Question

.7. A punch press is fitted with a flywheel capable of furnishing 3000 N-m of energy during quarter of a
revolution near the bottom dead centre while blanking a hole on sheet metal. The maximum speed of
the flywheel during the operation is 200 r.p.m. and the speed decreases by 10% during the cutting
stroke. The mean radius of the rim is 900 mm. Calculate the approximate mass of the flywheel rim
assuming that it contributes 90% of the energy requirements

Answer 1

RESULTS:

mass of flywheel =31.996kg

WORKING METHODOLOGY: