Hey group, I have a question for the
masses.
Whenever I machine a slot,
the sides tend to be on size, but the length is short. So I have
routinely slowed down the cutter feed rate at the end of the slot to
compensate for the short programmed path, as compare to the
feature.
ie) Mill a 1/2 slot, full
end radii, with a 3/8 end mill, the programmed path end radius is only .0625
when programming to tool center. I never really had a formula for the
amount to reduce the feed rate, but have seen it now explained as the cutter
path rad. divided by the feature radius, times the feedrate.
ie) .0625/.25=.25 factor.
.25 x 20 ipm=5ipm for end radius, then back up to 20ipm
for the straight away, just like nascar.
OK, fine, this seems logical enough for a
formula, tho if anyone else has a better one, I would love to hear
it.
NOW THE QUESTION....
Is there a way to make
smartcam do this calculation for me whenever the factor value is .... say,
under .50?
This would eliminate all the feed rate changes
and returns in the shape file, making it just simply the geometry to
program.
If not a template section, what about a macro
to adjust feed rate down a percentage, then return it, from picking only a
single element?
This isn't the most pressing
issue, just trying to further my limited intelect (sp) dang, as if I have
much.
Thanks group
Jon Baker
CUT-CALC.XLS