3D printer high-precision mounting structure and 3D printing method based on 3D printer high-precision mounting structure

Abstract

The invention discloses a 3D printer high-precision mounting structure and a 3D printing method based on the 3D printer high-precision mounting structure. The high-precision mounting structure comprises a mounting back plate, a forming platform, a resin material disc, an optical lens and a DMD light-emitting chip; the forming platform, the resin material disc, the optical lens and the DMD light-emitting chip are fixed to the mounting back plate in parallel from top to bottom, and are each vertical to the mounting back plate; according to the 3D printing method, printing time sections of the printing area are divided into common printing time sections and added printing time sections; according to the printing material and illumination intensity conditions, the common printing time sections are set; the printing area is equally divided into a plurality of blocks with the X / Y equal size in the XY size; finally, the UV-irradiationintensity error of each block is tested, and in combination with product thickness, the added printing time section of each block is adjusted; and according to the 3D printer high-precision mounting structure and the 3D printing method, the printing precision is controlled from two aspects, and therefore the problem that the printing precision of an LED or DLP printer deviates is solved.

Description

technical field [0001] The invention relates to a high-precision installation structure of a 3D printer and a 3D printing method based thereon, belonging to the technical field of 3D printing. Background technique [0002] Traditional photosensitive material 3D printers mostly use DLP projectors (high-pressure mercury lamps or LED bulb light sources) as light sources after modification, and irradiate photosensitive materials through high-pressure mercury lamps or LED (special wavelength) white light or ultraviolet light or ultraviolet light emitted by laser generators. , so that the photosensitive material reacts and solidifies under the condition of light, and the forming platform drives the Z-axis to move up and down under the control of the software, so as to realize layer-by-layer forming and complete the 3D printing action. However, in traditional DLP or SLA laser 3D printing, the diameter of the emitting lens of the light source is often smaller than that of the printi...

AI Technical Summary

Problems solved by technology

However, in traditional DLP or SLA laser 3D printing, the diameter of the emitting lens of the light source is often smaller than that of the printing area, and at the same time, all light-emitting components have different degrees of fan-shaped angle between the light source and the printing layout, because the printing plane and the light-emitting components The distance between the planes is different, resulting in a difference in the light intensity between the central area and the surrounding area. The relative light intensity of the central area is relatively strong, and the light intensity of the edge area will be weak, resulting in the printed product being thicker in the center area than the edge area. , affect the printing accuracy; and the existing 3D printers for LED and DLP projection ultraviolet light forming are not absolutely flat because the projection light plane, the liquid surface of the forming material and the printing and forming table are not absolutely flat, which leads to distortion of the 3D image of each printing area It affects the printing accuracy, so that the accuracy error of the printed product can only be controlled above 0.1MM-0.2MM, which cannot meet the high-precision market demand

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