Self-adaptive layering method in 3D (three-dimensional) printing

Abstract

The invention discloses a self-adaptive layering method in 3D (three-dimensional) printing. The method comprises the following steps of obtaining a maximal allowed layer thickness and a minimal allowed layer thickness according to a corresponding 3D printing device; obtaining an SLC file of an entity to be processed according to the minimal allowed thickness; reading the SCL file to obtain each layer outline information of the entity; reserving a first layer outline, and setting an initial value i to be 2; calculating an intersected polygonal set between the ith layer outline and the reserved first layer outline; calculating the area ratio parameter and average distance parameter, and judging whether the ith layer outline is reserved or not according to the area ratio parameter and the average distance parameter and t he maximal allowed layer thickness; returning to step 5 if the value of i is not greater than the layering number n of the entity when i is plus one; otherwise, ending the calculation, and outputting the self-adaptive layering result of the entity. The robustness is strong, the method is applicable to different models of different shapes and particularly effective for the large-sized model with a complicated structure; meanwhile, the method is simple, good in universality and more easily embedded into the 3D printing device so as to realize the commercialization.

Description

technical field [0001] The invention belongs to the field of 3D printing technology layering methods, and in particular relates to an adaptive layering method in 3D printing. Background technique [0002] With the rapid development of 3D printing technology, it can provide key technical support for the development of aerospace, machinery, biology, medicine and other fields. The biggest advantage of 3D printing technology is that it does not require mechanical processing and any molds, which can greatly shorten the product development cycle and reduce production costs. For 3D printing technology, layering is one of the key technologies. Layering technology involves a balance between the processing time of 3D printing and the precision of the product. When the precision of the product is higher, the number of layers will be larger, so the processing time will be greatly increased, and when the number of layers is reduced, the precision of the product cannot be guaranteed. T...

AI Technical Summary

Problems solved by technology

[0004] However, there is no adaptive layering method that can layer all models, especially large models with complex structures. This also makes it difficult for existing adaptive layering methods to be generalized and commercialized.

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