JOURNAL BROWSE
Search
Advanced SearchSearch Tips
A Study on the Design of Dynamic System and Vibration Isolation System in a High-speed Press
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A Study on the Design of Dynamic System and Vibration Isolation System in a High-speed Press
Suh, Jin Sung; Jeong, Chel-Jea; Hyeon, Gi-Yong; Ryoo, Min;
  PDF(new window)
 Abstract
In a high-speed press, numerous moving links are interconnected and each link executes a constrained motion at high speed. As a consequence, high-level dynamic unbalance force and unbalance moment are transmitted to the main frame of the press, which results in unwanted vibration and significantly degrades manufacturing accuracy. Dynamic unbalance force and unbalance moment inevitably transmits high-level vibrational force to the foundation on which the press is installed. Minimizing the vibrational force transmitted to the foundation is critical for the protection of both the operators and the surrounding structures. The whole task should be carried out in two steps. The first step is to reduce dynamic unbalance based upon kinematic and dynamic analyses. The second step is to design and build an optimal vibration isolation system minimizing the vibrational force transmitted to the foundation. Firstly, the dynamic design method is presented to reduce dynamic unbalance force and moment. For this a 3D CAD software was utilized and a computer program was written to compute dynamic unbalance force and moment. Secondly, the design method for vibration isolation system is presented. The method for designing coil springs and viscous dampers are explained in detail.
 Keywords
Dynamic Balancing;Constraint Equation;Vibration Isolation;Transmissibility;Coil Spring;Viscous Damper;SPM(Strokes per Minute);
 Language
Korean
 Cited by
 References
1.
Kochev, I., 2007, General Method for Full Force Balancing of Spatial and Planar Linkages by Internal Mass Redistribution, Mechanism and Machine Theory, Vol. 22, No. 4, pp. 333-341.

2.
Berkof, R. S. and Lowen, G. G., 1971, Theory of Shaking Moment Optimization of Force-Balanced 4-Bar Linkages, ASME Journal of Engineering for Industry, Vol. 93, No. 1, Series B, pp. 53-60. crossref(new window)

3.
Bagci, C., 1979, Shaking Force Balancing of Planar Linkages with Force Transmission Irregularities Using Balancing Idler Loops, Mechanism and Machine Theory, Vol. 14, No. 4, pp. 267-284. crossref(new window)

4.
Lowen, G. G., Tepper, F. R. and Berkof, R. S., 1983, Balancing of Linkages-An Update, Mechanism and Machine Theory, Vol. 18, No. 3, pp. 213-220. crossref(new window)

5.
Kim, C., Lee. B., Kim, D. and Jung, I., 2005, Element Design of Balancing Shaft for Reducing the Vibration in Engine Module, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 15, No. 11, pp. 1268-1275. crossref(new window)

6.
Rivin, E. I., 1995, New Designs of Vibration Isolating Mountings and Carpets, Russian Engrg. Journal No. 2, pp. 48-53.

7.
DeBra, D. B., 1992, Vibration Isolation of Precision Machine Tools and Instrumensts, Annals of the CIRP, Vol. 41, No. 2, pp. 711-718. crossref(new window)

8.
Crede, C. E. and Ruzicka, J. E., 2002, Harris' Shock and Vibration Handbook, McGraw Hill.

9.
Vibration Control, 2000, Newport Corp. Catalog.

10.
Bulletin KDC/2, 2000, Korfund Dynamics Co.

11.
DeBra, D. B., 1984, Design of Liminar Flow Restrictors for Damping Pneumatic Vibration Isolators, Annals of the CIRP, Vol. 33, No. 1, pp. 533-541.

12.
De Gaspari, J., 2002, Hot Stuff, Mechanical Engineering, No. 12, pp. 32-35.

13.
Crede, C. E., 1961, Application and Design of Isolators, Shock and Vibration Handbook, Vol. 2, McGraw Hill, N.Y.

14.
Harris, B., 1980, Little Known Facts Affecting Teflon Fabric Bearing Life, SAE Paper 800676.

15.
Rivin, E. I., 2003, Passive Vibration Isolation, ASME Press, N.Y.

16.
Shabana, A. A., 2001, Computational Dynamics, 2nd Ed., John Wiley & Sons, Inc., New York.

17.
Rao, S. S., 2011, Mechanical Vibrations, 5th Ed., Prentice Hall, Inc.

18.
Juvinal, R. C. and Marshek, K. M., 2000, Fundamentals of Machine Component Design, 3rd Ed., John Wiley & Sons, Inc., New York.