Plane prototyping photo-curing three-dimensional printing method capable of controlling workpiece strength

Abstract

The invention relates to a plane prototyping photo-curing three-dimensional printing method capable of controlling workpiece strength, and belongs to the technical field of plastic processing. The method includes the following implementation steps that (1) initialization is conducted, and a digital model generation technology is used for generating a workpiece digital model; (2) the strength of the part digital model and the strength of a supporting digital model are set, and exposure time of the workpiece digital model is determined; (3) the workpiece digital model in the step (1) is subjected to slicing operation; (4) a z-layer two-dimensional slice of the workpiece digital model is judged, and the exposure time is subjected to difference control according to the z-layer two-dimensional slice; and (5) the slicing layer z value of a two-dimensional image in the step (4) is judged so as to determine whether printing needs to be completed or not. By the adoption of the method, in the plane prototyping photo-curing three-dimensional printing process, the exposure time difference can be controlled through software differences according to the curing characteristic of a photosensitive resin material, and the workpiece strength can achieve gradient distribution and serialization only through one material.

Description

technical field [0001] The invention relates to a surface forming light-curing three-dimensional printing method with controllable component strength, which belongs to the technical field of plastic processing. Background technique [0002] At present, in the light-curing 3D printing parts, the process method with controllable strength difference between the support and the part mainly uses a variety of materials 3D printing technology to manufacture the support and part parts separately, and then remove the support material by using the physical or chemical properties of the support material. Using multi-material 3D printing technology requires specific support materials, which increases manufacturing costs. The manufactured parts only contain two kinds of intensities, which cannot realize continuous gradient multi-material manufacturing. [0003] A method of surface-forming light-curing three-dimensional printing, which uses digital light projection equipment (DLP) or liq...

AI Technical Summary

Problems solved by technology

Before 3D printing and manufacturing, it is necessary to design the supporting structure of the part to ensure that each structural part produced during the molding process can be reliably positioned and manufactured completely. However, it is not easy to remove the supporting structure after molding. Removing the supporting structure forcibly will damage the surface of the part. Support the contact part of the structure, so that the surface of the part is rough and deformed

Images