Re: [CAD_CAM_EDM_DRO] Linux EMC questions

Malcolm Kynoch wrote:

>Hi,
>
>I'm thinking about building or motorizing a cnc mill to aid me in my
>other projects. EMC seems to be a good solution, I'm planning on 4
>axis control is EMC capable of this
>
>

Absolutely, yes. It is very configurable for different combinations of
axes.
If you intend full, 4-axis simultaneous motion, however, it takes some
thinking
to figure out what to do with feedrates. This has been an ongoing
discussion
as to how you get any CNC program to properly calculate the velocity the
axes
need to move at to produce the commanded feed velocity at the cutting edge.
If you have a 4th rotary axis, then the radius the tool is from the
center of that
rotation comes into play, but the RS-274 (G-code) doesn't specify that
distance!

Jon