Miba Sinter Austria Gmbh

Horst Roessler

Alexander Mueller

Christian Kronberger

Martin Ohler

Christian Sandner

Juergen Buchinger

Karl Dickinger

Helmut Pamminger

Herbert Schmid

Robert Spitaler

Johannes Koller

Manuel Steinmaurer

Guenther Winterbacher

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

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.

Method for the surface compaction and calibration of a sintered component

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 rolling tool () for producing crowned teeth on a gear () using a transverse rolling process, in particular for compressing the teeth of the gear () at least in some areas, comprising a tool body () which has tool teeth () projecting radially outward for meshing with the teeth of the gear () to be rolled, wherein at least some areas of the tool teeth () are concave in the axial direction in the area of the tooth flanks.

Rolling tool, apparatus and method for the production of crowned teeth, and gear

A method and a device stretches and forms a foil blank and a product is produced by this method. The foil blank is stretched in at least one direction and slides along in at least one direction during the deformation. The sliding along may be controlled, and the clamping force and the clamping speed may be regulated.

Synchronizer hub

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

The invention describes a method of machining a toothing () on an outer circumference () or an inner circumference of a work piece () made of pressed and sintered powder metal, by means of a rolling process carried out on the toothing () with two rotating section rolling wheels () which section toothing () engaging in the toothing of work piece (). The two section rolling wheels () are rotatably arranged in a common support frame () with an at least approximately constant distance between their section rolling wheel axles ().

Method and device for machining a toothing on a sintered part

A sintered coupling ring () is described, comprising a ring of coupling teeth () which comprise relieved flanks () extending from wedge-shaped end faces () and, on the side opposite the wedge-shaped end faces (), a stop () that protrudes radially beyond the tooth tip (). In order to provide advantageous constructional conditions it is proposed that the stops () have a greater density than the remaining tooth tip ().

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Wels, Austria

Horst Roessler