gearcutter
Industrial
Would anyone be willing to let me know if below is correct/incorrect? It's based on my understanding of the subject.
Operating P.C.D.s can only be used to calculate center distance for spurs and helicals if the amount of correction given to one member is equally inverse to the amount given to the other, eg. +0.50 and -0.50. If the corrections are not equally inverse to each other then centers can only be calculated from tooth thicknesses based on the difference between the "no longer equal" operating pressure angles.
Operating P.C.D.s can only be used to calculate center distance for spurs and helicals if the amount of correction given to one member is equally inverse to the amount given to the other, eg. +0.50 and -0.50. If the corrections are not equally inverse to each other then centers can only be calculated from tooth thicknesses based on the difference between the "no longer equal" operating pressure angles.