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工程设计学报  2026, Vol. 33 Issue (3): 370-376    DOI: 10.3785/j.issn.1006-754X.2026.05.191
机器人与机构设计     
折纸结构的缠绕式软体抓手设计与分析
李俊龙(),范骏,何人方,程源钒,胡俊峰()
江西理工大学 机电工程学院,江西 赣州 341000
Design and analysis of origami-structured coiling soft gripper
Junlong LI(),Jun FAN,Renfang HE,Yuanfan CHENG,Junfeng HU()
School of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
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摘要:

现有软体抓手与物体的接触面积较小,而具备包络抓取能力的结构通常设计复杂、体积庞大,难以在实现大包络面积的同时兼顾结构简洁性与紧凑性。为解决这一矛盾,设计了一种新型折纸抓手。受蛇类缠绕运动的启发,采用电机驱动绕线轮,通过牵引细绳带动折纸结构有序折叠,从而实现柔顺的缠绕式抓取。通过实验分析了折纸厚度、宽度、长度以及折纸单元邻边夹角等参数对抓取力的影响。结果表明,当折纸厚度为0.125 mm、折纸单元邻边夹角为60°、斜边宽度为22 mm时,抓手的抓取性能最优。其不仅对规则物体与不规则物体均具有良好的适应性,而且具备较强的负载能力,可稳定抓取质量达500 g的物体。所设计的折纸抓手体积小巧、结构简单、包络接触面大且承载能力强,为果蔬采摘、柔性搬运等实际应用场景提供了新颖的技术方案。

关键词: 折纸结构软体抓手绳驱机构缠绕抓取    
Abstract:

Existing soft grippers commonly face the issue of limited contact area with objects, while structures capable of large-enveloping grasps are typically characterized by complex and bulky designs, making it difficult to reconcile the need for extensive surface contact with demands for structural simplicity and compactness. To address this trade-off, a novel origami gripper was designed. Drawing inspiration from the coiling motion of snakes, the gripper utilized a motor-driven winding mechanism to pull a string, driving the sequential folding of the origami structure, thereby achieving compliant coiling grasping. Experiments were conducted to analyze the influence of parameters including origami thickness, width, length, and the origami unit adjacent-edge angle on the gripping force. The results demonstrated that the gripper achieved optimal grasping performance when the origami thickness was 0.125 mm, the origami unit adjacent-edge angle was 60°, and the diagonal width was 22 mm. The gripper not only exhibited notable adaptability to both regular and irregular objects, but also demonstrated considerable load-bearing capacity, reliably grasping objects weighing up to 500 g. Characterized by its compact size, simple structure, large enveloping contact area, and substantial gripping strength, the proposed origami gripper provides an innovative technical solution for practical applications such as automated fruit and vegetable harvesting and compliant handling.

Key words: origami structure    soft gripper    cable-driven mechanism    coiling grasp
收稿日期: 2025-09-09 出版日期: 2026-06-27
CLC:  TH 122  
基金资助: 国家自然科学基金资助项目(52165011);江西省自然科学基金资助项目(20212BAB204028);赣州市科技计划项目(2023PGX16964)
通讯作者: 胡俊峰     E-mail: 2011360523@qq.com;hjfsuper@126.com
作者简介: 李俊龙(2000—),男,硕士生,从事软体机器人研究,E-mail: 2011360523@qq.com
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引用本文:

李俊龙,范骏,何人方,程源钒,胡俊峰. 折纸结构的缠绕式软体抓手设计与分析[J]. 工程设计学报, 2026, 33(3): 370-376.

Junlong LI,Jun FAN,Renfang HE,Yuanfan CHENG,Junfeng HU. Design and analysis of origami-structured coiling soft gripper[J]. Chinese Journal of Engineering Design, 2026, 33(3): 370-376.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2026.05.191        https://www.zjujournals.com/gcsjxb/CN/Y2026/V33/I3/370

图1  蛇类攀爬示意图
图2  折纸抓手的折痕分布
图3  折纸单元间的细绳穿绕方式
图4  折纸单元折叠原理
图5  折纸抓手的折叠过程
图6  折纸抓手几何参数
图7  折纸抓手的最小和最大抓取直径
图8  折纸单元的向下缠绕长度
图9  不同折纸单元邻边夹角的折纸抓手形态
图10  折纸单元间的折叠间隙
图11  折叠间隙对折纸抓手折叠状态的影响
图12  折纸抓手的摩擦力分析
图13  折纸抓手的力矩分析
图14  抓取力测量
图15  对不同形状物体的抓取实验
  
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