My encoder is attached to the spindle on my BP and there is lots of play on the drive spline and the motor is original. I rigid tap all the time and you can hear the clunk when it reverses. So long as your encoder is connected directly to the spindle the rest can be a bit sloppy.
JT On 10/1/2013 4:29 AM, Sven Wesley wrote: > 2013/10/1 andy pugh <[email protected]> > >> On 1 October 2013 07:59, Sven Wesley <[email protected]> wrote: >> >>> Ah, but of course! >>> This is a machine with a gearbox, switching gear at 580 RPM, I think I >> need >>> to get rid of the motor and make a direct drive to be able to do what I >>> want to do (tapping). >> Well, the fact that the cooling fan is on a separate motor does mean >> that the end of the main motor shaft is probably clear, and an encoder >> could be fitted. >> >> However, if there is a gearbox then it probably makes sense to use one >> of the gearbox gears and a tooth sensor. >> >> This is how Jon did it: >> http://www.pico-systems.com/bridge_spindle.html >> >> And this is how I did it: >> >> http://www.cnczone.com/forums/vertical_mill_lathe_project_log/109301-harrison_universal_miller_conversion-2.html#post1212335 >> >> > Thanks Andy. I think there's too much play for rigid tapping with the > gearbox, or do you rigid tap with your Harrison? > There is a Maho retrofit with a controlled gearbox, that is one option. The > other option is to get another spindle with belt drive or another motor get > rid of the gearbox. > http://www.youtube.com/watch?v=E0rVbVixMw8 > > /S > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60134791&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60134791&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
