The robot gearbox contains a worm drive mechanism. This consists of a
worm gear fixed to the motor and a pinion gear fixed to the axle.
It takes several complete turns of the motor to give one complete turn of the
axle. It is therefore a good mechanism for reducing speed. The mechanism
also converts a small turning force into a larger turning force.
Find out how the size of the pinion gear affects the turning speed and turning
force in a worm drive mechanism.
Small pinion gear
Large pinion gear
Small weight
weight is lifted quickly
weight is lifted slowly
Large weight
weight starts to lift but keeps slipping back. Motor starts to getand glows red.
weight is lifted slowly (at the same speed as the hot small weight).
The robot gearbox contains a worm drive mechanism. This consists of a
worm gear fixed to the motor and a pinion gear fixed to the axle.
It takes several complete turns of the motor to give one complete turn of the
axle. It is therefore a good mechanism for reducing speed. The mechanism
also converts a small turning force into a larger turning force.
