On 25 January 2018 at 02:06, Dave Cole <[email protected]> wrote:
> > The prox switches which do not have a plasic tip, but where the plastic > tip is within the sides of the metal sensor tube are considered shielded > prox switches. I use these on all my machines. (typically combined with index homing for the best possible repeatability). They have the advantage that they can be buried inside the machine out of harm's way. My target is normally a drilled hole in an non-bearing part of the slide. Sometimes filled with a plastic plug. I thought I had a better picture than this, but you can see the hole that the X-axis one lives in to the left of the ball-nut block in this picture: https://photos.app.goo.gl/zZSFMootmB2rN8GB2 And this picture shows the target hole on the actual lathe slide (for the Z axis) https://photos.app.goo.gl/Bbxfx8WoIZiIjc8l2 In the pic the plug is aluminium. That didn't work It is now Delrin. Its amazing that they can sell those for just over $2 bucks.. Crazy cheap! They partly save the money on the cables. I have had many cable failures and no sensor failures. I would suggest replacing the wires as close as possible to the sensors with something like: https://www.rapidonline.com/lappkabel-1027752-lflex-chain-808-cp-grey-drag-chain-cable-3-x-0-5mm-63-4350 Note that you are then spending much more on the wire than the sensor :-) (There are cheaper 3 x 0.5mm cables in the same section of that web site) -- 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, 1916 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
