Generation method of overflowing holes, terminal and storage medium

Abstract

The invention discloses a generation method of overflowing holes, a terminal and a storage medium. The method comprises the following steps: acquiring a second central point according to a first central point of a bounding box of a dental arch model, a tooth tip direction and a first preset offset distance; constructing n first rays by taking the second central point as a starting point; taking anintersection point of the first rays and the outer wall surface of the dental arch model as a first intersection point; constructing second rays along a negative direction of a normal of an outer wall surface at the first intersection point by taking the first intersection point as a starting point; acquiring an intersection point, which is nearest to the first intersection point, in the intersection points of the second rays and an inner wall surface of the dental arch model as a second intersection point; constructing a first cylinder penetrating the inner wall surface and outer wall surface of the dental arch model by virtue of a first preset radius; and carrying out Boolean calculation difference set processing on the dental arch model and the first cylinder, so as to generate the overflowing holes. According to the generation method, the problems that the sizes and shapes of overflowing holes generated for a dental arch model in dental three-dimensional design software are fixed,and therefore, partial overflowing holes cannot play a role of overflowing are solved.

Description

technical field [0001] The invention relates to the field of computer-aided design, in particular to a method for generating overflow holes, a terminal and a computer-readable storage medium. Background technique [0002] In order to save printing materials, generally when designing the dental arch model, an open cavity is provided at the bottom of the dental arch model, but when printing the dental arch according to the dental arch model with an open cavity at the bottom, it is first from the The bottom of the dental arch model starts to print, which will cause the bottom of the dental arch model to be in contact with the printing plate, and the originally designed open chamber will be closed to form a closed space, in which printing materials will accumulate and cause printing Material waste, in order to solve this problem, it is necessary to open overflow holes on the dental arch model to discharge the printing materials accumulated during the printing process. However, ...

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Problems solved by technology

[0003] The main purpose of the present invention is to propose a generation method, terminal and computer-readable storage medium of the overflow hole, aiming at solving the problem that the size and shape of the built overflow hole are fixed during the digital modeling process of the existing dental arch model, which causes printing The problem that some overflow holes in the process of dental arch cannot play a role in draining overflow

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