Gear Design And Types. (7d)

INTRODUCTION Each machine consists in principle of three basic parts: a motor or another prime mover (that sets the machine in motion), an actuating mechanism (which is directly doing the needed work: digs a ditch, weaves cloth, peels potatoes, propels a ship, and so on), and a transmission that connects the first two parts. Sometimes, the transmission may be lacking, for example, in a fan the impeller is mounted  directly on the shaft of the electric motor. But in most cases, the transmission is indispensable, to match the speed of the mover with that of the actuator, to set in motion several…