Setting a tool on a lathe is generally more complicated than with a mill where the Z dimension is the only offset. Doing it with a touch off probe on a lathe is a big deal. Usually a probe is setup and the tool is touched off the probe in the Z and X axes. But usually the probe must be retracted or removed during cutting. The last one I did like that had a renishaw probe on drop down arm that was used to set the tools. It worked well once it was setup but it was quite complicated. Any significant changes in the tooling and the tool probing program had to be altered so the new tools could be touched off the probe.
Dave On 3/18/2012 8:51 PM, Steve Blackmore wrote: > On Sun, 18 Mar 2012 20:53:53 -0400, you wrote: > > >> I am not aware to a method that doesn't at some point make use of the G38.2 >> function, which means there MUST be a probe of the tool. In my case, doing >> pcb work using eagle& pcb2gcode, I wrote some routines that assume the >> probing pin is connected to the pcb itself. In my case, the use of the >> routines requires that calls to the probe function be manually edited into >> the pcb-gcode output to command a move to a location that clears the work >> space for the tool change, and after each tool change call the subroutine >> to establish the offset. >> > Here we go again :) There should be NO reason to have to have some sort > of probe function, with it's additional hardware and code to touch off a > tool. > > You should be able to move the tool manually during a tool change > operation and zero it. Every CNC controller I've ever seen has that > facility, except LinucCNC. > > Feed hold and jog is another. > > I've discussed this with more than a dozen CNC companies who I have > dealings with regularly and not one would entertain any controller that > could not jog during a feed hold or tool change. > > Steve Blackmore > -- > > ------------------------------------------------------------------------------ > This SF email is sponsosred by: > Try Windows Azure free for 90 days Click Here > http://p.sf.net/sfu/sfd2d-msazure > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
