Miba Sinter Austria Gmbh

Metaldyne International Deutschland Gmbh

Hofer Forschungs- Und Entwicklungs Gmbh

Alexander Mueller

Karl Dickinger

Helmut Pamminger

Wolfgang Siessl

Horst Roessler

Martin Ohler

Christian Kronberger

Christian Sandner

Christian Dumanski

Herbert Schmid

Helmut Buchleitner

Markus Schauer

Martin Karlsberger

Juergen Depp

Anton Kokoska

Jose Correa Neto

Robert Spitaler

Thomas Hackl

Johann Paul Hofer

Markus Hofer

Mario Mittermair

Stefan Stix

Helmut Aichinger

A device for producing a gear green compact from a powder includes a die, an upper stamp, and a lower stamp, wherein the die has at least one helical toothing on an inner lateral surface, which helical toothing extends only over a partial area of the circumference of the inner lateral surface, and which has a first helix angle, wherein, adjoining the first helical toothing in a circumferential direction, one toothed edge surface is formed on each side, both of which have a second helix angle, wherein at least one of the second helix angles of the die is unequal to the first helix angle of the helical toothing of the die.

Device for producing a gear green compact

A method for producing a sintered component, in particular an annular sintered component, with a toothing, having teeth with tooth roots, tooth tips and tooth flanks, includes the steps of pressing a powder to form a green compact, sintering the green compact, and hardening the sintered component, wherein after sintering, the tooth flanks and possibly the tooth tips are post-compacted and subsequently undergo post-processing by machining, and wherein a transition region between the tooth flanks and the tooth roots has an undercut design, and post-compaction of the tooth flanks is carried out only up to this transition region.

Method for producing a sintered component with a toothing

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 μm 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.

Method for producing a camshaft adjuster

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.

The invention relates to a swashplate () for a swashplate compressor () comprising a main swashplate body (), which is made from a sintering material, and to a method for producing the swashplate ().

Method for producing a swashplate

The invention relates to an assembly () at least comprising a first metal component () having a first surface region () and a second metal component () having a second surface region (), wherein the two surface regions () face each other, and the first and the second component () are connected cohesively together at least in a subregion of the two surface regions (), and wherein at least one of the two metal components () is a sintered component, wherein that surface region () of the sintered component that has the cohesive connection has a higher density than the adjoining further surface region of the sintered component.

Assembly having two components connected cohesively together

The invention relates to a split bearing arrangement () with a bearing block () comprising counter clamping surfaces () and a bearing cover () comprising clamping surfaces (), wherein the bearing cover () is connected to the bearing block () by means of bolt-like connecting elements mounted in bores () in the clamping surfaces () and/or comprising at least one projection () per clamping surface (), which can be pushed into the counter clamping surface () of the bearing block (), wherein the clamping surfaces () of the bearing cover () or the counter clamping surfaces () of the bearing block () are oriented obliquely at an angle not equal to 90&#xb0; to the longitudinal extension of the connecting elements and/or the projections () are arranged respectively at a distance () of at least 150% of a maximum height () of the projections () over the clamping surfaces () from the bore () and/or a side wall of the bearing cover ().

Split bearing arrangement

The invention relates to a gear assembly () comprising a fixed gear () having a first radial toothing () and an idler () having a second radial toothing (), the first radial toothing () being disposed at least approximately at the same radial height as the second radial toothing (), and the fixed gear () further comprises a first axial end face () and the idler () comprises a second axial end face (), and the fixed gear () is connected to the idler () by means of at least one elastic connecting element (), for which purpose the elastic connecting element () is connected on the one hand to the first axial end face () of the fixed gear () and on the other hand to the second axial end face () of the idler ().

Gear assembly

A gear is described for a spur gear stage without play having a hub () and a sprocket (), which is divided along its axis-normal division plane into two partial sprockets, namely into a hub-fixed sprocket part () and a sprocket ring () which is mounted so it is coaxially rotatable in relation thereto, and which forms springs () sectionally enclosing the hub () in the circumferential direction, which are integrally connected at their bases () to the sprocket ring () and which are supported with their free ends () protruding toward the hub () on stops () of the hub (). To ensure advantageous spring loads, it is proposed that the sprocket ring (), which is mounted so it is rotatable on the hub (), form at least three springs (), which are arranged rotationally-symmetrically with respect to the sprocket axis, and the stops () of the hub (), which are also arranged rotationally-symmetrically, have approach surfaces () for the free ends () of the springs (), which rise radially outward in the circumferential direction toward the bases () of the associated springs ().

Gear for a spur gear stage without play

The invention relates to a synchronizer hub () comprising a hub body () that, on the outer circumference () thereof, has a sleeve toothing () for engagement of a sliding sleeve (), said sleeve toothing being interrupted by at least one first axial recess () and by at least one second axial recess (), wherein the first axial recess () has first lateral faces () and the second axial recess () has second lateral faces (), and wherein the first lateral faces () are inclined to the axial direction at a first angle (). The second lateral faces () of the second axial recess () run at a second angle () to the axial direction, wherein the second angle () is not equal to the first angle () of the first lateral faces ().

Synchronizer hub

The invention relates to a toothed wheel arrangement () comprising a main toothed wheel () and a toothed wheel () that can be rotated relative thereto in the circumferential direction (), wherein the main toothed wheel () comprises a toothed wheel body () on which a hub () is arranged in a projecting manner in the axial direction so as, firstly, to accommodate a shaft and, secondly, to arrange the rotatable toothed wheel () thereon, for which purpose the rotatable toothed wheel () has a cutout () coaxial to an axially extending center axis of the main toothed wheel (), and wherein the main toothed wheel () is connected to the rotatable toothed wheel () by means of a bayonet fastening (). The bayonet fastening () is formed between the hub () and the rotatable toothed wheel () and/or between the hub () and a spring element () bearing on the rotatable toothed wheel ().

Toothed wheel arrangement and method for producing a bayonet fastening

The invention relates to a spur gear wheel with a gear body () made from a sintered material, which has a circumference around which teeth () are distributed projecting in the radial direction, and which is delimited by two end faces () in the axial direction. At least one shaped element () in the form of a recess () and/or an elevation () and/or a compacted area is provided on at least one end face () in the region of the teeth () and/or in the radial direction underneath the teeth ().

Gear wheel

The invention relates to a synchronizing device between two revolving components, comprising a clutch () between a hub () arranged on a shaft () in a rotationally fixed manner and a coupling member () that is rotatably mounted in relation to the hub (), the clutch () having a selector sleeve () with an internal claw gear () which extends along the axial length of the selector sleeve () and by means of which claw gear the selector sleeve () is mounted in an axially displaceable manner on a claw rim () of the hub () and can be slid up onto a claw rim () of the coupling member () for coupling purposes. In order to provide advantageous constructional conditions it is proposed that the hub () forms at least one stop () for the selector sleeve () on the front side facing away from the coupling member (), the stop () protruding radially over the claw rim () and the selector sleeve () receiving the stop () in a frontal stop recess ().

Synchronising device between two revolving components

A sintered gearwheel is described having teeth () which, in the flank and root region (), comprise a compacted surface layer () which is continuous in the transition portion () between the flank and root region () and has a residual porosity of less than 10%. In order to increase the load-bearing capacity it is proposed that the compacted surface layer () is formed with a lower thickness in the transitional portion () between the flank and root region () than in the adjacent flank and root regions ().

Sintered gearwheel

A method for backing the inside teeth () of a sliding sleeve () produced by way of powder metallurgy for a manual transmission is described where the backings () of the teeth () forming the front-side pitches () are formed with the aid of a rolling tool () by back rolling accompanied by plastic deformation of material from the backing region. In order to prevent burr formation, it is proposed that the front-side tooth sections () delimited by the backings () are simultaneously calibrated whilst forming and/or calibrating the relevant pitches () with the aid of the rolling tool () for forming the backings ().

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Altmuenster, Austria

Alexander Mueller