Helix angle – The helix angle is the angle between the axis (bore) of a helical gear and an (imaginary) line tangent to the tooth. The helix angle will be between 0 ° and 90 °.

How do you find the angle of a helix?

The formula Helix angle = Atan (Lead of Screw/Circumference of Screw) or α= atan(L/C) is used to calculate the Helix Angle, which is represented by α symbol.

What is the effect of helix angle?

The helix angle is considered to be an effective parameter to increase the contact ratio of a helical gear. Thus, it is possible to increase the helical gear load carrying capacity, including the tooth bending stress and tooth contact stress.