Powder press and method for powder-pressing a powder-pressed part
AssigneeDorst Technologies GmbH & Co. KG
InventorsWalter RAU, Michael Thomas SILBERMANN
Life of this patent
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Abstract
The invention relates to a powder press for pressing a powder-pressed part, comprising at least one first punch, which, in a pressing position, is arranged to be immersible from a first side into a cavity of a die filled with ceramic or metal powder, as well as a centre pin with an external thread for forming an internal thread in the powder-pressed part, wherein during the pressing the centre pin is arranged in the cavity and, for demoulding of the pressed part, is moved translationally via a translatory drive and is rotated about its longitudinal axis via a rotary drive such that the centre pin is moved out of the formed internal thread of the pressed part.
Claims13
A method for powder-pressing a powder-pressed part, in particular metal powder-pressed part, preferably hard metal powder-pressed part, and/or ceramic powder-pressed part and/or plastic powder-pressed part, wherein during the pressing a centre pin with an external thread for forming an internal thread of the powder-pressed part is arranged in a powder-filled cavity of a die of a powder press, wherein the centre pin is moved translationally via a translatory drive during demoulding of the powder-pressed part and is rotated about its longitudinal axis via a rotary drive such that the centre pin is moved out of the formed internal thread of the powder-pressed part.
A powder press, in particular metal powder and/or ceramic powder and/or plastic powder press, preferably for use in a method for powder-pressing a powder-pressed part, the press comprising a control unit, at least one first punch, which is arranged in a pressing position to be immersible from a first side into a cavity of a die to be filled with powder, and a centre pin with an external thread for forming an internal thread in the powder-pressed part, which can be moved axially via a translatory drive and can be rotated about its longitudinal axis via a rotary drive, wherein the control unit is configured to control the translatory drive and the rotary drive in dependence of the internal thread of the powder-pressed part to be pressed in such a synchronised manner that the centre pin can be moved out of the formed internal thread of the powder-pressed part after the pressing process.
Dependencies are inferred from the claim text.