The Institute of Precision Engineering - An Introduction

1. The Institute of Precision Engineering - An Introduction Ruxu Du, Ph.D. Professor and Director Institute of Precision Engineering The Chinese University of Hong Kong January 2007 http://www.ipe.cuhk.edu.hk/

2. CUHK • The Chinese University of Hong Kong is celebrating her 43th anniversary now http://www.ipe.cuhk.edu.hk/

3. CUHK • The numbers • 9,000 undergraduate and 5,000 graduates • 8 faculties, 62 departments, 820 professors • HK$4.2 billion (US$600 million) annual budget • HK$1.0 billion (US$125 million) annual research grants http://www.ipe.cuhk.edu.hk/

4. DU • The academic career of Prof. R. Du • 1989, Ph.D., the University of Michigan • 1991, Assistant Professor, the University of Windsor (Windsor, Ontario, Canada) • 1995, Associate Professor, the University of Windsor • 1999, Associate Professor, the University of Miami (Coral Gables, Florida, USA) • 2001, Professor, the Chinese University of Hong Kong • 2006, Founding director, Institute of Precision Engineering, CUHK • More updated information can be found at our website at www.acae.cuhk.edu.hk/~rdu http://www.ipe.cuhk.edu.hk/

5. DU • Research funding: • Up to date: HK$92,000,000 (US$11,500,000) • Annual budget in 2005-06: HK$24,000,000 (US$3,000,000) • Current team members: • 4 Professors • 8 Post Doctor Fellows / Visiting Scholars • 5 Research Associates / Assistants • 6 Ph.D students • 6 M.Phil. students • 10 in our Shenzhen Operation 1 • 16 in our Shenzhen Operation 2 http://www.ipe.cuhk.edu.hk/

6. DU • Publications: • International journal publications: 70 • International conference publications: 82 • Book chapters: 7 • Patents: 5 • Services • Associate Editor, Int. J. of Control and Intelligent Systems • Associate Editor, Computer Aided Design and Applications • Member of Editorial Board, Int. J. of Power and Energy Systems • Chair, 2nd Asian International Conference on Mechantronics (2006) http://www.ipe.cuhk.edu.hk/

7. 2002 2006 2007 2004 2005 2003 The team http://www.ipe.cuhk.edu.hk/

8. Research Directions • Condition monitoring, fault diagnosis and automatic control • Design • Metal forming press design • Air conditioning system design • Industrial sewing machine design • Footwear design • Manufacturing • Metal forming • Metal cutting • Plastic injection molding http://www.ipe.cuhk.edu.hk/

9. Technology Inventions • Condition monitoring and fault diagnosis • New methods • 4D holospectrum (1994) • Snake Skeleton Graph (2002) • Fuzzy Transition Probability (2004) • Bio-inspired method (2006) • Applications • Machining (1985 ~ 1995) • Large rotating machinery (1994) • Metal forming (1999 ~ 2005) • Plastic injection molding (2003) • Air conditioning systems (2005) http://www.ipe.cuhk.edu.hk/

10. Technology Inventions • Industry sewing machine and sewing process Modeling and simulation Needle heating Needle cutting http://www.ipe.cuhk.edu.hk/

11. Diagnosis based on thermo energy distribution On-line monitoring based on SVM Technology Inventions • Sheet metal stamping process monitoring and diagnosis Inverse FEM software Current project: design optimization http://www.ipe.cuhk.edu.hk/

12. Technology Inventions • Design a new controllable mechanical metal forming press First Prototype Second Prototype Current projects: build a 300 ton prototype http://www.ipe.cuhk.edu.hk/

13. Refrigerant storage for instant response On-spot cooling Technology Inventions • Design a solar air conditioner Bubble pump powered by solar vacant tube http://www.ipe.cuhk.edu.hk/

14. Technology Inventions • Other projects • Virtual label: an expert system for textile label pattern editing and simulation • Shoe design: design custom-made athletic and causal footwear • Condition monitoring and control of plastic injection molding process • Tool condition monitoring in machining • …… http://www.ipe.cuhk.edu.hk/

15. New Projects • Do you know what mechanism is this? The watch project http://www.ipe.cuhk.edu.hk/

16. New Projects • The watch project • The sponsors: • Innovation and Technology Commission, Hong Kong • Hong Kong Watch Manufacturers Association • Federation of Hong Kong Watch Trade and Industry • Federation of Hong Kong Industry, Watch and Clock Council • The budget: HK$64 million (US$8 million) • The objective: Develop technologies and capabilities for design and manufacture high quality mechanical watch movements • The time: started on Jan. 1, 2006 for three years http://www.ipe.cuhk.edu.hk/

17. New Projects • The watch project • Selected R&D projects: • Dynamic modeling and design optimization • Virtual library • Signature analysis • Micro CNC gear hobbing machine • Ultra precision wire EDM machine • Nanospring • Micro assembly • Precision stamping • Six sigma quality management • ……. http://www.ipe.cuhk.edu.hk/

18. New Projects • Dynamic modeling of the Swiss lever mechanism • The kinematics does not satisfy the Lipschitz condition and hence, can only model by a set of 11 impulsive differential equations • Solving the equation set reveals the dynamical behavior of the mechanism Phase diagram of the balance wheel Phase diagram of the pallet fork http://www.ipe.cuhk.edu.hk/

19. New Projects • Virtual library English lever Daniel Co-axial Swiss lever http://www.ipe.cuhk.edu.hk/

20. New Projects • Signature analysis • Use FEM to find the modal frequencies • Use reassigned spectrogram to diagnose possible errors http://www.ipe.cuhk.edu.hk/

21. New Projects • Micro CNC gear hobbing machine CAD model of the machine Computer simulation of gear formation http://www.ipe.cuhk.edu.hk/

22. New Projects • Ultra precision wire EDM machine • Minimum wire size: 0.03 mm • Minimum resolution: 0.1 m • 3D EDM milling http://www.ipe.cuhk.edu.hk/

23. Thank you CUHK IPE Building able technologies of tomorrow http://www.ipe.cuhk.edu.hk/