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AssigneeRobert Bosch GmbH
InventorsBenjamin Schweizer, Eberhard Maier, Peter Voehringer, Roland Bleher
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The invention relates to a method for the rapid manufacture of a three-dimensional workpiece from a molten material (1), in particular a molten metal, in which method the molten material (1) is supplied to a compression chamber (2) and delivered in drop form via an injector hole (4) by means of a pressure pulse which is generated with the aid of a reciprocating piston (3) that delimits the compression chamber (2). According to the invention, the compression chamber (2) is degassed before manufacturing begins and/or during a pause in the manufacturing. In a first step, ultrasonic waves are coupled into the molten material (1) in the compression chamber (2), which generate a force (FBjrk) that makes the gas in the molten material (1) sink, and in a second step, after the ultrasonic excitation has ended, the piston (3) is introduced deeper into the compression chamber (2) in order to remove the rising gas via a conduit (5) of the piston (3). The invention also relates to a device for carrying out the method according to the invention.
A method for the generative manufacture of a three-dimensional workpiece from a molten material (1), wherein the molten material (1) is fed to a compression chamber (2) and discharged in drop form via a spray hole (4) by a pressure pulse generated by a reciprocating piston (3) that delimits the compression chamber (2), the method comprising
A method for the generative manufacture of a three-dimensional workpiece from a molten metal, wherein the molten material (1) is fed to a compression chamber (2) and discharged in drop form via a spray hole (4) by a pressure pulse generated by a reciprocating piston (3) that delimits the compression chamber (2), the method comprising
Dependencies are inferred from the claim text.