Re: [CAD_CAM_EDM_DRO] EMC and no response from M3

Raymond Heckert wrote:

> That should be relatively straight-foreward, shouldn't it? I mean, 2*pi*R
> times RPM should give inches per minute, and the lathe should always "know"
> where the tool-tip (R) is, so just a matter of inverse-linear equation.
> Rpm = x/R, where x is the factor that takes into account your desired sfpm
> and 2*pi. Or did I get coolant splashed all over me (or am I all wet)?

Well, of course, the calculation is simple, but it is the details that make it
complicated. When you switch in and out of constant surface speed
mode, the control has to make relatively smooth transitions, and do
reasonable things when the cutter lifts off the part to go back to the beginning
of the cut for another pass.

Jon