孔洞自动识别与修复在鞋模修复中的应用

Application of Automatic Hole Recognition and Repair in Shoe Mould Repair

摘要: 目前受国家环保力度逐年上升，传统制鞋行业污染重，效率低，加之人员用工成本上升，企业受到多重压力，3D打印制鞋行业受到国家环保政策支持，企业积极转型升级。因此，未来一段时间是3D制鞋行业发展的黄金时间。3D打印机厂商与大型制鞋生产企业，对于鞋模修复的需求主要集中在模型质量与效率。针对鞋模制作方式由机加工向3D打印转换过程中，犀牛等软件设计的模型存在缝隙、孔洞等不可打印问题，解决困扰制鞋行业技术人员在模型设计转换过程中出现的鞋模模型质量差，缺陷多，修复时间长等问题，提出了一种基于孔洞自动分类识别与修复的方法，将孔洞按照拓扑关系划分为单孔洞和连续套洞，根据几何形态划分为缝隙、错位孔洞、环形孔洞、简单孔洞等几类孔洞，对每一类型的孔洞，根据其特点，有针对性地进行修复。对于简单孔洞类型采用这种新的填孔算法，可以达到自动修复模型孔洞的目的。本文方法可以保证修复后的鞋模拓扑正确、填补孔洞区域曲率连续，使鞋模最大程度的接近原始模型，可以为后续3D打印设备提供优质的模型。

Abstract: At present, due to the increasing national environmental protection efforts year by year, the traditional shoe industry is heavily polluted, low efficiency, coupled with the rising labor costs, enterprises are under multiple pressures. The 3D printing shoe industry is supported by the national environmental protection policies, and enterprises are actively transforming and upgrading. Therefore, the future period of time is the golden time for the development of 3D shoe industry. 3D printer manufacturers and large shoe manufacturers mainly focus on model quality and efficiency for shoe mold repair. For mould making shoes from machining to 3 D printing process, such as rhino software design model of cracks, holes and other nonprintable problems, solve the shoemaking industry technical staff in design process model in poor quality of shoes mold model, defects, repair the problem such as long time, this paper proposes a method based on hole automatic classification recognition and repair. The holes are divided into single holes and continuous holes according to the topological relationship, and the holes are divided into crack holes, dislocation holes, annular holes and simple holes according to the geometric morphology. The holes of each type are repaired according to their characteristics. For simple hole types, the new hole filling algorithm can be used to automatically repair the holes in the model. The method in this paper can ensure the correct topology of the repaired shoe mold and the continuous curvature of the cavity filling area, so that the shoe mold is as close to the original model as possible, and can provide a high-quality model for the subsequent 3D printing equipment.