EPICYCLIC GEAR TRAIN AND HOLDING TORQUE APPARATUS
Epicyclic gearing or planetary gearing is a gear system consisting of one or more outer gears (planet gears), revolving about a central gear (or sun gear). The aim of the apparatus is to calculate and experimentally observe the angular velocity ratios of epicyclic gear train. Also experimentally obtain the torque values of different gears, and compare input torque values
Planetary Gear Train :- Sun Gear 30 Teeth, Planet Gear 20 Teeth (3 No's) and Ring/Internal Gear With 70 Teeth
Torque and RPM measurement
i) Sun Gear and Input torque Motor current calibrated for motor torque with Digital RPM Indicator
ii) Planet torque -Pulley of 180 mm dia & spring balance.
iii) Ring gear-Pulley, 180 m dia & spring balances.
Drive Motor 1 HP DC, 1380 RPM motor, driving the sun gear.
The gear box has transparent casing to view the working of sun, planet and ring gears.