Micro Parts Feeding Heads: Shinichi Hirai Contact: Atsushi Mitani Date: 2002 - 2014 Mailing address: Dept. Robotics, Ritsumeikan Univ. Kusatsu, Shiga 525-8577, Japan Supported by: Associated lab/group: Sugiyama Lab.(Dept. Micro System Technology)

Project Description

The goal of this project is to realize vibration drive of micro electric parts such as chip condensers and resisters. We apply asymmetric surface (saw-tooth surface) with symmetric vibration (sinusoidal vibration) to realize one-directional motion of micro parts. We are analyzing dynamics of micro parts during feeding. Micro parts used in portable electric devices become smaller and smaller; from 2012 (2.0mm in length and 1.2mm in width) parts to 0402 (0.4mm in length and 0.2mm in width) parts recently. Conventional feeding using asymmetric vibration or elliptic vibration reduces efficiency in micro parts feeding. Here we apply asymmetric surface (saw-tooth surface) with symmetric vibration (sinusoidal vibration) to realize one-directional motion of micro parts. We are analyzing dynamics of micro parts during feeding considering inertial force, friction force, adhesion force, and electrostatic force.

Feeding of micro parts

Selective feeding (specific parts move while the others do not)

Personnel

	Name	Title	Degree
	Atsushi Mitani	Sapporo City University	Ph.D
	Toshiatsu Yoshimura	Graduated	Master of Eng.
	Naoto Sugano	Graduated	Master of Eng.
	Kouya Miura	Graduated
	Akira Uchida	Graduated
	Hideya Tsuji	Graduated

Publications

• Phuong Hoai Le, Thien Xuan Dinh, Atsushi Mitani, and Shinichi Hirai, Effect of Geometry Parameters of Saw-tooth Surface on the Feeding Velocity of Micro-parts, IEEJ Trans. on Electrical and Electronic Engineering, Vol.8, Issue S1, pp.S102-S105, 10.1002/tee.21925, Sept., 2013
• Phuong Hoai Le, Thien Xuan Dinh, Atsushi Mitani, and Shinichi Hirai, A Study on the Motion of Micro-Parts on a Saw-Tooth Surface by the PTV Method, Journal of System Design and Dynamics, Vol.6, No.1, pp.73-80, 10.1299/jsdd.6.73, Feb., 2012
• Phuong Hoai Le, Thien Xuan Dinh, Atsushi Mitani, and Shinichi Hirai, Experiment and Simulation of Micro-part Dynamics with Roughness Effect, IEEJ Trans. on Electrical and Electronic Engineering, Vol.7, Issue S1, pp.S173-S178, 10.1002/tee.21820, Dec., 2012
• Atsushi Mitani and Shinichi Hirai, Submillimeter Micropart Feeding Along an Asymmetric Femtosecond-Laser-Microfabricated Surface, Int. J. of Automation Technology, Vol.3, No.2, pp.151-156, 10.20965/ijat.2009.p0151, Mar., 2009
• Atsushi Mitani, Toshiatsu Yoshimura, and Shinichi Hirai, Feeding of Submillimeter-sized Microparts along a Saw-tooth Surface using only Horizontal Vibration: Effects of saw-tooth pitch, vibration frequency and humidity, International Journal of Automation Technology, Vol.1, No.1, pp.27-34, 10.20965/ijat.2007.p0027, Sept., 2007
• Atsushi Mitani, Naoto Sugano, and Shinichi Hirai, Microparts Feeding by a Saw-Tooth Surface, IEEE/ASME Transactions on Mechatronics, Vol.11, No.6, pp.671-681, 10.1109/TMECH.2006.886197, Dec., 2006

• Phuong Hoai Le, Thien Xuan Dinh, Atsushi Mitani, and Shinichi Hirai, Experiment of Micro-parts Feeding on Saw-tooth with the Effect of the Surface Geometry Parameters, Int. Conf. on Material, Mechatronics and Automation (ICMMA2013), pp.99-104, Singapore, Apr. 21-22, 2013
• Phuong Le, Thien Dinh, Atsushi Mitani, and Shinichi Hirai, Simulation Model for Sub-Millimeter Part Feeding on the Asymmetrical Saw-Tooth Surface with Air Drag, 2013 IEEE/ASME Int. Conf. on Advanced Intelligent Mechatronics (AIM 2013), pp.608-611, 10.1109/AIM.2013.6584159, Wollongong, Australia, July 9-12, 2013
• Atsushi Mitani, Phuong Le, Yasutaka Matsuo, and Shinichi Hirai, Improvement of Sawtooth Shape Generated By Anisotropic Etching Process of Single-Crystal Silicon For Microparts Feeding Using Horizontal and Symmetric Vibrations, 2013 IEEE/ASME Int. Conf. on Advanced Intelligent Mechatronics (AIM 2013), pp.967-972, 10.1109/AIM.2013.6584219, Wollongong, Australia, July 9-12, 2013
• Paul Umbanhowar, Thomas H. Vose, Atsushi Mitani, Shinichi Hirai, and Kevin M. Lynch, The Effect of Anisotropic Friction on Vibratory Velocity Fields, Proc. IEEE Int. Conf. on Robotics and Automation, pp.2584-2591, 10.1109/ICRA.2012.6225273, St. Paul, U.S.A., May 14-18, 2012
• Phuong Le, Xuan Thien Dinh, Atsushi Mitani, and Shinichi Hirai, Experiment and Simulation of Micro-parts Dynamics with Roughness Effect, 2012 IEEE/ASME Int. Conf. on Advanced Intelligent Mechatronics (AIM 2012), pp.586-591, 10.1109/AIM.2012.6265939, Kaohsiung, Taiwan, July 11-14, 2012
• Atsushi Mitani and Shinichi Hirai, Feeding Submillimeter Microparts Using An Asymmetric Fabricated Surface With Symmetric Vibrations: Effects of Feeder Surface Materials on Feeding, Int. Conf. on Material, Mechatronics and Automation (ICMMA2011), pp.1297-1302, 10.4028/www.scientific.net/KEM.467-469.1297, Melbourne, Australia, Jan. 16-17, 2011
• Atsushi Mitani and Shinichi Hirai, Evaluation of Feeder Surface Materials for Microparts Feeding Using an Asymmetric Fabricated Surface With Symmetric Vibrations, Proc. IEEE Int. Conf. on Mechatronics (ICM2011), pp.13-18, 10.1109/ICMECH.2011.5971277, Istanbul, Turkey, Apr. 13-15, 2011
• Phuong Hoai Le, Thien Xuan Dinh, Atsushi Mitani, and Shinichi Hirai, Measurement of the Motion of Micro-Parts on a Vibratory Surface, International Tribology Conference, Hiroshima, Japan, Oct. 30 - Nov. 3, 2011
• Phuong Hoai Le, Thien Xuan Dinh, Atsushi Mitani, and Shinichi Hirai, A Study on the Motion of Micro-parts on a Saw-tooth Surface by the PTV Method, Proc. ASME 2011 Int. Mechanical Engineering Congress & Exposition (IMECE2011), Vol.7, pp.985-990, 10.1115/IMECE2011-64689, Denver, Colorado, U.S.A., Nov. 11-17, 2011
• Atsushi Mitnai and Shinichi Hirai, Evaluation of Asymmetric Surfaces by Femtosecond Laser Process for Microparts Feeding, Proc. World Tribology Congress 2009, Kyoto, Japan, Sept. 6-11, 2009
• Atsushi Mitani and Shinichi Hirai, Analysis of Contact between Feeder Surface and Microparts Based on Measurements for Microparts Feeder Using an Asymmetric Surface, 2008 IEEE Conf. on Automation Science and Engineering, pp.720-725, 10.1109/COASE.2008.4626469, Washington D.C., U.S.A., Aug. 23-26, 2008
• Atsushi Mitani, Toshiatsu Yoshimura, and Shinichi Hirai, Feeding of Submillimeter Microparts Along an Asymmetric Fabricated Surface by Double-Pulsed Femtosecond Laser Process, Third Asia International Symposium on Mechatronics (AISM2008), Sapporo, Japan, Aug. 27-31, 2008
• Atsushi Mitani and Shinichi Hirai, Application of Asymmteric Surface Fabricated by Femtosecond Laser Process for Microparts Feeding, SPIE International Symposium on Optomechatronic Technologies (ISOT 2008), San Diego, CA, U.S.A., Nov. 17-19, 2008
• Atsushi Mitani, Toshiatsu Yoshimura, and Shinichi Hirai, Feeding of Submillimeter-sized Microparts along a Saw-tooth Surface using only Horizontal and Symmetric Vibration, JSME-KSME Joint International Conference on Manufacturing, Machine Design and Tribology (ICMDT2007), Sapporo, Japan, July 1-4, 2007
• Atsushi Mitani, Toshiatsu Yoshimura, and Shinichi Hirai, Feeding of Submillimeter-sized Microparts along a Saw-tooth Surface using only Horizontal Vibration: Effects of saw-tooth pitch, vibration frequency, and humidity, 2007 IEEE/ASME Int. Conf. on Advanced Intelligent Mechatronics (AIM2007), 10.1109/AIM.2007.4412424, ETH Zurich, Switzerland, Sept. 4-7, 2007
• Atsushi Mitani, Toshiatsu Yoshimura, and Shinichi Hirai, Feeding of Submillimeter-Sized Microparts Along a Saw-Tooth Surface Using Only Horizontal Vibration: Analysis of Convexities on the Surface of Microparts, The 3rd annual IEEE Conference on Automation Science and Engineering (CASE 2007), pp.69-76, 10.1109/COASE.2007.4341707, Scottsdale, Arizona, U.S.A., Sept. 22-25, 2007
• Atsushi Mitani, Naoto Sugano, and Shinichi Hirai, Micro-Parts Feeding by a Saw-tooth Surface, Proc. IEEE Int. Conf. on Robotics and Automation, pp.825-831, 10.1109/ROBOT.2005.1570219, Barcelona, Spain, Apr. 18-22, 2005

• Phuong Le and Shinichi Hirai, Investigation of the Effect of Dimensionless Geometry of Saw-tooth Surface on the Micropart Motion, International Workshop on Soft and Flexible Micro/Nano System Technology (SF-MINAS 2013), Griffith University, Gold Coast Campus, Australia, July 12-14, 2013
• Atsushi Mitani, Hideya Tsuji, Toshiatsu Yoshimura, and Shinichi Hirai, Feeding of Submillimeter Microparts Along an Asymmetric Surface Microfabricated by Femtosecond Laser Process, IEEE/RSJ Int. Conf. on Intelligent Robots and Systems (IROS 2008), Nice, France, Sept. 22-26, 2008

Notes

Album	Feeding along surface fabricated by femto second laser (wmv 2.6MB)	Feeding of 2012 chip condensers (positive direction) (mpg 0.7MB)	Feeding of 2012 chip condensers (negative direction) (mpg 0.9MB)	Selective Feeding (left:condensers right:silicon chips) (mpg 1.6MB)
Selective Feeding (left:condensers right:silicon chips) (mpg 1.1MB)

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