Tool Compensation - HEIDENHAIN iTNC 530 User Manual

5.3 Tool Compensation

Introduction
The TNC adjusts the spindle path in the spindle axis by the
compensation value for the tool length. In the working plane, it
compensates the tool radius.
If you are writing the part program directly on the TNC, the tool radius
compensation is effective only in the working plane. The TNC
accounts for up to five axes including the rotary axes.
Tool length compensation
Length compensation becomes effective automatically as soon as a
tool is called and the spindle axis moves. To cancel length
compensation, call a tool with the length L=0.
Danger of collision!
If you cancel a positive length compensation with T 0 the
distance between tool and workpiece will be reduced.
After T the path of the tool in the spindle axis, as entered
in the part program, is adjusted by the difference between
the length of the previous tool and that of the new one.
For tool length compensation, the control takes the delta values from
both the T block and the tool table into account:
Compensation value = L + DL
L: is the tool length L from the G99 block or tool table
DL is the oversize for length DL in the T 0 block (not
TOOL CALL
taken into account by the position display).
DL is the oversize for length DL in the tool table.
TAB
HEIDENHAIN iTNC 530
+ DL where
TOOL CALL TAB
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