Programming instructions

5-38
Tool Corrections NC Programming 17VRS
DOK-MTC200-NC**PRO*V17-ANW1-EN-P
5.6 Tool Length Compensation
When movements are being performed in the direction of the tool axis
and tool length compensation inactive is set, all position data relates to
the position of the nose of the spindle.
Programmed
Z-value
Z+
Fig. 5-31: Tool length compensation inactive
When there is motion in the direction of the tool axis and tool length com-
pensation active is also present, the actual tool lengths entered in the
magazine list are automatically used for calculations by the controller, so
that all position data now applies to the position of the tool tip.
In order to establish or remove tool length compensation, it is necessary
to perform a programmed move in the direction of the tool axis such that
the spindle nose stops on the programmed position when the end point is
approached.
The direction of the tool axis is assumed to be the direction of the main
axis which is perpendicular to the process (machining) plane. The position
of the tool axis must be changed if the process plane is changed (G17,
G18, G19).
The tool length compensation (G47) must be canceled and activation of
tool length compensation (G48) must be programmed in the tool change
program.
Z+
Programmed
Z-value
Tool Length
Fig. 5-32: Tool length compensation active