A riveting machine is driven by a constant torgue 3kW motor. The moving parts including the flywheel are equivalent to 150 kg at 0.6 m radius. One riveting operation takes 1 second and absorbs 10000 N-in of energy. The speed of the flywheel is 300 rpm before riverting. Find the speed immediately after riveting. How many rivets can be closed per minute? -

Given:

P= 3kW; m = 150kg; r= 0.6m; El= 10000J; N1 = 300 rpm

Solution:

It is said that riveting can only be done when speed of the flywheel is 300rpm. When the riveting is done, the speed of the flywheel decreases, hence some time should be given to the …