WO2019007859A1 - Composant, arbre creux et procédé pour fabriquer un arbre creux - Google Patents

Composant, arbre creux et procédé pour fabriquer un arbre creux Download PDF

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Publication number
WO2019007859A1
WO2019007859A1 PCT/EP2018/067699 EP2018067699W WO2019007859A1 WO 2019007859 A1 WO2019007859 A1 WO 2019007859A1 EP 2018067699 W EP2018067699 W EP 2018067699W WO 2019007859 A1 WO2019007859 A1 WO 2019007859A1
Authority
WO
WIPO (PCT)
Prior art keywords
hollow shaft
connecting element
component
dad
net
Prior art date
Application number
PCT/EP2018/067699
Other languages
German (de)
English (en)
Inventor
Ulf MÜLLER
Robert Reichelt
Original Assignee
Thyssenkrupp Presta Teccenter Ag
Thyssenkrupp 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, Thyssenkrupp Ag filed Critical Thyssenkrupp Presta Teccenter Ag
Publication of WO2019007859A1 publication Critical patent/WO2019007859A1/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
    • 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
    • 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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0422—Separating oil and gas with a centrifuge device

Definitions

  • the invention relates to a component for a hollow shaft, a hollow shaft and a method for producing a hollow shaft.
  • Such components are known, for example, in the form of oil separators, which are installed in a cam hollow shaft in order to purify the blow-by gases produced in an internal combustion engine.
  • the blowby gases are sucked into the cam hollow shaft, passed through the oil separator, cleaned and then discharged.
  • camshaft i. the axial and radial interference fit of the oil separator in the cam hollow shaft, must for a
  • the components must ensure on the one hand for these limit temperatures and on the other hand for all possible component pairings both the required tightness and compliance with the permissible material stresses.
  • the production-related intake can be up to 0.2 mm.
  • DE 10 2012 017 040 AI Although it is known from DE 10 2012 017 040 AI to produce sintered composite components comprising a shaft and cam. As a result, the collection is avoided. The process is very complex.
  • DE 10 2011 079 609 A1 describes a camshaft adjuster with a drive element, a Output element and a cover element, which are connected to each other positively or positively.
  • the invention is based on the object to provide a component for a hollow shaft, which can be securely and firmly connected to the hollow shaft as independent as possible of the respective material pairing.
  • the invention is further based on the object to provide a hollow shaft and a method for producing a hollow shaft.
  • the object is achieved by a component for mounting on or installing in a hollow shaft, wherein the component comprises a base member and a connecting element which is positively connected to the base member or positively connect.
  • the connecting element is adapted for frictional connection with an inner wall of the hollow shaft.
  • the base element can be made of a material that is tailored to the respective function of the basic element.
  • the connecting element may be made of a different material, which is optimized with regard to the connection function. This results in a separation of functions, which allows an improvement in the connection between the component on the one hand and the camshaft or the hollow shaft on the other.
  • Connecting element allows a largely material-independent
  • the base element made of plastic and the connecting element made of metal his.
  • the basic element and the connecting element can be made of different materials.
  • the connecting element can be used for the non-positive connection with the connecting element
  • Hollow shaft optimally adapted.
  • the optimization may relate to the choice of material and / or the shape of the connecting element.
  • the invention leads to a cost reduction due to the elimination of positive locking geometries of the hollow shaft, in particular cam hollow shaft.
  • the invention enables a permanently secure fixation of the component at
  • Connecting element, in the hollow shaft is also possible if the component is to be placed over axial areas of the hollow shaft away, where the
  • Inner diameter of the hollow shaft is retracted radially inward, eg. In a built cam hollow shaft.
  • the invention is particularly suitable for connecting a base element, which may be a separator, in particular an oil separator, through the connecting element to a hollow shaft, in particular a cam hollow shaft.
  • a base element which may be a separator, in particular an oil separator
  • Basic element can be made of plastic.
  • the connecting element connects the base element with the camshaft in the assembled state non-positively.
  • the basic element and the connecting element are positively connected.
  • the basic element is generally responsible for the functionality of the component.
  • the basic element is set up for the separating function.
  • the invention is not limited to a basic element as a separator.
  • Basic elements of other types of functions can also be used.
  • a component for installation is understood to mean a component in which the basic element is introduced into the hollow shaft. This may be the case, for example, with a baffle separator.
  • a component for mounting is understood to mean a component which, in the assembled state, is at least partially disposed on the end face of the hollow shaft, for example in a centrifugal separator.
  • the basic element that is responsible for the functionality of the component at least arranged on the end face.
  • the connecting element is arranged in the hollow shaft and connects the base element frictionally with an inner wall of the hollow shaft. The basic element and the connecting element are positively connected.
  • Connecting element and the base element for example, before the final assembly as a separate, components to be joined are present.
  • the connecting element and the base element are therefore positively connected.
  • the connecting element and the base element form an independently manageable assembly, which is connected in a further assembly step with a hollow shaft.
  • the component may include a liquid separator.
  • a liquid separator This may be, for example, an oil separator.
  • the connecting element may have at least one holding means, which in a state connected to the base element over the outer circumference of the
  • Base element protrudes radially. This ensures that the holding means of the connecting element can produce the non-positive connection with the hollow shaft when the connecting element is inserted together with the base element or a part thereof in the hollow shaft.
  • the basic element and the hollow shaft are therefore not in direct contact at least in
  • the holding means in the radial direction with respect to the
  • Basic element elastically deformable This has the advantage that in the mounted state, that is, when the connecting element is arranged in the hollow shaft, exerted by the elastic deformation of the connecting element, a holding force on the inner wall of the hollow shaft and so the non-positive connection is established.
  • the holding means is positively connected or connectable to the base element.
  • the holding means has thus in connection with the embodiment described above
  • the holding means provides the connection to
  • the holding means may comprise, for example, a bending tab.
  • the bending tab is adapted to make the positive connection with the base element. Due to the elastic deformability of the bending tab is the adhesion with the
  • the connecting element may form a sheet-metal shaped part whose outer circumference corresponds in sections to the outer circumference of the basic element. This has the advantage that the connecting element in the axial direction of the hollow shaft or the basic element is flat. Moreover, the connecting element may be, for example, by punching or the like
  • the connecting element can be brought into the form required for the assembly with the basic element, for example by bending the connecting element
  • a disk-shaped connecting element allows a space and
  • the tubular design of the base element allows a maximum size in relation to the inner diameter of the hollow shaft and an associated optimal utilization of the
  • Hohlwelleninnraumes as a functional space.
  • the connecting element is preferably provided with an axial end of the
  • Connecting element ensures that this is arranged sufficiently far inside the hollow shaft, so that a secure connection with the hollow shaft is possible.
  • the base element has at least one means for removing a liquid.
  • a hollow shaft is claimed with a component according to the invention, wherein the connecting element is positively connected on the one hand with the base element and on the other hand with the inner wall of the hollow shaft. Due to the different types of connections on the one hand to the base element and on the other hand to the hollow shaft optimum component safety is achieved regardless of the respective material pairing element / hollow shaft.
  • the hollow shaft comprises a camshaft.
  • the invention is not limited to cam hollow shafts, but can generally be used to connect components with hollow shafts in which materials with
  • the connecting element and the hollow shaft are made of the same materials. This is not mandatory. It is also possible to combine different materials with similar thermal expansion coefficients. If the elastic deformability of the connecting element is in the foreground, the choice of material can even be independent of the thermal component properties.
  • a component which is designed according to the invention is introduced into the hollow shaft. Before introducing the base element and the connecting element are positively connected. When introducing the basic element and the connecting element are positively connected.
  • Fig. 1 is a plan view (right view) and a side view (left
  • Fig. 2 is a perspective view of a component according to a
  • Example embodiment according to the invention for example, comprising a connecting element according to FIG. 1 and a base element before joining;
  • FIG. 3 shows a perspective view of the component according to FIG. 2 after joining
  • FIG. 4 shows a view of the component according to FIG. 3 from below;
  • FIG. 5 shows a longitudinal section of the component according to FIG. 3;
  • FIG. 6 shows the detail Z according to FIG. 5;
  • FIG. 5 shows a view of the component according to FIG. 3 from below;
  • FIG. 5 shows a longitudinal section of the component according to FIG. 3;
  • FIG. 6 shows the detail Z according to FIG. 5;
  • FIG. 5 shows a longitudinal section of the component according to FIG. 3;
  • FIG. 6 shows the detail Z according to FIG. 5;
  • FIG. 7 shows a longitudinal section through a hollow shaft, in particular a
  • Fig. 8 is a longitudinal section through the hollow shaft, in particular the
  • FIGS. 1 to 8 show a component 10 according to the invention
  • Impact separator is executed.
  • Other components to be mounted in or on a hollow shaft 11, in particular a cam hollow shaft, are possible.
  • the connecting element 13 which is shown in FIG. Together with the base element 12, which is responsible for the function (here: separation function), the connecting element 13 forms a component, as shown in FIG. 2 (not mounted) and FIG. 3 (mounted).
  • the connecting element 13 is produced as a stamped and bent part and forms a sheet-metal shaped part, in particular a flat or disk-shaped sheet metal shaped part.
  • the connecting element 13 has a base plate 18 whose outline in
  • the base plate has openings 23.
  • the connecting element 13 has a plurality of holding means 15. Specifically, three holding means 15 are provided. Another number of holding means 15 is possible.
  • the holding means 15 are arranged distributed on the outer circumference of the base plate 18.
  • the holding means 15 each have an opening 19, in the assembled state with the base member 12, the positive connection is to be established.
  • the holding means 15 are each formed as bending tabs that are easily manufactured by a stamping process. As in Fig. 1, left
  • the bending tabs or generally the holding means are brought into a pre-assembly, so that after joining with the
  • the bending tab or generally the holding means 15 of the connecting element 13 are arranged, in particular only so far bent, that the maximum outer diameter D a of the connecting element 13 formed thereby is greater than the inner diameter D, the bore of the hollow shaft 11.
  • the outer diameter D a may be larger than the inner diameter Di by about 0.5 mm to 2 mm.
  • Inner wall 14 of the hollow shaft 11 is generated.
  • the elastic deformation of the holding means 15 and the bending tab is shown in Fig. 1, left representation on the one hand by the bending angle ⁇ and on the other hand by the Vorspannweg s by which the holding means 15 is moved during joining. With permanent design of the Vorspannweges s the bias is maintained. It is a deformation in the elastic range. Thereby, the interference fit of the component 10 comprising the base member 12 and the
  • Connecting element 13 is achieved in the hollow shaft 11 over its lifetime.
  • the basic element 12 can be clearly seen in FIG. 2 and in section in FIG. 5.
  • the base element 12 is a plastic component. Other materials are possible. The choice of material depends on the functionality of the base element 12. In the example according to FIG. 2, which is a baffle separator, the plastic is selected correspondingly with a view to the separator function.
  • the base member 12 is formed substantially tubular or hollow cylindrical.
  • the outer geometry of the base member 12 is adapted so that this can be inserted into the hollow shaft 11.
  • At least one means 16, advantageously a plurality of means 16, for removing a liquid is formed on the inside of the base element 12.
  • this is a helical inner profile which conducts separated oil through the base element 12 in the direction of an outlet 24 of the hollow shaft 11.
  • the outlet 24 can be formed, for example, by an open, axial end of the hollow shaft 11. Other types of separators are possible.
  • Form-fitting elements 20 formed whose position with the position of
  • Holding means 15 matches. As can be seen in Fig. 3 are the
  • Form-fitting elements 20 star-shaped, in particular uniformly star-shaped, arranged in the circumferential direction of the base member 12.
  • the form-fitting elements 20 engage in the assembled state in the respective holding elements 15 and
  • the form-fitting elements 20 form a projection which engages in the opening 19 of the holding means 15.
  • the form-fitting elements 20 are each rectangular in cross-section. They have at the holding means 15 side facing a flattening. On the back of the form-fitting elements 20 is in each case a groove-shaped
  • the holding means 15 can, as shown in Fig. 6, that
  • Positive locking element 20 engage behind, so that a fixing of the base member 12 takes place both in the axial direction of the base member 12 and in the circumferential direction of the base member 12.
  • Other geometries of the form-locking element 20 are possible.
  • the base element 12 has on the outer circumference a plurality of radially projecting beyond the outer wall of the base member 12 centering means 17.
  • the centering means 17 are arranged distributed on the circumference and in the longitudinal direction of the base member 12.
  • the centering means 17 serve to prevent tilting of the base member 12 during insertion into the hollow shaft 11. This ensures that all edges 21 of the holding means 15 and the bending tab are uniformly deformed by the contact of the inner wall 14 of the hollow shaft 11.
  • the assembly of the component 10 in the hollow shaft 11 takes place in 2 steps. In the first step, as shown in Figures 2 and 3, the base member 12 and the connecting element 13 are joined.
  • the connecting element 13 is placed on the end face of the base element 12, that is, on the axial rear end face in the flow direction of the blow-by gas.
  • the pre-bent retaining means 15 are bent further in the radial direction inwards, so that they
  • the component 10 is produced from the base element 12 and the connecting element 13, which are connected in a form-fitting manner.
  • the component 10 is connected to the hollow shaft 11 (FIGS. 7, 8). As shown in Fig. 7, the component 10 is aligned coaxially with the hollow shaft 11 and pressed according to the drawn in Fig. 7 joining direction in the hollow shaft 11 to.
  • the final state is shown in FIG. In this state, the holding means 15 form a frictional connection with the inner wall 14 of the hollow shaft 11. At the same time the positive connection between the connecting element 13 and the base member 12 is secured by the contact with the inner wall 14.
  • the thickness of the sheet metal part can also be varied.
  • Connecting element 13 can be varied.
  • Holding means 15 in the relaxed state may vary. The same applies to the degree of coverage, i. the position in the holding means 15 in the relaxed state based on the inner diameter of the hollow shaft eleventh
  • the sheet metal part is conceivable as an insert in injection mold.
  • the connecting element 13 may be designed as a plastic part, in which a positive connection with the base member 12 on the one hand and a frictional connection with the hollow shaft 11 on the other hand is possible.

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

Abstract

L'invention concerne un composant (10) destiné à être monté sur un arbre creux (11) ou dans ce dernier, lequel composant comprend un élément de base (12) et un élément de liaison (13) qui est relié ou peut être relié à l'élément de base (12) par complémentarité de forme, l'élément de liaison (13) étant conçu pour être relié à force avec une paroi intérieure (14) de l'arbre creux (11). L'invention concerne en outre un arbre creux (11) et un procédé de fabrication d'un arbre creux (11).
PCT/EP2018/067699 2017-07-04 2018-06-29 Composant, arbre creux et procédé pour fabriquer un arbre creux WO2019007859A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017114907.4 2017-07-04
DE102017114907.4A DE102017114907A1 (de) 2017-07-04 2017-07-04 Bauteil, Hohlwelle und Verfahren zur Herstellung einer Hohlwelle

Publications (1)

Publication Number Publication Date
WO2019007859A1 true WO2019007859A1 (fr) 2019-01-10

Family

ID=62816548

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/067699 WO2019007859A1 (fr) 2017-07-04 2018-06-29 Composant, arbre creux et procédé pour fabriquer un arbre creux

Country Status (2)

Country Link
DE (1) DE102017114907A1 (fr)
WO (1) WO2019007859A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06272519A (ja) * 1993-03-22 1994-09-27 Nippon Seiko Kk エンジン用カム軸
JPH07158412A (ja) * 1993-12-08 1995-06-20 Matsumoto Jukogyo Kk カムシャフトおよびその製造方法
US20110312427A1 (en) * 2009-03-10 2011-12-22 Thyssenkrupp Presta Teccenter Ag Shaft body comprising an integrated oil separator unit
DE102011079609A1 (de) 2011-07-22 2013-01-24 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
DE102012017040A1 (de) 2012-08-29 2014-03-27 Gkn Sinter Metals Holding Gmbh Verfahren zur Herstellung eines Verbundbauteils sowie ein Verbundbauteil
DE102014213937A1 (de) * 2014-07-17 2016-01-21 Mahle International Gmbh Nockenwelle
US20160138446A1 (en) * 2013-06-18 2016-05-19 Thyssenkrupp Presta Teccenter Ag Oil separator for crankcase ventilation of an internal combustion engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009012400A1 (de) * 2009-03-10 2010-09-23 Thyssenkrupp Presta Teccenter Ag Hohlkörper mit integrierter Ölabscheideeinrichtung
DE102010033955A1 (de) * 2010-08-10 2012-02-16 Thyssenkrupp Presta Teccenter Ag Hohlkörper mit integrierter Ölabscheideeinrichtung
DE102013009895A1 (de) * 2013-06-13 2014-12-18 Daimler Ag Brennkraftmaschine für ein Kraftfahrzeug

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06272519A (ja) * 1993-03-22 1994-09-27 Nippon Seiko Kk エンジン用カム軸
JPH07158412A (ja) * 1993-12-08 1995-06-20 Matsumoto Jukogyo Kk カムシャフトおよびその製造方法
US20110312427A1 (en) * 2009-03-10 2011-12-22 Thyssenkrupp Presta Teccenter Ag Shaft body comprising an integrated oil separator unit
DE102011079609A1 (de) 2011-07-22 2013-01-24 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
DE102012017040A1 (de) 2012-08-29 2014-03-27 Gkn Sinter Metals Holding Gmbh Verfahren zur Herstellung eines Verbundbauteils sowie ein Verbundbauteil
US20160138446A1 (en) * 2013-06-18 2016-05-19 Thyssenkrupp Presta Teccenter Ag Oil separator for crankcase ventilation of an internal combustion engine
DE102014213937A1 (de) * 2014-07-17 2016-01-21 Mahle International Gmbh Nockenwelle

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Publication number Publication date
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