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WO2011050897A1 - Procédé de fabrication d'un module d'arbre à cames, module d'arbre à cames ainsi qu'arbre à cames assemblé - Google Patents

Procédé de fabrication d'un module d'arbre à cames, module d'arbre à cames ainsi qu'arbre à cames assemblé Download PDF

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Publication number
WO2011050897A1
WO2011050897A1 PCT/EP2010/006121 EP2010006121W WO2011050897A1 WO 2011050897 A1 WO2011050897 A1 WO 2011050897A1 EP 2010006121 W EP2010006121 W EP 2010006121W WO 2011050897 A1 WO2011050897 A1 WO 2011050897A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft body
camshaft
bearing
tolerance ring
functional component
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.)
Ceased
Application number
PCT/EP2010/006121
Other languages
German (de)
English (en)
Inventor
Jonathan Heywood
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.)
Thyssenkrupp Dynamic Components Teccenter AG
Original Assignee
ThyssenKrupp Presta TecCenter AG
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 ThyssenKrupp Presta TecCenter AG filed Critical ThyssenKrupp Presta TecCenter AG
Publication of WO2011050897A1 publication Critical patent/WO2011050897A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0829—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial loading of both hub and shaft by an intermediate ring or sleeve
    • F16D1/0835—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial loading of both hub and shaft by an intermediate ring or sleeve due to the elasticity of the ring or sleeve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/02—Camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2303/00—Manufacturing of components used in valve arrangements

Definitions

  • the present invention relates to a method for producing a camshaft module, a camshaft module produced in particular according to this method, and a camshaft which is particularly suitable for use in the camshaft module according to the invention.
  • a cylinder head for an internal combustion engine which has a camshaft housing, which has a base body, a cover and at least one mounted in bearings the gas exchange valves of an internal combustion engine controlling camshaft.
  • the bearings are formed by aligned cylindrical holes in spaced parallel webs whose diameter is less than that of the cam elements.
  • the (built) camshaft consists of parts which can be joined together in the cylinder head, with bearing elements being inserted into the bores and connected rotationally fixed to the camshaft elements.
  • a cylinder head cover with integrated camshaft and a known method for producing this cylinder head cover has at least one camshaft which protrudes through at least one bearing bridge along a bearing lane for the camshaft in the cylinder head cover.
  • the bearing bridge on an opening or bore, which completely surrounds the camshaft in this area.
  • the cylinder head cover described is produced according to a method in which first the camshaft is cooled to a temperature which is below the temperature of the cylinder head cover (which is for example at room temperature).
  • An assembly aid ensures the correct alignment of the cams, in particular for the correct distance and the predetermined rotation of the same.
  • the temperature difference between the cylinder head cover and to be introduced camshaft be increased by the fact that the cylinder head cover is heated accordingly.
  • a camshaft for actuating valve pulses in internal combustion engines in which individual cam elements are pressed using a tolerance ring on a camshaft body (press fit). During assembly, the tolerance rings are inserted into the bore of the cam and the thus prepared cam is then pushed in a corresponding angular position relative to the camshaft on this.
  • Object of the present invention is to provide a camshaft, a camshaft module and a method for producing a camshaft module, in each case a fast and cost-effective fixation of the functional elements is ensured on the camshaft.
  • a structurally simplified shaft / hub connection is to be created, which ensures a simplified operation with regard to the assembly of a camshaft in a closed bearing frame or in a bearing frame with peripherally closed (in particular integrally executed) bearing receptacles.
  • the inventive method is used to produce a camshaft module with pre-assembled camshaft, wherein the camshaft module a bearing device - for example in the form of a one-piece closed lead frame or in the form of a closed cylinder head cover - with a plurality of circumferentially closed, one-piece executed bearing mounts for rotatably supporting a shaft body of a built or Has built-in camshaft.
  • the final determination of the threaded functional elements takes place on the shaft body by individual circumferentially not closed tolerance rings are axially positioned on the shaft body and the individual functional elements on the them respectively assigned and axially positioned tolerance ring pushed laterally and so by means of press connection on the shaft body rotationally fixed and fixed against displacement.
  • the tolerance rings can also be threaded onto the shaft body during the lateral insertion process of the shaft body through the closed bearing receptacle (s) of the bearing device.
  • the tolerance rings can also be expanded and attached radially from the outside to the shaft body.
  • the tolerance rings are positioned axially on the shaft body by holding the Tole- ranzringe as a whole over its entire width or with a radially inwardly projecting annular extension in a corresponding recess (groove) of the shaft body (and against axial displacement secured) are.
  • the invention comprises a camshaft module with a bearing device with a plurality of circumferentially closed one-piece bearing receptacles and with a built-in camshaft built into the bearing device.
  • the camshaft is arranged rotatably mounted in the plurality of bearing mounts, wherein in a formed between two adjacent bearing mounts mounting portion of the bearing device, one or more cam element (s) (functional element (s)) by means of press connection, including each one arranged on the shaft body tolerance ring rotating - And fixed on the shaft body is / are arranged.
  • the invention comprises a correspondingly constructed camshaft for actuating gas exchange valves of an internal combustion engine, in which individual cam elements (functional components) are arranged on the shaft body by means of press-connection rotationally and non-displaceably via tolerance rings arranged in circumferential grooves of the shaft body.
  • FIG. 2 shows a detail of a detail in which a functional element is shown on a shaft body of a camshaft designed according to the invention
  • Fig. 3a-3d a tolerance ring, as it is used according to FIGS. 1 and 2, in one possible embodiment, in different views.
  • FIG. 1 is a schematic, in a fragmentary longitudinal sectional view, a camshaft module according to the invention during the assembly process shown.
  • the camshaft module 2 of FIG. 1 shows a schematic representation of a designed as a closed lead frame bearing device with a plurality of circumferentially closed integrally executed bearing receivers 4 for receiving a shaft body 6 of a built camshaft 8.
  • the shaft body 6 is guided by receiving the individual réellefadelnden functional elements 10 into an opposite bearing seat 4, wherein the shaft body 6 is arranged rotatably mounted in the bearing receivers 4 and to arrange.
  • bearings (not shown) may be present or subsequently introduced or be pressed laterally between the shaft body and bearing seat 4 in the bearing mounts.
  • the shaft body 6 can be accommodated in corresponding plain bearing bushes of the bearing receptacles 4.
  • a tolerance ring (fitting ring) 12 is threaded onto the shaft body 6 in addition to the individual functional elements 10, during the lateral insertion process of the shaft body 6, per functional element 10.
  • these can also after completed Einschiebevorgang the shaft body 6 and threading of the functional elements 10 by corresponding expansion radially from the outside to the camshaft or the shaft body 6 are applied (eg by a so-called. Clipping - with advantage with subsequent locking the tolerance rings 12 on the shaft body 6).
  • the tolerance rings 12 can be positioned axially on the shaft body 6 in a final assembly step and the respective functional elements 10 pushed onto their associated tolerance ring 12 in a corresponding rotational orientation and there according to rotation and displacement by means Press fit be positioned.
  • the interference fit can be realized with a tolerance ring 12 arranged on a smooth (not profiled) shaft body 6 or in another embodiment with a tolerance ring 12 arranged in a peripheral groove 14 of the shaft body 6.
  • the design of a press connection between the functional element 10, tolerance ring 12 and shaft body 6 with a groove 14 has the advantage that the tolerance ring 14 and thus the tolerance ring 12 associated functional element 10 is axially correctly positioned.
  • the functional element 10 is to be fixed, introduced.
  • the diameter of the passage opening (bore) of the functional element 10 is greater than or equal to the diameter of the shaft body 6, so that the functional element 10 slides on the shaft body 6 or has a slight clearance.
  • the axial width B groove of the groove 14 is dimensioned advantageously smaller than the width B of the functional element 10. This has particular advantages with regard to the centering of the functional element 10 to the shaft body 6.
  • the diameter of the passage openings of the functional elements 10 is approximately equal to the diameter the bearing seat 4 of the bearing device (bearing frame).
  • the functional elements 10 by lateral sliding on the Toferanzringe 12 are fixed at the corresponding axially predetermined positions via a press connection. This process can also be carried out automatically or semi-automatically via the corresponding delivery device.
  • FIG. 2 a corresponding press-fit connection of a functional element 10 arranged on the shaft body 6 of the built-up camshaft 8 is shown in an enlarged view.
  • the tolerance ring 12 used here is shown in more detail in FIGS. 3a-3d.
  • Such a tolerance ring 12, via which a frictional shaft-hub connection between the functional element 10 and shaft body 6 is to be produced, is configured in such a way that it generates an internal radial tension between the components to be connected.
  • the positive deformations required for the generation of the radial prestressing force are absorbed by the tolerance ring 12 arranged between shaft (shaft body 6) and hub (through-opening of functional element 10).
  • the tolerance ring 12 can for example be slotted or have corrugated rings made of thin spring steel which have a large number of longitudinal beads or projections which distribute uniformly over the circumference.
  • the interference fit connection by means of tolerance ring 12 can take place via a tolerance ring 12 mounted on a smooth shaft body 6 or, in a preferred embodiment, via a tolerance ring 12 mounted in a groove 14.
  • the tolerance ring is shown in a radial plan view.
  • FIG. 3b shows the tolerance ring 12 according to FIG. 3a in a side view.
  • the circumferentially distributed projections of the tolerance ring 12, which is preferably made of spring steel, are shown in possible embodiments (cross-sectional representation of the tolerance ring 12).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un module d'arbre à cames (2) ainsi qu'un module d'arbre à cames et un arbre à cames assemblé, notamment à utiliser dans un tel module d'arbre à cames. Un tel module d'arbre à cames comprend un dispositif de palier muni d'une pluralité de logements de palier (4) axialement espacés, fermés sur leur pourtour, réalisés en une pièce, pour le support rotatif d'un corps (6) d'un arbre à cames assemblé (8), ainsi qu'un arbre à cames assemblé (8) dans lequel des éléments fonctionnels (10) sont pressés sur le corps (6) d'arbre en utilisant une bague de tolérance (12). Le procédé selon l'invention comprend les étapes suivantes: production d'un dispositif de palier, positionnement de l'élément fonctionnel (10) dans la zone de montage (MB), insertion latérale du corps d'arbre (6) dans la zone de montage (MB) à travers un des logements de palier (4) fermés et enfilage de l'élément fonctionnel (10) positionné dans la zone de montage (MB), ainsi que montage et positionnement axial d'une bague de tolérance (12) sur le corps (6) d'arbre et établissement d'une liaison par pressage entre le corps (6) d'arbre, la bague de tolérance (12) et l'élément fonctionnel (10) par déplacement relatif axial entre la bague de tolérance (12) et l'élément fonctionnel (10). L'arbre à cames (8) selon l'invention est caractérisé en ce que la bague de tolérance (12) est disposée pour la liaison par pressage entre des éléments fonctionnels (10) et le corps (6) d'arbre à cames dans une rainure périphérique (14) du corps (6) d'arbre à cames.
PCT/EP2010/006121 2009-11-02 2010-10-07 Procédé de fabrication d'un module d'arbre à cames, module d'arbre à cames ainsi qu'arbre à cames assemblé Ceased WO2011050897A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009051636A DE102009051636A1 (de) 2009-11-02 2009-11-02 Verfahren zur Herstellung eines Nockenwellenmoduls, Nockenwellenmodul sowie gebauten Nockenwelle
DE102009051636.0 2009-11-02

Publications (1)

Publication Number Publication Date
WO2011050897A1 true WO2011050897A1 (fr) 2011-05-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/006121 Ceased WO2011050897A1 (fr) 2009-11-02 2010-10-07 Procédé de fabrication d'un module d'arbre à cames, module d'arbre à cames ainsi qu'arbre à cames assemblé

Country Status (2)

Country Link
DE (1) DE102009051636A1 (fr)
WO (1) WO2011050897A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011117849A1 (de) * 2011-11-08 2013-05-08 Neumayer Tekfor Holding Gmbh Verfahren zur Fertigung einer Nockenwelle und entsprechende Nockenwelle

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012007334A1 (de) * 2012-04-12 2013-10-17 Neumayer Tekfor Holding Gmbh Verfahren zum Herstellen eines Nockenwellenmoduls und entsprechendes Nockenwellenmodul
DE102012206499A1 (de) 2012-04-19 2013-10-24 Mahle International Gmbh Nockenwellenmodul und zugehöriges Herstellungsverfahren
DE102012016357A1 (de) 2012-08-16 2014-02-20 Neumayer Tekfor Holding Gmbh Verfahren zur Herstellung eines Nockenwellenmoduls und entsprechendes Nockenwellenmodul
DE102014101088B4 (de) * 2014-01-29 2015-12-17 Thyssenkrupp Presta Teccenter Ag Verfahren zum Zusammenbau eines Kraftfahrzeugmoduls
DE102014116207A1 (de) * 2014-11-06 2016-05-12 Thyssenkrupp Presta Teccenter Ag Verfahren zur Montage eines Nockenwellenmoduls
DE102015102793B4 (de) 2015-02-26 2017-03-30 Mbb Fertigungstechnik Gmbh Verfahren und Vorrichtung zum Fügen von Anbauteilen auf einer Trägerwelle sowie Heizvorrichtung
DE102016114602A1 (de) 2016-08-05 2018-02-08 Thyssenkrupp Ag Zylinderkopfhaubenmodul und Verfahren zu dessen Herstellung
DE102017125638B4 (de) 2017-11-02 2021-12-09 Thyssenkrupp Ag Schiebenockensystem, Nockenwellenmodul, Brennkraftmaschine und Verfahren zur Herstellung eines Schiebenockensystems

Citations (6)

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Publication number Priority date Publication date Assignee Title
DE3606111C2 (fr) 1986-02-26 1992-09-03 Etablissement Supervis, Vaduz, Li
DE19831772A1 (de) 1997-07-16 1999-01-28 Stefan Battlogg Zylinderkopf, Nockenwelle und Verfahren zur Montage einer Nockenwelle in einem Zylinderkopf
DE10331089A1 (de) 2003-07-09 2005-02-24 Volkswagen Ag Zylinderkopfhaube und Verfahren zur Herstellung
DE102004018685A1 (de) * 2004-04-17 2005-09-08 Daimlerchrysler Ag Nockenwelle, Verfahren zum Herstellen einer Nockenwelle und Vorrichtung zur Durchführung des Verfahrens
US20080250895A1 (en) * 2005-01-20 2008-10-16 Tamotsu Yamamoto Rotating Assembly and Its Manufacturing Method
DE102007056638A1 (de) * 2007-11-24 2009-05-28 Usk Karl Utz Sondermaschinen Gmbh Verfahren und Vorrichtung zur Montage von einem Verbund, insbesondere aus einer Nockenwelle und einem Gehäuse

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3606111C2 (fr) 1986-02-26 1992-09-03 Etablissement Supervis, Vaduz, Li
DE19831772A1 (de) 1997-07-16 1999-01-28 Stefan Battlogg Zylinderkopf, Nockenwelle und Verfahren zur Montage einer Nockenwelle in einem Zylinderkopf
DE10331089A1 (de) 2003-07-09 2005-02-24 Volkswagen Ag Zylinderkopfhaube und Verfahren zur Herstellung
DE102004018685A1 (de) * 2004-04-17 2005-09-08 Daimlerchrysler Ag Nockenwelle, Verfahren zum Herstellen einer Nockenwelle und Vorrichtung zur Durchführung des Verfahrens
US20080250895A1 (en) * 2005-01-20 2008-10-16 Tamotsu Yamamoto Rotating Assembly and Its Manufacturing Method
DE102007056638A1 (de) * 2007-11-24 2009-05-28 Usk Karl Utz Sondermaschinen Gmbh Verfahren und Vorrichtung zur Montage von einem Verbund, insbesondere aus einer Nockenwelle und einem Gehäuse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011117849A1 (de) * 2011-11-08 2013-05-08 Neumayer Tekfor Holding Gmbh Verfahren zur Fertigung einer Nockenwelle und entsprechende Nockenwelle

Also Published As

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