A General Modification Theory for Double-Enveloping Hourglass Worm Drives

Abstract:

A universal modification theory is developed for all kinds of hourglass worm drives, no matter what shape the generating surface of the worm is. Based on the theory established, toroidal worm drives can be classified into two main categories: with singular points and without singular points. That is to say, the unmodified hourglass worm gearing is merely a special case of the modified one in essence. Furthermore, the meshing characteristics of a double-enveloping toroidal worm drive are entirely up to the situation of the solution of the meshing equation of the second envelope.

• Periodical: Key Engineering Materials (Volume 486)
• Pages: 279-282
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.486.279
• Online since: July 2011
• Authors: Ya Ping Zhao, Tian Chao Wu
• Keywords: Double-Enveloping, Meshing Equation, Modification, Worm Drive

References

[1] Lin Qi, Yaxiong Zhang, et al. Worm Drives Design, China Machine Press, Beijing, 1987.

[2] Xuezhu Dong. Design and Modification of Hourglass Worm Drives, China Machine Press, Beijing, 2004.

[3] Xuezhu Dong. Theoretical Foundation of Gears Meshing. China Machine Press, Beijing, 1989.

[4] Yaping Zhao, Wenjun Wei, et al. A kind of dual tori double-enveloping toroidal worm pair. China Patent. 2010. ZL 200920084461.6.

[5] Yaping Zhao, Daizhong Su, et al. Meshing analysis and technological parameters selection of dual tori double-enveloping toroidal worm drive. Mechanism and Machine Theory, 45 (2010): p.1269–1285.

DOI: 10.1016/j.mechmachtheory.2010.04.004

[6] Yaping Zhao, Daizhong Su, et al. Mesh theory of angle modified dual tori double-enveloping toroidal worm drive. Science China Technological Sciences, 53(2010): p.1913–1927.

DOI: 10.1007/s11431-009-3156-8