Design and Application of a Kind of Micro-Gripper with Pneumatic Control System

Abstract:

In this paper, a kind of micro-gripper is introduced using vacuum adsorption method. The gripper is used to grasp a mm size micro-part in a micro-assembly process. Because of the requirement of the adsorption force, the negative pressure control system is employed which can let the micro-gripper inhale and exhale freely. Accordingly, the adsorption force of the micro-gripper can be controlled accurately. The PLC controller is used to get the pressure information from the electronic proportional valve. The PID control law is employed to adjust the opening of the valve. In this way, the micro-gripper can easily clamping and release micro-part especially for some micro-parts with adsorption effect. Experiments show that the adsorption force on the micro-part is greater than 0.5N satisfying the requirement of the clamp to grasp the micro-part.

• Periodical: Advanced Materials Research (Volumes 945-949)
• Pages: 1561-1564
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.945-949.1561
• Online since: June 2014
• Authors: Zheng Tao Zhang*, Hai Peng Li, De Xu
• Keywords: Adsorption Force, Micro-Gripper, PLC Controller, Pneumatic Control System

References

[1] T. Sato, Micro/nano manipulation world, Proceedings of the IEEE International Conference on Intelligent Robots and Systems, pp.834-841, (1996).

[2] R. Murthy, A. Das, and D. Popa, Multiscale Robotics Framework for MEMS Assembly, " in 9th International Conference on Control, Automation, Robotics and Vision( ICARCV , 06), 2006, pp.1-6.

DOI: 10.1109/icarcv.2006.345058

[3] Y. Ge, J. A. Gaines, and B. J. Nelson, A flexible experimental workcell for efficient and reliable wafer-level 3D micro-assembly , in Proceedings of IEEE International Conference on Robotics and Automation(ICRA), 2001, pp.133-138.

DOI: 10.1109/robot.2001.932542

[4] S. K. Nah, and Z. W. Zhong, A microgripper using piezoelectric actuation for micro-object manipulation, Sensors and Actuators a-Physical, vol. 133, no. 1, pp.218-224, Jan 8, (2007).

DOI: 10.1016/j.sna.2006.03.014

[5] M. N. M. Zubir, and B. Shirinzadeh, Development of a Compliant-Based Microgripper for Microassembly, Proceedings of 2008 Ieee/Asme International Conference on Mechatronic and Embedded Systems and Applications, pp.522-527, (2008).

DOI: 10.1109/mesa.2008.4735754

[6] Z. Zhang, J. Zhang, H. Li, and W. Liu, Structure Design and Application of Micro-gripper in Cryogenic Target Assembly, in IEEE International Conference on Computer Science and Automation Engineering, zhangjiajie, (2012).

DOI: 10.1109/csae.2012.6272640

[7] J. Zhang, Z. Zhang, D. Xu, and W. Zhang, Aligning Micro-gripper to Ring Object in High Precision with Microscope Vision, in IEEE International Conference on Computer Science and Automation Engineering, shanghai, 2011, pp.123-127.

DOI: 10.1109/csae.2011.5952648