Re: NEW member Suitable conversions?

>
> From: "Matt Shaver" <mshaver@...>
>
> > From: D.F.S. <dfs@...>
> > How could the system intelligenty do a "Tool Change" without simply
> > making me do absolute positioning of the entire table based on presumed
> > tool location.

> Some controls (this includes the EMC) have "work coordinate systems" or
> "fixture offsets" that can be independently adjusted and called up as
> required in your program. The G-codes in the EMC are G54 (default), G55, G56,
> G57, G58, G59, G59.1, and G59.2 for a total of 8 plus the G53 coordinate
> system which is non-adjustable and refers to the machine's basic position. In
> other words, no problem for 8 tools or less.
>

Great, I can live with 8.

I doubt I'm need more, or be able to mount more anyway.


As a second question, how good is the accuracy of threading on
systems with encoders on the spindle or chuck?

Clearly it must work, but I still have doubts considering the
rotational speeds of the work, and the inertia of it, and the tools
themselves.

I'm talking single point on CNC lathes in particular.

Is it really possible with any accuracy, and can it be
done in multiple passes and pick up at the correct location?

Marc