Design of self-locking gripper for tea stalks

被引:0
作者
He, Xuejun [1 ]
Wang, Jin [1 ]
Lu, Guodong [1 ]
Tang, Xiaolin [2 ]
机构
[1] State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University
[2] Hangzhou Tea Research Institute, China CO-OP
来源
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2014年 / 45卷 / 04期
关键词
Design; End-effector; Gripper; Self-locking; Tea stalk;
D O I
10.6041/j.issn.1000-1298.2014.04.025
中图分类号
学科分类号
摘要
In order to realize column clamping of fresh tea in tea leaf and stalk separation, a self-locking gripper consisted of slider-crank mechanism and RRR assur group was designed. Analysis showed that, retraction phenomenon might happen if parameters were not suitably selected, which make it difficult to grip small diameter objects. However, it could be avoided by the constraining of retraction height. Secondly, relations between parameters were deduced, based on which an appropriate method was proposed on the determination of design parameters. The design problem was attributed to a transcendental equation, which was solved by particle swarm optimization method. Experimental results showed that grippers designed with this method can realize clamping and self-locking successfully, and a clamping length of 5~15 mm was suitable.
引用
收藏
页码:157 / 162
页数:5
相关论文
共 17 条
[1]  
Pettersson A., Davis S., Gray J.O., Et al., Design of a magnetorheological robot gripper for handling of delicate food products with varying shapes, Journal of Food Engineering, 98, 3, pp. 332-338, (2010)
[2]  
Choi H., Koc M., Design and feasibility tests of a flexible gripper based on inflatable rubber pockets, International Journal of Machine Tools & Manufacture, 46, 12-13, pp. 1350-1361, (2006)
[3]  
Li X., Kagawa T., Development of a new noncontact gripper using swirl vanes, Robotics and Computer-Integrated Manufacturing, 29, 1, pp. 63-70, (2013)
[4]  
Davis S., Gray J.O., Caldwell D.G., An end effector based on the Bernoulli principle for handling sliced fruit and vegetables, Robotics and Computer-Integrated Manufacturing, 24, 2, pp. 249-257, (2008)
[5]  
Kyung J.H., Ko B.G., Ha Y.H., Et al., Design of a microgripper for micromanipulation of microcomponents using SMA wires and flexible hinges, Sensors and Actuators A, 141, 1, pp. 144-150, (2008)
[6]  
Agnus J., Heriban D., Gauthier M., Et al., Silicon end-effectors for microgripping tasks, Precision Engineering, 33, 4, pp. 542-548, (2009)
[7]  
Li Q., Hu T., Wu C., Et al., Review of end-effectors in fruit and vegetable harvesting robot, Transactions of the Chinese Society for Agricultural Machinery, 39, 3, pp. 175-179, (2008)
[8]  
Ma L., Yang W., Wang C., Et al., Structure design and experiment of the end-effector for apple-harvesting robot, Journal of Agricultural Mechanization Research, 12, pp. 65-67, (2009)
[9]  
Tan N., Zhang T., Yang L., Tube jointing device of grafting robot, Journal of China Agricultural University, 10, 5, pp. 85-88, (2005)
[10]  
Sun G., Wang X., He G., Et al., Design of the end-effector for plug seedlings transplanter and analysis on virtual prototype, Transactions of the Chinese Society for Agricultural Machinery, 41, 10, pp. 48-53, (2010)