IIRC some controls have a switch to do this. Also I think you can flip
the sign of one axis and get a mirror image but the sense of the cut
(climb/conventional) also flips so unless your machine is pretty tight
dimensions may also shift. I've always done this the hard way by going
back to the CAM. My brain is pretty well fried but I think a bit of
matrix algebra would do this for you.
Dave
On 9/11/20 6:43 AM, R C wrote:
Hello Andy,
That is interesting, I should learn more about these coordinate
systems. From a math/geometry perspective there nothing that could
keep you from
translating, rotating (and even more weird transformations) a
geometry into a custom one. However in an implementation, of course,
you'd have to have a spot somewhere between the definition of an
object (g code if you will) and where the machine/tool actually
moves. In some, not CC related, simulations, that's actually done/used.
there probably is a list of what these coordinatesystems actually do?
(Now I am wondering, if I make a part, is there a coordinate system,
that would turn out the mirror image that part?)
Ron
On 9/11/20 1:54 AM, andy pugh wrote:
On Fri, 11 Sep 2020 at 05:22, R C <cjv...@gmail.com> wrote:
It sounds like the coordinate systems in essence are the same, they
just have a different origin, for all the other parts, it's just the
same thing, just translated and/or rotated for another part?
Yes, and there is also only rotation about the axis supported.
(I did just find myself wondering if you could put a set of direction
cosines in UVW but then decided that there probably isn't much call
for that.)
http://linuxcnc.org/docs/2.8/html/gcode/coordinates.html
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