thread for ball recirculation

[hoytdefiant]

good morning to all, to perform a spherical thread on a ball recirculation bar, is there a system less laborious than the point to point? I explain better; I have to perform a threaded channel r7 step 45 with a tool r3, so I have to widen and follow a profile, as I increase in x. for the moment I am using the thread command but understand well that with all the increments I have to do, indicate initial point, final point and smaller diameter (three positions for each increment) becomes an infinite job. I attach image with indicated the built point model for programming.

thanks for the attention.