Double Helical Synchronous Belt Transmission Design

Abstract:

The meshing impact noise caused by the gradually engagement between double helical synchronous belt and the pulley was reduced due to its spiral angle effect. Therefore, double helical synchronous belt transmission receives much concern with its excellent characteristics of de-noising, low transmission error and high carrying capacity. The profiles of synchronous belt and belt pulley were studied based on conjugate-curvature high degree contact meshing theory under the circumstance that the pitch of belt and belt pulley are identical. The higher contact strength of the belt teeth and a smaller clearance in the contact point adjacent area were ensured with Hertz contact theory as the synchronous belt is in contact with pulley. And then a conjugated arc tooth profile with two-step contact and three-step adjacent gap infinitesimal was proposed based on the simple easy to processing method, which was adopted as main parameters for double synchronous belt and pulley’s normal teeth profile. The three-dimensional transmission model was built and the static nonlinear contact analysis was done with finite element software ANSYS. Finally, the noise experiment was conducted on the high speed test bench to compare the noise reduction effect between double helical synchronous belt and straight tooth timing belt with the identical end face profile. The simulation and experiment result show that the double helical synchronous belt transmission can reduce noise level by 11dB approximately compared with straight tooth timing belt transmission.

• Periodical: Materials Science Forum (Volumes 800-801)
• Pages: 672-677
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.800-801.672
• Online since: July 2014
• Authors: Jian Hua Guo*, Hong Yuan Jiang, Yi Zhen Wu, Wen Ya Chu, Qing Xin Meng
• Keywords: Double Helical Synchronous Belt Transmission, High Degree Contact Meshing, Meshing Compact Noise, Synchronous Belt Contact Strength, Tooth Profile Stress Analysis

References

[1] The Japanese drive professional technology committee Qi Bin translated. Belt drive and precise delivery of practical design [M]. Beijing: Chemical Industry Press, (2013).

[2] Weiming Zhang and Tomio Koyama. A Study on Noise in Synchronous Belt Drive (Experimental and Theoretical Analysis of Impact Sound) [J]. J. Mech. Des, 2003, 125 (4): 773-778.

DOI: 10.1115/1.1626131

[3] Koyama T., et all. Design of transmission mechanisms by helical toothed belts, General remarks. Present state and future prospects of helical toothed belts [J], J. Mech. Des, 1999, 43(7): 18-19.

[4] Michael J W Gregg. Synchronous Drive Belt Using Helical Offset Teeth. [C]. Paper 55 of 155th Meet. Of Rub. Div. Am. Chem. Soc., Chicago Illinois (1999).

[5] Liu heran, Zhaodongfu andSongyude. Modern Theories of Gear Meshing[M]. Zhejiang University press, (2008).

[6] Guo Jianhua Zheng Na, JiangHongyuan AoHongRui. New herringbone gear synchronous belt bearing based on ANSYS analysis [J]. Journal of mechanical drive, 2012 (2): 60-62.

[7] Jianhua Guo, Hongyuan Jiang, Yanhui, Hangang. A new design of tooth profiles increases synchronous belt's fatigue life [C]. Proceedings of IMECE08 2008 ASME International Mechanical Engineering Congress and Exposition, October 31-November 6, 2008, Boston, MA, USA. IMECE2008-66301.