袜类三维模型生成编织参数方法及其应用  

Technique for generating knitting parameters from 3-D model of socks and applications

作　　者：汝欣 叶筱 颜才杰 彭来湖[1,4] 史伟民[1] RU Xin;YE Xiao;YAN Caijie;PENG Laihu;SHI Weimin(Key Laboratory of Modern Textile Machinery&Technology of Zhejiang Province,Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;Shanxi University,Taiyuan,Shanxi 237016,China;Zhejiang Hengqiang Technology Co.,Ltd.,Hangzhou,Zhejiang 311100,China;Zhejiang Sci-Tech University Longgang Research Institute,Wenzhou,Zhejiang 325802,China)

机构地区：[1]浙江理工大学浙江省现代纺织装备技术重点实验室,浙江杭州310018 [2]山西大学,山西太原237016 [3]浙江恒强科技股份有限公司,浙江杭州311100 [4]浙江理工大学龙港研究院有限公司,浙江温州325802

出　　处：《纺织学报》2024年第4期105-110,共6页Journal of Textile Research

基　　金：浙江省公益技术研究计划项目(LGG21E050024);浙江省科技计划项目(2022C01065)。

摘　　要：对于具有高精度设计要求的压力袜、医疗袜等定制产品,现有定制设计方法仅能保证足长、足高等关键数据准确性,存在无法全方位满足定制用户足部数据要求的问题。基于模拟编织的思想,提出了一种由袜子三维模型全自动生成模拟袜机编织的编织路径图的方法。其中编织路径图的生成方法为:采样点由袜口开始沿着采样轴方向在袜类三维模型表面迭代采样用以模拟圆袜机的逐圈编织,并在采样过程中根据采样轴与三维模型顶点法向量的夹角调整线圈高度,直至完成袜头部分的迭代采样。然后将得到的编织路径图进行编译,得到各线圈圈高参数以及各部段圈数参数。最后以该参数修改WLT-6F袜机编织所需的链文件进行上机编织。对比样品与输入三维模型的尺寸差距,其误差处于4.1%以内。Objective For customized socks,such as medical socks and sports socks,the existing customized design techniques can only ensure the accuracy of key data for foot length and foot height,but cannot meet the accuracy requirements for the target user's foot that needs to be better fitted.In such cases,a trial-and-error excercise would be necessary to meet the needs of users after obtaining the parameters,which makes the hosiery customization process inefficient.Method According to the actual knitting process based on the circular sock machine,the yarn starts from the top and is knitted circularly along the direction of the tube until the sock toe part is knitted.For the proposed technique,the sampling point also started from the top and was iteratively knitted along the sampling axis until the toe part was sampled.The model sampling axis was obtained as the first step.Since the model skeleton was represented the direction of the model,it was selected as the sampling axis.The Shapira L method was adopted and simplified as sampling axis extraction method.The model surface was iteratively sampled to obtained the knitting path graph including the coil size.In this research,the sock top ring was used as the initial sampling ring,the sampling axis was used as the sampling direction for vertical iterative sampling,and the coil height was adjusted during sampling according to the angle between the normal vector of the model surface point and the sampling axis.When calculating the next sampling row,if the number of vertices on the model surface was small,the sampling row would be uneven.Therefore,the weighted average method was used to smooth the sampling points.Since the upper and lower loops were essentially the same yarn during the knitting process of the circular socks machine,it was necessary to connect the sampling point at the end of the current row with the sampling point at the beginning of the next row during iterative sampling.When the position of the next sampling line exceeded the current sampling axis segment,th

关 键 词：模拟编织 编制路径图 迭代采样 骨架提取 编织参数 定制袜子 圆袜机编织 

分 类 号：TS941.26[轻工技术与工程—服装设计与工程] TP311.5[自动化与计算机技术—计算机软件与理论]