HUST CNC H6D-T - Page 52

HUST CNC H6D-T Manual
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Fig. 2-32 Work-Piece Symmetrical Diagram
* Machine Origin
There is a fixed point on the machine bed or bed rail. This point is used as a reference
point for determination of the work coordinate (or work origin) and calibration of the
tool length compensation. This reference point is called the machine origin.
For the H6D-T Series controller, the machine origin is the stop position of the tool when
the homing for each axis is complete. As Fig. 2-31 shows, the machine origin
corresponding to the coordinate used to indicate the work origin varies depending on the
position of the work origin. In general, the machine origin is determined based on the
position where the positioning measurement device and the touch plate of the limit
switch are installed on the machine. In this case, use the positioning measurement
function of the controller to obtain the relationship between this position and the
coordinate used for the work origin.
The homing action should be performed after powering on the machine. If the current
position is lost due to power failure, the homing action should be performed again.
Fig. 2-33 Lathe Origin Diagram
Z
X
Z
Machine Origin
Z HOME
W ork Origin
X HOME
+Z