HEIDENHAIN TNC 128 (77184x-02) - Manual (Page 149)

Tool data 5.2
5
TNC 128 | User's Manual HEIDENHAIN Conversational Programming | 5/2014
149
Delta values for lengths and radii
Delta values are offsets in the length and radius of a tool.
A positive delta value describes a tool oversize ( DL, DR, DR2>0). If
you are programming the machining data with an allowance, enter
the oversize value in the
TOOL CALL block of the part program.
A negative delta value describes a tool undersize (
DL, DR, DR2<0).
An undersize is entered in the tool table for wear.
Delta values are usually entered as numerical values. In a
TOOL
CALL block, you can also assign the values to Q parameters.
Input range: You can enter a delta value with up to ± 99.999 mm.
Delta values from the tool table influence the
graphical representation of the
tool .
Delta values from the
TOOL CALL block do not
change the represented size of the tool during the
simulation. However, the programmed delta values
move the
tool by the defined value in the simulation.
Entering tool data into the program
The number, length and radius of a specific tool is defined in the
TOOL DEF block of the part program.
Select the tool definition: Press the
TOOL DEF key
Tool number: Each tool is uniquely identified by its
tool number
Tool length: Compensation value for the tool
length
Tool radius: Compensation value for the tool
radius
In the programming dialog, you can transfer the value
for tool length and tool radius directly into the input
line by pressing the desired axis soft key.
Example
4 TOOL DEF 5 L+10 R+5