HEIDENHAIN TNC 620 (73498x-02) - Manual (Page 175)

Tool compensation 5.3
5
TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 5/2013
175
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 the compensation value in up to five axes
including the rotary axes.
Tool length compensation
Length compensation becomes effective automatically as soon as
a tool is called. To cancel length compensation, call a tool with the
length L=0.
Danger of collision!
If you cancel a positive length compensation with
TOOL CALL 0 the distance between tool and
workpiece will be reduced.
After
TOOL CALL 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
TOOL CALL block and the tool table into account:
Compensation value =
L + DL
TOOL CALL
+
DL
TAB
with
L: Tool length L from the TOOL DEF block or tool table
DL
TOOL CALL
: Oversize for length
DL in the TOOL CALL 0 block
DL
TAB
: Oversize for length
DL in the tool table