The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2025
Filed:
Feb. 07, 2020
Robert Bosch Gmbh, Stuttgart, DE;
Benjamin Schweizer, Horb, DE;
Eberhard Maier, Koengen, DE;
Peter Voehringer, Kornwestheim, DE;
Roland Bleher, Benningen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method for the rapid manufacture of a three-dimensional workpiece from a molten material (), in particular a molten metal, in which method the molten material () is supplied to a compression chamber () and delivered in drop form via an injector hole () by means of a pressure pulse which is generated with the aid of a reciprocating piston () that delimits the compression chamber (). According to the invention, the compression chamber () 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 () in the compression chamber (), which generate a force (F) that makes the gas in the molten material () sink, and in a second step, after the ultrasonic excitation has ended, the piston () is introduced deeper into the compression chamber () in order to remove the rising gas via a conduit () of the piston (). The invention also relates to a device for carrying out the method according to the invention.