On Thu, 8 Dec 2022 at 20:36, John Dammeyer <jo...@autoartisans.com> wrote:
The X axis is interesting in how it's set up. The switches appear to be in > series with the NO switch on the X all the way out point and the NC switch > at the X all the way in point. The rod moves and opens the circuit at > either end. Very clever. > That setup is quite clever, and seems to be predicated on being able to adjust the stops. It is, however, not very well protected and not very aesthetic. For protection from swarf I have taken to embedding my sensors in the machine. Here is the limit switch for the X axis of my lathe: https://photos.app.goo.gl/heHHn4rEm42nge259 For the purpose of the photo the ball nut carrier linking screw has been removed and the carriage has been pushed forwards. The targets are two shallow holes machined into the underside of the cross-slide. This is the Z-axis target, another shallow hole, in this case plugged with delrin to stop it filling with chips. https://photos.app.goo.gl/CcjZELb8uRwehPX36 (I know it looks like aluminium in the photo, because at that point it was, but aluminium didn't work, as despite being non-inductive, it is conductive enough to couple into the machine frame) -- 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
