Method for Determining a Parameter of a Material and Pressing Tool for the Production of a Green Compact
AssigneeGKN Sinter Metals Engineering GmbH
InventorsThomas Villgrattner, Roland Oberleiter
Life of this patent
Estimating the term…
Abstract
At least one parameter of a material is determined with a pressing tool usable for producing a green compact and a pressing tool for producing at least one green compact. The pressing tool has at least one planar surface which is formed at least in part by a die which, starting from the surface, extends along an axial direction and, on the surface, has a cavity which extends from the surface along the axial direction and has an inner circumferential surface; wherein the cavity forms a receptacle for a powdery material which can be pressed in the cavity by at least one punch plunging into the cavity along the axial direction to form the green compact.
Claims13
A method for determining at least one parameter of a material with a pressing tool which can be used for producing a green compact, the pressing tool having at least one working plane with at least one planar surface, a die which at least partially forms the surface, a punch movable relative to the surface along an axial direction, a filling shoe for providing a powdery material, and a measuring device for determining the parameter of the material used for producing the green part;
- wherein the die extends from the surface along the axial direction and has at the surface a cavity extending from the surface along the axial direction and having an inner circumferential surface;
- the cavity forming a receptacle for the powdered material, which can be pressed in the cavity into the green compact by at least the punch plunging into the cavity along the axial direction;
- the filling shoe being movable along the surface;
- wherein the pressing tool has an opening at the surface and along a radial direction next to the cavity, at which opening the measuring device is arranged, wherein the measuring device has a constant volume directly adjoining the surface and the opening with a closable outlet opening;
- wherein the method comprises at least the following steps:
- a) filling the filling shoe with the material from a storage container;
- b) moving the filling shoe over the surface and across the opening;
- c) at least partially filling the volume with the material from the filling shoe via the opening;
- d) carrying out the determination of the at least one parameter by the measuring device and removing the material from the volume via the outlet opening.
A pressing tool for producing at least one green compact, the pressing tool having at least one planar surface which is formed at least partially by a die which, starting from the surface, extends along an axial direction and, on the surface, has a cavity which extends from the surface along the axial direction and has an inner circumferential surface;
- wherein the cavity forms a receptacle for a powdery material which can be pressed into the green compact in the cavity by at least one punch plunging into the cavity along the axial direction;
- wherein the pressing tool has an opening on the surface and along a radial direction next to the cavity, on which opening a measuring device is arranged for determining a parameter of the material used for producing the green compact.
Dependencies are inferred from the claim text.