I haven't got a spindle encoder mounted yet nor switched to step/dir for it. Just PWM to 0V..10V from cheap far east module. Only goes down to about 100 RPM. Looking forward to mounting encoder so I can try power tapping. This came with AlibreCAD 'Expert' subscription back in 2007. Looks like it's still available for download if one downloads a trial version of BobCAD. https://www.machinist-toolbox.com/ My plan at the software end was to eventually create something like this but written in Lazarus (Free Pascal) which means it would run on PCs with WIN or Linux and Macs (or even the Pi or Beagle with MachineKit). So far I've only written the hole boring utility for which I believe I used Jon's C code translated to Pascal. The only issue with this small app is that LinuxCNC chokes on the I/J G-Code with radius not equal error. Haven't had a chance to look into that yet. The R approach does work. Either can be selected from the Options menu.
John Dammeyer > -----Original Message----- > From: andy pugh [mailto:bodge...@gmail.com] > Sent: June-01-21 12:59 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Drilling feed rates. > > On Tue, 1 Jun 2021 at 06:48, John Dammeyer < <mailto:jo...@autoartisans.com> > jo...@autoartisans.com> wrote: > > > However most of the online calculators for drilling call the load per flute > > as cutting feed in inches per revolution and don't take into > account the number of teeth so their value is half the feed rate at about 10 > ipm. > > You can use feed-per-rev mode in LinuxCNC if you want. > > > > So where the Machinist-Toolbox software lets you specific the number of > > cutting edges (flutes) why don't the online ones do this? > > I used to use FSWizard online, and that took into account number of > flutes (The online version no longer works, though) > > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > � George Fitch, Atlanta Constitution Newspaper, 1912 > > > _______________________________________________ > Emc-users mailing list > <mailto:Emc-users@lists.sourceforge.net> Emc-users@lists.sourceforge.net > <https://lists.sourceforge.net/lists/listinfo/emc-users> > https://lists.sourceforge.net/lists/listinfo/emc-users
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