• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2023, Vol. 59 ›› Issue (11): 201-212.doi: 10.3901/JME.2023.11.201

• 机器人及机构学 • 上一篇    下一篇

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具有三阶幻方拓扑构型的厚板折纸机构运动相容性分析

畅博彦1,2, 张浩楠1, 梁栋1,2, 金国光1,2   

  1. 1. 天津工业大学机械工程学院 天津 300387;
    2. 天津市现代机电装备技术重点实验室 天津 300387
  • 收稿日期:2022-06-05 修回日期:2022-12-13 出版日期:2023-06-05 发布日期:2023-07-19
  • 通讯作者: 金国光(通信作者),男,1963年出生,博士,教授,博士研究生导师。主要研究方向为机械设计及理论、机械系统动力学与控制。E-mail:jinguoguang@tiangong.edu.cn
  • 作者简介:畅博彦,男,1985年出生,博士,副教授。主要研究方向为机构学和机械系统动力学。E-mail:mmts_tjpu@126.com;张浩楠,男,1997年出生,硕士研究生。主要研究方向为折纸机构结构学和运动学。E-mail:haonan_zh@126.com;梁栋,男,1985年出生,博士,副教授。主要研究方向为机器人机构及优化理论、多柔体系统动力学与控制,E-mail:dongliang@tiangong.edu.cn
  • 基金资助:
    国家自然科学基金(52005368,52175243)和天津市高等学校创新团队培养计划(TD13-5037)资助项目

Foldability Analysis of Thick-panel Origami Mechanism with Third-order Magic Square Topology

CHANG Boyan1,2, ZHANG Haonan1, LIANG Dong1,2, JIN Guoguang1,2   

  1. 1. School of Mechanical Engineering, Tiangong University, Tianjin 300387;
    2. Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology, Tianjin 300387
  • Received:2022-06-05 Revised:2022-12-13 Online:2023-06-05 Published:2023-07-19

摘要: 折纸机构是折展机构的一种,折痕分布对折纸机构的刚性折展运动有直接影响。首先,提出一类具有三阶幻方拓扑构型的折纸机构,运用拓扑学理论对折纸机构的拓扑组成元素进行分析,通过构造网孔环路矢量和折痕分布矩阵,形成一种可用于描述折纸机构折痕分布特征的矩阵表示方法。其次,建立拓扑图旋转、翻转和镜像操作过程的矩阵运算数学模型,对256种三阶幻方折纸机构拓扑构型进行同构判定后,将得到的23种拓扑构型分为方扭型、轴对称型和不规则型。最后,在考虑板件厚度的同时,为了判断机构是否可刚性折展,将三阶幻方中每一个网孔环路处的单顶点四折痕机构等效为Bennett机构,通过引入分位角参数矩阵、转角特征矩阵和分位角特征矩阵,建立运动相容性判定方程的通用表达式,提出运动相容性系数的概念,并将其应用于厚板机构的刚性折展性分析,发现23种拓扑构型中有19种可用于厚板折展单元的设计,以折展单元与其镜像体进行模块化扩展为例,说明了此类折展单元在构造大尺度折展机构时的应用前景。

关键词: 可展机构, 折纸机构, 拓扑学, 刚性可折性, 运动相容性

Abstract: Rigid foldability of the origami mechanism is directly affected by the crease pattern. Firstly, components of the origami crease pattern with third-order magic square topology are examined with topology theory. To represent the crease assignment features of the origami topology, the mesh circuit vector and the crease assignment matrix are constructed. Secondly, the origami topology is identical before and after the operations of rotating, flipping, and mirroring for two hundred and fifty-six topology configurations. Following isomorphism determination, twenty-three topological configurations are obtained and classified as three types named square-twist type, axisymmetric type, and irregular type. Finally, to determine whether the thick-panel origami mechanism can achieve rigid folding, the single-vertex four-crease mechanism is equivalent with the Bennett linkages kinematically. A general formula of kinematic compatibility is established by introducing the sector angle parameter matrix, the dihedral angle eigen matrix, and the sector angle eigen matrix. The coefficient of kinematic compatibility is proposed and it can be used to determine whether a thick-panel origami mechanism is rigidly foldable or not. Nineteen of the twenty-three topological configurations are available for rigidly foldable thick-panel modules. These modules can be used to construct large scale deployable mechanisms with their mirrored counterpart which have a great prospect.

Key words: deployable mechanism, origami mechanism, topology, rigid foldability, kinematic compatibility

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