HEIDENHAIN TNC 122 User Manual - Manual (Page 20)

3 Manual Operation and Setup
20 TNC 122
Entering tool length and radius
You can enter the length and radius of you tool in the TNC. The
TNC includes the tool radius in the position value when you posi-
tion with radius compensation (see p. 21).
The tool length is the difference in length
∆L between the tool and
the zero tool.
Sign for the length difference
∆∆∆∆∆L
If the tool is longer than the zero tool: ∆L > 0
If the tool is shorter than the zero tool:
∆L < 0
Position display in the tool axis
User parameter MP7285 defines whether the tool axis display
value shows the position of the tool tip or the tool datum.
Checking the tool data
To display the tool data:
⇒ ⇒ ⇒ ⇒ ⇒ Press the TOOL DEF key.
To display the tool length and tool axis:
⇒
⇒ ⇒ ⇒ ⇒ Press the downward-arrow key twice.
To return to the position display:
⇒
⇒ ⇒ ⇒ ⇒ Press the NO ENT key.
Example: Entering the tool length and radius
Tool radius: 8 mm
Tool length: 12 mm
Tool axis: Z
TOOL
DEF
Z
X
∆L
3
<0
∆L
2
>0
∆L
1
=0
R
1
T
1
T
2
T
3
R
2
R
3
TOOL
DEF
Z
L
7
>0
L
0
=0
T
0
T
7
R
7
X
ENT
1 2
ENT 8
Call the tool definition function.
Enter the tool RADIUS ( 8 mm ). Confirm your entry.
A X I S = .
L E N G T H = .....
R A D I U S = .....
Enter the tool AXIS ( Z ). Confirm your entry.
Enter the tool LENGTH ( 12 mm ). Confirm your entry.
ENT
Z
Fig. 3.1: Tool lengths and radii