How to design gears with known center distance and proportion?
Finally determine the number of teeth and modulus (pressure angle standard value of 20 degrees), by appropriate modification, together with the known center distance. (strength check)
Number of teeth = modulus = diameter of pitch circle; selection of standard modulus and integral number of teeth (the standard minimum number of straight teeth is 17 teeth), together with the diameter of indexing circle (the value is as close as possible)
Given the center distance and the ratio, we can calculate the radius and diameter of the circle of the two gears (the sum of the radius of the radius of the circle is equal to the center distance)
