METHOD AND DEVICE FOR THE ADDITIVE MANUFACTURING OF A THREE-DIMENSIONAL WORKPIECE FROM A LIQUID MATERIAL

• Main Authors: SCHWEIZER BENJAMIN, BLEHER ROLAND, VOEHRINGER PETER, MAYER EDGAR
• Format: Patent
• Language: Chinese; English
• Published: 11.05.2021
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; NOZZLES; PERFORMING OPERATIONS; POWDER METALLURGY; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; WORKING METALLIC POWDER; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a method for the additive manufacturing of a three-dimensional workpiece from a liquid material (1), in which method the liquid material (1) is fed to a displacement chamber (2) and discharged in drop form via a jet hole (4) by means of a pressure pulse which is generated with the aid of a reciprocating piston (3) delimiting the displacement chamber (2). According to the invention, in order to optimise the wetting properties of at least one surface (5, 6) which delimits the displacement chamber (2) and/or the jet hole (4), sound waves are coupled into the liquid material (1) for a limited period of time with the aid of the piston (3) which is caused to vibrate for this purpose. The invention also relates to a device for carrying out the method according to the invention. 本发明涉及一种用于由液态材料(1)增材制造三维工件的方法，其中，液态材料(1)被供应给排挤室(2)并且借助压力脉冲经由喷射孔(4)以液滴形状被排出，所述压力脉冲借助限界排挤室(2)的可往复运动的活塞(3)产生。根据本发明，为了优化限界所述排挤室(2)和/或喷射孔(4)的至少一个表面(5,6)的润湿特性，在时间上受限地借助为此被置于振动中的活塞(3)将声波耦入所述液态材料(1)中。本发明还涉及一种用于执行根据本发明的方法的设备。