Apparatus for manufacturing three-dimensional objects

Abstract

An apparatus and a method manufacture three-dimensional objects by selective solidification of a build material applied in layers. In order to improve the manufacturing process and in particular to optimize heat input, a heating element is provided that has at least two functional openings. One of the at least two functional openings serves as a material pass-through and another of the at least two functional openings serving simultaneously as a radiation pass-through.

Description

technical field [0001] The invention relates to a device and a method for producing three-dimensional objects by selectively hardening a build-up material applied layer by layer. Background technique [0002] A large number of devices and methods are known from the prior art for the production of three-dimensional objects by selectively hardening building materials applied layer by layer. Mention may be made here, for example, of laser sintering or selective mask sintering. A facility that implements such a layer construction method is also called a rapid prototyping system. Such layer construction methods are used for the production of layer-by-layer components made of hardenable materials such as resin, plastic, metal or ceramic, and for example for the production of technical prototypes. In this case, three-dimensional objects can be produced directly from CAD data by means of additive manufacturing methods. [0003] In such layer construction methods, the construction...

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Problems solved by technology

[0007] Other methods also result in undesirably non-uniform temperature distribution in the material of construction

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