helical gears

Question 1

If T is the actual number of teeth on a helical gear and is the helix angle for the teeth, the formative number of teeth is written as

Answer 1

Tsec^3phi

Question 2

In helical gears, the distance between similar faces of adjacent teeth along a helix on the pitch cylinders normal to the teeth, is called

Answer 2

normal pitch

Question 3

In helical gears, the right hand helices on one gear will mesh ……. helices on the other gear.

Answer 3

left hand

Question 4

The helix angle for single helical gears ranges from

Answer 4

20° to 35°

Question 5

The helix angle for double helical gears may be made up to

Answer 5

45°