I use a dowel to touch off to the face of my spindle using the same method as Andy, move the tool closer than the diameter of the dowel then put the dowel between and jog out using 0.001" increments. And like Andy when the dowel falls through I touch off the tool not the material. For X I use the dowel to get close then do a test cut and measure then put that into the touch off entry. Once my turret is set up I chuck the material up and using my facing/turning tool I touch off to the material using the dowel method and the convenient touch off to material button that I added to my pyvcp panel.
http://gnipsel.com/linuxcnc/g-code/gen05.html I also have some pyvcp buttons for touch off so I don't accidentally touch off to the wrong thing and screw up my offsets. http://gnipsel.com/shop/hardinge/hardinge.xhtml JT On 6/4/2014 2:17 AM, Marius Liebenberg wrote: > Hi all > I am fairly new to using a cnc lathe and I need some guidance with touch > off procedures. I am busy with a turret changer but for now I only have > a QC tool post with a limited number of holders so I have to re-tool in > the middle of a job. > I have homing switches on both axis. > > 1: With no touch probe how do I do a job that requires a tool change > that does not have fixed holders while the stock is in the chuck. > 2: How do I get the tool set to the Z zero line accurately? > > How do the regular users do this please? All help is greatly appreciated :) > > ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
