Synchronous belt drives are widely used in various machines in order to transmit rotation accurately and synchronously. In these machines, idlers are commonly used to increase the angle of contact on the pulley and to avoid obstacles. However, the generating source of the transmission error under a transmission force with an idler remains unclear. In the present study, transmission error over a period of one pitch of the pulley was investigated both theoretically and experimentally for a synchronous belt drive attached an idler when a transmission force acted on the belt span. The experimental results agree closely with the computed results. The transmission error is greatly affected by change in the meshing state in the incomplete meshing sections. The idler position at which the transmission error is reduced exists even if the transmission torque increases. In addition, transmission error is reduced when the helix angle is increased.
Influence of Idler on Transmission Error in Synchronous Belt Drives (Under Transmission Force)
Contributed by the Power Transmission and Gearing Committee for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received July 2001. Associate Editor: R. F. Handschuh.
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Makita, K., Kagotani, M., Ueda, H., and Koyama, T. (June 11, 2003). "Influence of Idler on Transmission Error in Synchronous Belt Drives (Under Transmission Force) ." ASME. J. Mech. Des. June 2003; 125(2): 404–410. https://doi.org/10.1115/1.1564072
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