Abstract: A method without a calibration step produces a camshaft adjuster including a stator, a rotor rotatable relative thereto and a control valve, wherein the rotor and/or the stator is or are produced according to a powder-metallurgical process, wherein the stator in the region of a fitting surface for contacting the camshaft and/or the rotor in the region of a fitting surface for contacting the camshaft and/or in the region of a fitting surface for contacting the control valve and/or the control valve in the region of a sealing surface is or are produced having a tolerance so that a clearance fit with a maximum clearance of 100 ?m is formed between the fitting surface for the camshaft and the camshaft and/or between the fitting surface for contacting the sealing surface of the control valve and the sealing surface of the control valve.

Abstract: A method for connecting a first component to a second component to form an assembly forms a press fit connection between the first component and the second component, for which purpose the second component is produced having an annular component section. A recess is formed, in which the first component is at least partially arranged. At least the annular component section of the second component is produced as a sintered component and has net shape or near net shape quality at least in the region of the recess.

Abstract: A camshaft adjuster is produced that includes a stator and a rotor, which is rotatable relative to the stator, wherein the stator and the rotor are produced with first planar surfaces on a first end face and with second planar surfaces on a second end face, which is formed to be opposite the first end face when viewed in an axial direction and wherein the rotor and/or the stator is or are produced according to a powder-metallurgical method, The first planar surfaces and the second planar surfaces of the stator and the rotor are ground or finished, and the lateral surface of the stator and the lateral surface of the rotor are left uncalibrated.

Abstract: A method for connecting a first component to a second component to form an assembly forms a press fit connection between the first component and the second component, for which purpose the second component is produced having an annular component section. A recess is formed, in which the first component is at least partially arranged. At least the annular component section of the second component is produced as a sintered component and has net shape or near net shape quality at least in the region of the recess.

Abstract: A camshaft adjuster is produced that includes a stator and a rotor, which is rotatable relative to the stator, wherein the stator and the rotor are produced with first planar surfaces on a first end face and with second planar surfaces on a second end face, which is formed to be opposite the first end face when viewed in an axial direction and wherein the rotor and/or the stator is or are produced according to a powder-metallurgical method, The first planar surfaces and the second planar surfaces of the stator and the rotor are ground or finished, and the lateral surface of the stator and the lateral surface of the rotor are left uncalibrated.

Abstract: A camshaft adjuster is produced that includes a stator and a rotor, which is rotatable relative to the stator, wherein the stator and the rotor are produced with first planar surfaces on a first end face and with second planar surfaces on a second end face, which is formed to be opposite the first end face when viewed in an axial direction; wherein the rotor and/or the stator is produced according to a powder-metallurgical method, wherein the first planar surfaces or the second planar surfaces of the stator and the rotor are ground or finished, and the respective other planar surfaces of the first and second planar surfaces of the stator and the rotor are calibrated and left unground.

Abstract: A method without a calibration step produces a camshaft adjuster including a stator, a rotor rotatable relative thereto and a control valve, wherein the rotor and/or the stator is or are produced according to a powder-metallurgical process, wherein the stator in the region of a fitting surface for contacting the camshaft and/or the rotor in the region of a fitting surface for contacting the camshaft and/or in the region of a fitting surface for contacting the control valve and/or the control valve in the region of a sealing surface is or are produced having a tolerance so that a clearance fit with a maximum clearance of 100 ?m is formed between the fitting surface for the camshaft and the camshaft and/or between the fitting surface for contacting the sealing surface of the control valve and the sealing surface of the control valve.

Abstract: According to a method for the surface compaction and calibration of a sintered component, the sintered component runs along an axis through a plurality of die sections of a die, the inner diameter of which decreases in pressing direction and wherein the individual die sections are arranged such that a following die section of the plurality of die sections directly adjoins the corresponding die section which precedes it in pressing direction, and after the surface compaction at the last die section with decreasing inner diameter there is a relaxation of the sintered component in a relief section directly adjoining the last die section, which relief section has a greater diameter than the immediately preceding last die section of the die section with a decreasing inner diameter. The sintered component is calibrated in the relief section, whereby the inner contour of the relief section corresponds with the intended contour with the nominal dimensions of the sintered component.

Abstract: The invention relates to a method for producing a sintered gear comprising a gear body on which at least one elastomer element is arranged, according to which a green compact is produced by pressing a powder, the green compact is sintered into a gear body and is hardened by carburization and subsequent quenching or sinter-hardening and subsequent quenching with a gas and afterwards the at least one elastomer element is vulcanized onto the gear body.

Abstract: A toothed wheel includes a hub part, a web part radially adjoining it and a toothed crown carried by the web part, wherein several kidney-shaped openings separated from one another by webs are formed in the web part. The kidney-shaped openings are disposed in several rows formed radially one above the other.

Abstract: The invention relates to a method for production of a sintered component (2), comprising the steps: making available an iron-based powder having chromium; filling the powder into a powder press; pressing the powder to form a green compact; sintering the green compact to form the sintered component (2); post-compacting the sintered component (2); hardening the sintered component (2).

Abstract: The invention relates to a method for producing a toothed sintered component (1) according to which a green compact with a bearing mount (10) is pressed from a powder, the green compact is sintered and hardened and then at least one sliding bearing element is inserted into the bearing mount (10). The sliding bearing element is inserted into the bearing mount (10), which has a sintered-smooth surface (14), wherein a multi-layered sliding bearing element (11) is used as the sliding bearing element.

Abstract: A bearing cover for a split bearing arrangement includes a stiffening element between threaded bores for receiving threaded bolts in order to connect the bearing cover to a bearing block. Provided between two clamping surfaces is a first radially inner bearing support surface having an at least approximately arcuate cross-section as viewed in the axial direction. Adjoining the bearing support surface and following the cross-sectional contour of the bearing support surface, a reinforcing web is provided on the stiffening element which has a varying height as viewed perpendicular to the bearing support surface, and the tallest height is disposed in the region of the half angular span of the bearing support surface.

Abstract: The invention relates to a bearing arrangement (1) comprising a bearing cover (3) and a bearing block (2) fitting onto the latter, which bearing block in the area of the bearing cover (3) comprises a recess (9) in which the bearing cover (3) can be arranged and which comprises vertical deformation elements (15) with a longitudinal extension (19), wherein the vertical deformation elements (15) have a greater degree of plastic deformability than the bearing block (2).

Abstract: A gear arrangement with a divided spur toothing includes a main gear and a gear rotatable to the latter in a circumferential direction. The main gear has a hub on which the rotatable gear is arranged. A spring element is arranged between the main gear and the rotatable gear. With the spring element, the rotatable gear is pretensioned in the circumferential direction against the main gear. A first spur toothing part of the spur toothing is formed on the main gear and a second spur toothing part of the spur toothing is formed on the rotatable gear. The first spur toothing part has a first axis of rotation and the second spur toothing part has a second axis of rotation. The second axis of rotation of the second spur toothing part is offset relative to the first axis of rotation of the first spur toothing part.

Abstract: A gear transmission stage has two intermeshing gears hardened by heat treatment. In order to improve the noise behavior, one of the two gears has a final form determined by hard fine machining and the other gear has a form which is determined by heat treatment and is close to finished contours.

Abstract: The invention relates to a bearing cover (3) for a split bearing arrangement (1). Disposed between threaded bores (10) for receiving threaded bolts in order to connect the bearing cover (3) to a bearing block (2) is a stiffening element (16). Provided between two clamping surfaces (7) is a first radially inner bearing support surface (4) having an at least approximately arcuate cross-section as viewed in the axial direction (13). Adjoining the bearing support surface (4) and following the cross-sectional contour of the bearing support surface (4), a reinforcing web (19) is provided on the stiffening element (16) which has a varying height (20) as viewed perpendicular to the bearing support surface (4), and the tallest height (20) is disposed in the region of the half angular span of the bearing support surface (4).

Abstract: The invention relates to a bearing cover (3) for a split bearing arrangement (1), which in addition to the bearing cover (3) comprises a bearing block (2), wherein the bearing cover (3) comprises clamping surfaces (7), which in the assembled state of the bearing arrangement (1) bear on counter clamping surfaces (8) of the bearing block (2), and the clamping surfaces (7) have a sinter-roughened surface at least in some areas.

Abstract: The invention relates to a bearing cover (3) for a split bearing arrangement (1) which comprises a bearing block (2) in addition to the bearing cover (3), and the bearing cover (3) has clamping surfaces (4) which lie against co-operating clamping surfaces (5) of the bearing block (2) when the bearing arrangement (1) is in the assembled state, and a first radially inner bearing support surface (12) having an at least approximately curved cross-section as viewed in the axial direction is provided between the two clamping surfaces (4). An additional surface (15) is provided between at least one of the clamping surfaces (4) and the first radially inner bearing support surface (12) which directly adjoins the first radially inner bearing support surface (12) and clamping surface (4) and which is disposed at an obtuse angle (16) to the first radially inner bearing support surface (12) and at an acute angle (17) to the clamping surface (5).

Abstract: The invention relates to a split bearing arrangement (1) with a bearing block (2) comprising counter clamping surfaces (5) and a bearing cover (3) comprising clamping surfaces (4), wherein the bearing cover (2) is connected to the bearing block (3) by means of bolt-like connecting elements mounted in bores (8) in the clamping surfaces (4) and/or comprising at least one projection (13) per clamping surface (4), which can be pushed into the counter clamping surface (5) of the bearing block (2), wherein the clamping surfaces (4) of the bearing cover (2) or the counter clamping surfaces (5) of the bearing block (2) are oriented obliquely at an angle not equal to 90° to the longitudinal extension of the connecting elements and/or the projections (13) are arranged respectively at a distance (16) of at least 150% of a maximum height (17) of the projections (19) over the clamping surfaces (4) from the bore (8) and/or a side wall of the bearing cover (3).