The pitch of gear wheel teeth when measured around the pitch circle.
AddendaTips of the teeth of a wheel beyond the pitch circle.
The flank of each wheel is struck with a tracing point, thus attached to the pitch circle of the other wheel.
We may also say that the pitch circle is the edge of the pitch surface.
By the diameter of a wheel is meant the diameter of its pitch circle.
And to pencil in the teeth these circles must be fully drawn, as in Figure 234, in which P P is the pitch circle.
The amount of error thus induced diminishes as the diameter of the pitch circle of the cutter is increased.
The arc pitch multiplied by the number of teeth in the wheel gives the circumference of the pitch circle.
The depth below pitch line or the length of flank is, therefore, the distance between the pitch circle and the base circle.
When two gears of equal size mesh together, the pitch line, or the pitch circle, as it isp.