WO2014040887A1 - Unité de direction et procede de fabrication d'une unité de direction - Google Patents

Unité de direction et procede de fabrication d'une unité de direction Download PDF

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Publication number
WO2014040887A1
WO2014040887A1 PCT/EP2013/068229 EP2013068229W WO2014040887A1 WO 2014040887 A1 WO2014040887 A1 WO 2014040887A1 EP 2013068229 W EP2013068229 W EP 2013068229W WO 2014040887 A1 WO2014040887 A1 WO 2014040887A1
Authority
WO
WIPO (PCT)
Prior art keywords
support
node unit
unit
support element
state
Prior art date
Application number
PCT/EP2013/068229
Other languages
German (de)
English (en)
Inventor
Olaf Drewes
Frederik Biewer
Original Assignee
Saf-Holland Gmbh
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 Saf-Holland Gmbh filed Critical Saf-Holland Gmbh
Publication of WO2014040887A1 publication Critical patent/WO2014040887A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
    • B60G9/003—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle being rigidly connected to a trailing guiding device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/02—Dead axles, i.e. not transmitting torque
    • B60B35/08—Dead axles, i.e. not transmitting torque of closed hollow section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • 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
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms
    • 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
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms
    • B60G2204/148—Mounting of suspension arms on the unsprung part of the vehicle, e.g. wheel knuckle or rigid axle
    • 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
    • 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
    • B60G2206/30—Constructional features of rigid axles
    • B60G2206/32—Hollow cross section
    • 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
    • B60G2206/80—Manufacturing procedures
    • B60G2206/82—Joining
    • B60G2206/8201—Joining by welding
    • B60G2206/82013—Friction or heat welding
    • 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
    • B60G2206/80—Manufacturing procedures
    • B60G2206/82—Joining
    • B60G2206/8209—Joining by deformation

Definitions

  • the present invention relates to a handlebar unit for commercial vehicles and to a method for manufacturing a handlebar unit.
  • Handlebar units for use in chassis systems of commercial vehicles are well known from the prior art.
  • the rigid axle or the steering axis of a commercial vehicle via a link member which is pivotally fixed to the vehicle frame of the commercial vehicle and stored a spring element to increase the traffic safety and comfort of the commercial vehicle.
  • a weak point of the chassis system of the commercial vehicle is often the attachment of the vehicle axle to the handlebar element, wherein a lifetime limitation due to failure of the connection of the axle system with the handlebar unit is often the Main cause is.
  • the link element is fixed by means of a welded connection or a clamping connection on the rigid axle or the steering axle of the utility vehicle, in particular by the locally very high temperature or heat input into the material of the rigid axle and the link element structural changes can occur, which After cooling the respective components lead to thermal stresses and can drastically reduce the life of the respective components.
  • the hitherto known link elements lack variability for use in various commercial vehicles.
  • the air spring holder of a link element is not, or not without great design effort, independently of the rest of the handlebar element or the rest of the mounting area on the vehicle frame of the commercial vehicle interchangeable and it can not be used for a certain trailing arm readily another air spring.
  • a trailing arm designed for a certain travel height range can not easily be used for other applications or travel heights.
  • Object of the present invention is to provide a handlebar unit, which in particular is easy to manufacture, while allowing a high variability of their application and at the same time a simple and cost-effective production. This object is achieved by a method for producing a linkage unit according to independent claim 1 and a linkage unit according to independent claim 8. Further advantages and features of the invention will become apparent from the dependent claims.
  • a method for producing a link unit comprises the steps of: providing a node unit in a first state comprising a base section and a node attachment section; Providing a support member in a first state having a mounting portion; Fixing the attachment portion to the support portion; Forming the composite of node unit and first support element in a second state, wherein the second state is characterized by a non-linear cross-sectional profile of at least the support element.
  • Characteristic of the method for producing a link unit is that in a first state components are to be used, which allow the simplest possible production or possible lent easy assembly.
  • the link unit allows in particular for receiving and transmitting large forces and bending moments, as they occur in particular in commercial vehicles on the chassis.
  • the node unit is preferably a component which has at least one, preferably a plurality of support sections, which are designed to define further elements on the node unit.
  • the support sections are particularly preferred for the use of cost-effective and time-saving fastening methods, such as internal high-pressure forming or friction welding, for fixing the at least one Support element designed.
  • the support element has, according to the invention, a fastening section which is particularly preferably designed to be fixed to a corresponding support section by means of a friction welding or a forming process.
  • the support section and the attachment section of the support element preferably have a circular cross-section, which makes it possible, for example, to enable rotational friction welding for the material connection of the support element to the node unit.
  • a forming method which is optionally applied to the support element or the node unit or the support element together with the node unit, can be used.
  • a positive connection between the attachment portion of the support member and the support portion is preferably prepared, in particular preferably an undercut between see the respective components is formed, which substantially or completely prevents a displacement of the first support member relative to the node unit.
  • the form-fitting connection between the first fastening section and the support section can in particular be cohesively supported by further means, such as, for example, a bond or a solder connection.
  • a first state of the node unit and / or the support element is characterized by particularly simple, particularly preferably linear cross-sectional profiles of the two components.
  • the support element in the first state is characterized by particularly simple, particularly preferably linear cross-sectional profiles of the two components.
  • the second state according to the invention is characterized in particular in that at least the support element has a non-linear cross-sectional profile.
  • This non-linearity of the cross section of the support element relates both to the general main extension of the support element along a preferably curved path and to the wall thicknesses of the support element which change along this path.
  • the cross-sectional shape so for example a elliptical, circular or polygonal cross-section, vary along the main extension direction of the support element.
  • the cross section of the support element in the course over different cutting planes along the main extension direction of the support member is formed such that the surface inertia, which results from the respective cross sections optimally to an expected load, such as bending, on the support member during operation of the commercial vehicle, is designed.
  • the support element is preferably designed as a hollow-body-shaped or tube-like body and, in the second state, in particular preferably has rounded geometries in order to avoid a notch effect in the event of bending or torsional stress.
  • the fixing of the support element to the node unit and at the same time the forming of the composite of the node unit and the support element in the second state in a step pass, in which preferably mated components are inflated by means of a hydroforming process and so First, the support element is fixed positively to the node unit and then the composite of node unit and support element is further deformed until the desired non-linear cross-sectional profile is set.
  • the method according to the invention comprises an additional step, in which the fastening section is fixed to the support section in a force-locking and / or form-fitting manner by deformation.
  • the attachment portion of the support element is initially fixed only frictionally on the support portion and is then fixed by a forming process also form-fitting on the support portion.
  • the fastening portion can be fixed to the support portion by a clamp, but it is particularly preferred to support or reinforce this clamping connection between the mounting portion and the support portion by an additional positive connection, for example by means of an undercut.
  • a frictional connection can be carried out, for example, by means of an interference fit generated by heating one of the components and subsequent cooling.
  • the fastening section is widened after insertion into the support section in order to form an undercut with the internal geometry of the support section.
  • the attachment portion is transferred by the expansion at the same time in the second state.
  • corresponding forward or backward jumps are provided, in particular on the fastening section and on the support section, which simplify the creation of a positive connection between the fastening section and the support section.
  • the attachment portion may also be formed as a tubular portion which is slid onto a support portion with a smaller diameter, wherein an inner surface of the attachment portion engages with an outer geometry of the support portion and preferably forms an undercut.
  • the attachment portion is fixed cohesively on the support portion.
  • a cohesive connection between the attachment portion and the support portion may be particularly preferably provided to support a further provided connection between the two sections. Further preferably, a purely cohesive connection between the attachment portion and the support portion may be advantageous. Particularly preferably, the cohesive connection can be produced by means of a rotational friction welding method, wherein the fastening section, which is in particular tubular, rotates relative to the support section a contact surface of the support portion is pressed, wherein a fusion of the material of the fastening portion and / or the support portion takes place and wherein after reducing the rotational speed to a standstill and the cooling of the molten material, the fixing portion is fixed materially on the support portion.
  • Rotationsreibsch usageen is particularly preferred because it avoids a high local temperature input into the manufacturing material, as occurs in thermal welding or arc welding, and thus prevents adverse weakening of the structure or the joint of the two components node unit and support element.
  • the attachment portion can also be adhesively secured to the support portion by means of an adhesive or soldered connection, these methods being particularly suitable when the attachment portion is formed from a material having a melting temperature that deviates significantly from the material of the support portion.
  • the attachment portion has an excess in the first state relative to the support portion, so that after merging the attachment portion with the support portion of the resulting overlap region is fluid-tight.
  • the fastening section can be inserted into the support section or the support section can be inserted into the fastening section, it is preferred that the component which corresponds with its outer geometry to the internal geometry of the respective other component has an oversize to the component into which it is inserted ,
  • This design proves to be advantageous if, after pushing the components together, a hydroforming method is to be used in which a fluid under high pressure is pressed into the cavity formed by the two components in order to expand at least one of the two components and, for example, thereby to create a positive connection between the two components.
  • the fluid-tightness of the overlapping zone of the components can also be supported by means of a material-locking connection, for example by introducing a solder or by a corresponding adhesive.
  • the support element is pushed through the node unit and then fixed by means of a forming process at the node unit, wherein the support element preferably engages with a respective attachment portion in a respective support portion.
  • the axis of the utility vehicle with the stub axle fixed thereto can be pushed through the node unit and subsequently fixed to the node unit by means of a forming process.
  • the node unit may have at least one inner abutment portion, on which the support element is applied with a correspondingly corresponding abutment geometry and, for example, by means of a Rotationsreibsch spa- procedure on the investment geometry or the investment section is determined.
  • a plurality of abutment portions are provided so that the support member is fixed via a plurality of attachment points on the node unit, in particular the transmission of bending moments from the support member to the node unit the present lever arms results in smaller forces.
  • a first support element is pushed through the node unit and secured to at least one support portion of the node unit, wherein a second support element is provided, which is determined by means of a friction welding at a further support portion of the node unit.
  • a second support element is provided, which is determined by means of a friction welding at a further support portion of the node unit.
  • the support element is in particular in the attachment portion in the first state rotationally symmetrical or has a rotationally symmetrical cross-section.
  • the rotational symmetry relates in particular to a fastening axis along which the support element is pressed against the nodal unit and about which rotates the support member when using a preferred rotary friction welding process.
  • the rotational symmetry preferably ensures an avoidance of imbalances, which can lead to dangerous vibrations during Rotationsreibsch resumeens.
  • a handlebar unit for use in commercial vehicles, which comprises a node unit and a support element, wherein the node unit and the support element are joined together in a first state and in a second state, the composite of node unit and support element, at least in the region of the support element along a fastening axis non-linear cross-sectional profile has.
  • the nodal unit is preferably hollow-body-shaped at least in some areas and has at least one support section on which the support element is secured by its attachment section.
  • the node unit is preferably designed such that a torque or force transmission of support elements fixed to the node unit can be particularly favorable and result in a particularly low load on the material of the node unit.
  • support elements for example, elements of a trailing arm of a commercial vehicle or elements of the rigid or the steering axis of a commercial vehicle and a stub axle element come into question.
  • further fastening sections can be formed on the node unit directly or integrally, on which further elements of the chassis of a commercial vehicle can be fixed, such as a brake carrier or a connection section for the shock absorber of a commercial vehicle.
  • the support element is fixed by friction welding to the node unit. In this case, rotational friction welding is particularly preferably used, in which the components to be welded are pressed relative to each other in a rotating manner against each other.
  • the link unit is that the contact zone between the first support member and the node unit is a surface along which the material of the two components is fused together. Compared to thermal welding, high thermal stress is less likely to occur and the risk of scaling or burns on the material is low. Furthermore, the friction welding is characterized in that different materials can be welded together, with particular preference, manufacturing materials can be used with different melting temperatures. As an alternative possibilities of a cohesive connection between the support element and the node unit to form an adhesive bond or a connection may be provided by means of a solder, these cohesive compounds particularly preferably connect different manufacturing materials of the support member and the node unit together.
  • the node unit in the first state, a first link portion, wherein the first link portion in the first and / or in the second state of the handlebar unit is preferably designed as a mounting area for an air spring of the utility vehicle.
  • individual handlebar sections are already formed integrally with the nodal unit and only require a transformation from the first to the second state in the further course of production of the handlebar unit. In this case, it makes sense, in particular, to already form the holding area or fastening area for an air spring of a commercial vehicle integrally with the node unit, since this does not particularly restrict the manageability of the node unit.
  • the node unit may be preferable to produce the node unit with an integrally formed, first link section by means of a casting method, wherein for the support section particularly complicated or complex geometries can be selected, which would otherwise be produced by a later forming process only with great effort.
  • the support section particularly complicated or complex geometries can be selected, which would otherwise be produced by a later forming process only with great effort.
  • Alternatively or additionally preferred may be at the Node unit and the stub axle of the vehicle axle of a commercial vehicle to be integrally formed.
  • a second Stützele- ment is provided, which is fixed to the node unit and which preferably forms a portion of a trailing arm of a commercial vehicle in the first state.
  • the second support element may be, for example, the lever arm of a trailing arm of a utility vehicle which extends between the node unit and a bearing block connected to the frame of the utility vehicle.
  • the first support member is formed of a different material than the node unit and / or the second support member.
  • a friction welding or forming process which in turn can be supported by a material connection by means of solder or adhesive bond
  • parts of the handlebar unit are formed from aluminum, wherein only the heavily loaded parts such as the node unit or the stub axle are formed of a stronger steel.
  • composite materials such as a carbon fiber composite material, are used, which can be cured, for example, only after setting on the node unit and the transfer to the second state and thus enters into a permanent connection with the node unit.
  • FIG. 1 a-c views of a steering unit according to the invention, in particular
  • FIGS. 2a-b are sectional views of a preferred embodiment of the support element according to the invention and the node unit,
  • FIG. 3a-c are sectional views of a preferred embodiment of the link unit according to the invention, which illustrate in particular steps of a manufacturing method for the link unit according to the invention
  • Fig. 4 is a perspective view of a preferred embodiment of the node unit according to the invention.
  • Fig. 5 is a view of a preferred embodiment of the link unit according to the invention in the second state.
  • FIGS. 1 a to c show schematically the production sequence for a handlebar unit according to the invention.
  • a node unit 2 in a first step of the production method, a node unit 2, a first support element 42a and a third support element 42c are provided, which are intended to be joined together in the course of the further method to form a linkage unit according to the invention.
  • the node unit 2 has a base section 22 on which, in a particularly preferred embodiment, a first link section 28 and a second link section 32 are formed integrally or integrally.
  • the node unit 2 preferably has a first attachment portion 24a and a third attachment portion 24c.
  • the first link section 28 is particularly preferably designed plate-shaped and suitable for supporting an air spring of a commercial vehicle.
  • the second link section 32 of the node unit 2 is particularly preferably designed as a stub axle section, the wheel bearing of a vehicle grade of the commercial vehicle to be mounted on the link unit being particularly preferably storable on the second link section 32.
  • the first attachment portion 24a is preferably aligned along a first attachment axis Bi opposite the second link portion 32 and aligned coaxially therewith.
  • the first fastening section 24a is particularly preferably designed to connect the rigid axle or the steering axle of a commercial vehicle to the node unit 2.
  • the first support element 42a is particularly preferably the rigid axle or steering axle of a commercial vehicle, is particularly preferably hollow-body-shaped or tubular, or has a hollow cylindrical shape and has a first attachment section 43a, which essentially corresponds to the first support section 24a of the node unit 2.
  • the first support element 42a is pressed against the first support section 24a of the node unit 2 in a rotational manner about the first attachment axis Bi along the first attachment axis Bi.
  • the third support member 42c has a first attachment portion 43c which is provided to be fixed to the third support portion 24c of the node unit 2 by a friction welding method.
  • the third support element 42c is shown in its preferred first state, in which it preferably has a simple tubular geometry and, in particular, is formed essentially rotationally symmetrical about a second attachment axis B 2 in its first attachment section 43c.
  • the third support member 42c is preferably pressed around the second attachment axis B 2 in rotation along the second attachment axis B 2 against a third support portion 24c of the node unit 2, forming a friction weld between the third support portion 24c and the first attachment portion 43c of the third support member 42c
  • Fig. 1b shows the linkage unit according to the invention, still in the first state, after completion of the friction welding process for fixing the first support member 42a and the third support member 42c.
  • the first state is preferably characterized in that the linkage unit and in particular the support elements 42a to be fixed to the node unit 2, 42c have easy to be manufactured or processed cross-sectional geometry.
  • the first support element 42a and the third support element 42c in the first state are preferably characterized by a simple, hollow-body-shaped or tubular cross-section formed essentially rotationally symmetrically around the respective attachment axis Bi, B 2 .
  • FIG. 1 c shows the handlebar unit already shown in FIGS.
  • the third support element 42c preferably being in a non-linear or substantially non-rotationally symmetrical manner about the second fastening axis B 2 by means of a forming process extending form was brought.
  • the non-linear cross-sectional profile of the third support element 42c is in particular designed to transmit forces and bending moments which are to be transmitted by the third support element 42c to a further unit of the undercarriage by means of a particularly favorable, ie low-voltage, voltage characteristic from the node unit 2 via the third support element 42c - to transmit mens.
  • the non-linear cross-sectional profile is preferably produced by means of a hydroforming process, wherein in addition to the third support member 42c preferably further support elements and / or the node unit 2 can be deformed such that a favorable Biegemoment- and power transmission can be ensured by the handlebar unit.
  • a link unit according to the invention can preferably also be produced by means of a forming method and a form fit produced between the node unit 2 and a support element 42.
  • a link unit according to the invention can preferably also be produced by means of a forming method and a form fit produced between the node unit 2 and a support element 42.
  • FIGS. 2 a and 2 b show schematically a preferred sequence of such a forming process for producing a positive fit.
  • a first support element 42a is preferably introduced into the first fastening section 24a of the node unit 2, wherein particularly preferably the first support section 24a of the node unit 2 has a first projection 29a.
  • the first attachment portion 43a of the first support member 42a forms an undercut with the projection 29a of the first support portion 24a after reshaping or expansion.
  • the form-fitting connection produced in this way can be reinforced by an adhesive or a solder connection.
  • FIG. 3a shows a preferred embodiment of the link unit according to the invention, in which a first support element 42a, a third support element 42c and a fourth support element 42d are fixed to the node unit 2.
  • Fig. 3a shows the node unit 2 according to the invention, which has four support portions 24a, b, c, d and is formed substantially hollow body-shaped.
  • the hollow body-shaped design of the nodal unit 2 serves, in particular, to increase the area moment of inertia in selected cross sections of the nodal unit 2, which in turn hold the stress values occurring in the material of the nodal unit 2 below the strengths that can be achieved by the production material of the nodal unit when the bending moments or forces are present.
  • the first and second support sections 24a, 24b preferably have, in particular, projections 29a, 29b which, as illustrated, preferably project inwards and, in particular, may have rounded geometries
  • the third and the fourth support section 24c, 24d may preferably have both an end portion facing away from the support portion 22 abutment portion, as well as a preferably funnel-shaped or bevelled geometry, which is particularly preferably designed for producing a Reibsch spaver- federation with a support member 42.
  • 3b shows a preferred further method step of producing a linkage unit according to the invention, wherein a first support element 42a is pushed through the node unit 2, wherein a first attachment section 43a of the first support element 42a is disposed opposite to the first support portion 24a of the node unit 2, and a second attachment portion 44a of the first support member 42a is disposed opposite to the second support portion 24b of the node unit 2.
  • the third and the fourth support element 42 c, 42 d are preferably rotated about a fastening axis against a respective corresponding third and fourth support portion 24 c, 24 d of the node unit 2 and finally pressed against the node unit 2, wherein a partial fusion of the material of the node unit. 2 and / or the support member 42c, 42d occurs.
  • 3c shows the link unit according to the invention after carrying out the friction welding method and the forming of the first support element 42a.
  • the first support element 42a has been particularly preferably expanded by means of a hydroforming process, wherein before and behind the node unit, in the figure left or right of the node unit 2, holding jaws or holding elements are shown, which an expansion of the first support member 42a outside the Prevent node unit 2.
  • the outer wall of the first support member 42a is preferably pressed against the inner wall of the first support portion 24a, the second support portion 24b and the base portion 22 of the node unit 2.
  • the first and second attachment portions 43a, 44a, of the first support member 42a respectively form undercuts with the projections 29a, 29b of the node unit 2.
  • the first support element 42a is secured in this way preferably against displacement relative to the node unit 2.
  • the third support element 42c and the fourth support element 42d are particularly preferably materially connected to the node unit 2, wherein the welds between the third and the fourth support portion 24c, 24d and the respectively correspondingly provided first fixing portions 43c, 43d of the third and the fourth support member 42c , 42d are shown in bold in the figure.
  • the fourth support portion 24d is preferably rotationally symmetrical about the third attachment axis B 3 formed.
  • protrusions 29 (ad) may be provided at the respective support portions 24, which are not necessarily continuous, that is, annularly formed around the respective attachment axis B. must, but for example, can be designed as teeth or noses.
  • both a rotation about the respective attachment axis B and a displacement along the respective attachment axis B relative to the support portion 24 (ad) can be achieved by a positive determination of a node to be determined on the node unit support element.
  • the support sections 24 each have an outwardly facing abutment surface 242 (ad), wherein in the illustrated perspective view the second and the fourth abutment surface 242b and 242d are covered. Furthermore, a plurality of individual tooth-like inwardly or outwardly projecting abutment surfaces 242 are preferably provided on the respective support section 24.
  • At least one of the support sections 24 (ad) preferably has an inwardly-facing abutment surface 244 (ad) which serves to abut a corresponding surface of the respective attachment region 43 (ad) around a support element 42 (ad) in a form-fitting manner on the node unit 2 set.
  • the second attachment axis B 2 and the third attachment axis B 3 are preferably not collinear or aligned parallel to each other, but form an angle a, which is particularly preferably less than 180 °.
  • FIG. 5 shows a preferred embodiment of the steering unit according to the invention in side view and in the preferred second state.
  • a third support element 42c is particularly preferably curved and fixed on the third support section 24c of the node unit 2
  • a fourth support element 42d is particularly preferred as a holding region for the air spring of a commercial vehicle (ge). shown in broken lines).
  • the third support section 24c and the fourth support section 24d of the node unit 2 are preferably both offset from one another in the vertical direction and also rotated relative to one another, or angled at the node unit 2.
  • the third support element 42c has, at its end shown on the left in the figure, a holding region with which it can be fixed rotatably to, for example, the bearing block of a commercial vehicle chassis.
  • the holding region of the third support element 42c can likewise be fixed to the third support element 42c by means of a forming or friction welding process according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

L'invention concerne une unité de direction et un procédé de fabrication correspondant comprenant les étapes suivantes: utiliser une unité d'articulation (2) dans un premier état, comprenant une partie base (22) et une partie support (24); utiliser un premier élément support (42) dans un premier état, comprenant une première partie fixation (43); fixer la première partie fixation (43) à la partie support (24); mettre l'assemblage de l'unité d'articulation (2) et du premier élément support (42) dans un deuxième état, ce deuxième état étant caractérisé par une courbe transversale non linéaire au moins du premier élément support (42).
PCT/EP2013/068229 2012-09-13 2013-09-04 Unité de direction et procede de fabrication d'une unité de direction WO2014040887A1 (fr)

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DE201210216245 DE102012216245A1 (de) 2012-09-13 2012-09-13 Lenkereinheit und Verfahren zur Herstellung einer Lenkereinheit
DE102012216245.3 2012-09-13

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WO2014040887A1 true WO2014040887A1 (fr) 2014-03-20

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WO2015172936A1 (fr) * 2014-05-14 2015-11-19 Saf-Holland Gmbh Unité de direction et procede de fabrication d'une unité de direction
DE102021002349B4 (de) 2021-05-04 2024-06-06 Christopher Frey Starres Nutzfahrzeugfahrwerk für Anhänger

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DE102017101692A1 (de) * 2017-01-30 2018-04-26 Schaeffler Technologies AG & Co. KG Verfahren zur Herstellung eines Drehstabs für einen Wankstabilisator
DE102017107207A1 (de) * 2017-04-04 2018-10-04 Saf-Holland Gmbh Achssystem
DE102017112861A1 (de) * 2017-06-12 2018-12-13 Man Truck & Bus Ag Verfahren zur Herstellung eines Achskörpers
CN114045941B (zh) * 2021-11-16 2023-04-07 浙江精工钢结构集团有限公司 一种喇叭状空间曲面节点及其制作方法

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FR2822104A1 (fr) * 2001-03-15 2002-09-20 Vallourec Vitry Fixation perfectionnee d'une traverse et de bras, notamment dabs un essieu semi-rigide
FR2888559A1 (fr) * 2005-07-15 2007-01-19 Renault Sas Procede d'assemblage d'un essieu de vehicule automobile du type pourvu de bras de suspension et d'une traverse montee entre lesdits bras, et essieu correspondant
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WO2009053491A1 (fr) * 2007-10-27 2009-04-30 Schmitz Cargobull Ag Groupe d'axes pour un véhicule utilitaire et procédé pour fabriquer un groupe d'axes de ce type

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WO2015172936A1 (fr) * 2014-05-14 2015-11-19 Saf-Holland Gmbh Unité de direction et procede de fabrication d'une unité de direction
CN106457942A (zh) * 2014-05-14 2017-02-22 塞夫霍兰德有限公司 连杆单元和连杆单元的制造方法
CN106457942B (zh) * 2014-05-14 2019-01-18 塞夫霍兰德有限公司 连杆单元和连杆单元的制造方法
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DE102021002349B4 (de) 2021-05-04 2024-06-06 Christopher Frey Starres Nutzfahrzeugfahrwerk für Anhänger

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