On 06/12/2013 06:48 PM, andy pugh wrote: ... snip > One claims to have electronic half-nut control. Whatever that does. I > can't see any way for them to know where you have wound the carriage > back to, so I do think a threading indicator is still needed.
One is supposed to engage the half-nut when the indicator reaches an appropriate location. I suspect the ELSs have an index sensor so they know when to start the thread, just like LinuxCNC. > > The second one appears to give very much the same style of working as > my LinuxCNC setup. But probably at rather more cost, and rather less > extra capability. I use LinuxCNC on my manual bridgeport as a DRO and Spindle controller. http://www.wallacecompany.com/machine_shop/EMC2/dro_vfd/ This was quite a while ago, now that I am getting better at Glade I'll need to redo this app. The Bridgeport had an Accurite display, but I sold it for what it would have cost to buy a PC for the LinuxCNC DRO. If you don't hack into the lathe proper, I'll 'allow' you to belt up the lead screw, install scales on the axes, hook up a VFD and tie it together with LinuxCNC. :) -- Kirk http://www.wallacecompany.com/machine_shop/index.html ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
