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Method for rapidly analyzing clearability of supporting structure in any direction

A support structure and arbitrary direction technology, applied in the field of 3D printing, can solve the problems of difficult and removable support structure analysis, etc., to achieve the effect of optimizing the calculation of printing direction, speeding up the search efficiency, rapid analysis and so on

Pending Publication Date: 2021-05-04
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0005] The main purpose of the present invention is to provide a rapid analysis method for the removability of a support structure in any direction, so as to solve the problem in the background technology that it is difficult to quickly analyze the removability of a support structure along any angle

Method used

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  • Method for rapidly analyzing clearability of supporting structure in any direction
  • Method for rapidly analyzing clearability of supporting structure in any direction
  • Method for rapidly analyzing clearability of supporting structure in any direction

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing and embodiment the present invention will be further described

[0025] Such as figure 1 As shown, the rapid analysis method of the removability of the support structure in any direction mainly includes the following steps:

[0026] Step 1 Carry out voxelization of 3D model for fast judgment of accessibility of separation points

[0027] 1-1. Voxelize the 3D model in STL format, such as figure 2 As shown in , the AABB (that is, axial) bounding box of the 3D model relative to the world coordinate system is calculated, and then the bounding box is divided into a set of square voxels of the same size according to the required resolution. Such as image 3 As shown in , the voxels of the entire bounding box are obtained. The higher the resolution, the smaller the voxels obtained. The side length of the voxels is set to the diameter of the clearing tool. The size of the bounding box of the 3D model in this example is 75*75*2...

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Abstract

The invention discloses a method for rapidly analyzing the clearability of a supporting structure in any direction. The method comprises the following steps of: 1, performing voxelization on a three-dimensional model for quickly judging the accessibility of a separation point; 2, quickly generating a voxel path II approaching a straight line segment based on a three-dimensional Bresenham algorithm; and 3, parallelly and efficiently detecting the accessibility of all separation points of the three-dimensional model. According to the method, the problems that the cleaning direction of the supporting structure in a 3D printing product is limited and time is consumed are solved, and the supporting structure is supported to rapidly analyze the cleanability in any direction and optimize printing direction calculation. According to the method, the Bresenham algorithm is expanded to the three-dimensional space, the voxel path approaching the straight line segment in any direction can be generated, the three-dimensional Bresenham algorithm is an integer traversal algorithm, the judgment formula is refined, the calculated amount is small, no accumulative error exists, and the searching efficiency of the voxel path in the first step is improved. Therefore, the clearability analysis of the supporting structure at any angle can be quickly supported.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular, it designs a rapid analysis method for the detachability of a support structure in any direction. Background technique [0002] 3D printing has attracted extensive attention from industry and academia due to its unique advantages such as supporting free design, personalized customization, and energy saving. When manufacturing complex geometric models, 3D printing often needs to add support structures to prevent local collapse and curling of the printing results. At the same time, in order to ensure that the product can be effectively manufactured, the 3D printing result usually needs to remove the support structure. Considering that the support structure is usually difficult to dissolve directly and requires manual removal, in order to avoid the failure of the printed result because the support structure cannot be removed, which affects the iterative design cycle of the product and wast...

Claims

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Application Information

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IPC IPC(8): G06F30/10B29C64/386B33Y50/00
CPCG06F30/10B29C64/386B33Y50/00
Inventor 潘万彬张鑫莹王琳涵
Owner HANGZHOU DIANZI UNIV
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