Even the k&t with a discrete component 60's control had smaller numbers towards the spindle...
On Mon, Feb 5, 2024, 1:36 PM <marcus.bow...@visible.eclipse.co.uk> wrote: > > John, > > Leaving aside right or left hand rules etc, leaning your head towards > your left shoulder shows that the relationship between the spindle and > the carriage is the same as on a vertical mill. > To bring the spindle closer to the carriage is a move in the -Z > direction. > If the argument is about the tool position, with the work in the chuck, > tilt your head to the right and you now have the tool on the right and > the work on the left, like a mill with the tool above (on the right) and > work in the chuck below (on the left0. Now the movement of the tool > towards the work is still -Z. > > Marcus > > > On 2024-02-05 18:01, John Dammeyer wrote: > > There's been an interesting discussion on the Unimat users list about > > axis direction. As usual someone can always find something on the web > > that supports their opinion. > > For example this one: > > https://digit-chain.com/names-of-axes-in-cnc-machine/ > > > > However I disagree that movement towards the rotating axis, be it the > > chuck on a lathe or the spinning cutter in a mill spindle, is a Z+ > > direction. Doesn't even seem intuitive to me either. > > > > Now it's true that you can set the Z=0.00 position anywhere in the > > G54... spaces depending on what you touch off on. And then a movement > > toward the spindle could be positive. But in an G53 machine > > coordinate space isn't a Z- direction towards the spinning tool or > > part? > > > > That's the way I have my LCNC system and MACH system set up. Even my > > ELS is negative towards the lathe chuck. > > > > John > > > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
