472 Programming: Special Functions
11.14 Working with cutting data tables
Creating a new cutting data table
Select the Programming and Editing mode of operation
Select the file manager: Press the PGM MGT key
Select the directory where the cutting data table is to be stored
Enter any file name with the file name extension .CDT, and confirm
with ENT
On the right half of the screen, the TNC opens a standard cutting
data table or displays various table formats (machine-dependent).
These tables differ from each other in the number of cutting
speed/feed rate combinations they allow. In this case 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
Tool radius—column R (DR)
Number of teeth (only with tools for milling)—column CUT
Tool type—column TYPE
The tool type influences the calculation of the feed rate:
Milling tools: 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
Tool cutting material—column TMAT
Name of the cutting data table for which this tool will be used—
column CDT
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 calculation", page 188).
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