Re: axis naming conventions

All:

At 08:32 AM 11/22/00 -0800, you wrote:

>Ballendo, Terry,
>
>No, your both right. :)
>
>This may just be a point of view problem (pun intended). I think
>Ballendo is talking about CNC machines, while Terry is talking about 3D
>CAD systems. Let's keep in mind that many CAD systems are used by people
>who have never even seen a mill.

At least on a milling machine I don't think they are in disagrement.
Facing a milling machine (as an operator would) +X is to the right,
+Y is back away from the operator, and +Z is up. Remember these are
all tool moves, not table moves. The 0,0,0 orgin is at the lower left
bottom of the part. For a CAD system view of X/Y this would be the
lower left corner of the screen. For a right handed orthogonal coord.
system, +Z must be up, outward from the screen. This +Z matches the
mill +Z tool motion as being up.

Hugh Currin
Klamath Falls, OR