As in Ex. 15?4, design a cylindrical worm-gear mesh to connect a squirrel-cage induction motor to a liquid agitator. The motor speed is 1125 rev/min, and the velocity ratio is to be 10:1. The output power requirement is 25 hp. The shaft axes are 90? to each other. An overload factor Ko (see Table 15?2) makes allowance for external dynamic excursions of load from the nominal or average load Wt. For this service Ko = 1.25 is appropriate. Additionally, a design factor nd of 1.1 is to be included to address other unquantifiable risks. For Probs. 15?15 to 15?17 use the AGMA method for (Wt G) all whereas for Probs. 15?18 to 15?22, use the Buckingham method. See Table 15?12.
This question was answered on: Jul 11, 2017
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