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Author Toenshoff, Hans Kurt. Ostendorf, Andreas. Koerber, Klaus. Beil, Axel. Institution Laser Zentrum Hannover e.V., Hannover, Ger
Source Proceedings of SPIE - The International Society for Optical Engineering. v 4174 2000. Society of Photo-Optical Instrumentation Engineers, Bellingham, WA, USA. p 182-192.
Abstract This paper presents a laser based machining system, especially designed for the production of micro prototypes. The principle work concept of the machine is similar to conventional rapid prototyping (RP) techniques. According to slices of a 3-D CAD data file, the part is created layer by layer from the bottom up to the top. However, an optimized design will extend its application to the production of prototypes in the range of 8 mm3 to 125 cm3 but with a resolution of 20 mu m in all directions. Different to other existing machines is the modular construction, which allows the use of different materials (photo resin or powder material) and laser sources (fiber, solid-state or excimer lasers) with little effort. Thus, stereolithography (SL) and selective laser sintering (SLS) processes can be performed on the same machine. The machining system consist of 5 modules, machine frame, housing, optic, process and software, all designed to meet the requirements defined by a questionnaire among industrial R P job-shops. Pre-investigations have confirmed the resolution in x,y direction. (Auth abstract) [References: 14] XX