why is involute profile preferred to cyloidal

The cycloidal is a curve generated by a locus of any point on a circle which is rolling around another circle gears whose teeth profile is made of cycloidal curves is called cycloidal gears.Involute profile is preferred over cycloidal profile because 1.

The rack cutter is cheaper and the method of manufacture is simpler.The profile is easy to cut b.1) it is difficult to construct the cycloidal teeths.

In the involute system,the pressure angle is constant from commencement to end of engagement c.Lesser number of teeth can be possible for cycloidal gears which facilities large reduction ratios.

(r + r) tan φ.The produced curve is called hypocycloid if the second circle.• cycloid teeth does not undercut or interfere with its mating teeth.

The pressure angle is constant throughout the engagement of teeth.Manufacturing of accurate involute gear teeth is easy.

• manufacturing of accurate involute gear teeth is easy.The centre distance should remain the same.The running is less smooth.

It is difficult to manufacture due to requirement of hypocycloid and epicycloids.

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why is involute profile preferred to cyloidal
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