Hi Andy >Not wanting to confuse the situation, but I think that this might need to be set by a parameter in the tool table. It is not >inconceivable that a given lathe might have both front and back tool posts, like this arrangement here:
Yes, I didn't explain myself very well. There are of course 2 separate issues, the plot displayed when using a slant bed lathe and using a rear tool post with arcs reversed etc. The rear tool post on a front tool post lathe may well require big offsets from tool 1 and negative signed arcs say. At present I am just concentrating upon trying to get a display which matches what I see with a slant bed. > Have you tried GEOMETRY=-XZ in the INI file? I think I tried this previously, just done it again and it is only partially successful. Whilst the part profile is now above the Z centre line, with home position above and to the right, mimicking the view with the tool is approaching from above on a slant bed lathe, the dimension bars and the X0 Z0 intersection marker are displayed above the home position, in a mirror to the part profile. I deleted the emc.var file before start-up, loaded a file that just contained M2, homed to homing switches then 'touched off' to an approximate X0 Z0 in G54 prior to loading a file with some code, but despite the fact that the tool moves and cuts the profile as it should and returns on G28 to 'home', the rest of the display remains in a mirrored position relative to 'home' which matches a conventional front tool post lathe. Will have to look through the source code again and see what GEOMETRY= changes and go from there. I may just have to stick with the conventional view and transpose it in my head. I long since stopped thinking about CW and CCW arcs where lathes are concerned and just view them as convex or concave, which assists greatly in programming the correct G code irrespective of the view you are presented with. regards ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
