Mechanics of Hairspring in Mehanical Watch Movement

Abstract:

Hairspring is a fine spiral spring, which is the key component in mechanical watch movement for timekeeping. According to literatures, there are only few studies on hairsprings or spiral springs. Using the Castiliago’s method, the mechanics of hairspring is studied in details. And Computer simulation with Matlab® and experimental validation are also conducted to show the spring frequency. Experiment shows that the theoretical analysis and computer simulation can be used to guide and facilitate the design of hairspring or spiral spring.

• Periodical: Applied Mechanics and Materials (Volumes 117-119)
• Pages: 252-255
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.117-119.252
• Online since: October 2011
• Authors: Long Han Xie, Ruxu Du
• Keywords: Hairspring, Mechanical Watch Movement, Mechanics Analysis

References

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[2] Spring Manufacturers Institute, Handbook of Spring Design, pp.30-34.

[3] Y. H. Zhang and H. H. Liu, Spring Handbook (in Chinese), Chinese Mechanical Engineering Press, pp.407-418, (1997)

[4] M. Shimoseki, T. Hamano, and T. Imaizumi, FEM for springs, Springer, Berlin, New York, (2003)

[5] http://en.wikipedia.org/wiki/Castigliano's_method

[6] Bao-lian Fu, "On the Modified Castigliano's Theorem," Applied Mathematics and Mechanics, Vol. 5, No. 2, pp.1263-1272, 1985.

DOI: 10.1007/BF01895122