HUST CNC H6D-T Manual
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* Coordinate Axis
The H6D-T Series uses the well-known 2-D Cartesian coordinate system. The two axes
used in the lathe series are defined as X-axis and Z-axis. The Z-axis is the centerline of
the lathe spindle. The intersection of the two axes is the zero point, i.e. X=0 and Z=0.
Fig. 2-28 shows the relationship among each axis, tool motions, and rotation direction
of a work-piece. This manual uses the rear tool post as an example.
Fig. 2-28
When the spindle is rotating, your thumb points to the positive direction of the Z-axis
and four fingers point to the direction of normal rotation.
* Coordinate Positioning Control
The coordinate of the H6D-T Series is either absolute or incremental, depending on the
command code of the coordinate axis, i.e.:
X, Z: Absolute coordinate commands.
U, W: Incremental (or decremental) coordinate commands.
Please note the diameter is generally used to represent the X-axis coordinate for a lathe,
regardless of incremental or absolute coordinates.
Absolute Coordinate Commands
Tool-positioning coordinates are acquired with reference to the origin (work origin or
program origin) of the work coordinate system. Coordinates are either positive (+) or
negative (-), depending on its position relative to the origin.
G03
G02
G02
G03
+Z
+X Top (rear) holder
+Z
+X Bottom (front) holder
+Z
M03
CW
M04
CCW
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