DLP three-dimensional printer and printing method thereof

A technology for 3D printers and printed parts, which is applied to 3D object support structures, manufacturing tools, and processing data acquisition/processing. Design and production difficulty, avoid subjective factors, and ensure the effect of printing accuracy

Active Publication Date: 2020-06-02
SHINING 3D TECH CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, manually adjusting the optical path is too subjective and inaccurate, and requires high professional ability for printer calibration personnel, while printer users lack such professional ability. Setting an automatic adjustment device on the printer for calibration is obviously not good for the high manufacturing cost. Reality
Moreover, because the spatial position relationship between the projector and the printing plane, the internal parameters of the projector, and even the entire printing system will have an impact on the one-to-one mapping relationship between the points in the projector image plane and the points in the printing plane, especially the projection The nonlinear distortion of the instrument cannot be eliminated by adjusting the optical path
Therefore, it is very difficult to calibrate the printer, and the printing accuracy is difficult to guarantee

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • DLP three-dimensional printer and printing method thereof
  • DLP three-dimensional printer and printing method thereof
  • DLP three-dimensional printer and printing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A calibration method for a DLP three-dimensional printer projector, comprising the steps of:

[0059] 1) Construct a standard model, this standard model is made up of at least 3 balls arranged in an array;

[0060] 2) Slice the standard model to generate a print image, and print it to generate a print; each layer of print image is generated according to the following formula 8, and record the coordinate Q of each spherical center point in the print image i ;

[0061] Q i =KD[R|T]P i (8)

[0062] Among them, K and D are internal references of the projector, R and T are external references of the projector; the P i is the coordinates of each center point of the standard model;

[0063] 3) Use three-dimensional measurement technology to digitize the print, and then use the fitting method to calculate the coordinates P of each spherical center point in the print i ;

[0064] 4) The coordinates P of each center point in the print are known i and the coordinate Q in ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a DLP three-dimensional printer and a printing method thereof. A slice result of a model to be printed is mapped according to a set mapping relation to generate a printing picture, wherein the set mapping relation reflects a current printing environment, the printing picture is correspondingly adjusted, so that the printing result of each layer approaches slice data with high precision, and thus the printing precision is guaranteed. By adjusting the printing picture, a current printing environment is adapted to. In this way, it is avoided that a user makes adjustment onprinter hardware, the design and production difficulty is lowered, the cost is lowered, and the stability is improved. Subjective factors are avoided, and the printing precision is improved.

Description

technical field [0001] The invention belongs to the technical field of DLP three-dimensional printing, and in particular relates to a DLP three-dimensional printer and a printing method thereof. Background technique [0002] The working principle of the DLP three-dimensional printer is: the sliced ​​results of each layer are projected onto the printing plane through a projector to cure the resin. In the prior art, the printing accuracy is ensured by manually adjusting the optical path. The projector projects a fixed-shaped image onto the printing plane, and then uses the standard model for comparison. By adjusting the position of the projector and the printing plane, the projected image is completely consistent with the standard model. For example, the patent document with the publication number CN106827515A discloses a 3D printing imaging calibration method. The image of the calibration plate located in the imaging area is acquired by a CCD imaging device, and the measurem...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/124B29C64/386B33Y10/00B33Y50/00
CPCB33Y10/00B33Y50/00
Inventor 张健赵晓波
Owner SHINING 3D TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap