Hello all,
I have a Hurco KMB with a Freqrol drive for the spindle. I am trying to tap holes but can't get the RPM and feed to match with the tap. I am using: 1/4-20 tap with 300 RPM and a 15 IMP feed. The math I am using is 300*(1/20)=15. The floating tap holder will quickly pull out like the feed is too slow. Is this correct? If so my next guess is the Freqrol drive may be setup wrong. This is my first attempt at tapping with this machine.
Thanks