What are different types of gears?
Read on to learn the different types of gear and the applications and industries that utilize them.
- Spur Gear. Spur gears transmit power through shafts that are parallel.
- Helical Gear.
- Double Helical Gear.
- Herringbone Gear.
- Bevel Gear.
- Worm Gear.
- Hypoid Gear.
How are types of gears determined?
To broadly classify types of gears by their tooth shape, there are involute tooth shape, cycloid tooth shape and trochoid tooth shape. Among these, involute tooth shape is most commonly used.
What is the history of gears?
Gears are considered as one of the oldest equipment known to mankind. The origin of gears goes down to the Chinese South-Pointing Chariot in the 27th Century B.C. This chariot was known to pointing to the south no matter how it was turned.
When was the first gear made?
Some historians believe gears date back to at least the 27th century B.C. when they were used in a chariot in China. The ancient Greeks, including Aristotle, also described gear-like devices. Greek mathematician Hero of Alexandria was the first to write specifically about gears in 50 A.D.
Who invented gears and pulleys?
Archimedes
The first block and tackle pulley was designed by a Greek mathematician and inventor over 2,000 years ago. The mathematician’s name was Archimedes. Archimedes lived in Sicily, an island that is part of present-day Italy. He invented many tools for use in work, war, and everyday life.
What is the purpose of gears?
Gears are mechanisms that mesh together via teeth and are used to transmit rotary motion from one shaft to another. Gears are defined by two important items: radius and number of teeth. They are typically mounted, or connected to other parts, via a shaft or base.
What are the application of gears?
This type of gear is used for a wide range of speed ratios in a variety of mechanical applications, such as clocks, pumps, watering systems, power plant machinery, material handling equipment, and clothes washing and drying machines.
What are advantages of gears?
Gears use the principle of mechanical advantage, which is the ratio of output force to input force in a system. For gears, the mechanical advantage is given by the gear ratio, which is the ratio of the final gear’s speed to the initial gear’s speed in a gear train.
Who invented the involute gear?
In 1760 the Swiss mathematician Leonhard Euler recommended another teeth type: the involute gear was born.
Who invented helical gears?
Double helical gears, invented by André Citroën and also known as herringbone gears, overcome the problem of axial thrust presented by single helical gears by having teeth that set in a ‘V’ shape. Each gear in a double helical gear can be thought of as two standard, but mirror image, helical gears stacked.
What is the creation of gears?
Creation of Gears. By pushing the teeth of the trailing shaft with the teeth of the driving shaft, the certainty of a strong transmission is assured. This is called a cylindrical gear and the reference cylinder on which the teeth are carved is the pitch cylinder. Spur gears are one type of cylindrical gears.
What are the different types of gears and their applications?
Table 2 – Industries and Applications of Gears by Type Type of Gear Common Industries and Applications Spur Clocks Pumps Watering systems Household Helical Same as spur gears but with greater load Bevel Pumps Power plants Material handling sys Worm Instruments Lifts and elevators Material
What is a gear pair configuration?
This type of gear pair configuration removes the need for an idler gear in applications which require the same direction of rotation in the driving and driven gear.
What are the principal axes configurations employed by gears?
There are three principal axes configurations employed by gears: As indicated by the name, parallel configurations involve gears connected to rotating shafts on parallel axes within the same plane.