Research On 3D Printing Support Algorithm Based On Voxel Model

3D printing is a rapid prototyping technology based on a digital model,using a variety of bondable materials stacked “layer by layer”.It has developed rapidly due to numerous advantages,and is the leading technology of the “third industrial revolution”.The rise and development of China's manufacturing industry are of great significance.However,the current 3D printing technology is not perfect and there are still some problems.The supporting structure is an important research issue.Since the 3D printing technology builds a model by stacking materials “layer by layer”,the material filament cannot be formed in the area where the model is suspended,and a support structure needs to be added at the bottom to ensure the normal printing of the model.The support structure can be removed after printing.The supporting structure can cause the waste of material and increase the printing cost,and because the support structure adheres to the model surface,removing the support structure could damage the model surface and affect the appearance of the model.In addition,the support structure can also increase the printing time and decrease efficiency of 3D printing.Therefore,how to reduce or optimize the support structure as much as possible is particularly important.The first chapter of this article describes the working principle of 3D printing and the significance of this technology in the manufacturing industry in China.At the same time,the main research contents of the topic are introduced.The second chapter is about 3D printing,focusing on the structural analysis and optimization of 3D model design in recent years,a lot of related work,especially the related work of 3D printing support structure optimization,and a summary of these work.For the support structure questions,In Chapter 3,a support optimization algorithm based on voxel model is proposed combined with the current support algorithms.According to the voxel model,mutual support effect of voxels is analyzed,and the energy function concept and calculation method of voxel support are introduced.The voxels that need to be added to support should be calculated,so the support structure area can be obtained.Therefore the support structure can be generated according this area.Then the algorithm is verified by related experiments.The experimental results show that the algorithm can generate support for the model more accurately.At the same time,the support algorithm based on the voxel model also has good applicability to the internal support calculation of the model.At the same time,in order to better reduce the generation of support structures,the fourth chapter of this paper is inspired by the spring particle model in the simulation field on the basis of the current research.It uses the spring particle system to calculate the position change of voxels and compares those position changes.The large voxels are sorted out to obtain new support areas,and support is added to these voxels to obtain support for the entire model.The algorithm makes the model not only meet the printing requirements,but also generates less support.The experimental results show the feasibility and effectiveness of the algorithm.In this paper,the improved support algorithm is promoted,and the support structure is optimized to reduce the dependence of the model on the support structure and reduce the consumption of support material.The optimized support algorithm can improve printing quality of the model and success rate of model printing.It can also promote the development of 3D printing and related theories and so on.At the same time,it will also have positive significance for the 3D printing application and promoting the 3D printing popularization.