1 undercut and thread parameters, Undercut din 76, parameters – HEIDENHAIN CNC Pilot 4290 V7.1 User Manual
Page 684
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1
.1 Under
c
ut and Thr
ead P
a
ra
met
e
rs
11.1 Undercut and Thread
Parameters
Undercut DIN 76, Parameters
TURN PLUS determines the parameters for the thread undercut
(undercut DIN 76) from the thread pitch. The undercut parameters are
in accordance with DIN 13 for metric threads.
External thread
External thread
Thread pitch
I
K
R
W
Thread pitch
I
K
R
W
0.2
0.3
0.7
0.1
30°
1.25
2
4.4
0.6
30°
0.25
0.4
0.9
0.12
30°
1.5
2.3
5.2
0.8
30°
0.3
0.5
1.05
0.16
30°
1.75
2.6
6.1
1
30°
0.35
0.6
1.2
0.16
30°
2
3
7
1
30°
0.4
0.7
1.4
0.2
30°
2.5
3.6
8.7
1.2
30°
0.45
0.7
1.6
0.2
30°
3
4.4
10.5
1.6
30°
0.5
0.8
1.75
0.2
30°
3.5
5
12
1.6
30°
0.6
1
2.1
0.4
30°
4
5.7
14
2
30°
0.7
1.1
2.45
0.4
30°
4.5
6.4
16
2
30°
0.75
1.2
2.6
0.4
30°
5
7
17.5
2.5
30°
0.8
1.3
2.8
0.4
30°
5.5
7.7
19
3.2
30°
1
1.6
3.5
0.6
30°
6
8.3
21
3.2
30°
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