Hammaspyörävaihteisto

Hammaspyörävaihteisto, or gear transmission in English, is a mechanical system used to transmit rotational motion and torque between two or more rotating shafts. This is achieved through the engagement of gears, which are toothed wheels. The primary function of a gear transmission is to modify the speed and torque of a rotating input shaft to produce a different speed and torque at the output shaft.

The ratio of the number of teeth on the driving gear to the number of teeth on the driven gear determines the gear ratio. A higher gear ratio means the output shaft rotates slower but with higher torque, while a lower gear ratio results in a higher output speed and lower torque. Gear transmissions can be classified into various types, including simple, compound, and planetary gear sets. Simple gear trains consist of a single set of gears. Compound gear trains involve multiple gear sets on intermediate shafts. Planetary gear sets, also known as epicyclic gear trains, offer compact and versatile solutions with a sun gear, planet gears, and a ring gear.

These transmissions are fundamental components in a wide range of machinery and applications, from automotive transmissions and industrial machinery to clockwork mechanisms and robotics. They play a crucial role in optimizing the performance and efficiency of power transmission systems by allowing engines or motors to operate at their most efficient speeds while delivering the required torque to the driven components. The design and selection of a hammaspyörävaihteisto depend on factors such as the required speed reduction, torque capacity, efficiency, and physical constraints of the application.