'of the head piece surround the machining surface 7 of the workpiece 2. At the head end 10,10 'are rotatable rollers 11,11' arranged to guide the sanding belt 4, which is stretched between the two head ends 10,10 ', while the crankshaft. 2 partially wraps around. The fork-shaped tool carrier 1 is in one piece and therefore inexpensive to produce. Due to the looping of the workpiece 2, the abrasive belt 4 ensures a large pressure surface. The grinding belt 4 runs continuously or clocked past the workpiece 2. In Fig. 1, the grinding belt 4 is formed as an endless belt, which is stretched around a arranged on the tool carrier 1 guide roller 12. The guide roller 12 has a drive, not shown, which allows the running movement of the grinding belt 4. The workpiece 2 or the bearing shafts 5,5 'with the tool carriers 1,1', 1 "fastened thereto are arranged on a displaceable carriage (not shown).

In Fig. 2 besteht das Kopfstück 3 aus zwei Andrückschuhen 13,13', die schwenkbeweglich miteinander verbunden sind. Die Andrückschuhe 13,13' können beispielsweise hydraulisch, elektromechanisch oder auch pneumatisch betrieben werden. Innerhalb der Umgreifung ist eine zusätzliche Andrückrolle 14 am Werkzeugträger 1 angeordnet. An dem Werkzeugträger 1 ist eine mit dem einen Ende des Schleifbandes 4 verbundene, von dem Schleifband 4 umwickelte drehbewegliche Spenderrolle 15 und eine mit dem anderen Ende des Schleifbandes 4 verbundene Aufwickelrolle 16 angeordnet. Durch die mit einem (nicht dargestellten) Antrieb ausgerüstete Aufwickelrolle 16 kann von der Spenderrolle 15 gezielt frisches Schleifband abgewickelt werden, während gleichzeitig bereits benutzte Bereiche des Schleifbandes 4 auf der Aufwickelrolle 16 aufgerollt werden.In Fig. 2, the head piece 3 consists of two Andrückschuhen 13,13 ', which are pivotally connected to each other. The pressure shoes 13,13 'can be operated for example hydraulically, electromechanically or pneumatically. Within the clasping an additional pressure roller 14 is arranged on the tool carrier 1. On the tool carrier 1 connected to the one end of the sanding belt 4, wrapped by the sanding belt 4 rotatable dispenser roll 15 and connected to the other end of the sanding belt 4 take-up roll 16 is arranged. By means of the take-up reel 16, which is equipped with a drive (not shown), fresh abrasive belt can be unwound from the dispenser roll 15 while at the same time already used areas of the sanding belt 4 are rolled up on the take-up reel 16.

Die Fig. 3 zeigt eine Ausführungsform der Erfindung, bei der an dem dem Kopfstück 3 gegenüberliegenden Ende 17 des Werkzeugträgers 1 ein weiteres von dem Schleifband 4 umspanntes Kopfstück 3' zur gleichzeitigen Finishbearbeitung einer zweiten synchron und phasengleich zu den Lagerwellen 5,5' um ihre Achse A' rotierenden Kurbelwelle 2' angeordnet ist, deren Gestalt der ersten Kurbelwelle 2 entspricht. Auf diese Weise ist es möglich, mit der Vorrichtung zwei Kurbelwellen 2,2' gleichzeitig vollständig zu bearbeiten. In diesem Fall sind zweckmäßigerweise die beiden Kurbelwellen 2,2' auf zwei separaten verschiebbaren (nicht dargestellten) Zustellschlitten angeordnet.Fig. 3 shows an embodiment of the invention, in which at the opposite end of the head piece 3 17 of the tool holder 1 another of the sanding belt 4 spanned head piece 3 'for simultaneous finish machining a second synchronous and in phase with the bearing shafts 5,5' to their Axis A 'rotating crankshaft 2' is arranged, whose shape corresponds to the first crankshaft 2. In this way it is possible to work with the device two crankshafts 2,2 'simultaneously completely. In this case, the two crankshafts 2, 2 'are expediently arranged on two separate displaceable feed carriages (not shown).

Claims (9)

  1. A device for finishing shafts, in particular crankshafts and camshafts, with
    at least one tool carrier (1) that follows the rotating motion of a work piece (2) that turns around its rotational axis (A), and
    at least one tool (4) arranged on a head section (3) of the tool carrier (1) to finish the work piece
    characterized by two bearing shafts (5, 5') arranged parallel to the work piece (2), whose design reflects the work piece (2), wherein the bearing shafts (5, 5') rotate synchronously and in phase with the work piece (2) around their axes (B, B'), and wherein the tool carrier (1) is mounted on peripheral surfaces (6, 6') of the bearing shafts (5, 5'), which correspond to the surface (7) of the work piece (2) to be machined.
  2. The device according to claim 1, characterize din that several tool carriers (1, 1', 1") are arranged along the baring shafts (5, 5') to simultaneously machine work piece surfaces (7, 8, 9) of the work piece (2).
  3. The device according to claim 1 or 2, characterized in that the ends (10, 10') of the head section (3) envelop the machining surface (7) of the work piece (2).
  4. The device according to claim 3, characterized in that the head section (3) consists of at least two pressure shoes (13, 13') that can be advanced radially to the machining surface (7) or are connected to each other so that they can swivel.
  5. The device according to claim 3, characterized in that the head section (3) is forked.
  6. The device according to one of claims 3 to 5, characterized in that the work piece (4) is designed as a grinding belt that tensions the work piece (2) between the two head section ends (10, 10') in a partially looping manner.
  7. The device according to claim 6, characterized in that the grinding belt (4) is tensioned as a continuous belt around a rotatable deflection roller (12) arranged on the tool carrier (1).
  8. The device according to claim 6, characterized in that the tool carrier (1, 1', 1") has a rotatable donor roll (13) connected with the one end of the grinding belt (4), which winds around the rotatable donor roll, and a rotatable winding roll (16) connected with the other end of the grinding belt (4).
  9. The device according to claim 1 to 8, characterized in that the end (17) of the tool carrier (1, 1', 1") opposite the head section (3) has another head section (3') with a tool (4) for simultaneously finishing a second work piece (2') that rotates synchronously and in phase with the bearing shafts (5, 5') around its axis (A'), and whose design corresponds to the first work piece (2).
EP20030011786 2003-05-24 2003-05-24 Finishing machine for crankshafts and camshafts Expired - Lifetime EP1481761B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50303194T DE50303194D1 (en) 2003-05-24 2003-05-24 Device for finish machining of shafts, in particular crankshafts and camshafts
EP20030011786 EP1481761B1 (en) 2003-05-24 2003-05-24 Finishing machine for crankshafts and camshafts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030011786 EP1481761B1 (en) 2003-05-24 2003-05-24 Finishing machine for crankshafts and camshafts

Publications (2)

Publication Number Publication Date
EP1481761A1 EP1481761A1 (en) 2004-12-01
EP1481761B1 true EP1481761B1 (en) 2006-05-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030011786 Expired - Lifetime EP1481761B1 (en) 2003-05-24 2003-05-24 Finishing machine for crankshafts and camshafts

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EP (1) EP1481761B1 (en)
DE (1) DE50303194D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4774962B2 (en) * 2005-04-11 2011-09-21 日産自動車株式会社 Crankshaft machining method and machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10009980C1 (en) * 2000-03-03 2001-08-23 Thielenhaus Ernst Gmbh & Co Kg Device for finishing shafts, in particular crankshafts and camshafts

Also Published As

Publication number Publication date
EP1481761A1 (en) 2004-12-01
DE50303194D1 (en) 2006-06-08

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