3D printing equipment, printing method and 3D data processing system and method

Abstract

The invention discloses 3D printing equipment, a printing method and a three-dimensional data processing system and method. The printing method comprises the steps that preset images are sequentially projected to a calibration area where at least three calibration points on a component platform are located, and images of the preset images in the calibration area are shot to obtain at least three sets of calibration images; according to the corresponding relation between pixel coordinates of at least three feature points in an energy radiation system and pixel coordinates of the at least three feature points in the calibration images and the corresponding relation between physical coordinates of the at least three calibration points on the component platform and pixel coordinates of the at least three calibration points in the calibration images, the conversion relation between a physical coordinate system of the component platform and a pixel coordinate system of the energy radiation system is obtained; and a curing pattern is generated according to the conversion relation and physical coordinates of a flow guide structure on the component platform, so that the projection, projected on the component platform, of the energy radiation system does not coincide with the flow guide structure on the component platform when the energy radiation system carries out projection according to the curing pattern, residues are prevented from being generated in the flow guide structure, and the printing quality is improved.

Description

technical field [0001] This application relates to the technical field of 3D printing, in particular to a 3D printing device and printing method, a three-dimensional data processing system and method. Background technique [0002] 3D printing is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal, plastic and resin to construct three-dimensional objects by layer-by-layer printing. 3D printing equipment that implements this printing technology is widely used in molds, customized products, medical fixtures, prostheses and other fields due to its high molding accuracy. Among them, according to the placement of the energy radiation device and the container, it can be divided into 3D printing equipment based on bottom projection or bottom exposure and 3D printing equipment based on top projection or top exposure. [0003] Taking bottom projection or bottom exposure 3D printing equipment as an...

AI Technical Summary

Problems solved by technology

However, during the printing process, the energy radiated by the energy radiation system may radiate to the photocurable material in the flow guide structure, so that the photocurable material in the flow guide structure is shaped, and the cured material formed in the flow guide structure is printed During the process or when picking up parts, it will fall into the container or sink to the bottom of the container, resulting in photocurable material residues in the container. If these residues cannot be removed in time, they will be damaged in the subsequent printing process due to components The drop of the platform presses these residues on the release film at the bottom of the container, thereby destroying the release film. Even if the residue particles are small and do not damage the release film, it will affect the accuracy of the projected image at the bottom of the container, thereby affecting the printing accuracy, thereby increasing Increase the production cost and affect the molding quality

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