WO2011069591A1 - Arbre à cames assemblé, corps de base d'arbre à cames et procédé pour fabriquer un arbre à cames assemblé - Google Patents

Arbre à cames assemblé, corps de base d'arbre à cames et procédé pour fabriquer un arbre à cames assemblé Download PDF

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Publication number
WO2011069591A1
WO2011069591A1 PCT/EP2010/006884 EP2010006884W WO2011069591A1 WO 2011069591 A1 WO2011069591 A1 WO 2011069591A1 EP 2010006884 W EP2010006884 W EP 2010006884W WO 2011069591 A1 WO2011069591 A1 WO 2011069591A1
Authority
WO
WIPO (PCT)
Prior art keywords
camshaft
main body
axial
section
cam member
Prior art date
Application number
PCT/EP2010/006884
Other languages
German (de)
English (en)
Inventor
Guido Scherzinger
Manfred Muster
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
Priority to US13/514,657 priority Critical patent/US8844130B2/en
Priority to BR112012013814A priority patent/BR112012013814B1/pt
Priority to CN201080055604.6A priority patent/CN102883854B/zh
Priority to JP2012542382A priority patent/JP5980120B2/ja
Publication of WO2011069591A1 publication Critical patent/WO2011069591A1/fr

Links

Classifications

    • 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
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • 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
    • 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
    • F16H—GEARING
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • F16H53/025—Single-track cams for single-revolution cycles; Camshafts with such cams characterised by their construction, e.g. assembling or manufacturing features
    • 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
    • F01L2001/0475—Hollow 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49293—Camshaft making

Definitions

  • the invention relates to a method and a camshaft base body for producing a built camshaft and a built camshaft as such, wherein the to be built or built camshaft at least one rotatably and axially displaceably arranged on a camshaft body cam member and at least one rotationally fixed and axially non-displaceable on the Has camshaft main body disposed cam member.
  • valve drive In order to operate internal combustion engines in an optimal operating range, the valve drive is regularly ate. For example, the change in the
  • Such a switchable cam or such a switchable cam element also known as
  • the axially displaceable cam member comprises a tubular sleeve which is rotatably and axially displaceably mounted on a camshaft. The axial displacement of the cam member engages a corresponding cam follower with the various
  • Cam curves In the case of such a camshaft, not all cams or cam elements (or functional elements) regularly have to be arranged axially displaceably on the same. If a multi-tooth profile is introduced on the common camshaft, the fixed and the movable functional elements on the camshaft over the
  • a camshaft for controlling valves in internal combustion engines in which a cam element with a funnel-shaped outwardly widened hub on a rolled and thus expanded in its outer diameter portion of a camshaft main body is frictionally applied.
  • WO 2004/079163 AI A development of this connection is described in WO 2004/079163 AI.
  • the hub of the cam member has a plurality of inwardly directed extensions over which the rolled on the Area of the camshaft base body applied cam in addition to the frictional connection in the field of rolling ensures a positive connection in the direction of rotation.
  • DE 10 2004 002 301 AI a method for producing a built camshaft is described by which also a built camshaft with axially displaceable cam pieces is created.
  • the displaceable cam elements are constructed similarly here and arranged on the camshaft main body, as has already been described above with reference to EP 1 503 048 A1.
  • the object of the invention is to provide a built-up camshaft and a method and a basic camshaft body for producing a built-up camshaft, wherein the built or the camshaft to be built both axially displaceable and rotatably on a camshaft main body arranged cam elements (also referred to as “switchable cam elements” ) as well as axially non-displaceable and rotationally fixed on a camshaft main body arranged cam elements (hereinafter also referred to as "fixed cam elements”). It should during the production of a built camshaft as possible to unnecessary heat input into the components and unnecessary
  • a rod-shaped camshaft main body (which is designed in particular as a hollow shaft body) is provided.
  • the camshaft main body at one end Camshaft tail on which either as an integral part of
  • Camshaft main body is formed or which is connected as a separate component in a separate later process step with the camshaft main body.
  • the camshaft base body is machined in its surface in such a way that it has a rotationally fixed and axially displaceable arrangement in at least a first axial section of its surface, for example by the partial introduction of a splined profile (in particular by milling individual tooth grooves in the camshaft main body surface) allowed by cam elements.
  • the camshaft base body is machined in its surface in such a way that it has a surface area in at least one second axial section, in which it faces both the first axial section (at least opposite the minimum diameter of the spline profile of the first section) and free (ie, having no surface profile formed for an array of cam elements) the body portion portions are widened in diameter such that in the expanded area, cam members are non-rotatably and non-slidably mounted on the body
  • Camshaft body can be arranged (which possibly previously from a defined Auffädel- or Aufschieberaum, with their profile teeth in the profile toothing of
  • Camshaft body engaging over one or more multi-toothed region (s) of a first axial portion of the camshaft main body on the same
  • a camshaft base body is expanded at a predetermined axial mounting position, so that a cam member having in its axial recess (hub) radially inwardly directed projections (advantageously through mechanical evacuation of the recess made),
  • the maximum shaft diameter is dimensioned larger within the at least one second axial section than the minimum (partially reduced by the radially inwardly directed tooth projections) inner diameter of a
  • Camshaft base body in which the cam elements exclusively on one direction (predetermined Traumfädeloplasty) are drawn onto the camshaft main body (can) and in which the cam elements with respect to their hub (or their
  • Hub cross-section i.W. equal (possibly identical) are executed, they can be mounted easily. On the other hand, it is achieved that the fixed or firmly mounted cam elements can be pushed away over a multi-tooth section located upstream in the threading direction, in order to be positively frictionally connected to the camshaft main body in an axially downstream area with an enlarged diameter.
  • cam elements which are to be arranged as axially non-displaceable elements on the camshaft base body, with regard to their
  • Hub cross section compared to the axially displaceable on the camshaft body to be stored cam elements, with significantly more game (increased dimensional tolerance in
  • Cam elements when sliding over a multi-toothed area damage these in its surface.
  • Cam body body body are pushed.
  • the fixed cam elements with respect to their hub cross-section compared to the switchable cam elements (possibly significantly) have less tread teeth, so that due to the increased dimensional play and / or the reduced number of teeth cheaper production and simplified assembly (simplified sliding over the (Vieltechnik-) profile of a / the first axial portion) of the form-fitting to be fastened cam elements is achieved.
  • the first and second axial sections - as viewed in the threading direction of the cam elements - spaced from each other by a defined amount (end first section at the beginning of the second section) greater than the thickness of a non-rotatably and non-displaceably arranged cam member is.
  • Camshaft main body a second axial Operaabites.lie with radial expansion of the shaft diameter diameter is disposed upstream of a first axial portion, which is
  • camshaft base body proposed according to the invention for producing a built-up camshaft, in which in turn individual cam elements are pushed onto the camshaft main body in a predetermined threading direction, as well as the assembled camshaft itself, are in accordance with the invention
  • a first and a second subsection are preferably axially spaced from one another at a distance which is greater than the thickness of a cam element to be arranged in a force-locking manner on the camshaft main body in a second subsection.
  • Fig. Lf, lg a built-up camshaft according to the invention for a four-cylinder
  • Fig. 2 shows a detail of a section along the section line A-A in Fig. Id by the camshaft main body with a in the first section (with Vieiyakprofiltechnik) deferred cam member.
  • FIGS. 1a-le show various stages of a first embodiment of the method according to the invention for producing a built-up camshaft 1 for a four-cylinder internal combustion engine.
  • a basic camshaft body 2 with a diameter d in the sections which, with regard to a functional element attachment, is no
  • Camshaft end 6 in the manufacture of the camshaft main body 2 integrally formed on this or alternatively in one of the manufacturing or processing steps at a predetermined time as a separate camshaft end piece 6 on the
  • Camshaft base 2 by a welding, soldering, shrinking, pressing, screwing or adhesive connection or the like are attached.
  • the camshaft end piece 6 is analogous to the manner of attachment of the force-locking on the camshaft main body 2 to be fastened cam elements 4; 40 (fixed
  • Cam elements 40 connected to the camshaft main body 2.
  • the camshaft main body 2 is machined such that within at least a first axial portion 2a, the body surface a, at least in circumferential
  • Partial areas, of the circular cross-sectional shape deviating cross-sectional shape or surface-side fastening contour has. According to Figure 2 is as such
  • Fixing contour for example, introduced a multi-tooth profile in the main body surface (for example, by milling machining of the body surface).
  • the multi-tooth profile shown by way of example is advantageous by machining the surface
  • a total of two first, mutually spaced, axial sections 2a are made in the central region of the camshaft main body 2.
  • a second method step-which may also be carried out together with the first method step described above-between the camshaft end piece 6 and the first axial section 2a-via a second axial section 2b-the camshaft base body 2 is machined such that inside of the second axial section 2b, a widening of the camshaft main body 2 to an enlarged maximum diameter d maX 2 takes place.
  • This maximum diameter d max2 of the second axial section d m3x2 is dimensioned larger than the minimum diameter d min of the first axial section 2a.
  • the or each first section 2a is made such that it has a multi-tooth profile extending in the axial direction, while the second axial section 2b undergoes its widening, in particular by a rolling of the main body 2a.
  • a (axial) cam element 4 to be positively frictionally secured in a second axial section 2b located downstream in the threading direction; 40 (with interlocking toothing of cam member 4, 40 and body 2) pushed over the first axial portion 2a and force-fit with its teeth on the enlarged diameter second axial
  • cam elements 4 are to be arranged axially displaceable (41) or axially non-displaceable (40) alternately on the camshaft main body 2 (FIGS. 1f, 1g), or for cases in which an axial second subsection 2b (FIG. Rolling) upstream of a first axial portion 2a (multi-tooth profile) seen in Auffädeloplasty R (as shown in Figure lf, in the right outer curl, or in Fig. Ld, in both burnings, is shown), care must be taken that the rolling or
  • the axial distance L should be seen in the direction of pull R between a first Part section 2a and seen in Auffädelraum R downstream curling (Fig lb-ld) be greater than the thickness D of a kraftformschlüssig be mounted on the roller to be fastened cam member 40.
  • Fig. 2 shows a detail of a section along the section line AA in Fig. Id.
  • the camshaft base body 2 in the region of its first axial section 2a has a multi-tooth profile, which seen in cross section has a double trapezoidal shape (both teeth and interdental spaces are trapezoidal).
  • the cam elements 4; 40, 41 and the hubs 4a of the camshaft elements 4; 40, 41 are adapted to the contour of the camshaft main body 2 in the first axial section 2a so that they are axially displaceable while maintaining a small clearance and simultaneously rotatably mounted.
  • the inwardly directed tread teeth of the hub 4a are advantageously triangular in cross-section or designed with an inwardly directed tip.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

La présente invention concerne un arbre à cames assemblé ainsi qu'un procédé et un corps de base d'arbre à cames (2) pour fabriquer un arbre à came assemblé. L'arbre à cames assemblé ou à assembler porte au moins un élément de came (4 ; 41) à disposer de façon solidaire en rotation et pouvant coulisser axialement sur un corps de base d'arbre à cames (2) et au moins un élément de came (4 ; 40) à disposer de façon solidaire en rotation et de façon non coulissante axialement sur le corps de base d'arbre à cames (2). Le corps de base d'arbre à cames (2) présente selon l'invention des premiers tronçons axiaux (2a) avec un profil polygonal, de sorte qu'un logement solidaire en rotation de l'élément de came (4 ; 41) à disposer dans ce tronçon (2a) de façon coulissante axialement est garanti au moyen d'une liaison arbre-moyeu par complémentarité de formes à ajustement serré. Le corps de base d'arbre à cames (2) présente également des seconds tronçons axiaux (2b) avec un diamètre élargi (dmax2), de sorte qu'un logement solidaire en rotation et en déplacement de l'élément de came (4 ; 40) à disposer dans ce tronçon (2b) est garanti au moyen d'une liaison arbre-moyeu par complémentarité de formes à ajustement serré.
PCT/EP2010/006884 2009-12-09 2010-11-11 Arbre à cames assemblé, corps de base d'arbre à cames et procédé pour fabriquer un arbre à cames assemblé WO2011069591A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/514,657 US8844130B2 (en) 2009-12-09 2010-11-11 Assembled camshaft, main camshaft body and method for producing an assembled camshaft
BR112012013814A BR112012013814B1 (pt) 2009-12-09 2010-11-11 processo para produção de um eixo de cames, corpo básico de eixo de cames e eixo de cames
CN201080055604.6A CN102883854B (zh) 2009-12-09 2010-11-11 组合式凸轮轴、主凸轮轴体和生产组合式凸轮轴的方法
JP2012542382A JP5980120B2 (ja) 2009-12-09 2010-11-11 組立式のカム軸、カム軸基体及び組立式のカム軸を製造する方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009057633A DE102009057633B3 (de) 2009-12-09 2009-12-09 Verfahren zur Herstellung einer gebauten Nockenwelle, Nockenwellengrundkörper und gebaute Nockenwelle
DE102009057633.9 2009-12-09

Publications (1)

Publication Number Publication Date
WO2011069591A1 true WO2011069591A1 (fr) 2011-06-16

Family

ID=43569461

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/006884 WO2011069591A1 (fr) 2009-12-09 2010-11-11 Arbre à cames assemblé, corps de base d'arbre à cames et procédé pour fabriquer un arbre à cames assemblé

Country Status (6)

Country Link
US (1) US8844130B2 (fr)
JP (1) JP5980120B2 (fr)
CN (1) CN102883854B (fr)
BR (1) BR112012013814B1 (fr)
DE (1) DE102009057633B3 (fr)
WO (1) WO2011069591A1 (fr)

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DE102012109689A1 (de) * 2012-10-11 2014-04-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Ventiltriebanordnung zur Betätigung von Gaswechselventilen einer Brennkraftmaschine
WO2016165895A1 (fr) * 2015-04-17 2016-10-20 Thyssenkrupp Presta Teccenter Ag Procédé servant à positionner un élément d'arbre à cames sur un segment d'arbre d'un arbre à cames
EP3142827B1 (fr) 2014-05-16 2019-09-04 ThyssenKrupp Presta TecCenter AG Procédé de fabrication d'un arbre à cames assemblé

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DE102011110871B4 (de) * 2011-08-17 2018-12-06 Neumayer Tekfor Engineering Gmbh Gebaute Nockenwelle
DE102012209310A1 (de) * 2012-06-01 2013-12-05 Schaeffler Technologies AG & Co. KG Grundwelle für einen Schiebenockenventiltrieb
DE102012105230A1 (de) 2012-06-15 2013-12-19 Thyssenkrupp Presta Teccenter Ag Verfahren zur materialabtragenden Bearbeitung einer verstellbaren Nockenwelle sowie Anordnung zur Durchführung des Verfahrens
JP2015068253A (ja) * 2013-09-30 2015-04-13 スズキ株式会社 ４サイクル内燃機関
DE102014106614A1 (de) 2014-05-12 2015-11-12 Thyssenkrupp Presta Teccenter Ag Rotorwelle mit Blechpaket
DE102014220858A1 (de) 2014-10-15 2016-04-21 Mahle International Gmbh Verfahren zur Herstellung einer gebauten Nockenwelle
DE102014116207A1 (de) 2014-11-06 2016-05-12 Thyssenkrupp Presta Teccenter Ag Verfahren zur Montage eines Nockenwellenmoduls
DE102014116195A1 (de) * 2014-11-06 2016-05-12 Thyssenkrupp Presta Teccenter Ag Nockenwelle mit wenigstens einem axial fixierten Schiebeelement
CN104551530B (zh) 2014-12-23 2017-10-27 绵阳华晨瑞安汽车零部件有限公司 组合凸轮轴组装方法和设备
DE102015203712A1 (de) * 2015-03-03 2016-09-08 Schaeffler Technologies AG & Co. KG Nockenwelle für einen Ventiltrieb einer Brennkraftmaschine, sowie Verfahren zur Herstellung einer Nockenwelle
WO2017079383A1 (fr) 2015-11-06 2017-05-11 Borgwarner Inc. Système d'actionnement de soupape offrant une levée de soupape variable et/ou un réglage de soupape variable
DE102017214793A1 (de) 2017-08-24 2019-02-28 Bayerische Motoren Werke Aktiengesellschaft Ventiltrieb für eine Brennkraftmaschine
DE102017214900A1 (de) * 2017-08-25 2019-02-28 Thyssenkrupp Ag Verfahren zur Herstellung einer verstellbaren Nockenwelle
DE102017222607A1 (de) * 2017-12-13 2019-06-13 Thyssenkrupp Ag Gebaute Nockenwelle, sowie Verfahren zur Herstellung einer gebauten Nockenwelle
DE102017222605A1 (de) * 2017-12-13 2019-06-13 Thyssenkrupp Ag Gebaute Nockenwelle, sowie Verfahren zur Herstellung einer gebauten Nockenwelle
DE102018213310A1 (de) * 2018-08-08 2020-02-13 Volkswagen Aktiengesellschaft Zahnwellen-System mit Passverzahnung
DE102018121303A1 (de) * 2018-08-31 2020-03-05 Thyssenkrupp Ag Verfahren zum Herstellen einer Zahnnockenwelle, Verfahren zum Herstellen einer Nockenwelle oder einer Welle und Verwendung einer Nadelvorrichtung
CN111482763B (zh) * 2020-04-15 2022-08-05 哈尔滨工业大学（威海） 一种组合式空心凸轮轴的轴压镦形制造工艺方法

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JP5980120B2 (ja) 2016-08-31
US8844130B2 (en) 2014-09-30
BR112012013814B1 (pt) 2020-04-14
CN102883854A (zh) 2013-01-16
US20120279467A1 (en) 2012-11-08
DE102009057633B3 (de) 2011-03-31
BR112012013814A2 (pt) 2018-05-29
JP2013513747A (ja) 2013-04-22

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