Re: High Speed Machining Look ahead EMC

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Leslie M. Watts"
<leswatts@a...> wrote:

> The typical cutting speed I use of 120 ipm with max 600 ipm rapids
> (ballscrew critical speed limited) qualifies for high speed

machining

...............

> It could be argued that cutting smoothness is a cam program issue
> rather than a machine controller one. But given that many cam

programs

> that we can afford generate fairly crude machine code it would be

nice

> to have some options in EMC.
>
> Some external control via the .ini file of interpolation control
> points and basis functions would be nice. In other words have the
> option of controlling the smoothness parameters- and perhaps not

smooth

> certain hard corners beyond a certain trajectory change angle. It

would

> be nice.

Les, Hope you are feeling better after surgery.

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?

Best Regards, Fred Smith- IMService

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