Data processing method applied to 3D printing device and 3D printing device

Abstract

The invention discloses a data processing method applied to a 3D printing device. The method comprises the steps that the number of layers of slices is determined; all triangular patches intersectingwith all the slices in an STL model are determined; each slice is divided into a plurality of columns in the X-axis direction or the Y-axis direction, each column contains at least one scanning line in the direction identical to the column direction, and intersection points of each scanning line and the triangular patches in the slices and coordinates of the intersection points are determined; theintersection points on each scanning line are sorted according to the values of the coordinates; the intersection points on all the scanning lines are converted into corresponding pixel coordinates,and all pixels between odd intersection points on each scanning line and next even intersection points adjacent to the odd intersection points are in filled connection; all the scanning lines in the slices are processed to obtain a slice-filled bitmap graph. According to the method, topology information does not need to be established for the STL model, so that a large amount of calculation and sorting are avoided, and the data processing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a data processing method applied to 3D printing equipment and the 3D printing equipment. Background technique [0002] 3D printing (3D Printing) is most commonly used to obtain printing data based on the STL (Standard Template Library) model, and the model entity is constructed by layer-by-layer superposition. STL files are standard file types for rapid prototyping systems. Vertex coordinates and external normal vectors constitute a triangular patch, which does not contain triangular topology, and discretely approximates the representation of a 3D CAD model. Due to the simple data format of the STL model and easy exchange and processing, slice processing based on the STL model has been adopted by most rapid prototyping systems. [0003] The common method of STL layered slicing algorithm is: by analyzing the positional relationship between the tangent plane and the triangular...

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Problems solved by technology

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a data processing method applied to 3D printing equipment and 3D printing equipment, to solve the need to establish topology information in the existing 3D printing data processing methods, Leading to long processing time, large data volume, and low data processing efficiency

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