Explain Gear technology
What is Gear Technology?
Nobody denies the fact that gears play a critical role in the world we live in. It ranges from the large-scale deep-sea oil and gas drilling and industrial manufacturing the world, to small scale applications like the conveyor belt in your local supermarket and even the tiny gearbox in your cars windscreen wipers, gears are invaluable. Over the last decade, the global market for gearboxes and geared motors has seen year-on- year growth. However, an increasing demand for high-precision gearing systems for broadcast and aerospace, is set to provide growth for the students of Best Engineering Colleges in Jaipur.
Gear system technology
Now, there are variety of electrical configurations to choose from. Before widespread electrical innovation in induction motor technology and the advent of Variable Speed Drives (VSDs), controlling the output speed of a system was achieved through the use of gears. In other words, the final output speed of a typical squirrel-cage motor running at 1440rpm can be reduced as required by varying the gear reduction ratio. This increases flexibility by enabling the same motor to be used by the students of top engineering colleges in Jaipur for different speed applications without a VSD. Now, it is possible to control the speed of a motor using VSDs. However, the drive cannot replace the other benefits, torque multiplication and inertia matching. It allows a relatively small, low power, motor to move and accurately control a large load, hence reducing running costs along with the general machine weight and size.
1. Spur gear
It is a disk with teeth projecting radially. They are used in washing machines, cars, clocks, industrial cutting machines and power plants, and many more. It offers easy and cheap installation. They offer a good power transmission efficiency and a constant velocity ratio, with the ability to transmit a large amount of power to the experts of Top Mechanical Engineering Colleges in Jaipur. There are few considerations for people using this basic gear type and the closely related helical gear. Generally, these gears have significant backlash. Although, they can be fitted with backlash compensation, this accuracy is not maintained throughout the gears life without adjustment.
Spur gears can be noisy at high speed. Also, while they have the ability to be variably configured, and can occupy a large footprint especially in high ratios, that are due in part to each individual gear shaft. It requires support in its own bearings.
2. Worm gear
Due to its earthworm like movement, it is known as the worm gear. The worm drive consists of two main parts including the screw shaped worm gear and the larger spur-shaped worm wheel. Meshed perpendicular to the axis of rotation, the worm gear provides a compact solution to the students of Best Engineering Colleges in Jaipur and a large single-stage gear reduction can be achieved. However, the larger ratios suffer from low efficiency.
The design of a worm gear is designed in such a way that a large hollowshaft can be bored into the central cylinder of the worm wheel that makes it convenient to pass via cables and services. With a few modifications, this gear type offers relatively good precision.
3. Planetary gears
The epicyclic gears are more commonly known as planetary gears. They are mounted in such a way that a numbers of gears, typically three to five, rotate like planets around a central sun gear, and surrounded by an outer annular ring gear. Planetary gears offer a high-power density, efficiency and, as a result of their design, are very
compact. Accuracy can be high and helps you achieve backlash that are down to 1arcmin. By combining several stages of gearing, high reduction ratios can be achieved by the experts of best mechanical engineering colleges in Jaipur with the maximum single stage ratio typically being 10:1. Generally, planetary gears are more expensive than helical gears and can require more maintenance owing to a higher part count.
4. Strain wave gear
The strain wave gear is also known as harmonic drive. It is good in accuracy and quality. Strain wave is essential for applications that require the highest power accuracy and density. They are important for demanding applications like broadcast motion control, oil and gas extraction, robotics, metrology, aerospace, and high precision industrial machine tools. A strainwave gear consists of three major parts including an outer Circular Spline, a fixed ring with gear teeth on the inside, a flexible ring with gear teeth on the outside, and an elliptical centrally mounted Wave Generator attached to an input shaft. They are unique and offers a very high single stage ratios to the experts of the list of mechanical engineering colleges in Jaipur, ranges from 30:1 up to 320:1, in the same space that a planetary gear which can only achieve a 10:1 ratio. This impressive feat is made impressive while maintaining a compact size, zero backlash, a very low weight, a low component count and very high torque levels. The central shaft provides the largest hollowshaft possible on a concentric gear. These characteristics are resulted in Harmonic Drive that are being chosen for inclusion by NASA on the Mars Rover.
It is clear that the world of gears is more complex. Making the right choice of transmission for your given application can drastically modify operational efficiency, energy usage and ultimately the total cost of ownership. This is becoming an ever more essential aspect of the decision-making process while moving towards cost saving oriented high-accuracy applications.
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