Research On 3D Printing Materials Saving Optimization Related Technology

With 3D printing(additive manufacturing) technology, any complex shape digital models can be quickly converted into physical model, personalized product customization has become a reality for home users. But the popularity of 3D printing technology was still inferior to traditional manufacturing techniques, one of the reasons is the 3D printing material costs are still high. Traditional 3D printers supporting software for the 3D model of the input of volume optimization to save the function of printing supplies, but there are saving supplies is less or save material model of the mechanical and physical properties of non-compliance and other issues.Study on mechanical properties of content optimization based on 3D model optimization, 3D printing required to support optimization, 3D printing model. The main research contents and results are as follows:(1) Proposed a improved skin-truss structure, fast construction and optimization scheme, printing the model volume to meet the physical and mechanical properties of the products, force balance, self balance and print under multiple constraint conditions is minimized, in order to save printing supplies, reduction and low cost.The rapid construction of truss structures using surface mesh simplification strategy,and the original mesh model in topology similar, avoid conflict between truss and skin; based on the experimental analysis, proposed the construction method of internal truss without inner nodes, not only can significantly reduce the overall optimization time, but also can obtain better materials to meet the mechanical effect under the constraint condition; mechanics criterion method and particle swarm optimization combination algorithm, support strut radius using full stress calculation method of truss structure optimization algorithm as the initial value, improve the algorithm globally optimal solution search capability and efficiency, realize the truss struct section size and topology structure of the system of collaborative optimization target. The test results show that this method is robust, effective, cost and efficiency advantage.(2) According to need to add support for 3D printing technology proposed the planto construct an improved tree support structure, by change the print direction that print model required to support at least, and on this basis to build tree support structure, also to support tree generation algorithm be improved, well printed with the relative to the traditional supporting structure fewer materials at the same time.(3) For fused deposition modeling technology to print out the model is easier in between the layers and the fracture characteristics of proposed by computational geometry method, detection model of weak parts, and through optimize print direction to enhance the vulnerable part of the mechanical properties. Compared with mechanical or finite element analysis model has faster detection method of weak efficiency.According to the research results, the software system is developed to optimize the3 D printing materials. The main functions include: optimize materials and supporting structure on the model of print materials, optimization direction optimization model for improving the mechanical properties of the vulnerable part of 3D model.