WO2007121725A1 - Axial pin, preferably to be used as a tie rod component - Google Patents

Axial pin, preferably to be used as a tie rod component Download PDF

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Publication number
WO2007121725A1
WO2007121725A1 PCT/DE2007/000708 DE2007000708W WO2007121725A1 WO 2007121725 A1 WO2007121725 A1 WO 2007121725A1 DE 2007000708 W DE2007000708 W DE 2007000708W WO 2007121725 A1 WO2007121725 A1 WO 2007121725A1
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WO
WIPO (PCT)
Prior art keywords
grooves
axial pin
axial
tie rod
cross
Prior art date
Application number
PCT/DE2007/000708
Other languages
German (de)
French (fr)
Inventor
Matthias Klostermann
Original Assignee
Zf Friedrichshafen Ag
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Filing date
Publication date
Application filed by Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2007121725A1 publication Critical patent/WO2007121725A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/16—Arrangement of linkage connections
    • B62D7/163—Arrangement of linkage connections substantially in axial direction, e.g. between rack bar and tie-rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/005—Ball joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/20—Links, e.g. track rods
    • 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
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0604—Construction of the male part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/416—Ball or spherical joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/10—Constructional features of arms
    • B60G2206/11—Constructional features of arms the arm being a radius or track or torque or steering rod or stabiliser end link
    • B60G2206/111—Constructional features of arms the arm being a radius or track or torque or steering rod or stabiliser end link of adjustable length
    • B60G2206/1112—Manually, for alignment purposes
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles
    • F16C2326/24—Steering systems, e.g. steering rods or columns

Definitions

  • Axial pin preferably for use as tie rod component
  • the invention relates to an axial pin, preferably for use as a tie rod component, with at least one portion which is configured as a defined kink at a predetermined limit compressive stress of the axial pin.
  • Axial pins for use as tie rod components are used in the automotive field for the transmission of compressive and tensile forces and represent an essential for the safety of a motor vehicle component.
  • Tie rods in one-piece, multi-part, straight, curved and cranked training are known for such components and the Training a predetermined buckling stability, which means that upon reaching a defined limit compressive stress of the axial pin this kinks at the bend and thereby possibly other, much more expensive components protects against damage
  • the kink can also serve naturally by their design for Grenzzugbelastept as a security element since Of course, the predetermined portion of the axial pin will tear even when exceeding a defined axially effective tensile load.
  • the object of the present invention is therefore to design an axial journal, preferably for use as a tie rod component, in such a way that the necessary production steps can be carried out inexpensively, and that the strength properties of the material used defined in the partial region of the kink optionally permit a surface protection and the predetermined limit stresses of the component are guaranteed.
  • the portion formed as a defined kink has a plurality of axially closely juxtaposed grooves compressed by a rolling process whose groove base cross section is dimensioned smaller than the axial cross sections of the portions laterally adjacent to the portion. Due to the structural design with several juxtaposed grooves can be too large compression of the material in Consequence of the Verrollungsvorganges be prevented because arise between the individual grooves wall portions consisting of a part of the displaced from the grooves material.
  • the kink can be made simultaneously with the processing of other grooves, such as a present on the axial pin Balgnut.
  • the usually necessary additional manufacturing step of a machining of the trained as R ⁇ ickstelle portion thus eliminated completely. This leads to a significant shortening of the cycle time for the production of such a component and thus in terms of the necessary manufacturing costs to not insignificant savings.
  • the cross section of the grooves introduced into the subregion can be semicircular in accordance with an advantageous development of the subject of the invention.
  • Such a design results in a uniform strength image between the groove and groove wall, so that there is no risk of impermissible hardening of the material and thus embrittlement
  • the portion may advantageously have at least four grooves, as this is an appropriate ratio between Nu ⁇ Üefe, strength properties and duration of the manufacturing process for the individual grooves is given.
  • the drawing shows a side view of an axial pin for use as a tie rod component, which is provided at one end with a ball head 1, which for receiving in a Ball socket 2 of a corresponding ball joint is used.
  • the ball socket 2 is part of a ball joint housing, which additionally has a trained as a threaded pin 3 fastener.
  • the ball head 1 of the axial pin is adjoined by a substantially rod-shaped region 4, which has a substantially uniform cross-section in the exemplary embodiment shown.
  • a plurality of grooves 5, 6 and a key surface 7 are introduced, which are necessary in the context of the use of the axial pin as a tie rod member.
  • a portion 8 Between the grooves 5, 6 and the key surface 7 is a portion 8, in which by means of a Verrollungsvorganges a plurality of axially close to each other lying, densified by the Verrollungsvorgang grooves 11 are arranged.
  • the groove bottom cross-section is dimensioned smaller than the axial cross sections of the laterally adjacent to the portion 8 sections 9 and 10 of the axial pin.
  • the defined as a defined kink area 8 serves to allow for a vorbestünmten limiting compressive stress of the axial pin buckling of the latter, such a buckling usually happens in the event of an accident to possibly protect other components from damage.
  • the portion 8 also serves as a backup when exceeding Grenzzugbe pipe., since the axial pin then tears at this point.
  • portion can of course be arranged elsewhere in the axial pin, for example between the groove 5 and the ball head. 1
  • the cross-section of the juxtaposed grooves 11 is essentially semicircular, since such a cross-sectional configuration facilitates the introduction of the grooves 11 in the course of a rolling process.
  • the number of grooves 11 is Lm present embodiment seven, which is related to the predetermined limit compressive stress at which defined as a kink portion 8 its Buckling function should meet. Of course, a smaller number of grooves 11 are conceivable.
  • kink point due to their novel and inventive design can be done simultaneously, for example, with further grooves 5, 6 to be produced in the axial pin by means of the rolling process, so that additional machining steps, as known from the prior art, can be dispensed with.
  • the material compacted in the area of the grooves 11 arranged side by side has only such high strength values, generally below 1000 N / mm 2 , at which a low-cost galvanic surface protection of the axial pin remains possible.
  • a necessary in the art often for such components necessary step of tempering of the components.
  • the production steps thus initially include the cold pressing of the axial journal, to which the rolling process for the grooves 5, 6 and the grooves 11 contained in the sub-region 8 are connected. Subsequently, a surface coating of the Axialzapfens done, followed by the production of the ball head 1 of the axial pin connects.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

Disclosed is an axial pin which is preferably to be used as a tie rod component and comprises at least one subarea that is embodied as a defined bending point when a predetermined critical pressure is applied to the axial pin. Said subarea (8) is provided with several axial grooves (11) which are arranged next to each other at a very short distance and are structurally compressed by means of a rolling process. The cross section at the bottom of said grooves is smaller than the cross sections of the sections (9, 10) that laterally adjoin the subarea (8).

Description

Axialzapfen, vorzugsweise zur Verwendung als Spurstangenbauteil Axial pin, preferably for use as tie rod component
Beschreibungdescription
Die Erfindung betrifft einen Axialzapfen, vorzugsweise zur Verwendung als Spurstangenbauteil, mit mindestens einem Teilbereich, welcher als definierte Knickstelle bei vorbestimmter Grenzdruckbeanspruchung des Axialzapfens ausgestaltet ist.The invention relates to an axial pin, preferably for use as a tie rod component, with at least one portion which is configured as a defined kink at a predetermined limit compressive stress of the axial pin.
Axialzapfen zur Verwendung als Spurstangenbauteile werden im Kraftfahrzeugbereich zur Übertragung von Druck- und Zugkräften benutzt und stellen ein für die Sicherheit eines Kraftfahrzeuges wesentliches Bauelement dar. Dabei sind Spurstangen in einteiliger, mehrteiliger, gerader, gekrümmter und gekröpfter Ausbildung bekannt Bekannt ist für derartige Bauteile auch die Ausbildung einer vorbestimmten Knickstabilität, was bedeutet, dass bei Erreichen einer definierten Grenzdruckbeanspruchung des Axialzapfens dieser an der Knickstelle ausknickt und dadurch gegebenenfalls andere, wesentlich teurere Bauteile vor einer Beschädigung schützt Gleichzeitig kann die Knickstelle zusätzlich natürlich durch ihre Gestaltung auch für Grenzzugbelastungen als Sicherungselement dienen, da der vorbestimmte Teilbereich des Axialzapfens natürlich auch bei Überschreitung einer definierten axial wirksamen Zugbelastung reißen wird.Axial pins for use as tie rod components are used in the automotive field for the transmission of compressive and tensile forces and represent an essential for the safety of a motor vehicle component. Tie rods in one-piece, multi-part, straight, curved and cranked training are known for such components and the Training a predetermined buckling stability, which means that upon reaching a defined limit compressive stress of the axial pin this kinks at the bend and thereby possibly other, much more expensive components protects against damage At the same time, the kink can also serve naturally by their design for Grenzzugbelastungen as a security element since Of course, the predetermined portion of the axial pin will tear even when exceeding a defined axially effective tensile load.
Aus dem Stand der Technik ist es für die Ausgestaltung derartiger Knickstellen bekannt, diese so auszugestalten, dass der Axialzapfen in dem bestimmten Teilbereich entlang seiner Längsachse im Querschnitt geschwächt wird, so dass bei Erreichen der Grenzdruckbelastung in diesem geschwächten Teilbereich die Ausknickung erfolgt. Die Schwächung des Querschnittes wird dabei in aller Regel durch eine Nut erreicht, die mittels einer spanenden Bearbeitung in den Axialzapfen eingebracht wixd. Hinsichtlich einer Einbringung der Nut mittels eines Zerspanungsprozesses ist anzumerken, dass Zerspanvorgänge immer relativ kostenintensiv sind, wobei darüber hinaus festzuhalten ist, dass natürlich zusätzlich eine Entsorgung des zerspanten Materials notwendig wird.From the prior art, it is known for the design of such kinks to design these so that the axial pin is weakened in the specific portion along its longitudinal axis in cross section, so that when reaching the limit pressure load in this weakened portion of the buckling occurs. The weakening of the cross section is usually achieved by a groove which wixd introduced by means of a machining in the axial journal. With regard to an introduction of the groove by means of a machining process, it should be noted that machining operations are always relatively cost-intensive, it being also noted that, of course, additionally disposal of the machined material becomes necessary.
Darüber hinaus ist beispielsweise aus der DE 43 19 076 Al ein Verfahren zur HersteDung von Spurstangen bekannt, bei dem eine über die Längsachse der Spurstange gesehen relativ breite Axialnut in das betreffende Bauteil eingebracht wird. Das Einbringen erfolgt hierbei durch einen Schmiede- oder Walzvorgang.In addition, for example, from DE 43 19 076 Al a method for the production of tie rods is known in which a seen over the longitudinal axis of the tie rod relatively wide axial groove is introduced into the relevant component. The introduction takes place here by a forging or rolling process.
Nachteil des aus dem Stand der Technik bekannten Verfahrens ist dabei, dass durch das Einbringen der Nut mittels des Walzvorganges durch die Verdrängung des Materials und die Verdichtung im Querschnitt über die Nutbreite Festigkeitswerte erzeugt werden, die zum einen eine nicht unerhebliche Versprödung des Materials mit sich bringen und zum anderen den bei Spurstangen in der Regel erforderlichen galvanischen Oberflächenschutz verhindern.Disadvantage of the known from the prior art method is that strength values are generated by introducing the groove by means of the rolling process by the displacement of the material and the compression in cross section over the groove width, which bring to a considerable embrittlement of the material with it and secondly, to prevent the galvanic surface protection that is usually required with tie rods.
Aufgabe der vorliegenden Erfindung ist es daher, einen Axialzapfen, vorzugsweise zur Verwendung als Spurstangenbauteil so auszubilden, dass die notwendigen Fertigungsschritte kostengünstig durchgeführt werden können, und dass die im Teilbereich der Knickstelle definierten Festigkeitseigenschaften des verwendeten Materials gegebenenfalls einen Oberflächenschutz ermöglichen und die vorbestimmten Grenzbeanspruchungen des Bauteils gewährleistet sind.The object of the present invention is therefore to design an axial journal, preferably for use as a tie rod component, in such a way that the necessary production steps can be carried out inexpensively, and that the strength properties of the material used defined in the partial region of the kink optionally permit a surface protection and the predetermined limit stresses of the component are guaranteed.
Diese Aufgabe wird zusammen mit den gattungsbildenden Merkmalen des Anspruches 1 durch die im kennzeichnenden Teil offenbarte technische Lehre gelöst.This object is achieved together with the generic features of claim 1 by the technical teaching disclosed in the characterizing part.
Erfindungswesentlich dabei ist es, dass der als definierte Knickstelle ausgebildete Teilbereich mehrere axial eng nebeneinander angeordnete, durch einen Verrollungsvorgang gefügeverdichtete Nuten aufweist, deren Nutgrundquerschnitt kleiner bemessen ist als die axialen Querschnitte der seitlich an den Teilbereich angrenzenden Abschnitte. Durch die konstruktive Gestaltung mit mehreren nebeneinander angeordneten Nuten kann eine zu große Verdichtung des Materials in Folge des Verrollungsvorganges verhindert werden, weil sich zwischen den einzelnen Nuten Wandbereiche ergeben, die aus einem Teil des aus den Nuten verdrängten Materials bestehen. Darüber hinaus lässt sich durch die eng nebeneinander angeordneten Nuten auf einfache Art und Weise eine Anpassung der Knickstabilität durch die Anzahl der eingebrachten Nuten erreichen, ohne dass eine zu große Querschnittsveηüngung und eine damit verbundene zu große Festigkeitserhöhung im betreffenden Teilbereich zu befürchten ist wie dies bei einer Nutherstellung gemäß dem Stand der Technik der Fall wäre.It is essential to the invention that the portion formed as a defined kink has a plurality of axially closely juxtaposed grooves compressed by a rolling process whose groove base cross section is dimensioned smaller than the axial cross sections of the portions laterally adjacent to the portion. Due to the structural design with several juxtaposed grooves can be too large compression of the material in Consequence of the Verrollungsvorganges be prevented because arise between the individual grooves wall portions consisting of a part of the displaced from the grooves material. In addition, can be achieved by the number of grooves introduced by the closely juxtaposed grooves in a simple way an adjustment of the buckling stability, without too great Querschnittsveηüngung and an associated increase in strength in the relevant sub-range is to be feared as in a Nut production according to the prior art would be the case.
Darüber hinaus ist bei der erfinderischen Ausgestaltung des Axialzapfens von Vorteil, dass die Knickstelle gleichzeitig mit der Bearbeitung anderer Nuten, wie beispielsweise einer am Axialzapfen vorhandenen Balgnut, vorgenommen werden kann. Der üblicherweise notwendige zusätzliche Fertigungsschritt einer zerspanenden Bearbeitung des als Rπickstelle ausgebildeten Teilbereiches entfällt somit vollständig. Dies fuhrt zu einer signifikanten Verkürzung der Taktzeit für die Herstellung eines derartigen Bauteils und somit hinsichtlich der notwendigen Herstellkosten zu nicht unerheblichen Einsparungen.Moreover, in the inventive embodiment of the axial pin of advantage that the kink can be made simultaneously with the processing of other grooves, such as a present on the axial pin Balgnut. The usually necessary additional manufacturing step of a machining of the trained as Rπickstelle portion thus eliminated completely. This leads to a significant shortening of the cycle time for the production of such a component and thus in terms of the necessary manufacturing costs to not insignificant savings.
Der Querschnitt der in den Teilbereich eingebrachten Nuten kann entsprechend einer vorteilhaften Weiterbildung des Gegenstandes der Erfindung halbkreisförmig ausgebildet sein. Eine derartige Gestaltung führt zu einem gleichmäßigen Festigkeitsbild zwischen Nut und Nutwandung, so dass keine Gefahr einer unzulässigen Verhärtung des Materials und somit einer Versprödung bestehtThe cross section of the grooves introduced into the subregion can be semicircular in accordance with an advantageous development of the subject of the invention. Such a design results in a uniform strength image between the groove and groove wall, so that there is no risk of impermissible hardening of the material and thus embrittlement
Der Teilbereich kann vorteilhafterweise mindestens vier Nuten aufweisen, da hierdurch ein zweckmäßiges Verhältnis zwischen NuτÜefe, Festigkeitseigenschaften und Dauer des Herstellvorganges für die einzelnen Nuten gegeben ist.The portion may advantageously have at least four grooves, as this is an appropriate ratio between NuτÜefe, strength properties and duration of the manufacturing process for the individual grooves is given.
Im Folgenden wird ein Ausführungsbeispiel des Gegenstandes der Erfindung anhand der beigefügten Zeichnung näher erläutert. Die Zeichnung zeigt dabei eine Seitenansicht eines Axialzapfens zur Verwendung als Spurstangenbauteil, welches an einem Ende mit einem Kugelkopf 1 versehen ist, welcher zur Aufnahme in einer Kugelpfanne 2 eines korrespondierenden Kugelgelenkes dient. Die Kugelpfanne 2 ist dabei Bestandteil eines Kugelgelenkgehäuses, welches zusätzlich ein als Gewindezapfen 3 ausgebildetes Befestigungselement aufweist.In the following an embodiment of the object of the invention will be explained in more detail with reference to the accompanying drawings. The drawing shows a side view of an axial pin for use as a tie rod component, which is provided at one end with a ball head 1, which for receiving in a Ball socket 2 of a corresponding ball joint is used. The ball socket 2 is part of a ball joint housing, which additionally has a trained as a threaded pin 3 fastener.
An den Kugelkopf 1 des Axialzapfens schließt sich ein im Wesentlichen stangenföπniger Bereich 4 an, welcher im dargestellten Ausführungsbeispiel im Wesentlichen einen gleichförmigen Querschnitt aufweist. In den stangenföπnigen Bereich sind mehrere Nuten 5, 6 und eine Schlüsselfläche 7 eingebracht, die im Rahmen der Verwendung des Axialzapfens als Spurstangenbauteil notwendig sind.The ball head 1 of the axial pin is adjoined by a substantially rod-shaped region 4, which has a substantially uniform cross-section in the exemplary embodiment shown. In the rod-shaped area a plurality of grooves 5, 6 and a key surface 7 are introduced, which are necessary in the context of the use of the axial pin as a tie rod member.
Zwischen den Nuten 5, 6 sowie der Schlüsselfläche 7 befindet sich ein Teilbereich 8, in den mittels eines Verrollungsvorganges mehrere axial dicht beieinander liegende, durch den Verrollungsvorgang gefügeverdichtete Nuten 11 angeordnet sind. Der Nutgrundquerschnitt ist dabei kleiner bemessen als die axialen Querschnitte der seitlich an den Teilbereich 8 angrenzenden Abschnitte 9 und 10 des Axialzapfens.Between the grooves 5, 6 and the key surface 7 is a portion 8, in which by means of a Verrollungsvorganges a plurality of axially close to each other lying, densified by the Verrollungsvorgang grooves 11 are arranged. The groove bottom cross-section is dimensioned smaller than the axial cross sections of the laterally adjacent to the portion 8 sections 9 and 10 of the axial pin.
Der als definierte Knickstelle derart ausgebildete Teilbereich 8 dient dazu, bei einer vorbestünmten Grenzdruckbeanspruchung des Axialzapfens ein Ausknicken von Letzterem zu ermöglichen, wobei ein derartiges Ausknicken in der Regel im Falle eines Unfalles geschieht, um gegebenenfalls andere Bauteile vor einer Beschädigung zu schützen. Gleichzeitig dient der Teilbereich 8 auch als Sicherung bei Überschreitung von Grenzzugbeanspruchungen, da der Axialzapfen dann an dieser Stelle reißt.The defined as a defined kink area 8 serves to allow for a vorbestünmten limiting compressive stress of the axial pin buckling of the latter, such a buckling usually happens in the event of an accident to possibly protect other components from damage. At the same time, the portion 8 also serves as a backup when exceeding Grenzzugbeanspruchungen, since the axial pin then tears at this point.
Darüber hinaus kann der Teilbereich selbstverständlich auch an anderer Stelle des Axialzapfens angeordnet werden, beispielsweise zwischen der Nut 5 und dem Kugelkopf 1.In addition, the portion can of course be arranged elsewhere in the axial pin, for example between the groove 5 and the ball head. 1
Wie der Figur zu entnehmen ist, ist der Querschnitt der nebeneinander angeordneten Nuten 11 im Wesentlichen halbkreisförmig ausgebildet, da eine derartige Querschnittsgestaltung das Einbringen der Nuten 11 im Rahmen eines Verrollungsvorganges erleichtert. Die Anzahl der Nuten 11 beträgt Lm vorliegenden Ausführungsbeispiel sieben, was mit der vorbestimmten Grenzdruckbeanspruchung zusammenhängt, bei der der als Knickstelle definierte Teilbereich 8 seine Ausknickfunktion erfüllen soll. Natürlich sind auch eine geringere Anzahl von Nuten 11 denkbar.As can be seen from the figure, the cross-section of the juxtaposed grooves 11 is essentially semicircular, since such a cross-sectional configuration facilitates the introduction of the grooves 11 in the course of a rolling process. The number of grooves 11 is Lm present embodiment seven, which is related to the predetermined limit compressive stress at which defined as a kink portion 8 its Buckling function should meet. Of course, a smaller number of grooves 11 are conceivable.
Erfindungswesentlich ist es, dass die Knickstelle auf Grund ihrer neuartigen und erfinderischen Gestaltung gleichzeitig beispielsweise mit weiteren im Axialzapfen herzustellenden Nuten 5, 6 mittels des Verrollungsvorganges erfolgen kann, so dass zusätzliche Zerspanungsschritte, wie aus dem Stand der Technik bekannt, entfallen können.It is essential to the invention that the kink point due to their novel and inventive design can be done simultaneously, for example, with further grooves 5, 6 to be produced in the axial pin by means of the rolling process, so that additional machining steps, as known from the prior art, can be dispensed with.
Gleichzeitig ist gewährleistet, dass das gefügeverdichtete Material im Bereich der nebeneinander angeordneten Nuten 11 nur so hohe Festigkeitswerte, in der Regel unter 1000 N/mm2, aufweist, bei dem ein günstig herzustellender galvanischer Oberflächenschutz des Axialzapfens möglich bleibt. Darüber hinaus entfällt ein im Stand der Technik oftmals für derartige Bauteile notwendiger Schritt einer Temperung der Bauelemente.At the same time, it is ensured that the material compacted in the area of the grooves 11 arranged side by side has only such high strength values, generally below 1000 N / mm 2 , at which a low-cost galvanic surface protection of the axial pin remains possible. In addition, a necessary in the art often for such components necessary step of tempering of the components.
Es bleibt somit festzuhalten, dass die Herstellung des Axialzapfens ohne den üblicherweise notwendigen Zerspanungsvorgang erfolgt. Die Fertigungsschritte umfassen somit zunächst das Kaltpressen des Axialzapfens, an den sich der Verrollungsvorgang für die Nuten 5, 6 sowie die im Teilbereich 8 enthaltenen Nuten 11 anschließt. Anschließend kann eine Oberflächenbeschichtung des Axialzapfens erfolgen, woran sich die Herstellung des Kugelkopfes 1 des Axialzapfens anschließt. It thus remains to be noted that the manufacture of the axial pin takes place without the usually necessary cutting operation. The production steps thus initially include the cold pressing of the axial journal, to which the rolling process for the grooves 5, 6 and the grooves 11 contained in the sub-region 8 are connected. Subsequently, a surface coating of the Axialzapfens done, followed by the production of the ball head 1 of the axial pin connects.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Kugelkopf1 ball head
2 Kugelpfanne2 ball socket
3 Geleidczapfen3 jar pegs
4 Stangenföπniger Bereich4 rod-shaped area
5 Nut5 groove
6 Nut6 groove
7 Passfedereinschnitt7 feather key cut
8 Teilbereich8 subarea
9 Abschnitt9 section
10 Abschnitt10 section
11 Nut 11 groove

Claims

Axialzapfen, vorzugsweise zur Verwendung als SpurstangenbauteilPatentansprüche Axial pins, preferably for use as tie rod component patents
1. Axialzapfen, vorzugsweise zur Verwendung als Spurstangenbauteil mit mindestens einem Teilbereich, welcher als definierte Knickstelle bei vorbβstimmter Grenzdruckbeanspruchung des Axialzapfens ausgestaltet ist, dadurch gekennzeichnet, dass der Teilbereich (8) mehrere axial eng nebeneinander angeordnete, durch einen Verrollungsvorgang gefügeverdichtete - Nuten (11) aufweist, deren Nutgrundquerschnitt kleiner bemessen ist als die axialen Querschnitte der seitlich an den Teilbereich (8) angrenzenden Abschnitte (9, 10).1. Axial pin, preferably for use as a tie rod member having at least a portion which is designed as a defined kink at vorbβstimmter boundary compressive stress of the axial pin, characterized in that the portion (8) a plurality of axially closely juxtaposed, gefügeverdichtete by a rolling process - grooves (11) whose groove base cross section is dimensioned smaller than the axial cross sections of the laterally adjacent to the subregion (8) sections (9, 10).
2. Axialzapfen nach Anspruch 1, dadurch gekennzeichnet, dass der Querschnitt der Nuten (5, 6, 11) im Wesentlichen halbkreisförmig ausgebildet ist.2. Axial pin according to claim 1, characterized in that the cross section of the grooves (5, 6, 11) is formed substantially semicircular.
3. Axialzapfen nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass in dem Teilbereich (8) mindestens vier Nuten (11) nebeneinander angeordnet sind.3. Axial pin according to one of claims 1 or 2, characterized in that in the partial region (8) at least four grooves (11) are arranged side by side.
4. Axialzapfen nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass durch die Gefügeverdichtung ein Festigkeitswert des mit den Nuten (11) versehenen Teilbereiches (8) von unter 1000 N/mm2 erreicht ist. 4. Axial pin according to one of claims 1 to 3, characterized in that by the structure compaction, a strength value of the grooves (11) provided with the sub-area (8) of less than 1000 N / mm 2 is reached.
PCT/DE2007/000708 2006-04-24 2007-04-20 Axial pin, preferably to be used as a tie rod component WO2007121725A1 (en)

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Application Number Priority Date Filing Date Title
DE102006019341A DE102006019341B3 (en) 2006-04-24 2006-04-24 Axial pin, preferably for use as tie rod component
DE102006019341.5 2006-04-24

Publications (1)

Publication Number Publication Date
WO2007121725A1 true WO2007121725A1 (en) 2007-11-01

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Country Status (2)

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DE (1) DE102006019341B3 (en)
WO (1) WO2007121725A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2783946A1 (en) * 2013-03-27 2014-10-01 Jtekt Europe Lightened tie rod with stepped pivot
CN105923044A (en) * 2016-04-28 2016-09-07 苏州市林氏精密五金标准件制造有限公司 Specially-shaped connecting rod
CN106043424A (en) * 2016-06-29 2016-10-26 奇瑞汽车股份有限公司 Ball pin, automobile steering system and automobile

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DE102008000936B4 (en) 2008-04-02 2014-04-10 Zf Friedrichshafen Ag Wheel suspension for a vehicle and connecting element for such a suspension
DE102010011934A1 (en) 2010-03-18 2011-09-22 Noell Mobile Systems Gmbh Steering a portal stacker
DE102011079267A1 (en) 2011-07-15 2013-01-17 Zf Friedrichshafen Ag Ball joint with overload protection, particularly for wheel suspensions or steering system, has joint housing and bearing pin that is provided with ball portion and shaft portion, where catching element is provided with recess
FR3002297B1 (en) * 2013-02-20 2015-08-14 Jtekt Europe Sas PROCESS FOR THE HYDRAULIC PRODUCTION OF AN ALTERNATE DIRECTION LINK

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DE1916576A1 (en) * 1969-04-01 1971-01-21 Schmid Leopold F Ball joint with a particularly large bending angle, especially for steering rods of motor vehicles
DE4319076A1 (en) * 1992-06-08 1993-12-09 Rhythm Corp Manufacturing method for producing tie rods - involves producing untempered rod and the shaping to determined diameter and further shaping into differently shaped regions
DE19820124A1 (en) * 1998-05-06 1999-02-25 Hans A Dipl Ing Haerle Steering rod tube production
EP0964171A2 (en) * 1998-06-09 1999-12-15 Kabushiki Kaisha Somic Ishikawa Ball stud, method and apparatus for production thereof, and ball joint

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DE8029161U1 (en) * 1980-11-03 1981-03-12 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart STEERING FOR VEHICLES
US6298962B1 (en) * 1998-03-13 2001-10-09 Showa Denko K.K. Member for arm

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Publication number Priority date Publication date Assignee Title
DE1916576A1 (en) * 1969-04-01 1971-01-21 Schmid Leopold F Ball joint with a particularly large bending angle, especially for steering rods of motor vehicles
DE4319076A1 (en) * 1992-06-08 1993-12-09 Rhythm Corp Manufacturing method for producing tie rods - involves producing untempered rod and the shaping to determined diameter and further shaping into differently shaped regions
DE19820124A1 (en) * 1998-05-06 1999-02-25 Hans A Dipl Ing Haerle Steering rod tube production
EP0964171A2 (en) * 1998-06-09 1999-12-15 Kabushiki Kaisha Somic Ishikawa Ball stud, method and apparatus for production thereof, and ball joint

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2783946A1 (en) * 2013-03-27 2014-10-01 Jtekt Europe Lightened tie rod with stepped pivot
FR3003836A1 (en) * 2013-03-27 2014-10-03 Jtekt Europe Sas ROD OF DIRECTION ALLEGEE WITH PIVOT FLOOR
CN105923044A (en) * 2016-04-28 2016-09-07 苏州市林氏精密五金标准件制造有限公司 Specially-shaped connecting rod
CN106043424A (en) * 2016-06-29 2016-10-26 奇瑞汽车股份有限公司 Ball pin, automobile steering system and automobile
CN106043424B (en) * 2016-06-29 2019-02-22 奇瑞汽车股份有限公司 A kind of automobile steering system and automobile

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