WO2003061906A1 - Roll-hardening device in a roll-hardening machine for crankshafts - Google Patents

Roll-hardening device in a roll-hardening machine for crankshafts Download PDF

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Publication number
WO2003061906A1
WO2003061906A1 PCT/EP2002/013969 EP0213969W WO03061906A1 WO 2003061906 A1 WO2003061906 A1 WO 2003061906A1 EP 0213969 W EP0213969 W EP 0213969W WO 03061906 A1 WO03061906 A1 WO 03061906A1
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WO
WIPO (PCT)
Prior art keywords
deep rolling
roller head
support roller
support rollers
axial
Prior art date
Application number
PCT/EP2002/013969
Other languages
German (de)
French (fr)
Inventor
Siegfried Bagusche
Original Assignee
Hegenscheidt-Mfd Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hegenscheidt-Mfd Gmbh & Co. Kg filed Critical Hegenscheidt-Mfd Gmbh & Co. Kg
Priority to US10/501,793 priority Critical patent/US20050066699A1/en
Priority to DE50203387T priority patent/DE50203387D1/en
Priority to EP02791800A priority patent/EP1469972B1/en
Publication of WO2003061906A1 publication Critical patent/WO2003061906A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B21H7/182—Rolling annular grooves
    • B21H7/185—Filet rolling, e.g. of crankshafts
    • 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
    • B24B39/00—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor
    • B24B39/04—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution
    • 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
    • Y10T29/17—Crankshaft making apparatus

Definitions

  • the invention relates to a deep rolling device of a deep rolling machine for crankshafts, which is designed in a scissor-type construction and in which two pivotable scissor arms opposite one another each carry a deep rolling roller head or a support roller head, the support roller head being provided with two support rollers arranged axially parallel, the axes of rotation of which are in a common one Lay level, with a drive direction that generates the closing and opening movement of the deep rolling device and the deep rolling force.
  • Deep rolling devices of the aforementioned type are known from German patent DE 197 22 308 Cl, which has the object of a deep rolling machine for crankshafts.
  • each main and connecting rod bearing journal of a crankshaft is assigned a deep rolling device.
  • the construction of the known deep rolling machine is designed so that when each deep rolling device is closed, the support rollers of the support roller head and then the ' deep rolling rollers of the deep rolling roller head are pressed onto one of the main or connecting rod journals of a crankshaft.
  • the support roller head and the deep rolling roller head perform an infeed movement and a swivel movement in each case.
  • the swiveling movement of the support roller and the deep roller head in the closing sense is associated with the risk that the support roller and the deep roller head may collide with the crankshaft in the area of an Olbund, since the clearances between the support roller and the deep roller head on the one hand and the two oil bundles of a main or connecting rod bearing pin, on the other hand, are scarce
  • the invention has for its object to design a deep rolling device of the type mentioned in such a way that the pivoting movement of the support roller and the deep rolling roller head in the closing sense cannot trigger a collision with the crankshaft in the region of an oil collar.
  • the support roller head has at least one axial guide which is arranged in the pivoting direction for closing the scissor arm carrying the support rollers, the longitudinal axis of which is perpendicular to the axis of rotation of the crankshaft and is in a direction which is flush with the plane the axes of rotation of the support rollers enclose an acute angle, and their axial width is greater than the width of the support roller head and slightly smaller than the distance between the oil collars of a main or connecting rod bearing journal.
  • Such an orientation of the deep rolling device ensures that the pivoting movement of the deep rolling roller head in the closing sense cannot lead to a collision of the deep rolling roller head with the crankshaft in the region of an oil collar.
  • the axial guide is at a distance from the common plane.
  • the outer contour of the axial guide can also have other shapes and e.g. be spherical or composed of several geometric shapes.
  • axial guides can be provided instead of a single one, which are arranged next to one another and fill the free space which is circumscribed by two adjacent oil collars.
  • Two axial guides are usual, the outer width of which is dimensioned so that both axial guides fit into the space between the oil collars with little lateral play.
  • Such an arrangement also has the advantage that the axial guides are relatively small. This will At the same time, the lateral friction between the axial guides and the oil collars is reduced.
  • Fig. 1 shows a section through a deep rolling machine with a partial view of a
  • Deep rolling device assumes its open position in relation to an inserted crankshaft
  • Fig. 2 shows the section through the deep rolling machine
  • Fig. 3 shows a detail A from Fig. 2 in an enlarged
  • Fig. 4 shows a section along the line IV - IV in
  • FIG. 5 shows a section analogous to FIG. 3 with a special arrangement of the axial guide
  • FIG. 6 shows a first embodiment of an axial guide in longitudinal section
  • Fig. 7 is a plan view of the embodiment of the
  • Fig. 8 shows a second embodiment of the axial guide in
  • a deep rolling machine 1 is designed with a drive device (not shown) which is used to receive a serves with a crankshaft transport device 2 inserted in the deep rolling machine 1 crankshaft 3.
  • the drive device produces the rotary movement of the crankshaft 3 about its axis 4 during the deep rolling of the main 5 and connecting rod bearing journals 6.
  • the axis 4 is thus in the axis of rotation 7 of the drive device.
  • the present exemplary embodiment is limited to the deep rolling of a main bearing journal 5 of the crankshaft 3, since this is sufficient to explain the subject matter of the invention.
  • the main bearing journal 5 is assigned a deep rolling device 8 which, in a scissor-type construction with two scissor arms 9, 10, a scissor pivot point 11, one
  • a deep rolling roller head 13 and a support roller head 14 is provided.
  • the deep rolling roller head 13 and the support roller head 14 cannot be moved individually in the direction along the axis of rotation 4. Rather, they are only arranged and adjustable in certain planes of the deep rolling machine 1, which correspond to the respective position of the main bearing journal 5 or connecting rod journal 6 to be machined along the axis of rotation 4 of the crankshaft 3. Such a plane is shown for example in FIG. 3 and FIG. 4.
  • the drive device 12 for the deep rolling device 8 has an adjusting cylinder 15 and a power device 16.
  • the adjusting cylinder 15 generates the closing and opening movement of the scissors 9, 10 of the deep rolling device 8 described above; the power device 16 the deep rolling force. By dividing the movements generated by the cylinders 15 and 16, a particularly narrow construction of the deep rolling device 8 is obtained.
  • the deep rolling device 8 is articulated via an articulation point 17 to an angle lever 19 which can be pivoted about an axis 18.
  • the angle lever 19 can be pivoted with the aid of a piston-cylinder unit 20.
  • the deep rolling device 8 is brought into and out of the working position, i.e. moved in the direction and opposite direction of the axis 4 of the crankshaft 3.
  • the deep rolling machine 1 is designed so that when the deep rolling device 8 is closed, the two axially parallel support rollers 21 and 22 of the support roller head 14 and then the two deep rolling rollers 23 and 24 of the deep rolling roller head 13 come to rest on the main bearing journal 5.
  • the support roller head 14 performs a pivoting movement 35 in the counterclockwise direction and the deep rolling roller head 13 performs a pivoting movement 36 in a clockwise direction about the scissor pivot point 11.
  • Both pivoting movements 35 and 36 are made in the direction of moving point 17 the axis 4 is executed simultaneously and the closed position is reached at its respective end, as shown in FIG. 2.
  • the closed position corresponds to the working position of the deep rolling device 8.
  • an axial guide 27 is arranged at an acute angle 37 between 0 and 45 ° to the plane 34, which contains the two axes of rotation 32 and 33 of the two support rollers 21 and 22.
  • the longitudinal axis 41 of the axial guide 27 is perpendicular to the axis of rotation 4 of the crankshaft 3 (FIG. 5).
  • the direction 38 of the longitudinal axis 41 of the axial guide 27 includes - viewed geometrically - the axis of rotation 4 of the crankshaft 3, i.e. the longitudinal axis 41 can oscillate about the axis of rotation 4.
  • a comparison of Figures 3 and 5 clearly shows the possibility.
  • the direction 38 falls in the section plane IV - IV, i.e. the acute angle 37 is 0 ° and the axial guide 27 has a lateral distance s from the plane 34 in which the two axes of rotation 32 and 33 lie.
  • the plane 34 and the direction 38 run parallel to one another.
  • the axial guide 27 is pointed under one in relation to the common plane 34 of the two axes of rotation 32 and 33 of the respective support rollers 21 and 22 Angle 37 inclined, which is greater than 0 °.
  • This design means that when the support roller head 14 is pivoted into the closed position in the direction of the pivoting movement 35, the axial guide 27 rushes ahead of the two support rollers 21 and 22.
  • the axial guide 27 in front of the support rollers 21 and 22 enters the free space which is circumscribed by the distance 29a of the two oil collars 25 and 26 on the main bearing journal 5. In this way it is avoided that one of the support rollers 21 or 22 runs against one of the oil bundles 25 or 26 when the deep-rolling device 8 is closed.
  • the axial guide 27 can have different shapes. In Figure 3, for example, it has a cylindrical shape. In FIG. 5, the axial guide 27 has a multiple contour, which is composed of a prismatic body 39 with chamfered edges 40. With the support roller head 14, the axial guide 27 is fastened by an Allen screw 42. In the case of bearing journals 5, which have a particularly large width 29a, instead of a single axial guide 27, two axial guides (not shown) can also be arranged next to one another, one bearing against the oil collar 25 and the second against the oil collar 26.
  • the axial guide 27 can be equipped with lateral sliding bodies 43 which are screwed to the body of the axial guide 27 via countersunk screws 44.
  • the sliding bodies 43 can consist, for example, of non-ferrous metal, Teflon, hardened or coated steel, which have particularly good sliding properties. Due to the scissor design of the deep rolling device 8, the axial guide 27 also takes over the guiding of the deep rolling roller head 13 in the axial direction of the crankshaft 3.
  • the width 28 of the axial guide 27 is larger than the width 29 of the support roller head 14 and slightly smaller than the distance 29a of the oil collars 25, 26 of the main bearing journal 5.

Abstract

The roll-hardening device (8) pertaining to a roll-hardening machine (1) for crankshafts (3) is configured like a pair of scissors. Two pivotable scissor arms (9, 10) respectively comprise a roll-hardening head (13) or a support roller head (14). The support roller head (14) is provided with two axially parallel support rollers, whereby the rotating axes thereof lie on a common plane. The support roller head (14) is also provided with an axial guide which is arranged in front of the support rollers in the direction of a pivoting (35) to ensure closure. The longitudinal axis thereof is perpendicular to the axis of rotation of the crankshaft (3), and lies on a plane forming an acute angle with the common plane of the axes of rotation of the support rollers and the axial width thereof is larger than width of the support roller head (14) and slightly smaller than the distance between the adjacent oil films of a main or connecting rod bearing journal.

Description

Festwalzgerät einer Festwalzmaschine für Kurbelwellen Deep rolling device of a deep rolling machine for crankshafts
Die Erfindung bezieht sich auf ein Festwalzgerät einer Festwalzmaschine für Kurbelwellen, das in Scherenbauweise ausgeführt ist und bei dem zwei schwenkbare Scherenarme einander gegenüberliegend jeweils einen Festwalzrollenkopf bzw. einen Stützrollenkopf tragen, wobei der Stützrollenkopf mit zwei achsparallel angeordneten Stützrollen versehen ist, deren Drehachsen in einer gemeinsamen Ebene liegen, mit einer Antriebsrichtung, die die Schließ- und Öffnungsbewegung des Festwalzgerätes sowie die Festwalzkraft erzeugt.The invention relates to a deep rolling device of a deep rolling machine for crankshafts, which is designed in a scissor-type construction and in which two pivotable scissor arms opposite one another each carry a deep rolling roller head or a support roller head, the support roller head being provided with two support rollers arranged axially parallel, the axes of rotation of which are in a common one Lay level, with a drive direction that generates the closing and opening movement of the deep rolling device and the deep rolling force.
Festwalzgeräte der vorgenannten Art sind bekannt durch die deutsche Patentschrift DE 197 22 308 Cl, die eine Festwalzmaschine für Kurbelwellen zum Gegenstand hat.Deep rolling devices of the aforementioned type are known from German patent DE 197 22 308 Cl, which has the object of a deep rolling machine for crankshafts.
Bei einer solchen Festwalzmaschine ist jedem Haupt- und Pleuellagerzapfen einer Kurbelwelle je ein Festwalzgerät zugeordnet.In such a deep rolling machine, each main and connecting rod bearing journal of a crankshaft is assigned a deep rolling device.
Die Konstruktion der bekannten Festwalzmaschine ist so ausgelegt, dass beim Schließen eines jeden Festwalzgerätes zunächst die Stützrollen des Stützrollenkopfes und danach die 'Festwalzrollen des Festwalzrollenkopfes an einen der Haupt- oder Pleuellagerzapfen einer Kurbelwelle angedrückt werden. Dabei führen der Stützrollenkopf und der Festwalzrollenkopf eine Zustellbewegung und jeweils eine Schwenkbewegung aus.The construction of the known deep rolling machine is designed so that when each deep rolling device is closed, the support rollers of the support roller head and then the ' deep rolling rollers of the deep rolling roller head are pressed onto one of the main or connecting rod journals of a crankshaft. The support roller head and the deep rolling roller head perform an infeed movement and a swivel movement in each case.
Die Schwenkbewegung des Stützrollen- und des Festwalzrollenkopfes im schließenden Sinne ist mit der Gefahr verbunden, dass es zu einer Kollision des Stützrollen- und des Festwalzrollenkopfes mit der Kurbelwelle im Bereich eines Olbundes kommen kann, da die Freiräume zwischen dem Stützrollen- und dem Festwalzrollenkopf einerseits und den beiden Ölbunden eines Haupt- oder Pleuellagerzapfens andererseits knapp bemessen sindThe swiveling movement of the support roller and the deep roller head in the closing sense is associated with the risk that the support roller and the deep roller head may collide with the crankshaft in the area of an Olbund, since the clearances between the support roller and the deep roller head on the one hand and the two oil bundles of a main or connecting rod bearing pin, on the other hand, are scarce
Der Erfindung liegt die Aufgabe zugrunde, ein Festwalzgerät der eingangs genannten Art so auszubilden, dass die Schwenkbewegung des Stützrollen- und des Festwalzrollenkopfes im schließenden Sinne keine Kollision mit der Kurbelwelle im Bereich eines Olbundes auslösen kann.The invention has for its object to design a deep rolling device of the type mentioned in such a way that the pivoting movement of the support roller and the deep rolling roller head in the closing sense cannot trigger a collision with the crankshaft in the region of an oil collar.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass der Stützrollenkopf wenigstens eine Axialführung aufweist, die in der Schwenkrichtung zum Schließen des die Stützrollen tragenden Scherenarmes vor den Stützrollen angeordnet ist, deren Längsachse zur Drehachse der Kurbelwelle senkrecht steht und in einer Richtung liegt, welche mit der Ebene der Drehachsen der Stützrollen eine spitzen Winkel einschließt, und deren axiale Breite größer als die Breite des Stützrollenkopfes und geringfügig kleiner als die Distanz der Olbunde eines Haupt- oder Pleuellagerzapfens ist. Durch die Erfindung wird beim Schließen des Festwalzgeräts erreicht, dass vor dem Anstoßen der Stützrollen gegen einen Ölbund eine Ausrichtung des Festwalzgerätes in Achsrichtung der Kurbelwelle erfolgt.According to the invention, this object is achieved in that the support roller head has at least one axial guide which is arranged in the pivoting direction for closing the scissor arm carrying the support rollers, the longitudinal axis of which is perpendicular to the axis of rotation of the crankshaft and is in a direction which is flush with the plane the axes of rotation of the support rollers enclose an acute angle, and their axial width is greater than the width of the support roller head and slightly smaller than the distance between the oil collars of a main or connecting rod bearing journal. When closing the deep rolling device, the invention ensures that before the support rollers hit an oil collar, the deep rolling device is aligned in the axial direction of the crankshaft.
Mit einer solchen Ausrichtung des Festwalzgerätes ist sichergestellt, dass auch die Schwenkbewegung des Festwalzrollenkopfes im schließenden Sinne zu keiner Kollision des Festwalzrollenkopfes mit der Kurbelwelle im Bereich eins Olbundes führen kann.Such an orientation of the deep rolling device ensures that the pivoting movement of the deep rolling roller head in the closing sense cannot lead to a collision of the deep rolling roller head with the crankshaft in the region of an oil collar.
Für den Fall, dass der spitze Winkel zwischen der Längsachse der Axialführung und der gemeinsamen Ebene, welche durch die Drehachsen der beiden Stützrollen gebildet wird, 0° beträgt, hat die Axialführung einen Abstand von der gemeinsamen Ebene. Auch kann die Außenkontur der Axialführung neben der klassisch prismatischen, oder zylindrischen noch andere Formen aufweisen und z.B. ballig oder aus mehreren geometrischen Formen zusammengesetzt sein.In the event that the acute angle between the longitudinal axis of the axial guide and the common plane, which is formed by the axes of rotation of the two support rollers, is 0 °, the axial guide is at a distance from the common plane. In addition to the classic prismatic or cylindrical shape, the outer contour of the axial guide can also have other shapes and e.g. be spherical or composed of several geometric shapes.
Zum Bearbeiten von besonders breiten Wellenlagerzapfen können anstelle einer einzelnen mehrere Axialführungen vorgesehen sein, die nebeneinander angeordnet sind und den Freiraum ausfüllen, der durch zwei benachbarte Olbunde umschrieben wird. Üblich sind zwei Axialführungen, deren äußere Breite so bemessen ist, dass beide Axialführungen mit geringem seitlichen Spiel in den Freiraum zwischen den Ölbunden hineinpassen. Eine derartige Anordnung hat auch den Vorteil, dass die Axialführungen verhältnismäßig klein sind. Dadurch wird zugleich die seitliche Reibung zwischen den Axialführungen und den Ölbunden verringert.To machine particularly wide shaft bearing journals, several axial guides can be provided instead of a single one, which are arranged next to one another and fill the free space which is circumscribed by two adjacent oil collars. Two axial guides are usual, the outer width of which is dimensioned so that both axial guides fit into the space between the oil collars with little lateral play. Such an arrangement also has the advantage that the axial guides are relatively small. This will At the same time, the lateral friction between the axial guides and the oil collars is reduced.
Nachfolgend wird die Erfindung anhand von Zeichnungen, worin Ausführungsbeispiele schematisch dargestellt sind, näher beschrieben.The invention is described in more detail below with reference to drawings, in which exemplary embodiments are shown schematically.
Es zeigen dieThey show
Fig. 1 einen Schnitt durch eine Festwalzmaschine mit einer Teilansicht einerFig. 1 shows a section through a deep rolling machine with a partial view of a
Kurbelwellentransportvorrichtung, wobei einCrankshaft transport device, one
Festwalzgerät seine Öffnungsstellung gegenüber einer eingebrachten Kurbelwelle einnimmt,Deep rolling device assumes its open position in relation to an inserted crankshaft,
Fig. 2 den Schnitt durch die Festwalzmaschine und einenFig. 2 shows the section through the deep rolling machine and one
Schnitt durch einen Hauptlagerzapfen der Kurbelwelle, wobei das Festwalzgerät in seiner Schließstellung ist,Section through a main bearing journal of the crankshaft, the deep rolling device being in its closed position,
Fig. 3 einen Ausschnitt A aus Fig. 2 in vergrößertemFig. 3 shows a detail A from Fig. 2 in an enlarged
Maßstab,Scale,
Fig. 4 einen Schnitt entsprechend der Linie IV - IV inFig. 4 shows a section along the line IV - IV in
Fig. 3,Fig. 3,
Fig. 5 einen Schnitt analog zur Fig. 3 mit einer besonderen Anordnung der Axialführung,5 shows a section analogous to FIG. 3 with a special arrangement of the axial guide,
Fig. 6 eine ersten Ausführungsform einer Axialführung im Längsschnitt,6 shows a first embodiment of an axial guide in longitudinal section,
Fig. 7 eine Draufsicht auf die Ausführungsform nach derFig. 7 is a plan view of the embodiment of the
Fig. 6,Fig. 6
Fig. 8 eine zweite Ausführungsform der Axialführung imFig. 8 shows a second embodiment of the axial guide in
Längsschnitt .Longitudinal section.
Eine Festwalzmaschine 1 ist mit einer Antriebsvorrichtung (nicht dargestellt) ausgeführt, die zur Aufnahme einer mit einer Kurbelwellentransportvorrichtung 2 in die Festwalzmaschine 1 eingebrachten Kurbelwelle 3 dient.A deep rolling machine 1 is designed with a drive device (not shown) which is used to receive a serves with a crankshaft transport device 2 inserted in the deep rolling machine 1 crankshaft 3.
Die Antriebsvorrichtung erzeugt die Drehbewegung der Kurbelwelle 3 um ihre Achse 4 während des Festwalzens der Haupt- 5 und Pleuellagerzapfen 6. Die Achse 4 liegt somit in der Drehachse 7 der Antriebsvorrichtung.The drive device produces the rotary movement of the crankshaft 3 about its axis 4 during the deep rolling of the main 5 and connecting rod bearing journals 6. The axis 4 is thus in the axis of rotation 7 of the drive device.
Das vorliegende Ausführungsbeispiel ist auf das Festwalzen eines Hauptlagerzapfens 5 der Kurbelwelle 3 beschränkt, da dies zur Erläuterung des Erfindungsgegenstandes ausreicht .The present exemplary embodiment is limited to the deep rolling of a main bearing journal 5 of the crankshaft 3, since this is sufficient to explain the subject matter of the invention.
Dem Hauptlagerzapfen 5 ist ein Festwalzgerät 8 zugeordnet, das in Scherenbauweise mit zwei Scherenarmen 9, 10, einem Scherendrehpunkt 11, einerThe main bearing journal 5 is assigned a deep rolling device 8 which, in a scissor-type construction with two scissor arms 9, 10, a scissor pivot point 11, one
Antriebseinrichtung 12, einem Festwalzrollenkopf 13 und einem Stützrollenkopf 14 versehen ist. Infolge der Scherenbauweise sind der Festwalzrollenkopf 13 und der Stützrollenkopf 14 einzeln in Richtung entlang der Drehachse 4 nicht verschiebbar. Vielmehr sind sie nur in bestimmten Ebenen der Festwalzmaschine 1 angeordnet und einstellbar, welche der jeweiligen Lage der zu bearbeitenden Hauptlagerzapfen 5 bzw. Pleuellagerzapfen 6 längs der Drehachse 4 der Kurbelwelle 3 entsprechen. Eine derartige Ebene ist beispielsweise in der Fig. 3 und der Fig. 4 dargestellt.Drive device 12, a deep rolling roller head 13 and a support roller head 14 is provided. As a result of the scissor design, the deep rolling roller head 13 and the support roller head 14 cannot be moved individually in the direction along the axis of rotation 4. Rather, they are only arranged and adjustable in certain planes of the deep rolling machine 1, which correspond to the respective position of the main bearing journal 5 or connecting rod journal 6 to be machined along the axis of rotation 4 of the crankshaft 3. Such a plane is shown for example in FIG. 3 and FIG. 4.
Die Antriebeinrichtung 12 für das Festwalzgerät 8 hat einen Verstellzylinder 15 und ein Kraftgerät 16. Der Verstellzylinder 15 erzeugt die Schließ- und Öffnungsbewegung der vorstehend beschriebenen Schere 9, 10 des Festwalzgerätes 8; das Kraftgerät 16 die Festwalzkraft. Durch die Unterteilung der von den Zylindern 15 und 16 erzeugten Bewegungen wird eine besonders schmale Bauweise des Festwalzgerätes 8 erhalten.The drive device 12 for the deep rolling device 8 has an adjusting cylinder 15 and a power device 16. The adjusting cylinder 15 generates the closing and opening movement of the scissors 9, 10 of the deep rolling device 8 described above; the power device 16 the deep rolling force. By dividing the movements generated by the cylinders 15 and 16, a particularly narrow construction of the deep rolling device 8 is obtained.
Das Festwalzgerät 8 ist über einen Anlenkpunkt 17 an einem um eine Achse 18 schwenkbaren Winkelhebel 19 angelenkt .The deep rolling device 8 is articulated via an articulation point 17 to an angle lever 19 which can be pivoted about an axis 18.
Der Winkelhebel 19 kann mit Hilfe einer Kolbenzylindereinheit 20 geschwenkt werden. Durch Betätigung der Kolben-Zylindereinheit 20 wird das Festwalzgerät 8 in die und aus der Arbeitsstellung gebracht, d.h. in Richtung und Gegenrichtung der Achse 4 der Kurbelwelle 3 bewegt.The angle lever 19 can be pivoted with the aid of a piston-cylinder unit 20. By actuating the piston-cylinder unit 20, the deep rolling device 8 is brought into and out of the working position, i.e. moved in the direction and opposite direction of the axis 4 of the crankshaft 3.
Die Festwalzmaschine 1 ist so ausgelegt, dass beim Schließen des Festwalzgerätes 8 zunächst die beiden achsparallel angeordneten Stützrollen 21 und 22 des Stützrollenkopfes 14 und danach die beiden Festwalzrollen 23 und 24 des Festwalzrollenkopfes 13 an dem Hauptlagerzapfen 5 zur Anlage kommen.The deep rolling machine 1 is designed so that when the deep rolling device 8 is closed, the two axially parallel support rollers 21 and 22 of the support roller head 14 and then the two deep rolling rollers 23 and 24 of the deep rolling roller head 13 come to rest on the main bearing journal 5.
Hierbei führen, in der Ansicht der Fig. 1, der Stützrollenkopf 14 eine Schwenkbewegung 35 im Gegenuhrzeigersinne und der Festwalzrollenkopf 13 eine Schwenkbewegung 36 im Uhrzeigersinn um den Scherendrehpunkt 11 aus. Beide Schwenkbewegungen 35 und 36 werden unter Bewegung des Punktes 17 in Richtung auf die Achse 4 gleichzeitig ausgeführt und an ihrem jeweiligen Ende wird die Schließstellung erreicht, wie sie in der Fig. 2 dargestellt ist. Die Schließstellung entspricht der Arbeitsstellung des Festwalzgerätes 8.Here, in the view of FIG. 1, the support roller head 14 performs a pivoting movement 35 in the counterclockwise direction and the deep rolling roller head 13 performs a pivoting movement 36 in a clockwise direction about the scissor pivot point 11. Both pivoting movements 35 and 36 are made in the direction of moving point 17 the axis 4 is executed simultaneously and the closed position is reached at its respective end, as shown in FIG. 2. The closed position corresponds to the working position of the deep rolling device 8.
Bei den Schwenkbewegungen 35 bzw. 36 des Stützrollen- 14 und des Festwalzrollenkopfes 13 im schließenden Sinne wird eine Kollision mit einem der beiden Olbunde 25 oder 26 des Hauptlagerzapfens 5 durch eine Axialführung 27 vermieden. Die Axialführung 27 ist unter einem spitzen Winkel 37 zwischen 0 und 45° zur Ebene 34 angeordnet, welche die beiden Drehachsen 32 und 33 der beiden Stützrollen 21 und 22 enthält. Die Längsachse 41 der Axialführung 27 steht zur Drehachse 4 der Kurbelwelle 3 senkrecht (Fig. 5) .During the swiveling movements 35 and 36 of the support roller 14 and the deep rolling roller head 13 in the closing sense, a collision with one of the two oil collars 25 or 26 of the main bearing journal 5 is avoided by an axial guide 27. The axial guide 27 is arranged at an acute angle 37 between 0 and 45 ° to the plane 34, which contains the two axes of rotation 32 and 33 of the two support rollers 21 and 22. The longitudinal axis 41 of the axial guide 27 is perpendicular to the axis of rotation 4 of the crankshaft 3 (FIG. 5).
Die Richtung 38 der Längsachse 41 der Axialführung 27 schließt - geometrisch gesehen - die Drehachse 4 der Kurbelwelle 3 mit ein, d.h. die Längsachse 41 kann um die Drehachse 4 pendeln. Ein Vergleich der Figuren 3 und 5 zeigt die Möglichkeit deutlich auf. Beispielsweise in der Ansicht der Figur 3 fällt die Richtung 38 in die Schnittebene IV - IV, d.h. der spitze Winkel 37 beträgt 0° und die Axialführung 27 hat von der Ebene 34, in welcher die beiden Drehachsen 32 und 33 liegen, einen seitlichen Abstand s. In diesem speziellen Falle verlaufen die Ebene 34 und die Richtung 38 zueinander parallel .The direction 38 of the longitudinal axis 41 of the axial guide 27 includes - viewed geometrically - the axis of rotation 4 of the crankshaft 3, i.e. the longitudinal axis 41 can oscillate about the axis of rotation 4. A comparison of Figures 3 and 5 clearly shows the possibility. For example, in the view of Figure 3, the direction 38 falls in the section plane IV - IV, i.e. the acute angle 37 is 0 ° and the axial guide 27 has a lateral distance s from the plane 34 in which the two axes of rotation 32 and 33 lie. In this special case, the plane 34 and the direction 38 run parallel to one another.
In der Figur 5 hingegen ist die Axialführung 27 gegenüber der gemeinsamen Ebene 34 der beiden Drehachsen 32 und 33 der jeweiligen Stützrollen 21 und 22 unter einem spitzen Winkel 37 geneigt, der größer als 0° ist. Diese Bauweise bedingt, dass beim Einschwenken des Stützrollenkopfes 14 in die Schließstellung in Richtung der Schwenkbewegung 35, die Axialführung 27 den beiden Stützrollen 21 und 22 voraus eilt. Dabei tritt die Axialführung 27 vor den Stützrollen 21 und 22 in den Freiraum ein, der durch die Distanz 29a der beiden Olbunde 25 und 26 am Hauptlagerzapfen 5 umschrieben wird. Auf diese Weise wird vermieden, dass eine der Stützrollen 21 oder 22 beim Schließen des Festwalzgerätes 8 gegen einen der Olbunde 25 oder 26 anläuft.In FIG. 5, on the other hand, the axial guide 27 is pointed under one in relation to the common plane 34 of the two axes of rotation 32 and 33 of the respective support rollers 21 and 22 Angle 37 inclined, which is greater than 0 °. This design means that when the support roller head 14 is pivoted into the closed position in the direction of the pivoting movement 35, the axial guide 27 rushes ahead of the two support rollers 21 and 22. The axial guide 27 in front of the support rollers 21 and 22 enters the free space which is circumscribed by the distance 29a of the two oil collars 25 and 26 on the main bearing journal 5. In this way it is avoided that one of the support rollers 21 or 22 runs against one of the oil bundles 25 or 26 when the deep-rolling device 8 is closed.
Die Axialführung 27 kann unterschiedliche Formen haben. In der Figur 3 hat sie beispielsweise eine zylindrische Form. In der Figur 5 hat die Axialführung 27 eine Mehrfachkontur, die sich aus einem prismatischen Körper 39 mit angefasten Kanten 40 zusammensetzt. Mit dem Stützrollenkopf 14 ist die Axialführung 27 durch eine Imbusschraube 42 befestigt. Bei Lagerzapfen 5, die eine besonders große Breite 29a haben, können anstelle einer einzelnen Axialführung 27 auch zwei Axialführungen (nicht gezeigt) nebeneinander angeordnet sein, wobei sich die eine an den Ölbund 25 und die zweite an den Ölbund 26 anlegt .The axial guide 27 can have different shapes. In Figure 3, for example, it has a cylindrical shape. In FIG. 5, the axial guide 27 has a multiple contour, which is composed of a prismatic body 39 with chamfered edges 40. With the support roller head 14, the axial guide 27 is fastened by an Allen screw 42. In the case of bearing journals 5, which have a particularly large width 29a, instead of a single axial guide 27, two axial guides (not shown) can also be arranged next to one another, one bearing against the oil collar 25 and the second against the oil collar 26.
Anstelle des prismatischen Körpers 39 kann die Axialführung 27 mit seitlichen Gleitkörpern 43 bestückt sein, die über Senkschrauben 44 mit dem Körper der Axialführung 27 verschraubt sind. Die Gleitkörper 43 können z.B. aus Buntmetall, Teflon, gehärtetem oder beschichtetem Stahl bestehen, welche besonders gute Gleiteigenschaften haben. Aufgrund der Scherenbauweise des Festwalzgerätes 8 übernimmt die Axialführung 27 zugleich auch die Führung des Festwalzrollenkopfes 13 in axialer Richtung der Kurbelwelle 3.Instead of the prismatic body 39, the axial guide 27 can be equipped with lateral sliding bodies 43 which are screwed to the body of the axial guide 27 via countersunk screws 44. The sliding bodies 43 can consist, for example, of non-ferrous metal, Teflon, hardened or coated steel, which have particularly good sliding properties. Due to the scissor design of the deep rolling device 8, the axial guide 27 also takes over the guiding of the deep rolling roller head 13 in the axial direction of the crankshaft 3.
Die Breite 28 der Axialführung 27 ist größer als die Breite 29 des Stützrollenkopfes 14 und geringfügig kleiner als die Distanz 29a der Olbunde 25, 26 des Hauptlagerzapfens 5.The width 28 of the axial guide 27 is larger than the width 29 of the support roller head 14 and slightly smaller than the distance 29a of the oil collars 25, 26 of the main bearing journal 5.
In der Schließstellung des Festwalzgeräts 8 (Fig. 2) sind für die beiden Freiräume 30, 31 zwischen den Ölbunden 25, 26 und der Axialführung 27 auf jeder Seite ca. 0,25 mm Spiel vorgesehen. In the closed position of the deep rolling device 8 (FIG. 2), approximately 0.25 mm play is provided for the two free spaces 30, 31 between the oil collars 25, 26 and the axial guide 27 on each side.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Festwalzmaschine1 deep rolling machine
2 KurbelWellentransportVorrichtung2 crankshaft transport device
3 Kurbelwelle3 crankshaft
4 (Dreh-) Achse der Kurbelwelle4 (rotary) axis of the crankshaft
5 Hauptlagerzapfen5 main journals
6 Pleuellagerzapfen6 connecting rod journals
7 Drehachse der Antriebsvorrichtung7 axis of rotation of the drive device
8 Festwalzgerät8 deep rolling unit
9 Scherenarm9 scissor arm
10 Scherenarm10 scissor arm
11 Scherendrehpunkt11 scissor pivot
12 Antriebseinrichtung12 drive device
13 Festwalzrollenkopf13 deep rolling roller head
14 Stützrollenkopf14 support roller head
15 Verstellzylinder15 adjustment cylinders
16 Kraftgerät16 strength machine
17 Anlenkpunkt17 pivot point
18 Achse18 axis
19 Winkelhebel19 angle lever
20 Kolben-Zylindereinheit20 piston-cylinder unit
21 Stützrolle21 support roller
22 Stützrolle22 support roller
23 Festwalzrolle23 deep rolling roller
24 Festwalzrolle24 deep rolling roller
25 Ölbund25 bundle of oil
26 Ölbund26 bundle of oil
27 Axialführung27 Axial guidance
28 Durchmesser der Axialführung Breite des Stützrollenkopfes Distanz der Olbunde Freiraum Freiraum Achse der Stützrolle Achse der Stützrolle Ebene durch die Achsen 32 und 33 Schwenkbewegung im Gegenuhrzeigersinn Schwenkbewegung im Uhrzeigersinn spitzer Winkel Richtung prismatischer Körper angefaste Kante Längsachse Imbusschraube seitlicher Gleitkörper Senkschraube seitlicher Abstand 28 diameter of the axial guide Width of the support roller head Distance of the oil collars Free space Free space Axis of the support roller Axis of the support roller Plane through axes 32 and 33 Swivel movement counterclockwise Swivel movement clockwise acute angle Direction prismatic body chamfered edge Longitudinal axis Allen screw side slider Countersunk screw lateral distance

Claims

P A T E N T AN S P RÜ C H EP A T E N T AN S P RÜ C H E
Festwalzgerät einer Festwalzmaschine für Kurbelwellen, das in Scherenbauweise ausgeführt ist und bei dem zwei schwenkbare Scherenarme einander gegenüberliegend jeweils einen Festwalzrollenkopf bzw. einen Stützrollenkopf tragen, wobei der Stützrollenkopf mit zwei achsparallel angeordneten Stützrollen versehen ist, deren Drehachsen in einer gemeinsamen Ebene liegen mit einer Antriebseinrichtung, die die Schließ- und Öffnungsbewegung des Festwalzgeräts sowie die Festwalzkraft erzeugt, d a d u r c h g e k e n n z e i c h n e t, dass der Stützrollenkopf (14) wenigstens eine Axialführung (27) aufweist,Deep rolling device of a deep rolling machine for crankshafts, which is designed in a scissor-type construction and in which two pivotable scissor arms opposite one another each carry a deep-rolling roller head or a support roller head, the support roller head being provided with two support rollers arranged axially parallel, the axes of rotation of which lie in a common plane with a drive device, which generates the closing and opening movement of the deep rolling device and the deep rolling force, characterized in that the support roller head (14) has at least one axial guide (27),
- die in der Schwenkrichtung (35) zum Schließen des die Stützrollen (21, 22) tragenden Scherenarmes (10) vor den Stützrollen (21, 22) angeordnet ist,- which is arranged in front of the support rollers (21, 22) in the pivoting direction (35) for closing the scissor arm (10) carrying the support rollers (21, 22),
- deren Längsachse (41) zur Drehachse (4) der Kurbelwelle (3) senkrecht steht und in einer Richtung- The longitudinal axis (41) to the axis of rotation (4) of the crankshaft (3) is perpendicular and in one direction
(38) liegt, welche mit der Ebene (34) der Drehachsen (32, 33) der Stützrollen (21, 22) einen spitzen Winkel (37) einschließt und(38), which includes an acute angle (37) with the plane (34) of the axes of rotation (32, 33) of the support rollers (21, 22) and
- deren axiale Breite (28) größer als die Breite (29) des Stützrollenkopfes (14) und geringfügig kleiner als die Distanz (29a) der Olbunde (25, 26) eines Haupt- (5) oder Pleuellagerzapfens (6) ist. - whose axial width (28) is greater than the width (29) of the support roller head (14) and slightly smaller than the distance (29a) of the oil collars (25, 26) of a main (5) or connecting rod bearing journal (6).
2. Festwalzgerät nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass der spitze Winkel2. Deep rolling device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the acute angle
(37) 0° beträgt und die Längsachse (41) der Axialführung (27) einen Abstand (s) von der Ebene (34) hat.(37) is 0 ° and the longitudinal axis (41) of the axial guide (27) is at a distance (s) from the plane (34).
3. Festwalzgerät nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass die Axialführung3. Deep rolling device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the axial guide
(27) eine prismatische, zylindrische, ballige oder aus unterschiedlichen geometrischen Abschnitten (39, 40) zusammengesetzte Kontur hat.(27) has a prismatic, cylindrical, spherical or composed of different geometric sections (39, 40).
4. Festwalzgerät nach einem der Ansprüche 1 bis 3, d a d u r.c h g e k e n n z e i c h n e t , dass zwei Stützrollen (21, 22) jeweils mehrere Axialführungen (27) zugeordnet sind, deren jeweilige axiale Breite (28) kleiner als die Breite (29) des Stützrollenkopfes (14) ist und deren äußere Breite geringfügig kleiner ist als die Distanz (29a) der Olbunde (25, 26) eines Haupt- (5) oder Pleuellagerzpafens (6) . 4. deep rolling device according to any one of claims 1 to 3, dadu rc hgek Indicates that two support rollers (21, 22) are each assigned a plurality of axial guides (27), the respective axial width (28) smaller than the width (29) of the support roller head (14 ) and whose outer width is slightly smaller than the distance (29a) of the oil bundles (25, 26) of a main (5) or connecting rod bearing (6).
PCT/EP2002/013969 2002-01-23 2002-12-10 Roll-hardening device in a roll-hardening machine for crankshafts WO2003061906A1 (en)

Priority Applications (3)

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US10/501,793 US20050066699A1 (en) 2002-01-23 2002-12-10 Roll-hardening device in a roll-hardening machine for crankshafts
DE50203387T DE50203387D1 (en) 2002-01-23 2002-12-10 FIXED ROLLER DEVICE FOR A FIXED ROLLING MACHINE FOR CRANKSHAFTS
EP02791800A EP1469972B1 (en) 2002-01-23 2002-12-10 Deep-rolling device of a deep-rolling machine for crankshafts

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DE20200926U DE20200926U1 (en) 2002-01-23 2002-01-23 Deep rolling device of a deep rolling machine for crankshafts
DE20200926.2 2002-01-23

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EP (1) EP1469972B1 (en)
CN (1) CN1615205A (en)
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EP1469972B1 (en) 2005-06-08
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DE50203387D1 (en) 2005-07-14
DE20200926U1 (en) 2002-04-18

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