HEIDENHAIN TNC 320 User Manual page 187

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>0). If you
are programming the machining data with an allowance, enter the
oversize value in the TOOL CALL.
A negative delta value describes a tool undersize (DL, DR<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 clearing simulation.
Delta values from the TOOL CALL block do not
change the represented size of the
simulation. However, the programmed delta values
move the tool
Delta values from the TOOL CALL block influence the
position display depending on the optional machine
parameter progToolCallDL (no. 124501).
Entering tool data into the program
The machine tool builder determines the scope of
function of the TOOL DEF function. Refer to your
machine manual.
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
HEIDENHAIN | TNC 320 | Conversational Programming User's Manual | 9/2016
tool
by the defined value in the simulation.
during the
Tool data 5.2
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5