Generation method, terminal and storage medium of overflow hole

Abstract

The invention discloses a generation method, terminal and storage medium of an overflow hole. The method includes: obtaining the first center point, the tooth cusp direction and the first preset offset distance of the bounding box of the dental arch model. Two central points; construct n first rays with the second central point as the starting point; take the intersection of the first ray and the outer wall of the dental arch model as the first intersection; take the first intersection as the starting point, along the outer wall at the first intersection Construct the second ray in the negative direction of the normal line at the position; obtain the intersection point closest to the first intersection point among the intersection points between the second ray and the inner wall of the dental arch model, and use it as the second intersection point; use the first preset radius to construct a penetrating inner wall of the dental arch model and the first cylinder on the outer wall; perform Boolean difference processing on the dental arch model and the first cylinder to generate overflow holes. The invention solves the problem that the size and shape of the overflow holes generated for the dental arch model in the existing dental three-dimensional design software are fixed, so that some overflow holes cannot play the role of overflow drainage.

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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