HEIDENHAIN TNC 122 User Manual - Manual (Page 37)

5 Programming
TNC 122 37
Y
X
1 2
3 4
60 30
20
50
0
0
Select the coordinate axis ( X axis ). X
3 0
Enter the nominal position value, for example 30 mm
and
select tool radius compensation R – .
R + / –
Confirm your entry. The nominal position now appears in the program block
display.
ENT
X R 0
Entering workpiece positions
Programming example: milling a shoulder
The coordinates are programmed in absolute dimensions.
The datum is the workpiece zero.
Corner X = 0 mm Y = 20 mm
Corner X = 30 mm Y = 20 mm
Corner X = 30 mm Y = 50 mm
Corner X = 60 mm Y = 50 mm
Summary of programming steps
⇒
⇒ ⇒ ⇒ ⇒ Press the PGM key.
⇒ ⇒ ⇒ ⇒ ⇒ Key in the number of the program you want to work on,
and press ENT.
⇒ ⇒ ⇒ ⇒ ⇒ Enter the nominal positions.
Running a completed program
Once a program has been completed it can be executed in the
PROGRAM RUN mode (see Chapter 10).
Example: Entering a nominal position in a program
(Block 9 in the example)
Program blocks
0 BEGIN PGM 10 Start of program, program number
1 F 9999 High feed rate for pre-positioning
2 Z+20.000 Clearance height
3 X–20.000 R0 Pre-position the tool in the X axis
4 Y–20.000 R0 Pre-position the tool in the Y axis
5 Z–10.000 Move tool to milling depth
6 F 200 Machining feed rate
7 M 3 Spindle ON, clockwise
8 Y+20.000 R+ Y coordinate, corner
9 X+30.000 R– X coordinate, corner
10 Y+50.000 R+ Y coordinate, corner
11 X+60.000 R+ X coordinate, corner
12 F 9999 High feed rate for retracting
13 Z+20.000 Clearance height
14 M 2 Stop program run, spindle OFF, coolant OFF
15 END PGM 10 End of program, program number
3
2
4
1
2
3
4
1