On 18 May 2010 11:00, Mark Wendt <[email protected]> wrote: > It's a two axis machine, X and Z axes. Fairly simple operation. The > machine will be cutting tapered bamboo strips, ranging in length from > about 32" to 54", in one pass, using two saws set in a "V" on the Z axis > with the "point" of the "V" towards the bottom..
Just to clarify, the included angle of the "V" is fixed at 60 degrees with the peripheries intersecting but staggered, and your taper is controlled by whether you cut full-depth or less? > G17 - Plane select - since this is a two axis machine, and uses the X > and Z axes, should I include this code, and i do include it, would it be > G18 - the XZ plane? I think so. It probably doesn't matter. This code selects the plane that curves (G2, G3) are in, and the retract direction for canned cycles (like drilling and boring). I guess you might be wanting to curve between the interpolation points, but doing it with G2 and G3 sounds painful. As you are making actual, physical, splines then using the new NURBS capability seems philosophically and mechanically right. http://wiki.linuxcnc.org/emcinfo.pl?NURBS However, I have never managed to download the docs in a usable form so don't know how to use it, or what it does. > G54 - this one I'm not sure about why it would be included. When you > home the machine, you're on the machine coords X0 Y0, right? Generally not. You always work in one of the "work" coordinate systems, G54-G59. G54 is the default. http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?CoordinateSystems explains it better than I can. > G90 - Distance mode - Absolute distance - this one, though seemingly > straight forward gives me questions on some of the other codes G90 means that G1 X10 moves you to a point where X in the current reference frame is 10. If you have G90 then a second G1 X10 will do nothing. In incremental mode (G91) if you are at X=10 and do G1 X10 you will move to X=20. do it again and you move to X=30...... -- atp ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
