HEIDENHAIN TNC 620 User Manual page 205

Programming aids | Cutting data calculator
Workpiece material WMAT
Define the workpiece materials in the WMAT.tab table. You must
save this table in the directory TNC:\table.
This table contains the WMAT column for material and a MAT_CLASS
column where you can categorize the materials by material classes
with the same cutting conditions, e.g. according to DIN EN 10027-2.
Enter the workpiece material as follows in the cutting data
calculator:
Select the cutting data calculator
Select Activate cutting data from table in the pop-up window
Select WMAT from the selection menu
Cutting material TMAT
Cutting materials are defined in the TMAT.tab table. You must save
this table in the directory TNC:\table.
You assign the cutting material in the TMAT column of the tool table.
You can create columns with other names, such as ALIAS1 and
ALIAS2 in order to enter alternative names for the same cutting
material.
Cutting data table
Define the combinations of workpiece material and cutting
material with the corresponding cutting data in a table with the
file extension .CUT. You must save this table in the directory TNC:
\system\Cutting-Data.
You assign the appropriate cutting data table in the CUTDATA
column of the tool table.
Using the simplified cutting data table, you can determine
speeds and feed rates using cutting data that are
independent of the tool radius, e.g. VC and FZ.
If you require specific cutting data depending on the tool
radius for your calculations, use the diameter-dependent
cutting data table.
Further information: "Diameter-dependent cutting data
table ", Page 206
The cutting data table contains the following columns:
MAT_CLASS: Material class
MODE: Machining mode, such as finishing
TMAT: Cutting material
VC: Cutting speed
FTYPE: Type of feed rate FZ or FU
F: Feed rate
HEIDENHAIN | TNC 620 | Klartext Programming User's Manual | 01/2022
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