HEIDENHAIN iTNC 530 HSCI - Calculation of Cutting Data; Cutting Data Table; Material Tables

1602 HEIDENHAIN Technical Manual iTNC 530 HSCI
Cutting data table The cutting data for specific tools are available from the tool manufacturer.
Cutting data tables have the file name extension .CDT.
Each line in the cutting data table contains the data for a specific combination
of workpiece and tool material. For milling cutters you can enter up to four
cutting speeds with the corresponding feed rates per teeth. In the tables of
the manufacturers these data are specified for different infeeds and for climb
and up-cut milling. For drills you enter a cutting speed with the corresponding
feed rate per revolution.
A standard cutting data table is saved in the root directory of the iTNC (TNC:\).
You can add as many cutting data tables as desired.
If you change the standard cutting data table, you must copy the changed table
to another path. Otherwise your changes will be overwritten with
HEIDENHAIN standard data during the next software update:
 In the system file TNC.SYS, use the code word PCDT = to enter the path in
which your cutting data tables are saved.
Material tables The workpiece materials used are defined in the table WMAT.TAB, the tool
materials in the table TMAT.TAB.
Standard tables are in the root directory of the TNC (TNC:\).
You can arbitrarily expand and change all tables.
If you change the tables, you must copy them to another path. Otherwise your
changes will be overwritten with HEIDENHAIN standard data during the next
software update:
 In the system file TNC.SYS, use the code words TMAT = and WMAT = to enter
the path and file names of your tables.
In the material data tables:
 In the Name column, enter a brief name for the material (e.g. HSS).
 Enter additional information on the material in DOC column.
Calculation of
cutting data
 Define the workpiece material in the NC program with the WMAT soft key.
The TOOL CALL block provides soft keys for automatic acceptance of various
speeds (S1 to S4) and for the selection of the feed rate (F1 to F4).
If you enter the spindle speed manually, this value is taken into account in the
calculation of the feed rate. You cannot, however, enter F for calculation of S.
If you enter the feed rate manually, the entered value applies until you program
another feed rate. With the F AUTO soft key you can again activate the feed
rate from the TOOL CALL block.