Determine the ratio of speeds of the driving and driven shafts.

Question

An epicyclic speed reduction gear schematic is shown in fig. 4(c). Compound wheel B-C is free to rotate on pin A connected to driving shaft. Wheel ‘C’ meshes with fixed wheel ‘E’ and wheel ‘B’ meshes with wheel ‘D’ keyed to driven shaft.

If number of teeth on wheels are T_b=27 , T_c=30 , T_d=24 , T_e=21  determine the ratio of speeds of the driving and driven shafts.

 

Answer 1

In an epicyclic gear train