Question - What Are Bevel Gears And What Are Its Types?
Answer -
Bevel gears are the type of gears in which the two shafts happen to intersect. The gear faces which are tooth bearing are conical in shape. They are generally mounted on shafts which are 90 degrees apart but they can be made to work at other angles as well.
The bevel gears are classified into the following types on the basis of pitch surfaces and shaft angles:
- Mitre Gears: These types of gears are similar to each other ie. they have the same pitch angles and contain the same number of teeth. The shaft axes intersect at 90 degrees angle.
- Angular bevel gears: When two bevel gears connect at any angle apart from 90 degrees.
- Crown bevel gears: When the two shaft axes intersect at an angle greater than 90 and one of the bevel gears have a pitch angle of 90 degrees they are known as crown bevel gears.
- Internal bevel gears: In these type of gears the teeth on the gears is cut on the inside area of the pitch cone.