Thanks John, There will be lots of 'first test runs'. <GRIN>
At the moment I'm still running the AC Servo with PWM mostly because I've been trying to learn a bit more about HAL PID programming. The pulleys from motor to spindle are V Belt and not quite the same size so once I switch over to step/dir I'm pretty sure I'm still going to have to use PID with the encoder for closed loop control. But the up side is I have the 60 tooth disk and slotted sensors working with the MESA 7i92H. At the moment it's all a mass of wires. Just wondering if some taps are better than others. I do have a floating collet based tap holder although I think I read somewhere they don't work as well for closed loop power tapping because they can't apply downward pressure as well as a fixed tap holder. John > From: John Figie [mailto:[email protected]] > > Maybe drill your hole oversize for the first test run so it doesn't have to > cut much. > > John Figie > > > On Wed, Jul 7, 2021 at 5:09 PM John Dammeyer <[email protected]> wrote: > > > As I get closer to being able to try power tapping I'm wondering if this > > sort of tap is suitable? > > https://www.amazon.ca/gp/product/B00F8T55GC/ref=ox_sc_act_title_3 > > > > Or is it garbage that will break in aluminium castings or mild steel on > > the first try? > > > > I'm at the point with encoder feedback that the spindle is at the desired > > speed and with > > setp spindle-near-speed.difference 0.1 > > > > and some PID tuning it's up to speed pretty quickly and seems reasonably > > stable. > > > > Running a simple dry run tapping test it appears to behave. I'm tempted > > to try it in a piece of soft wood. > > > > g20 g64 g90 > > (Speed and feedrate ) > > s100 m3 > > F5 > > (Tapping) > > G0 X1 Y1 z1 > > G0 Z0.1 > > G33.1 Z-0.5 K0.05 > > G0 Z1 > > G0 X1.25 Y1.25 > > M5 > > M2 > > % > > > > > > "ELS! Nothing else works as well for your Lathe" > > Automation Artisans Inc. > > www dot autoartisans dot com > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
