3D Printer Based On Digital Light Processing Technology

Rapid prototyping technology known as 3D printing technology. With the gradual stabilization of rapid prototyping technology, and now there have been a variety of rapid prototyping technology programs. In aviation, medical, and other fields has been designing innovative applications. 3D printing technology using a metal powder material or resin material as raw material. Selective laser melting technology(Selective Laser Melting, SLM) is one of the representative uses metal powder material 3D printing technology,which uses laser light to melt the powder layer by layer, then melted powder solidifying completed molding. In terms of non-metallic resin material, there are two types of representative technologies: One is fused deposition technology(Fused Deposition Modeling, FDM), represented by the use of engineering resins meltmolding material 3D printer; The other is stereolithography technique(Stereo lithography Apparatus, SLA), represented by the use of a photosensitive resin material is light-cured polymer 3D printer representatives.SLA is the most mature development of 3D printing technology. Currently SLA 3D printer has the following technology types, namely, laser scanning type, projection exposure type, polyjet printing type. Wherein the projection exposure printers using digital projection technology(Digital Lighting Processing, DLP) complete 3D printing. DLP technology allows the introduction of Light curing 3D printer can achieve high accuracy at low cost model molding. Highly integrated projection technology ensure stable performance of 3D printer. Projection light curing 3D printing technology for the production of small size, high accuracy of a particular model, in accordance with the current market demand for jewelry and dental applications.The main content of this paper is based on DLP technology, light-curable 3D printer prototype production, and make a brief analysis Prototyping properties, mainly as follows:First, the study DLP technology and a light curing 3D printing technology feasibility, to determine the specific system solutions 3D printer device, modified the original DLP projectors.Second, the production microcontroller as the core of the circuit control system, is responsible for receiving PC side control instruction, the Z-axis precision motion control- control the printer and projection equipment.Third, in the PC-side software written in C # handle STL data model and adopt new procedures to improve the process slicing algorithm, making it suitable for DLP technology.Fourth, complete prototype production and print samples, analysis and comparison of 3D printers the moldability analyze factors affecting precision molding, and proposed follow-up program of possible improvements.The results of this study for the same type of light-curable 3D printing device has a certain reference value.