Tool Compensation; Introduction; Tool Length Compensation - HEIDENHAIN TNC 640 User Manual

6
6.3

Tool compensation

Introduction

The control adjusts the tool path by the compensation value
for the tool length in the spindle axis. In the machining plane, it
compensates the tool radius.
If you are writing the part program directly on the control, the tool
radius compensation is effective only in the working plane.
The control accounts for the compensation value in up to six 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 (e.g. TOOL CALL 0).
Danger of collision!
The control uses the defined tool lengths for tool length
compensation. Incorrect tool lengths will result in an incorrect
tool length compensation. The control does not perform a length
compensation and a collision check for tools with a length of 0
and after TOOL CALL 0. Danger of collision during subsequent
tool positioning movements!
Always define the actual tool length of a tool (not just the
difference)
Use TOOL CALL 0 only to empty the spindle
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
L: Tool length L from TOOL DEF block or tool table
DL Oversize for length DL in the TOOL CALL block
:
TOOL CALL
DL Oversize for length DL in the tool table
:
TAB
266
NOTICE
+ DL
with
TOOL CALL TAB
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
Tools | Tool compensation