HEIDENHAIN TNC 122 User Manual - Manual (Page 3)

The TNC Guideline
From the workpiece drawing to
program-controlled machining
Step Task TNC mode Starting
of operation on page
Preparation
1 Select tools —— ——
2 Set workpiece datum
for coordinate system
—— ——
3 Determine spindle speeds
and feed rates
—— ——
4 Switch on TNC and machine —— 15
5 Cross over reference marks 15
6 Clamp workpiece —— ——
7 Set datum/
set position displays
21
Entering and testing part programs
8 Enter part program or
download over external
data interface
from 31
9 Test run: Run program block
by block without tool
51
10 If necessary:
Optimize the part program
from 31
Machining the workpiece
12 Insert tool and
run part program
51