3D photocuring dynamic focusing self-adaption light spot printing method

A technology of dynamic focusing and light curing, which is applied in the direction of 3D object support structure, additive manufacturing, processing data acquisition/processing, etc., can solve the problems of limited scanning speed and limited model structure, so as to improve printing speed, ensure printing effect and print The effect of precision

Active Publication Date: 2019-03-29
J H TECH ELECTRONICS GZ LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the size of the spot is the same when filling the part entity. In the model with more sharp corners, the increase of the spot is limited. Therefore, the variable spot printing process of this method has a limited improvement in scanning speed, and the applicable model structure is also limited. limited

Method used

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  • 3D photocuring dynamic focusing self-adaption light spot printing method
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  • 3D photocuring dynamic focusing self-adaption light spot printing method

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Embodiment 1

[0036] This embodiment provides a 3D photocuring dynamic focusing adaptive spot printing method, such as figure 1 As shown, it includes the following steps:

[0037] S1. Construct the 3D model data of the object to be printed, and discretize the 3D model data to obtain several layer models. The layer model is a shape surrounded by several discrete points. When the printing device prints, it corresponds to the shape of each layer model and prints layer by layer.

[0038] S2. Plan the spot path for each layer model. The spot path includes the size of the spot and the moving direction of the spot. The size of the spot changes dynamically according to the area size of the layer model.

[0039] For spot path planning, refer to figure 2 , first, select a point in the layer model as the base point, and move to the surrounding area from the base point. The base point is chosen as the center or centroid of the layer model.

[0040] The layer model includes broad area 1, sharp corn...

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Abstract

The invention provides a 3D photocuring dynamic focusing self-adaption light spot printing method and equipment. The method comprises the steps that 1, three-dimensional model data of a to-be-printedarticle are built anddiscretized,so that multiple layer models are obtained; 2, light spot route planning is conducted on each model, wherein a light spot route comprises the sizes and the moving direction of light spots, and the sizes of the light spots are dynamically changed according to the area size of the layer models; and 3, according to the light spot route obtained through planning of step 2, the layer models are printed, the sizes of the light spots are dynamically adjusted through the printingequipment, and printing is conducted along the light spot route until printing is completed. Light spot route planning is conducted on each layer model, The proper light spot sizes are set for printing in all different areas in the layer models according to the shape and performance requirements; and the light spots are gradually decreased at positions with sharp corners; and on the premise that the printing precision and printing article performance are guaranteed, dynamic light spotprinting can be achieved in all directions, and the printing speed can be increased.

Description

technical field [0001] The invention relates to a 3D photocuring dynamic focusing adaptive spot printing method. Background technique [0002] 3D photo-curing printing technology is a rapid prototyping technology that uses laser light to irradiate photosensitive resin materials to quickly solidify liquid resin into product shapes; it is based on digital models and uses liquid photosensitive resin as material to print layer by layer. Construct objects. [0003] In 3D photo-curing printing, before starting to "print" the object, it is necessary to obtain the three-dimensional model data of the object to be printed, and then slice the three-dimensional model to obtain the layer model of each layer that needs to be printed. Each layer of the model generates the scanning path of the ultraviolet laser by setting the printing parameters. The ultraviolet laser scans the liquid resin sequentially along the scanning path of each layer model, and the scanned resin thin layer will und...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/135B29C64/268B29C64/393B33Y10/00B33Y50/02
CPCB33Y10/00B33Y50/02B29C64/135B29C64/268B29C64/393
Inventor 陈蓉李一奇
Owner J H TECH ELECTRONICS GZ LTD
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