Design a suitable ordinary rigid flange coupling to connect an electric motor to a reduction gear of a machine. The motor has a rated output of 80 hp at 600 rpm. Working stresses in materials to be used for different parts are
Flange (C.I): shear 1700 N/cm2 compression 8400 N/cm2
Shaft (M.S) : Shear 4750 N/cm2
Bolt, Key (M.S): Shear 5800 N/cm2, compressions 9000 N/cm2.
These values take into account the service factor and w weakening effect of the keyway.
Square keys are recommended for fixing the flanges on the shafts. For your calculations you may assume
Number of bolts = 4
Outside diameter of hub = 2d
P.c.d. of bolts = 3d
Width and depth of key = d/5
where d is the diameter of the shaft.
Make a fully dimensioned sketch of the coupling (one view only)