The paper presents a new procedure to design a two-pulley synchronous belt transmission connecting, with no belt tensioner, two parallel-axis shafts with a variable velocity ratio. The procedure takes into account the limited number of choices for pitch and length of off-the-shelf synchronous belts, which translates into the need of fine-adjusting either the center distance or the law of motion. Different from other approaches reported in the technical literature, the suggested method is based on the numerical solution of a set of functional equations. A numerical example shows the application of the proposed method to a case study.

Issue Section:
Research Papers
Keywords:
belts, design engineering, power transmission (mechanical), pulleys, shafts, synchronous belt transmission, variable velocity ratio, noncircular toothed pulleys
Topics:
Belts, Design, Pulleys, Timing belts
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Copyright © 2008
 by American Society of Mechanical Engineers
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