EP3049646B1 - Rotor for a camshaft adjuster, parts set for producing a rotor for a camshaft adjuster and method for producing a joined component, preferably a rotor for a camshaft adjuster - Google Patents

Description

The present invention relates to a rotor for a phaser for rotation about an axis of rotation. Furthermore, the present invention relates to a kit of parts for producing a rotor for a phaser. Moreover, the present invention relates to a method for producing a joined component, preferably a rotor for a camshaft adjuster.

One possible embodiment of a camshaft adjuster for an internal combustion engine comprises a rotor and a stator interacting with the rotor. In one embodiment, the rotor can be connected to a camshaft of the internal combustion engine. The rotor has at least one, advantageously at least two, radially outwardly pointing control vanes, while the stator surrounding the rotor has at least one radially and centrally oriented inwardly oriented stator pole. Between the control vanes and the stator poles forming fluid chambers are acted upon by fluid channel systems of the rotor with a pressurized fluid, wherein the rotor occupies a first or a second circumferential direction upon application corresponding to the pressurized chamber, whereby the intended adjustment of the camshaft is effected. The invention relates to a rotor for a camshaft adjuster, for example for a camshaft adjuster of the type described above.

Of the DE 10 2011 117 856 A1 shows an embodiment of a multi-part, joined rotor in hydraulic camshaft adjusters with joining gaskets. For the introduction of fluid channel systems extending as advantageously as possible, a rotor for a camshaft adjuster made of two partial bodies is proposed, each of the partial bodies having open fluid channel parts in its joining surface which form fluid channels when the first partial body is joined to the second partial body. In order to effect a sealing of the fluid channels and thereby of the entire rotor with respect to the environment in such a way that the fluid channels remain tight with respect to the pressure fluids running in them, the joining surface has at least one sealing means, which is formed such that the fluid channels are sealed. This is intended to create a defined contact with each other of the joined surfaces and a separation of the various fluid channels within the rotor from each other and the fluid channel systems with respect to one be effected outside. The sealing means may in this case be designed, for example, as elevations.

A manufacture of a rotor for a camshaft adjuster of two partial bodies, for example according to the in the DE 10 2011 117 856 A1 described manner, is advantageous for enabling introduction of channels for a sealing fluid, which have complex courses, which would be limited in a mere machining of a one-piece rotor in its complexity. But even in the two-part design of the rotor, the leadership of the fluids is limited to such courses, which are mapped in a joint surface. As a consequence, in particular also in the positioning of the camshaft adjusting device within an engine and thereby also a positioning of the camshaft are subject to restrictions.

The invention is therefore based on the object to provide a rotor for a camshaft adjuster, which is improved in the possibilities of the course of the leadership of a pressurized fluid.

The object is achieved with a rotor for a camshaft adjuster with the features of claim 1, with a kit of parts for producing a rotor for a camshaft adjuster with the features of claim 5 and with a method for producing a joined component, preferably a rotor for a camshaft adjuster , Further advantageous embodiments and developments will become apparent from the following description. One or more features of the claims, the description as well as the figures may be linked with one or more features thereof to further embodiments of the invention. In particular, one or more features of the independent claims may be replaced by one or more other features of the description and / or figures. The proposed claims are to be construed only as a draft to formulate the subject matter without, however, limiting it.

There is provided a rotor for a phaser for rotation about a rotation axis. The rotor has an inner casing, an outer casing, at least one control vane at least substantially radially away from the outer casing, and at least one first fluid channel system and a second fluid channel system. The first fluid channel system opens into a first fluid channel opening. The second fluid channel system opens into a second fluid channel opening. The first fluid channel system opens into the first fluid channel opening and the second fluid channel system open in the second fluid channel opening for adjustably pressurizing the first control wing side and the second control wing side by means of one or more pressure fluids, which are passed through the first fluid channel system and the second fluid channel system. The first fluid channel opening preferably faces a first control wing side of the at least one control wing. Likewise, the second fluid channel opening preferably also faces a second control wing side of the at least one control wing.

• ein erstes Sinterfügeteil,
• ein zweites Sinterfügeteil, das mit dem ersten Sinterfügeteil gefügt ist sowie
• ein Einsatzteil, das in einem Zwischenraum eingefügt ist. Der Zwischenraum ist durch wenigstens eine einer ersten Ausnehmung des ersten Sinterfügeteils und einer zweiten Ausnehmung des zweiten Sinterfügeteils gebildet.

The rotor includes:

• a first sintered joining part,
• a second sintered joining part joined to the first sintered joining part, and
• an insert inserted in a space. The intermediate space is formed by at least one of a first recess of the first sintered joining part and a second recess of the second sintered joining part.

The term rotor refers to the fact that the rotor is a component intended for rotational movement about an axis of rotation. Here, a rotational movement may be sufficient only by a few degrees. It can be provided, for example, that the rotor is a rotationally symmetric component or an essentially rotationally symmetrical component. However, it can also be provided in another embodiment that it is a non-rotationally symmetric component, in this case, the term of the rotation axis refers only to that axis about which a rotational movement is provided. The term rotation axis therefore does not necessarily imply a required rotational symmetry, but merely refers to the fact that the rotor is intended for rotation.

The terms of the first fluid channel system and the second fluid channel system refer to a fluid channel system being an ensemble of channels extending from an area of the inner shell to an opening. It can be provided, for example, that the first fluid channel system extends from the inner jacket to the outer jacket. In this case, the first fluid channel system should open in the first fluid channel opening. A fluid channel system may for example consist of a fluid channel, but it can also be provided, for example, that a fluid channel system may have a plurality of fluid channels or other fluid-conducting geometries such as grooves, undercuts or the like, which merge into one another.

The control wing is a wing that points essentially radially from the axis of rotation. The explanation of the essentially radially pointing away from the axis of rotation orientation here refers to the fact that the control wing may for example have an axis of symmetry which intersects the axis of rotation.

In a special embodiment, the control wing on an axis of symmetry, which includes the axis of rotation. This results in the advantage of a high rotational symmetry, which results in a particular suitability for a rotor provided for rotation.

But even deviations from a symmetrical configuration, for example by beveled design of one or more control wing sides or, for example, in an angling of the control wing in wegweisendem from the axis of rotation course can be provided. By such a construction, the operation is ensured that a rotation of the rotor about its axis of rotation is effected by means of a pressure generated by a pressure fluid and depending on the selected control wing side, the direction of rotation is changed.

Depending on the design of the camshaft adjuster, in principle the presence of a control vane may be sufficient for the basic function of the rotor for a camshaft adjuster.

In a preferred embodiment, however, the rotor has more than one control wing. In a particularly preferred embodiment, the control wing on at least three control wings.

In a particularly preferred embodiment, the control vanes are arranged in a uniform angular distribution, so that, for example, in the presence of N control wings two next control vanes would be brought into coincidence by rotation of the rotor by 360 / N degrees, where N is an integer which is at least 2 is.

A fluid channel opening is in accordance with the understanding of the embodiment explained above in such cases a first control wing side of the at least one control wing, if the first control wing side is the next surface associated with a control wing.

The term of the sintered joining part refers in particular to the fact that the sintered joining part is a component which has already undergone a sintering process. It is preferably provided that no further sintering of the sintered joining part is required any more. In other embodiments, however, it may be provided, for example, that still further sintering of the sintered part is provided and / or required. Likewise, further heat treatments may be provided and / or required.

The concept of the sintered joining part further comprises that the component is intended for joining to a sintered part by means of joining with at least one further sintered joining part.

A sintered joining part may in this case have, for example, a sintered metal, a sintered steel and / or a sintered ceramic.

The insert part can be a sintered part in a preferred embodiment. In the embodiment of the insert as a sintered part results in particular the advantage that a high flexibility in the design of the insert part possible and a machining is not necessarily required.

In another embodiment, however, it may also be provided, for example, that the insert part is not a sintered part but a sintered part, for example a cast or machined component, for example a metal, one Metal alloy or a ceramic. Likewise, for example, an embodiment of the insert part may be provided from a plastic.

The insert is inserted in a gap which is formed by at least a first recess of the first sintered joining part and a second recess of the second sintered joining part. In this case, for example, it may be provided that the first sintered joining part has a recess and that the second sintered joining part has a recess, wherein in the joined state of the rotor, a gap is formed from the first recess and the second recess. In this case, it can be provided, for example, that the insert part at least partially fills the intermediate space. Also may be provided, for example, that the gap is completely filled. The term recess here refers to the fact that, for example, a depression can be formed in at least one of the sintered joining parts. However, the term recess may also mean, for example, a continuous recess, for example a hole, which is continuous through the sintered joining part. In such a case, the notion of inserting the insert into the gap would be particularly related to the insert being at least partially encompassed by the first sintered joining part and at least partially by the second sintered joining part and, in particular, by the first sintered joining part and / or the second sintered joining part is enclosed, but not necessarily completely enclosed by this first sintered joining part and the second sintered joining part.

It can be provided that the first sintered joining part, the second sintered joining part and / or the insert part are joined to one another in a force-fitting, positive-locking, frictionally engaged or other manner.

In an advantageous embodiment of the rotor can be provided, for example, that the first Sinterfügeteil has a first axial recess which is formed as at least partially the axis of rotation circumferential first groove. The first groove is connected to the first fluid channel opening via a first radial channel. The first groove and / or the first radial channel thus form at least a part of the first fluid channel system. The first groove acts as the first pressure fluid distributor. Characterized in that the first axial recess is formed as a rotation axis at least partially circumferential first groove, there is the advantage that a pressure fluid, the rotation axis can be distributed circumferentially and in circulation of the first groove can be a distribution of the pressurized fluid, thus the first groove is designed as a pressure fluid distributor. From the formation of the pressure fluid distributor as at least partially the axis of rotation encircling groove before vorzut as completely the axis of rotation circumferential groove has the advantage that the pressurized fluid can be distributed to different positions of the circulation of the axis of rotation. This results in the consequence of a greater flexibility in the positioning of the rotor and thus in the positioning of the camshaft adjuster within the engine.

In a preferred embodiment of the rotor, the first axial recess is formed as a first groove which preferably completely surrounds the axis of rotation.

The term depression here refers to the fact that the recess is a recess which is located within the first sintered joining part. For example, it can be provided that it is an axial recess which is located in an area which extends beyond the extension of the insert part in the axial direction within the first sintered joining part.

It can also be provided that the second sintered joining part has a second axial recess, which is formed as at least partially, preferably completely, the second axis running around the axis of rotation. The second axial recess is connected to the second fluid channel opening via a second radial channel. The second axial recess forms as a second pressure fluid distributor at least a part of the second fluid channel system.

The term radial passage refers to a channel which extends from the interior of the rotor to a fluid channel opening located on the outer jacket of the rotor. The radial channel thus has at least one radial component. The radial channel may be a channel running along a radial direction, which may be formed as a bore, for example. However, it can also be provided that the radial channel has deviating direction components from this radial direction. Thus, for example, be provided that the radial channel is formed in a meandering course.

• dem ersten Sinterfügeteil und/oder dem zweiten Sinterfügeteil,
• einem zwischen dem Einsatzteil und dem ersten Sinterfügeteil und/oder dem zweiten Sinterfügeteil befindlichen weiteren Bauteil
  auf. Durch den bündigen Abschluss zwischen dem Einsatzteil mit einem oder mehreren der Sinterfügeteile und/oder einem weiteren Bauteil, das zwischen dem Einsatzteil und dem ersten Sinterfügeteil und/oder dem zweiten Sinterfügeteil befindlich ist, wird bewirkt, dass in einer axialen Richtung des Einsatzteils keine Verbindung zwischen der ersten axialen Vertiefung und der zweiten axialen Vertiefung für ein Druckfluid hergestellt ist, welches in dem ersten Fluidkanalsystem und/oder dem zweiten Fluidkanalsystem befindlich ist. Eine solche Trennung der ersten axialen Vertiefung von der zweiten axialen Vertiefung durch konstruktives Ermöglichen einer bündigen Positionierung des Einsatzteils mit dem ersten Sinterfügeteil und/oder dem zweiten Sinterfügeteil trägt hierbei zu einer Trennung des ersten Fluidkanalsystem von dem zweiten Fluidkanalsystem bei. Hierdurch ergibt sich der Vorteil, dass innerhalb des Rotors zwei voneinander getrennte Fluidkanalsysteme vorliegen, so dass für zwei gewünschte Drehrichtungen des Rotors jeweils ein Fluidkanalsystem zur Leitung des Druckfluids bereitgestellt ist.

In a further embodiment of the rotor, it can be provided, for example, that the insert part in its radial extent completely separates the first axial recess in the axial direction from the second axial recess for separating the first fluid channel system from the second fluid channel system. In its radial extent, the insert thus at each point of its circulation at least one point of its axial extent a flush or at least substantially flush ending with one or more

• the first sintered joining part and / or the second sintered joining part,
• a further component located between the insert part and the first sintered joining part and / or the second sintered joining part
  on. The flush termination between the insert part with one or more of the sintered joining parts and / or another component located between the insert part and the first sintered joining part and / or the second sintered joining part causes no connection in an axial direction of the insert part the first axial recess and the second axial recess for a pressurized fluid is produced, which is located in the first fluid channel system and / or the second fluid channel system. Such a separation of the first axial recess from the second axial recess by structurally enabling a flush positioning of the insert part with the first sintered joining part and / or the second sintered joining part contributes to a separation of the first fluid channel system from the second fluid channel system. This results in the advantage that two separate fluid channel systems are present within the rotor, so that in each case a fluid channel system for guiding the pressurized fluid is provided for two desired rotational directions of the rotor.

In a further advantageous embodiment, for example, be provided that the insert has at least a first undercut in its radial extent. The first undercut occupies a portion of the axial extent of the insert from a first end of the axial extent of the insert. The insert further has at least one second undercut in its radial extent. The second undercut assumes a portion of the axial extent of the insert from the end of the axial extent of the insert located opposite the first end of the insert. The first undercut partially revolves around the axis of rotation. The second undercut also partially revolves around the axis of rotation. The first undercut and the second undercut are alternately arranged, thereby causing a connection of the first axial recess and a connection of the second axial recess respectively with a radial channel.

The aim of the alternating connection of the first axial recess and the second axial recess by means of alternately formed on the insert part undercuts, so for example by means of the alternating arrangement of the first undercut and the second undercut, the first axial recess by means of the first undercut with the first radial channel for formation connected to the first fluid channel system and the second undercut connected to the second axial recess with at least the second radial channel for binding the second fluid channel system. The connection of the first undercut with the first of the first undercut with the first axial recess and the first radial channel and the connection of the second undercut with the second axial recess and the second radial channel are arranged alternately.

It may further be provided that a number of more than two undercuts is formed on the insert part. In a particularly preferred embodiment, it may thus be provided, for example, that a number of undercuts double corresponds to a number of control wings. A number of undercuts, which corresponds to twice the number of control wings, in particular has the advantage that for each of the existing control vanes in each case the first control wing side and the second control wing side can be acted upon with a pressurized fluid. For this purpose, for a first control blade of the rotor, the first control blade side, starting from the first undercut, can be pressurized with a first pressurized fluid and the second side can be pressurized with a second pressurized fluid starting from the second undercut. Further control vanes of the rotor can be pressurized alternately in the circulation of the insert part undercuts on one control wing side with the first pressurized fluid and on another control vane side with the second pressurized fluid.

Another aspect of the invention, which may be pursued independently as well as in combination with the other aspects of the invention, relates to a parts set for manufacturing a rotor for a phaser.

• ein erstes Sinterfügeteil,
• ein zweites Sinterfügeteil,
• ein Einsatzteil zum Einsetzen in eine Ausnehmung, wobei die Ausnehmung wenigstens durch eine erste Ausnehmung des ersten Sinterfügeteils und/oder eine zweite Ausnehmung des zweiten Sinterfügeteils gebildet ist.

This is a parts set for producing a rotor for a camshaft adjuster, wherein the rotor has at least a first fluid channel system and a second fluid channel system. The first fluid channel system and the second fluid channel system have separately formed fluid guides. The parts set includes at least:

• a first sintered joining part,
• a second sintered joining part,
• an insert for insertion into a recess, wherein the recess is formed at least by a first recess of the first sintered joining part and / or a second recess of the second sintered joining part.

The separately present fluid guides of the first fluid channel system and the second fluid channel system is to be understood in this case to the effect that there is a separate fluid guide in the camshaft adjuster in the assembled state. For example, it may be provided that a fluid channel system has a first groove and a second groove introduced into the insert part, wherein the first groove and the second groove are separated from each other only after an application of the rotor to the camshaft. Such a case is, as understood herein, encompassed by the terminology of the separate fluid guides.

In a preferred embodiment of the parts set can be provided, for example, that the first recess and / or the second recess is cylindrical at least over a portion of its axial extent. In a preferred embodiment, it can be provided that the first recess and / or the second recess is circular-cylindrical at least over a region of its axial extension. An embodiment of the first recess and / or the second recess as a circular-cylindrical recesses in particular also manufacturing advantages.

In a further embodiment of the parts set can be provided, for example, that at least over a region of the axial extent of the first Sinterfügeteils a radial extent of the first recess at least substantially corresponds to a radial extent of the insert part over a first axial section. This has the effect that an at least substantially flush insertion of the insert part into the first recess can be brought about.

This causes an at least substantially flush insertion of the insert is effected in the second recess. The terms of the radial extent over a first axial portion and the radial extent over a second axial portion should be understood to mean that at each position of the outer shell of the insert at least at a portion of the axial portion, the entire radial extent of the entire recess flush by means of Insert part is completed, so that takes place in a axial direction after joining the first Sinterfügeteils and the second Sinterfügeteils with the insert part, a separation of the first recess of the second recess and thereby two independently present fluid channel systems by separation of the first axial recess and the second axial depression can be made of each other.

In a further embodiment of the parts set can be provided, for example, that the first recess has a first radial surface which is formed as a first seat surface for a region of a first end side of the insert part. The region of the first end face of the insert part is adjacent after positioning of the insert part on the first seat surface of a first axial recess of the first sintered joining part.

Also, in another embodiment, for example, be provided that the second recess has a second radial surface which is formed as a second seat surface for a portion of a second end face of the insert part. The region of the second end face of the insert part is adjacent to the second axial recess of the second sintered joining part after positioning of the insert part on the second seat surface.

The term of the seat here refers to a surface which is formed, for example, as an area with at least partially smaller radial recess than the radial extent of the first recess and the insert part. In this case, the first seat surface and / or the second seat surface may be located as being in a parallel plane of an end face of the first sintered joining part and / or as being in a parallel plane of an end face of the second sintered joining part. This results in particular in a shape of the insert with at least substantially cylindrical configuration, the advantage that a parallel positioning of the end faces of the rotor and the end faces of the insert is present, whereby a cost-optimized design implementation of the parts set is achieved.

Preferably, a distance of the first seat surface from the second seat surface in the joined state of the first sintered joining part and the second sintered joining part to a rotor is corresponding to an axial extent of the insert part. This results in the advantage that an axial positioning of the insert within the recess is considerably simplified.

However, it can also be provided that a distance of the first seat from the second seat is greater than an axial extent of the insert part, wherein an axial extension of the insert part, for example by appropriately additionally inserted spacers or for example by effecting a press fit and / or friction fit of the insert can be effected within a recess of the first sintered joining part and / or the second sintered joining part.

In a further embodiment of the parts set can be provided, for example, that the insert part has in its radial extent at least a first radial recess, which is formed as a first undercut. As a result, a first fluid space is at least partially formed, which is arranged at least partially adjacent to the first axial recess.

Furthermore, it can be provided, for example, that the insert part has in its radial extent at least one second radial recess which is formed as a second undercut for forming a second fluid space, which is at least partially adjacent to the second axial recess.

In a further embodiment of the parts set, it can be provided, for example, that the insert part between the radial recesses has an axial web for at least substantially flush termination with an inner jacket of the first sintered joining part and / or with an inner jacket of the second sintered joining part for separating the first fluid chamber from the second fluid space. In this case, the term of the axial web designates a region of the insert part which, in the assembled state of the rotor, is positioned at least substantially flush with the inner jacket of the first and / or with the inner jacket of the second and at least one directional component which is at least one directional component of the axis of rotation of the rotor is partially parallel, so that extends at least along a portion of the axial ridge this in a direction from a first end side of the insert part to a second end side of the insert part.

An axial extent of the axial web should in this case correspond to at least one axial distance of the first undercut and the second undercut in order to allow the separation of the first undercut from the second undercut. By the axial web in cooperation with the inner shell of the first sintered joining part and / or in cooperation with the inner shell of the second sintered joining part, the space formed by the first undercut is separated from the space formed by the second undercut so that leakage between the two spaces is not or sufficiently low.

A further embodiment of the parts set can provide, for example, that the first sintered joining part has at least one first radial channel for forming the first fluid channel system by means of a connection of the first fluid space to the outer jacket. Furthermore, for example, an embodiment of a parts set may be provided in which the second sintered joining part has at least one second radial channel for forming the first fluid channel system by means of a connection of the second fluid space to the outer jacket.

In a further advantageous embodiment of the parts set, it can be provided, for example, that the first sintered joining part and the second sintered joining part have the same shape. An embodiment of the first sintered joining part and of the second sintered joining part having an identical shape has the particular advantage that the manufacturing outlay for producing the parts set is reduced because the number of different components is reduced.

Another aspect of the invention, which may be pursued independently as well as in combination with the other aspects of the invention, relates to a method of making a joined component. Preferably, this idea relates to a method for producing a joined component, which is designed as a rotor for a phaser.

The component, which is joined by means of the method, has at least a first fluid channel system and a second fluid channel system. The first fluid channel system and the second fluid channel system have a separate fluid guide.

• Einsetzen zumindest eines Einsatzteils in eine erste Ausnehmung eines ersten Sinterfügeteils,
• Fügen der Sinterfügeteile,
• Fügen des Einsatzteils mit wenigstens einem des ersten Sinterfügeteils und des zweiten Sinterfügeteils.

The joining of the sintered component comprises at least:

• Inserting at least one insert part into a first recess of a first sintered joining part,
• Joining the sintered joining parts,
• Joining the insert part with at least one of the first sintered joining part and the second sintered joining part.

Preferably, the first recess of the first sintered joining part is cylindrical at least over a region of its axial extent.

Also preferably, with the joining of the sintered joining parts, the insert part is inserted into a second recess of a second sintered joining part.

The insert can be joined by inserting the insert with the first sintered joining part, the second sintered joining part, the first and the second sintered joining part and / or with other components, for example non-positively, frictionally, cohesively and / or in press fit.

In a special embodiment of the method, it can be provided, for example, that a radial final dimension of the insert part is brought about by means of a pressure acting on the insert part, which is brought about by at least one of the first sintered joining part and the second sintered joining part. The radial final dimension of the insert part can hereby be brought about in direct contact of the first sintered joining part and / or of the second sintered joining part on the insert part. However, it can also be provided that a further component is arranged between the insert part and the first sintered joining part and / or the second sintered joining part.

In a further embodiment of the method, it can be provided, for example, that an axial final dimension of the insert part is brought about by means of a pressure acting on the insert part, which is brought about at least by the first sintered joining part and / or the second sintered joining part.

In this case, bringing about a radial final dimension and / or an axial final dimension of the insert part with the joining has the particular advantage that it is not necessary to bring about a final dimension of the insert part into the first sintered joining part and / or the second sintered joining part, so that the number of is reduced to be performed manufacturing steps. A further advantage, which results from bringing about a final dimension of the insert part with pressure brought about by the first sintered joining part and / or the second sintered joining part, is the thereby facilitating a greater tolerance of the manufactured insert parts, so that the effort required for the production of the insert parts can be further reduced.

It may be provided that a parts set is used to add a rotor for a phaser. A use of a parts set should be provided in particular for joining to a rotor with at least two separate fluid channel systems.

Further advantageous embodiments and developments will become apparent from the following figures. However, the details and features of the figures are not limited to these. Rather, one or more features having one or more features from the above description may be linked to new designs. In particular, the following statements do not serve as a limitation of the respective scope, but explain individual features and their possible interaction with each other.

Fig. 1:

Darstellung einer beispielhaften Ausgestaltung eines Rotors für einen Nockenwellenversteller im Schnitt,

Fig. 2:

eine weitere beispielhafte Darstellung eines Sinterfügeteils mit eingefügtem Einsatzteil,

Fig. 3:

eine weitere beispielhafte Darstellung eines Rotors für einen Nockenwellenversteller in einer Schrägansicht,

Fig. 4:

eine weitere beispielhafte Darstellung eines Rotors für einen Nockenwellenversteller in Explosionsdarstellung,

Fig. 5:

eine weitere beispielhafte Darstellung eines Schnitts eines Rotors eines Nockenwellenverstellers in Schrägdarstellung.

Show it:

Fig. 1:

Representation of an exemplary embodiment of a rotor for a camshaft adjuster in section,

Fig. 2:

a further exemplary representation of a sintered joining part with inserted insert part,

3:

a further exemplary representation of a rotor for a phaser in an oblique view,

4:

a further exemplary representation of a rotor for a camshaft adjuster in exploded view,

Fig. 5:

a further exemplary representation of a section of a rotor of a camshaft adjuster in an oblique view.

Fig. 1 an embodiment of a rotor 1 for a phaser can be seen in cross section. The rotor 1 in this case has a first sintered joining part 12 and a second sintered joining part 13, which are joined together. The first sintered joining part 12 has a first recess 21, the second sintered joining part 13 has a second recess 22, the first recess 21 having a first seating surface 23 and the second recess 22 having a second seating surface 24 for an insert part 14. The insert member 14 is inserted in a space formed by the first recess 21 and the second recess 22.

Starting from the first recess 21, the rotor 1 in the region of the first sintered joining part 12 has a first axial recess 15, wherein the first axial recess 15 is formed after the rotor 1 is placed on the camshaft 25 as a completely circumferential groove. The insert 14 has a first undercut 17, which in its radial undercut overhangs the radial extent of the first seat 23 of the insert 14 on the first Sinterfügeteil 12 and thereby forms a compound formed by the first undercut 17 space with the first axial recess 15 , The first completely circumferential groove, as which the first axial recess 15 is formed, thereby acts as the first pressure fluid distributor. Furthermore, the Insert 14 on a second undercut 18, which projects beyond the radial extent of the second seat 24 of the insert 14 on the second Sinterfügeteil 13 in its radial undercut and thereby a compound of the second completely circumferential groove formed second axial recess 16 to the through the second undercut 18 made room. As Fig. 1 can also be seen, via the radial passage 26, a connection from the second axial recess 16 via the second undercut 18 toward the first fluid channel opening 8 causes. The insert 14 has next to the illustrated first undercut 17 and also the Fig. 1 to be taken second undercut 18 further undercuts, wherein in the Fig. 1 to be removed embodiment of the rotor, a first half of the undercuts in each case the first Sinterfügeteil 12 facing their opening and have a second half of the undercuts in each case the second Sinterfügeteil 13 facing. The undercuts are oriented alternately in one revolution of the insert part 14 about the rotation axis 20.

Fig. 2 an embodiment of the second sintered joining part 13 with the insert part 14 can be seen, which is introduced into the second recess of the second sintered joining part 13. It's the Fig. 2 Furthermore, a first undercut 17 can be seen, which is oriented with its opening facing the first Sinterfügeteil, wherein the first Sinterfügeteil the Fig. 2 is not apparent. As a result, a connection is effected from the first axial recess via the first undercut to the second fluid channel opening 10. Furthermore, the second undercut 18 of the Fig. 2 which establishes a connection between a second axial recess of the second sintered joining part 13 and, via the radial channel 26, a first fluid channel opening 8. Furthermore is Fig. 2 can be seen that the first Sinterfügeteil 12 facing undercuts with the second Sinterfügeteil facing undercuts are arranged alternately in the circulation of the insert member 14 about the rotation axis 20 in the orientation of the opening. As a result, in each case alternately for each control wing one of the first control vane side 9 facing first fluid channel opening 8 with a second axial recess and the second control vane side 11 facing second fluid channel opening 10 connected to a first axial recess 16 so that two different directions of rotation of the rotor by pressurizing with a Pressure fluid are possible, each of the two rotational directions corresponds to a pressurization via one of the two axial depressions. In the exemplary embodiment shown, both axial recesses are provided as completely circumferential grooves. A radial distribution of the corresponding pressure fluid to the respectively provided control wing side of the control wing takes place as described above on the associated with one of the two grooves undercuts.

Fig. 3 is a the rotor 1 of Fig. 2 to take similar rotor 1, wherein Fig. 3 opposite the Fig. 2 was added to the first Sinterfügeteil 12. As a result, now the first fluid channel opening 8 in the completed manner of Fig. 3 to refer to the first control wing side 9 of the control blade 5 is oriented facing. The insert 14 is the Fig. 3 only to be seen in the inner recess of the rotor 1, which is provided for the insertion of the camshaft, for complete formation of the first groove of the first axial recess 15 and the second groove of the second axial recess 16th

Fig. 4 is the rotor of the Fig. 3 to be taken as part set 2 in an exploded view.

Fig. 5 the rotor 1 in joined state can be seen in section in an oblique view. In the sectional view of Fig. 5 Furthermore, by the solid line 27, the course of the first fluid channel system 6, comprising the second axial recess 16 formed as a second groove and, inter alia, the radial channel 26 toward the second fluid channel opening eighth

Claims (15)

1. Rotor (1) for a camshaft adjuster for rotation about a rotational axis, having an inner shell (3), an outer shell (4), at least one control vane which points at least substantially radially away from the rotational axis (20), and at least a first fluid duct system (6) and a second fluid duct system, the first fluid duct system opening into the outer shell (4) in a first fluid duct opening (8) and the second fluid duct system opening into the outer shell (4) in a second fluid duct opening (10) for the adjustable pressure loading of the first control vane side (9) and the second control vane side (11) by means of one or more pressure fluids which are conducted through the first fluid duct system (6) and the second fluid duct system (7),
   characterized in that
   the rotor (1) comprising:

   - a first sinter-joined part (12),

   - a second sinter-joined part (13) which is joined to the first sinter-joined part (12), and

   - an insert part (14) which is inserted into an intermediate space which is formed by at least one of a first recess of the first sinter-joined part (12) and a second recess of the second sinter-joined part (13).
2. Rotor (1) as claimed in claim 1, characterized

   - in that the first sinter-joined part (12) has a first axial depression (15), which is configured as a first groove which runs around the rotational axis (20) at least partially, is connected via a first radial duct to the first fluid duct opening (8) and, as first pressure fluid distributor, forms at least one part of the first fluid duct system (6),
   and/or

   - in that the second sinter-joined part (13) has a second axial depression (16) which is configured as a second groove which runs around the rotational axis (20) at least partially, is connected via a second radial duct to the second fluid duct opening (10) and, as second pressure fluid distributor, forms at least one part of the second fluid duct system (7).
3. Rotor (1) as claimed in claim 1 or as claimed in claim 2, characterized in that, in its radial extent, the insert part (14) separates the first axial depression (15) in the axial direction completely from the second axial depression (16) in order to separate the first fluid duct system (6) from the second fluid duct system (7).
4. Rotor (1) as claimed in one of the preceding claims, characterized in that the insert part (14) has at least one first undercut (17) in its radial extent which, starting from a first end of the axial extent of the insert part (14), assumes a part region of the axial extent of the insert part (14), and in that the insert part (14) has at least one second undercut (18) in its radial extent, which second undercut (18), starting from the opposite end of the axial extent of the insert part (14) to the first end, assumes a part region of the axial extent of the insert part (14), the first undercut (17) and the second undercut (18) in each case running partially around the rotational axis and being arranged in an alternating manner here for the alternating connection of the first axial depression to at least the first radial duct in order to form the first fluid duct system (6) and the second axial depression to at least the second radial duct in order to form the second fluid duct system (7).
5. Parts set (2) for producing a rotor as claimed in one of claims 1 to 4, the rotor (1) having at least a first fluid duct system (6) and a second fluid duct system (7), the first fluid duct system (6) and the second fluid duct system (7) having a fluid routing system which is present separately from one another, and the parts set (2) comprising at least:

   - a first sinter-joined part (12),

   - a second sinter-joined part (13),

   - an insert part (14) for insertion into a recess which is formed by at least one of a first recess of the first sinter-joined part (12) and a second recess of the second sinter-joined part (13).
6. Parts set (2) as claimed in claim 5, characterized in that the first recess and/or the second recess are/is of cylindrical configuration at least over a region of their/its axial extent.
7. Parts set (2) as claimed in claim 5 or as claimed in claim 6, characterized

   - in that, at least over a region of the axial extent of the first sinter-joined part (12), a radial extent of the first recess at least substantially corresponds to a radial extent of the insert part (14) over a first axial section for an at least substantially flush introduction of the insert part (14) into the first recess, and/or

   - in that, at least over a region of the axial extent of the second sinter-joined part (13), a radial extent of the second recess at least substantially corresponds to a radial extent of the insert part (14) over a second axial section for an at least substantially flush introduction of the insert part (14) into the second recess.
8. Parts set (2) as claimed in one of claims 5 to 7, characterized

   - in that the first recess has a first radial face which is configured as a first seat face for a region of a first end side of the insert part (14), which region is adjacent to a first axial depression of the first sinter-joined part (12), and/or

   - in that the second recess has a second radial face which is configured as a second seat face for a region of a second end side of the insert part (14), which region is adjacent to a second axial depression of the second sinter-joined part (13).
9. Parts set (2) as claimed in one of claims 5 to 8, characterized in that, in its radial extent, the insert part (14) has at least one first radial recess which is configured as a first undercut (17) in order to form a first fluid space in the joined state of the rotor, which first fluid space is arranged so as to adjoin the first axial depression (15) at least in regions;
   and/or in that, in its radial extent, the insert part (14) has at least one second radial recess which is configured as a second undercut (18) in order to form a second fluid space in the joined state of the rotor, which second fluid space is arranged so as to adjoin the second axial depression (16) at least in regions.
10. Parts set (2) as claimed in claim 9, characterized in that the insert part (14) has an axial web (19) between the radial recesses, for the at least substantially flush termination with an inner shell (3) of the first sinter-joined part and/or with an inner shell (3) of the second sinter-joined part in order to separate the first fluid space from the second fluid space.
11. Parts set (2) as claimed in claim 10, characterized in that the first sinter-joined part (12) has at least one first radial duct in order to form the first fluid duct system (6) by means of a connection of the first fluid space to the outer shell (4), and/or in that the second sinter-joined part (13) has at least one second radial duct in order to form the first fluid duct system (6) by means of a connection of the second fluid space to the outer shell (4).
12. Parts set (2) as claimed in one of claims 5 to 11, characterized in that the first sinter-joined part (12) and the second sinter-joined part (13) have an identical shape.
13. Method for producing a rotor as claimed in one of claims 1 to 4, the rotor (1) having at least a first fluid duct system (6) and a second fluid duct system (7), the first fluid duct system (6) and the second fluid duct system (7) having a fluid routing system which is present separately from one another, characterized in that the joining of the sintered component comprising at least:

    - insertion of at least one insert part (14) into a first recess of a first sinter-joined part (12),

    - joining of the sinter-joined parts (12, 13),

    - joining of the insert part (14) to at least one of the first sinter-joined part (12) and the second sinter-joined part (13).
14. Method as claimed in claim 13, characterized in that a radial final dimension of the insert part (14) and/or an axial final dimension of the insert part (14) are/is brought about by way of the joining of the insert part, by means of pressure which acts on the insert part (14) by way of at least one of the first sinter-joined part (12) and the second sinter-joined part (13).
15. Use of a parts set (2) as claimed in one of claims 5 to 12 for joining a rotor for a camshaft adjuster, the rotor having at least two fluid duct systems (6, 7) which are separate from one another.

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