HEIDENHAIN TNC 426, TNC 430 123
5.5 Working with Cutting Data Tables
Creating a new cutting data table.
U Select the Programming and Editing mode of operation.
U To select the file manager, press the Taste PGM MGT key.
U Select the directory where the cutting data table is to be stored.
U Enter any file name with file name extension .CDT, and confirm with
ENT.
U On the right half of the screen, the TNC displays various table
formats (machine-dependent, see example in figure at right). These
tables differ from each other in the number of cutting speed/feed
rate combinations they allow. Use the arrow keys to move the
highlight onto the table format you wish to select and confirm with
ENT. The TNC generates a new, empty cutting data table.
Data required for the tool table
n Tool radius – under R (DR)
n Number of teeth (only with tools for milling) – under CUT
n Tool type – under TYPE
n The tool type influences the calculation of the feed rate:
Milling tool: F = S · f
Z
· z
All other tools: F = S · f
U
S: Spindle speed
f
Z
: Feed per tooth
f
U
: Feed per revolution
z: Number of teeth
n Tool cutting material – under TMAT
n Name of the cutting data table for which this tool will be used –
under CDT
n In the tool table, select the tool type, tool cutting material and the
name of the cutting data table via soft key (see “Tool table: Tool data
for automatic speed/feed rate calculations.,” page 103).
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