Re: [CAD_CAM_EDM_DRO] Re: Question about angular and linear feedrates

hi Alan

I see what your saying , but I'm thinking that having the baseline at
zero would give the raw max axis rate to start with then any non-zero value
in the radius parm would be used as a correction factor to scale the rate
down from the raw value to make up for the larger circumfrence at the
point of cut ,sorta like using constant surface feet on the lathe

Brian

On Monday 05 August 2002 16:18, you wrote:
> Hi Brian,
>
> Yes, I can understand that! I'm thinking if the cut radius on the
> rotary table is other then about 1" dia, THEN I must adjust my
> called-out feedrate.
>
> Or for those writing controllers, considering the addition of a radius
> parm? Maybe use of the alternate radius form of G02/G03 would be useful
> here? Maybe THAT's why they did it?
>
> I'm comfortable knowing that I'll get about the same feedrate on my
> hardware at 1" dia; and other then that, I'll adjust the feedrate as
> required (this assumes that the 'A' axis (on my hardware/software) is
> the fastest moving... I.E., needs the most steps to complete it's move.
> Otherwise, the 'A' axis feedrate will be SLOWER then the other axis.
>
> This may or may not "industry standard". But it gives me a starting
> point.
>
> Alan KM6VV