Operation Manual

HEIDENHAIN MANUALplus 4110 525
10.2 Undercut Parameters
10.2 Undercut Parameters
DIN 76—undercut parameters
MANUALplus determines the parameters from the thread
pitch according to the following table.
Designations:
I = undercut diameter
K = undercut length
R = undercut radius
W= undercut angle
Thread undercut DIN 76—external thread Thread undercut DIN 76—internal thread
Thread pitch I K R W Thread pitch I K R W
0.2 D –0.3 0.7 0.1 30° 0.2 D +0.1 1.2 0.1 30°
0.25 D –0.4 0.9 0.12 3 0.25 D +0.1 1.4 0.12 30°
0.3 D –0.5 1.05 0.16 30° 0.3 D +0.1 1.6 0.16 3
0.35 D –0.6 1.2 0.16 3 0.35 D +0.2 1.9 0.16 30°
0.4 D –0.7 1.4 0.2 30° 0.4 D +0.2 2.2 0.2 30°
0.45 D –0.7 1.6 0.2 30° 0.45 D +0.3 2.4 0.2 30°
0.5 D –0.8 1.75 0.2 30° 0.5 D +0.3 2.7 0.2 30°
0.6 D –1 2.1 0.4 30° 0.6 D +0.3 3.3 0.4 30°
0.7 D –1.1 2.45 0.4 30° 0.7 D +0.3 3.8 0.4 30°
0.75 D –1.2 2.6 0.4 30° 0.75 D +0.3 4.0 0.4 30°
0.8 D –1.3 2.8 0.4 30° 0.8 D +0.3 4.2 0.4 30°
1 D –1.6 3.5 0.6 30° 1 D +0.5 5.2 0.6 30°
1.25 D –2 4.4 0.6 30° 1.25 D +0.5 6.7 0.6 30°
1.5 D –2.3 5.2 0.8 30° 1.5 D +0.5 7.8 0.8 30°
1.75 D –2.6 6.1 1 30° 1.75 D +0.5 9.1 1 30°
2 D –3 7 1 30° 2 D +0.5 10.3 1 30°
2.5 D –3.6 8.7 1.2 30° 2.5 D +0.5 13 1.2 30°