A method and system for surface forming 3D printing

Abstract

The invention discloses a surface forming 3D printing method and system. The method comprises the following steps: 3D modeling of a product to be printed, dividing the 3D model into multi-layer cross-sectional graphics; placing a predetermined amount of liquid light curing in a liquid container materials, place the printing platform in the liquid storage tank and place the printing platform under the liquid surface of the liquid photocurable material, and the distance between the initial position of the printing platform and the liquid surface of the liquid photocurable material is equal to the single-layer printing thickness; S3, Use digital micro lens equipment to project the first layer of the cross-sectional pattern onto the printing platform, so that the liquid photocurable material above the printing platform is cured to form the first layer of cross-sectional parts; control the printing platform to move down the distance of the single-layer printing thickness, and then project The second-layer interface graphics are printed to form the second-layer cross-sectional parts of the product, and the printing platform and the digital micro lens device are controlled cyclically in this way until the product printing is completed. The invention has the advantages of high efficiency, high precision and low cost.

Description

technical field [0001] The invention relates to the technical field of rapid prototyping, in particular to a surface forming 3D printing method and system. Background technique [0002] 3D printing (3DPrinting) was first proposed by Jim Bred and Tim Anderson of the Massachusetts Institute of Technology in the United States. They designed a device that can bond powder based on an ordinary inkjet printer, which also became the earliest 3D printer. In March 2009, at the Roadmap for Additive Manufacturing (RAM) Workshop held in Washington, USA, it was officially determined to use the term Additive Manufacturing (AM) to refer to 3D printing technology, and discussed the future The development of rapid prototyping technology has been planned for 10 years. At present, the main stacked manufacturing technologies include selective laser sintering technology (Selectivelasersintering, abbreviated as SLS), stereolithography molding technology (Stereolithography, SLA), fused deposition ...

AI Technical Summary

Problems solved by technology

[0003] However, at present, the introduction of key equipment of rapid prototyping technology is expensive, and the disadvantages of high equipment maintenance price and slow response

However, the production accuracy of low-priced equipment is very unsatisfactory. For example, the equipment costing about 1,500 US dollars has an accuracy of about 0.25mm.

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