3D printing device of oral cavity apparatus and printing method

Abstract

The invention relates to a 3D printing device of an oral cavity apparatus and a printing method thereof. The 3D printing device comprises a forming worktable, a power paving device, a first laser module, a second laser module and a laser control module, wherein the laser control module controls the first laser module to output continuous laser to scan and form to form a printing layer of the oralcavity apparatus and output pulse laser for precise processing; the second laser module carries out subtractive processing of a microstructure on the printing layer of the oral cavity apparatus. According to the 3D printing device of the oral cavity apparatus and the printing method thereof provided by the invention, by sending out continuous laser and pulse laser separately by adopting an opticalfiber laser: a first laser with high stability, carrying out scan forming to form the printing layer of the oral cavity apparatus through the first laser for precise processing and carrying out subtractive processing of the microstructure on the printing layer by means of the second laser, follow-up grinding treatment on the oral cavity apparatus of 3D printing is not needed. The oral cavity apparatus is printed and molded at one time, and the 3D printing device has a high precision and simplifies the production step.

Description

technical field [0001] The invention relates to a laser 3D printing technology, in particular to a 3D printing device for oral cavity devices and a printing method thereof. Background technique [0002] Selective Laser Melting (SLM) technology is currently the most precise forming method in metal 3D printing technology. SLM technology uses high-density laser spots to quickly scan two-dimensional graphics in a box with a protective atmosphere. The molten metal powder material is solidified into a thin layer of 20μm-30μm, and the precise 3D molded parts are printed layer by layer, which are widely used in the manufacture of precision parts and implant devices in aerospace, biomedical and other industries. The first pulse laser has the advantages of high stability, low cost, and high peak power. Using this ultrafast pulse laser to process brittle, hard, and ultra-thin materials, the cut is smooth (roughness Ra<1.0μm) without thermal damage, which belongs to cold processing ...

AI Technical Summary

Problems solved by technology

However, the picosecond solid-state pulsed laser imported from abroad is expensive, the system is complex, and the stability is poor, so it cannot be applied to the precision processing of SLM rapid prototyping

[0003] Although the printing accuracy of SLM can reach 0.05mm-0.02mm, due to material and process factors such as powder particle size, laser focus spot size, and layer-by-layer printing, the dimensional accuracy and surface roughness of parts formed by SLM technology still cannot meet the requirements of high-precision parts. Accuracy Requirements of Components

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