Re: High Speed Machining Look ahead EMC

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Bob Simon <bsimon@q...> wrote:

> >
> >VectorCam has some high speed machining tools that might be
> >interesting to test. We have a special post processor that will

add

> >feedrate reduction and acceleration delays around corners based on
> >angle of change. The reduction and delay is based on a user
> >controlled distance. Would you be interested in running some tests
> >to see if this kind of control could improve the cornering on your
> >machine?
>
> Hi Fred,
>
> Does your special post processor filter g-code files, or does it

only work

> with Vector Cam's intermediate program file format? If it filters g-

codes,

> I would be willing to test it on my retrofitted Cincinnati

machining

> center. I do 3D mold contouring with feed rates near 150 ipm.

Hi Bob, It's not a filter, but if you send me a G-code file, I can
back plot and then regenerate the toolpaths with the Feeds
recalculated based on distance parameters. This may be probleematic
with arcs, so if your program contains Z-level kinds of roughing that
utilizes arcs, it may be best to just work on a finishing pass. The
problem being that the G-code usually only has 4 place decimals and
this can cause small gaps in the backplot-regen process. If you are
using the EMC 6-place decimal for arcs, it might be ok.

e-mail me a file and I'll try it out. Include some parameters you
would like to try and I will provide several iterations with
different settings.

imserv @ imsrv.com

Best Regards,

Fred Smith - IMService