CNC milling machine
The design of the CNC machine specifies the definition of the respective coordinate system. Correspondingly,
the Z axis is specified as the working spindle (tool carrier) in CNC milling machines (see figure 23),
whereby the positive Z direction runs from the work part upwards to the tool.
The X axis and the Y axis are usually parallel to
the clamping plane of the work part.
When standing in front of the machine the positive
X direction runs to the right and the Y axis away
from the viewer.
The zero point of the coordinate system is recommended
to be placed on the outer edge of the
work part.