STL model penetration error comprehensive compensation method in 3DP process

Abstract

The invention relates to an STL model permeability error comprehensive compensation method in a 3DP process, which comprises the following steps: after a printed STL model is obtained, permeability error related parameter setting is firstly carried out, Z-direction permeability error calculation compensation is then carried out to obtain Z-direction permeability error compensation amount, and theZ-direction permeability error compensation amount is used for compensating the model to obtain a permeability error compensation result, an STL model after Z-direction compensation is obtained; pre-layering processing is carried out on the basis of the STL model after Z-direction compensation to obtain a wireframe model of current STL model layering surface data information; XY-direction penetration error calculation compensation is performed on the layered wireframe model to obtain an XY-direction penetration error layered compensation amount, and XY-direction penetration error compensationis performed by using the layered compensation amount to obtain an XY-direction compensated wireframe model; and interpolation compensation is performed on the wire frame model after the XY-directioncompensation to obtain a final wire frame model. The influence of penetration errors on the quality of the printing model is reduced.

Description

technical field [0001] The invention relates to a comprehensive compensation method for penetration errors of STL models in 3DP technology. Background technique [0002] The 3DP process first slices the model to be printed in a discrete manner, and then inputs the path to be printed in each layer into the computer, and controls the layer-by-layer printing of the printer through the computer. Due to the different molding processes, compared with the traditional manufacturing process, the 3DP process includes three-dimensional model construction, slicing, layer-by-layer printing, post-processing and other processes. However, limited by the printing process, the quality of the 3DP process will be affected by many factors, the printing accuracy is not high, and the error of the printed part is relatively large. In order to reduce the printing error and improve the precision of the workpiece, scholars at home and abroad have carried out a lot of related research. [0003] At pr...

Images