HEIDENHAIN ND 930 - Manual (Page 5)

Fundamentals
5
Z
Z
O
X
+Z
+X
+Z
O
Cross slide, saddle and top slide
On conventional lathes, the tool is mounted on a slide that moves in the
direction of the X axis (the cross slide) and in the direction of the Z axis
(the saddle).
Most lathes have a top slide above the saddle. The top slide moves in Z
axis direction and is designated Zo.