Write the sketch, given, solution, final answer and 3D drawing.

 

The set of double-reduction gears shown on the figure, is driven by a pinion (Gear A) with a module of .05 inch, which rotates at 4000 rpm and has a pitch-line velocity of 15 ft/s. the second set of gears (Gears C and D) has a pitch-line velocity of 2.5ft/s and a module of 0.1 inch. Given that the reduction ration between the Gears A and B is to 12:1, and the reduction Ratio between Gears C and D is to be 10:1, Determine the following: a. The number of teeth on each gear b. The speed of Gears B, C, and D. C. The Center distances for Gears A and B and Gears C and D. (Note #1: Module is equivalent to Pitch Diameter over Number of Teeth) A H B D