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What is the science behind gears?
Gears are mechanical devices that transmit motion and power by meshing teeth or cogs. They work based on the principles of torque, speed, and force. The relationship between the size and number of teeth on interacting gears determine the gear ratio, which affects the speed and force of rotation.
How can gears change the size and direction of a force?
Gears change the size of a force by varying the number of teeth on the gears in contact. Larger gears transmit force over a larger area, reducing the pressure and increasing the force. Gears can change the direction of a force by meshing at an angle, causing the force to transfer to the desired direction.
What type of simple machine is a watch gears?
Watch gears are a type of simple machine known as a wheel and axle. The teeth on the gears interlock and transmit motion from one gear to another, allowing the watch to function and keep time accurately.
When do two gears rotate in the same direction or in the opposite direction?
Two gears rotate in the same direction when they are both either on the same side of the gear train (parallel arrangement) or they have the same number of teeth. They rotate in the opposite direction when one gear is driving another gear and they have a different number of teeth.
What type of machine is a wheel with jagged edges like teeth?
A wheel with jagged edges like teeth is typically found on a gear or sprocket in a machinery system. Gears and sprockets with teeth are used to transmit motion and power between components by engaging with other gears or chains. They are commonly used in various mechanical systems to control speed, torque, and direction of rotation.
Why should you avoid interference in gears?
Interference occurs when the addendum of the involute gear goes on the increased. When this occurs there is a increase in the toothspace and decrease in the teeth of the particular gear. So with reduction in the toothspace there occurs a slipping in the involute gear. Inorder to reduce that particular condition we have to avoid interference in gears.
What is the difference between a gear and an involute spline?
gears mesh with gears both have external teeth where as spline meshes with internal teeth .both are used to transfer torque.
Why not cycloidal gears used instead of involute gears in all places?
as it is known there two types of gear tooth available. but only the involute gear tooth is used in every place. This is because the cycloidal gear tooth do not allow any tolerances for centre distance between the gears. It is has to be very exact for the cycloidal gears to mesh properly. but the involute gears allow certain degree of change in centre distance hence the involute gear tooth is used always.
What is interference in gears?
Interference in gears is mating of two non-conjugate or non-involute tooth profiles. Basically when the tip of pitch circle of pinion O1 tries to dig out (interfere with) the tooth of the gear wheel O2 .
IS 3665 1966 Dimensions for involute sided splines?
EXTERNAL INVOLUTE SPLINE MAJOR DIA : 140mm. MINOR DIA : 128mm. NO. OF TEETH : 22 SPLINE WIDTH : 8mm. IS : 3665
List any two practical application of an involute?
1. gear teeth profile2. scroll compressor
What are the characteristics of Gears?
they have teeth
What are three conditions that must be satisfied for gears to mesh properly?
For gears to mesh properly, they must have compatible pitch diameters, ensuring that their teeth align correctly during operation. The tooth profiles should also be designed to match, typically following standard involute shapes to maintain smooth engagement and disengagement. Additionally, the gears must be properly aligned and positioned to prevent excessive wear and ensure efficient power transfer.
Is it true gears are wheels with teeth?
Yes it is.
Are wheels with teeth that fit together?
Gears are wheels with teeth that fit together.
What is the difference between spur gears and other gears?
Spur gears are cut with straight teeth. They can only transmit rotation between parallel shafts, and are relatively economical. Bevel gears have teeth cut on an angle. They transmit rotation between non-parallel shafts. Helical gears have curved teeth. They are generally quieter than spur gears, but are generally more difficult to make and more expensive.
What are the different types of gear combinations used in mechanical systems?
There are three main types of gear combinations used in mechanical systems: spur gears, helical gears, and bevel gears. Spur gears have straight teeth and are used for simple applications. Helical gears have angled teeth for smoother operation and higher loads. Bevel gears have cone-shaped teeth and are used to change the direction of rotation.
