EP1623140A1 - Arbre d'equilibrage pour un moteur a combustion interne et procede de production dudit arbre - Google Patents

Arbre d'equilibrage pour un moteur a combustion interne et procede de production dudit arbre

Info

Publication number
EP1623140A1
EP1623140A1 EP04730235A EP04730235A EP1623140A1 EP 1623140 A1 EP1623140 A1 EP 1623140A1 EP 04730235 A EP04730235 A EP 04730235A EP 04730235 A EP04730235 A EP 04730235A EP 1623140 A1 EP1623140 A1 EP 1623140A1
Authority
EP
European Patent Office
Prior art keywords
hollow body
balance weight
functional elements
balance
balancing
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.)
Withdrawn
Application number
EP04730235A
Other languages
German (de)
English (en)
Inventor
Torsten Harms
Frank Rohwer
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1623140A1 publication Critical patent/EP1623140A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/22—Compensation of inertia forces
    • F16F15/26—Compensation of inertia forces of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system, i.e. masses connected through a kinematic mechanism or gear system
    • F16F15/264—Rotating balancer shafts
    • F16F15/268—Hollow shafts
    • 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
    • F16D1/064—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 non-disconnectable
    • F16D1/072—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 non-disconnectable involving plastic deformation
    • 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
    • F16D1/0852—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 clamping between the mating surfaces of the hub and shaft
    • F16D1/0858—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 clamping between the mating surfaces of the hub and shaft due to the elasticity of the hub (including shrink fits)
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2226/00—Manufacturing; Treatments
    • F16F2226/04—Assembly or fixing methods; methods to form or fashion parts
    • 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
    • Y10T29/49231—I.C. [internal combustion] engine making

Definitions

  • the invention relates to a balance shaft for an internal combustion engine according to the preamble of claim 1 and a method for producing the same according to the preamble of claim 8.
  • a generic balance shaft or a generic method for their preparation is known from DE 198 32 987 AI.
  • the balance shaft described therein is tubular and has in its interior a balance weight which extends over almost its entire length.
  • the tube part is provided on the circumference with two recesses, each having a centrally located hole. Each hole is penetrated by a pin that equally protrudes through the balance weight. The pin is used to attach the balance weight on the pipe part.
  • the tube part is closed at both ends by a cover by means of pressing or soldering.
  • the attachment is very cumbersome because the pin must be countered either from the inside of the balance shaft or, if the pin is already located in the balance weight, the balance weight cumbersome to be pushed back and forth until the pin through the hole threaded in the pipe part wall and then countered from the outside can be.
  • the practical requirements for a balance shaft are rarely as they can be seen from the known document. In most cases, the local arrangement of the balance weight is desired. In order to fulfill its function, the balance weight must have a certain size. However, the bigger this has to be, the more volume will be required by the balance weight.
  • the invention has the object of developing a generic balance shaft to the effect that a space-saving design of the shaft is made possible, which has a sufficient balance weight as needed at the desired location of the balance shaft.
  • the balance weight is arranged and fastened on the outer circumference of the hollow body, the hollow body forming the base part of the balance shaft can be machined. Its diameter is relatively small and the wall thickness very low (about 2mm) are designed, resulting in a significant reduction in weight of the entire shaft.
  • the inner length of the hollow body is not increased by the local placement of the balance weight on the outer circumference, so that overall the space required for the hollow body is particularly low and only space instead of the placement of the balance weight must be provided in the engine sufficient space.
  • the balance weight is readily accessible and placeable in a simple manner at the right place of the hollow body, wherein the axial position is also freely selectable for the functional elements, and can be fixed by any suitable means on the hollow body without much effort.
  • the balance weight is formed on a hub which surrounds the hollow body locally and is secured thereto.
  • the hub Through the hub, only a small space is claimed while it offers a larger connection surface for attachment to the hollow body for the balance weight by the enclosure of the hollow body, so that an overall improved grip of the balance weight is achieved on the hollow body.
  • the balancing weight is connected in an interference fit with the hollow body.
  • the interference fit a secure attachment of the balance weight is achieved with relatively simple means, without additional fasteners.
  • thermal shrinking or magnetic forming as well as the pressing-on of the balance weight with an inner diameter of the hub having an undersize relative to the outer diameter of the hollow body are conceivable.
  • the functional elements are arranged according to claim 4 with respect to the balance shaft and the claim 11 with respect to the corresponding method as individual components on the hollow body and connected to this in a press fit.
  • the balance weight and / or the functional elements are additionally positively connected to the hollow body. This leads to a further improved hold of the balance weight and the functional elements on the hollow body against mechanical loads in the axial or radial direction.
  • the hollow body at the point of its connection with the balance weight is widened plastically, wherein the balance weight is widened elastic spring-back at this point.
  • a further preferred embodiment of the balance shaft according to the invention shows claim 7.
  • the hollow body is integrally connected at one end with a connection component for drive components, such as sprockets or centrifuges, wherein the connection component closes the hollow body. Due to the integral nature of the connection results in a high strength for the entire component of the balance shaft at the junction.
  • the balance shaft is closed at one end by this connection, after which it only needs to be closed after at the opposite end. This is done, for example, with a lid, which prevents total, that enters the interior of the hollow body moisture, which can lead to corrosion of the balancer shaft.
  • the integral nature of the connection and the massiveness of the connection component, the balance shaft on a high stability against the engagement of the drive components.
  • the balance weight is pushed by means of a hub on which it is formed on the hollow body and then attached thereto.
  • a further, particularly preferred embodiment of the method according to the invention represents claim 12.
  • a fluidic internal high pressure to achieve the interference fit
  • the positioning of the balance weight and / or the functional elements is further facilitated as a postponement of the balance weight and / or the functional elements with excess of the hub inner diameter or the bore diameter is particularly smooth.
  • the desired press assembly precisely adjustable, because in its manufacture advantageously by a suitable pressure control, the wall thickness and the material properties of the joining partners can be considered in terms of breaking strength, so that in the production of the balance shaft, the process reliability is absolutely guaranteed.
  • the joining process can be done quickly and with relatively little equipment.
  • the wall of the passage opening of the hub and / or the wall of the bore, with the balance weight and / or the functional elements are pushed onto the hollow body, formed non-rotationally symmetrical, by means of fluidic internal high pressure of the hollow body, by at least partially conditioning non-rotationally symmetrical surfaces of the wall of the passage opening of the hub and / or the wall of the bore, is positively connected to the balance weight and / or the functional elements.
  • the inside of the hub or the bore in non-rotationally symmetrical form, for example in oval design or formed by depressions or longitudinal grooves in the production or by subsequent processing, is in interaction with the internal high pressure, which can flow the hollow body material and this the non-rotationally symmetric surfaces of the bore wall or the wall of the hub passage opening, where it remains irreversible, forcibly achieves a positive fit.
  • This positive engagement even further increases the strong hold of the joining partners achieved by the frictional engagement of the pressed composite of hollow body and compensating weight and / or functional elements.
  • At least one of the open ends of the hollow body is friction-welded to a connecting component closing the end for drive components, such as sprockets or centrifuges.
  • FIG. 1 shows a longitudinal section of a balance shaft according to the invention with a connection component
  • FIG. 2 shows a front view of a balance weight for a balancing shaft according to the invention according to FIG. 1,
  • Fig. 3 in a longitudinal section in sections a balance shaft according to the invention with stored on her functional elements.
  • a balancer shaft 1 is shown for an internal combustion engine, wherein the shaft 1 consists of a rohrformigen hollow body 2, which in turn consists of a pipe section of a drawn tube.
  • the hollow body 2 can also be made from a rolled board, which is longitudinally welded at its impact.
  • a balance weight 5 is disposed on the outer periphery 4 of the hollow body 2 and . fixed there.
  • the hollow body 2 carries a functional element in the form of a bearing sleeve 7, which is supported at one end on an end face 8 of the balance weight 5.
  • the balancing weight remote end 9 of the hollow body 2 is integrally connected to a connection member 10.
  • the attachment component 10 which is solid, forms a continuation of the axial extension of the hollow body 2.
  • the attachment component 10, which may be a rotary part, a hot press, a sintered or a cold extrusion part, serves for connection to drive components, such as sprockets or centrifuges ,
  • the bearing sleeve 7 and then the balance weight 5 is pushed to the desired position. While this is accomplished via the bore 11 of the bearing sleeve 7, the balance weight 5 is formed on a hub 12, as also illustrated in Figure 2, so that the balance weight 5 with the through hole 13 of the hub 12 is pushed onto the hollow body 2. Subsequently, the bearing sleeve 7 and the balance weight 5 is connected to the hollow body 2 to form a press fit.
  • the bearing sleeve 7 and the balance weight 5 can be connected to each other separately or simultaneously with each other with the hollow body 2. The generation of the interference fit can be done for example by broaching the hollow body 2.
  • the joining process by means of fluidic internal high pressure which is generated in the interior of the hollow body 2 are performed.
  • the hollow body 2 can be inserted with the deferred bearing sleeve 7 and the deferred balance weight 5 in an internal high pressure forming die, wherein the die outside the joints to be generated has the negative contour of the balance shaft 1.
  • the die is formed such that the joining parts are stored there with a predetermined game.
  • a fluidic internal high pressure is generated in the entire hollow body 2, which plastically diffuses the hollow body 2 only at the joints.
  • Another conceivable possibility of using the hydroforming technique is that two movable punch are retracted respectively in the left and the right end of the hollow body 2 until they occupy a fixed axial distance from each other. By this distance, a gap is limited, which comes to rest in Fügelage below the parts to be joined. Subsequently, pressure fluid is introduced into the intermediate space via one of the punches or both punches and generates a high pressure. By means of this high pressure, the hollow body 2 is widened plastically only at the location of the parts to be joined.
  • Another, particularly advantageous variant of the internal high-pressure technology consists in the insertion of a Aufweitlanze in the hollow body 2, wherein within the expansion lance an axial pressure fluid channel extends from which radial short channels, or it is also the branch of only a single channel conceivable depart and on the outer jacket of the expansion lance.
  • the mouth openings are axially bounded laterally by ring seals and include an expansion space.
  • the joining parts can be added simultaneously or be added in the arrangement of only one expansion space sequentially with the hollow body 2.
  • the latter variant of the internal high-pressure technology requires only small equipment expense and allows a particularly fast production of the balancer shaft 1.
  • the hollow body 2 fitted with the bearing sleeve 7 and the balance weight 5 is friction-welded at its end 9 to the connection component 10, whereby between this and the hollow body a one-piece connection arises.
  • FIG. 3 in which a tubular hollow body 2 is shown, onto which a balance weight 5 with its hub 12 a bearing sleeve 7 and a sprocket 15 are pushed with play and finally joined with internal high pressure.
  • sensor rings on the hollow body 2 can be joined.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

L'invention concerne un arbre d'équilibrage (1) pour un moteur à combustion interne et un procédé de production dudit arbre. Cet arbre d'équilibrage est constitué d'un corps creux tubulaire (2) et contient un contrepoids (5) ainsi que des éléments fonctionnels placés sur le corps creux. L'objectif de cette invention est de produire le plus simplement possible un arbre d'équilibrage peu encombrant, le contrepoids nécessaire étant placé selon les besoins à l'endroit approprié. A cet effet, le contrepoids est placé sur la périphérie extérieure (4) du corps creux et fixé à cet endroit.
EP04730235A 2003-05-09 2004-04-29 Arbre d'equilibrage pour un moteur a combustion interne et procede de production dudit arbre Withdrawn EP1623140A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10320747A DE10320747B4 (de) 2003-05-09 2003-05-09 Ausgleichswelle für eine Brennkraftmaschine und ein Verfahren zur Herstellung derselben
PCT/EP2004/004541 WO2004099648A1 (fr) 2003-05-09 2004-04-29 Arbre d'equilibrage pour un moteur a combustion interne et procede de production dudit arbre

Publications (1)

Publication Number Publication Date
EP1623140A1 true EP1623140A1 (fr) 2006-02-08

Family

ID=33426712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04730235A Withdrawn EP1623140A1 (fr) 2003-05-09 2004-04-29 Arbre d'equilibrage pour un moteur a combustion interne et procede de production dudit arbre

Country Status (4)

Country Link
US (1) US7533646B2 (fr)
EP (1) EP1623140A1 (fr)
DE (1) DE10320747B4 (fr)
WO (1) WO2004099648A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005007143B4 (de) * 2004-10-30 2019-12-05 Tower Automotive Hydroforming Gmbh & Co. Kg Hohlwelle mit darauf durch Innenhochdruckumformen befestigten Funktionselementen und Verfahren zu deren Herstellung
DE102007019008A1 (de) * 2007-04-21 2008-10-23 Schaeffler Kg Verfahren zur Herstellung einer gesenkgeschmiedeten Ausgleichswelle
DE102008061167A1 (de) 2008-12-09 2010-06-10 Daimler Ag Verbundbauteil sowie Verfahren und Vorrichtung zu dessen Herstellung
DE102010032530A1 (de) 2010-07-28 2012-02-02 Gkn Sinter Metals Holding Gmbh Anordnung eines Ausgleichsgewichts an einer Ausgleichswelle
DE102012216418B4 (de) 2012-09-14 2022-02-17 Schaeffler Technologies AG & Co. KG Unwuchtwelle
US20160223068A1 (en) * 2015-02-02 2016-08-04 Caterpillar Inc. Modularized Idler Shaft
DE102015223975B4 (de) 2015-12-02 2020-11-05 Schaeffler Technologies AG & Co. KG Ausgleichswelle für eine Brennkraftmaschine
DE102018106766A1 (de) 2018-03-22 2019-09-26 Schaeffler Technologies AG & Co. KG Unwuchtwelle

Citations (1)

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Publication number Priority date Publication date Assignee Title
US5259268A (en) * 1987-02-10 1993-11-09 Gesenkschmiede Schneider Gmbh Hollowshaft and method for the production thereof

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DE975104C (de) * 1954-02-13 1961-08-10 Daimler Benz Ag Vorrichtung zum Massenausgleich 2. Ordnung fuer eine schnellaufende Vierzylinder-Viertaktbrennkraftmaschine
DE2113193C3 (de) 1971-03-18 1981-07-30 Klöckner-Humboldt-Deutz AG, 5000 Köln Vorrichtung zum Ausgleich der Massenkräfte zweiter Ordnung für Hubkolbenmaschinen
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US6237442B1 (en) * 1996-07-09 2001-05-29 Simpson Industries, Inc. High value static unbalance-type balance shafts
US5857388A (en) * 1996-07-09 1999-01-12 Simpson Industries, Inc. Balance shafts having minimal mass
JPH1137220A (ja) * 1997-07-23 1999-02-12 Aisin Seiki Co Ltd 内燃機関用バランサーシャフト
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US5259268A (en) * 1987-02-10 1993-11-09 Gesenkschmiede Schneider Gmbh Hollowshaft and method for the production thereof

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Title
See also references of WO2004099648A1 *

Also Published As

Publication number Publication date
US20070251489A1 (en) 2007-11-01
DE10320747A1 (de) 2004-12-09
DE10320747B4 (de) 2007-02-01
WO2004099648A1 (fr) 2004-11-18
US7533646B2 (en) 2009-05-19

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