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US 10,518,311 B2Granted
Forming press and method for forming a sheet-like blank composed of metal with two frame parts that are movable towards one another
OwnerPeter Amborninventor
Life of this patent
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Abstract
A forming press for forming a sheet-like blank has a first thermally insulated frame part having a die with a negative engraving and a second thermally insulated frame part defining a chamber and having a punch movably disposed in the chamber. The sheet-like blank rests in a sealing manner on the second frame part and covers the punch so as to define a pressure chamber with the punch therein. A pressure generator provides a pressurized gas to the pressure chamber during a forming process.
Claims14
A method for forming a sheet-like blank with a press, comprising:
- providing a forming press for forming a sheet-like blank, comprising:
- a first thermally insulated frame part having a die with a negative engraving;
- a second thermally insulated frame part defining a chamber and having a punch movably disposed in the chamber;
- a sheet-like blank resting in a sealing manner on the second frame part and covering the punch so as to define a pressure chamber with the punch therein;
- and
- a pressure generator providing a pressurized gas to the pressure chamber during a forming process;
- placing the sheet-like blank onto the second thermally insulated frame part;
- moving the frame parts toward each other;
- heating the sheet-like blank to a forming temperature that is specific to the material of the sheet-like blank;
- pressurizing the pressure chamber with the pressurized gas;
- moving the punch into the negative engraving of the die;
- releasing the gas pressure at least to a level that allows opening the frame parts;
- moving the frame parts apart after forming the sheet-like blank;
- removing a completed work piece;
- moving the punch into an initial position, wherein the punch rests on a bottom side of the sheet-like blank prior to forming.
12 more elements
Dependencies are inferred from the claim text.