目前,FDM(熔融沉积成型)三维打印系统在医疗领域的应用日益广泛,为了满足医学领域中人工骨骼制造的多样性、准确性、快速性等多方面的需求,提出了一套骨骼成型优化的方案。针对模型在进行分段等层厚分层算法处理后表面光滑度较低的问题,提出了应用于不同层厚分界处的光顺处理算法;为了保证骨骼模型局部特征区域的成型质量,提出了基于周长与法矢量的自适应层扫描速度算法。选择了胫骨模型作为实验对象,结果表明提出的算法使得骨骼模型的成型质量得到了改善,对模型的成型效率也产生了较大提升,从而验证了算法的有效性。
Currently,the FDM( fused deposition modeling) three-dimensional printing system gets extensive application in the medical field. To meet the needs of diversity,accuracy,efficiency of artificial bones manufacturing,this paper put forward a series of schemes on bone molding optimization. Firstly,in order to deal with the defects on surface smoothness after model being processed with uniform thickness layering algorithm of each section,it proposed a smoothing algorithm applying at boundaries with varied thickness. Secondly,to ensure the molding quality in local feature regions,this paper presented an adaptive layer scanning speed algorithm based on the perimeter and normal vector. Then it chose a shank bone model as an example.Experimental results show that the proposed algorithms can improve molding quality while it can promote the molding efficiency. Thus the results verify the validity of the algorithms.