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

Patent metadata

Field	Value
Publication number	US-10132211-B2
Application number	US-201415023813-A
Country	US
Kind code	B2
Filing date	Sep 17, 2014
Priority date	Sep 23, 2013
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

The invention relates to a rotor for a camshaft adjuster for rotation about a rotation axis. The rotor has an inner sheath and an outer sheath and at least one control vane, pointing at least substantially radially away from the rotation axis, having a first control vane side and a second control vane side. The rotor furthermore has a first liquid channel system and a second liquid channel system, wherein the first liquid channel system opens in a first liquid channel opening and the second liquid channel system opens in a second liquid channel opening. The rotor comprises: a first sintered joining part, a second sintered joining part which is joined to the first sintered joining part and an insert part which is inserted in an intermediate chamber which 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 invention further relates to a parts set and to a method for producing a joined component.

First claim

The invention claimed is:

1. A rotor for a camshaft adjuster for rotation about a rotational axis, the rotor comprising:
an inner shell;
an outer shell;
at least one control vane which points at least substantially radially away from the rotational axis; and
at least a first fluid duct system and a second fluid duct system, the first fluid duct system opening into the outer shell in a first fluid duct opening and the second fluid duct system opening into the outer shell in a second fluid duct opening for the adjustable pressure loading of a first control vane side and a second control vane side of the at least one control vane by one or more pressure fluids which are conducted through the first fluid duct system and the second fluid duct system;
wherein the rotor further comprises a first sinter-joined part, a second sinter-joined part which is joined to the first sinter-joined part, and an insert part which is inserted into an intermediate space which is formed by at least one of a first recess of the first sinter-joined part and a second recess of the second sinter-joined part;
wherein the first recess is a first axial depression and the second recess is a second axial depression and wherein, in its radial extent, the insert part separates the first axial depression in the axial direction completely from the second axial depression in order to separate the first fluid duct system from the second fluid duct system.

2. The rotor as claimed in claim 1 , wherein the first axial depression is configured as a first groove which runs around the rotational axis at least partially, is connected via a first radial duct to the first fluid duct opening, and, as first pressure fluid distributor, forms at least one part of the first fluid duct system, and/or
wherein the second axial depression is configured as a second groove which runs around the rotational axis at least partially, is connected via a second radial duct to the second fluid duct opening, and, as second pressure fluid distributor, forms at least one part of the second fluid duct system.

3. The rotor as claimed in claim 2 , wherein the insert part has at least one first undercut in its radial extent which, starting from a first end of the axial extent of the insert part, assumes a part region of the axial extent of the insert part, and in that the insert part has at least one second undercut in its radial extent, which second undercut, starting from the opposite end of the axial extent of the insert part to the first end, assumes a part region of the axial extent of the insert part, the first undercut and the second undercut 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 and the second axial depression to at least the second radial duct in order to form the second fluid duct system.

4. The rotor as claimed in claim 1 , wherein the first fluid duct opening faces a first control vane side of the at least one control vane and the second fluid duct opening faces a second control vane side of the at least one control vane.

5. A method for producing a rotor for a camshaft adjuster for rotation about a rotational axis in which the rotor includes an inner shell, an outer shell, and at least one control vane which points at least substantially radially away from the rotational axis and in which the rotor has at least a first fluid duct system and a second fluid duct system, the first fluid duct system opening into the outer shell in a first fluid duct opening and the second fluid duct system opening into the outer shell in a second fluid duct opening for the adjustable pressure loading of a first control vane side and a second control vane side of the at least one control vane by one or more pressure fluids which are conducted through the first fluid duct system and the second fluid duct system, and the joining of the sintered component comprises:
inserting of at least one insert part into an intermediate space which is formed by at least one of a first recess of a first sinter-joined part and a second recess of a second sinter-joined part,
joining of the first sinter-joined part and the second sinter-joined part,
joining of the insert part to at least one of the first sinter-joined part and the second sinter-joined part;
wherein the first recess is a first axial depression and the second recess is a second axial depression and wherein, in its radial extent, the insert part separates the first axial depression in the axial direction completely from the second axial depression in order to separate the first fluid duct system from the second fluid duct system.

6. The method as claimed in claim 5 , wherein a radial final dimension of the insert part and/or an axial final dimension of the insert part are/is brought about by way of the joining of the insert part, by pressure which acts on the insert part by way of at least one of the first sinter-joined part and the second sinter-joined part.

7. The method as claimed in claim 5 , wherein the first recess is cylindrical over a region of the axial extent, and wherein the insert part is joined to both of the first sinter-joined part and the second sinter-joined part.

Assignees

• Gkn Sinter Metals Engineering Gmbh
• Schaeffler Technologies Ag

Inventors

• Schmitt Rainer
• Casellas Antonio
• Ziegler Kerstin
• Bösel Christian
• Stollberger Uwe

Classifications

• F01L1/3442 Primary

  using hydraulic chambers with variable volume to transmit the rotating force · CPC title

• F02D41/2464

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• F02D41/2432

  Methods of calibration · CPC title

• F02D2041/2058

  using information of the actual current value · CPC title

• H01F7/18

  Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings · CPC title