Mechanical Engineering - Machine Design - Discussion

Discussion Forum : Machine Design - Section 6 (Q.No. 11)
11.
If the centre distance of the mating gears having involute teeth is increased, then the pressure angle
increases
decreases
remains unchanged
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
12 comments Page 2 of 2.

Ganeshr said:   5 years ago
Increases because the radius of the pitch circle increases as centre distance increases.

Cos (Pressure angle) = base circle radius/pitch circle radius.

Hence pressure Angle increases.

Chirag darji said:   4 years ago
Central distance invesely proportion to cos θ and cos the decreasing function so that.

Central distance in the gear having involute teeth is directly proportional to pressure angle.
(2)


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