On Sat, 23 Feb 2008, Brian Pitt wrote: > On Friday 22 February 2008 02:22, Ian W. Wright wrote: >> For proper restoration work, it is essential that any new >> screws match the originals as closely as possible and so I'm looking for >> a way to do this using EMC2 and my little milling machine, with a lathe >> bed attachment. > > you could thread mill them > put the rotary table horizontal and center the screw blank then give a G1 > Z...A... command > with a 60deg slitting saw to cut the whole thing in one pass ,you can get > the saws here > http://www.martindaleco.com/HTML/MetalWorkingMicaSaws/MicaUndercutting_HSSandTC.htm > or get some reground if you have 55deg threads > > the same kind of setup would work with the stepper driven lathe head and > a small motorized saw arbor on the cross slide > > Brian
or you could just bite the bullet and put an encoder on the spindle. if it's low resolution (~100 lines/rev) and you have three extra inputs on the parport, then you can read it in software with the 'encoder' component. no extra hardware needed, and you can use the lathe as it was meant to be used. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
