Abstract
The transmission error that considered the error of belt side face in a helical synchronous belt drive using flanged pulleys under the quasi-static condition and transmitted torque was investigated theoretically for the case where the pulley was rotated in bidirectional operation and the pulley speed ratio was 1:1. The calculated transmission error in forward rotation results from axial belt movement due to the error of belt side face when the belt comes into contact with the pulley flange, and that over a period of one rotation of the belt occurs. The transmission error in reverse rotation is generated by a change in the belt tension under transmitted torque and by the difference in axial belt movements between the driving and driven sides, and the quantity of that is different by the pulley stop position in forward rotation.
