Table 1 Determining The Chip Cross Section (Mm²); Table 2 Specific Cutting Force Kc (Kn/Mm²) - Rohm Norm RN 1391 Informaciones Y Directivas Generales Para El Empleo De Instalaciones De Sujeción Accionadas Por Fuer

Depth of cut t (mm)
Feed 2
(mm)
0.16
0.20
0.25
0.32 0.64
0.40 0.8
0.50 1.0
0.63 1.26
0.80 1.6
1.0 2.0
1.25 2.5
1.60 3.2
Table 1: Determining the chip cross section (mm²)
The specific cutting force k
Table 2.
Specific cutting force k
Material
Steels St 42 (1.0130)
St 50-2 (1.0050)
St 60-2 (1.0060)
C 45 (1.0503)
C 60 (1.0601)
St 70-2 (1.0070)
18CrNi8 (1.5920)
42CrMo4 (1.7225)
16MnCr5 (1.7131)
Mn, CrNi
Mn-
austentic st.
Cast GE 240 (GS-45)
iron
GE 260 (GS-52)
material
EN-GJL-160 (GG 16)
EN-GJL-250 (GG 25)
RN-1391
Reference Speed and Clamping Force Calculation |
3 4 5
0.8
0.8 1.0
0.75 1.0 1.25
0.96 1.28 1.6
1.2 1.6 2.0
1.5 2.0 2.5
1.89 2.52 3.15
2.4 3.2 4.0
3.0 4.0 5.0
3.75 5.0 6.25
4.8 6.4 8.0
as a function of feed can be obtained from
c
with feed s and adjustment angle 45°
c
Strength B kN/
sino 0.50
0.52
0.62
0.67
0.77
0.72
0.63
0.73
0.77
0.85-1.00
0.30-0.50
0.50-0.70
HB 2.00
HB 2.00-2.50 2.05 1.80 1.60 1.45 1.30 1.15
6 7 8
0.96 1.12 1.28
1.2 1.4 1.6
1.5 1.75 2.0
1.96 2.24 2.56
2.4 2.8 3.2
3.0 3.5 4.0
3.78 4.41 5.04
4.8 5.6 6.4
6.0 7.0 8.0
7.5 8.75 10.0
9.6 11.2 12.8
mm²
0.16 0.25 0.4
2.60 2.40 2.20 2.05 1.90 1.80
3.50 3.10 2.75 2.45 2.15 1.95
3.05 2.80 2.60 2.40 2.20 2.05
4.35 3.80 3.30 2.90 2.50 2.20
4.35 3.90 3.45 3.10 2.75 2.45
3.75 3.30 2.95 2.60 2.30 2.05
3.70 3.40 3.10 2.80 2.55 2.35
5.40 4.90 4.40 4.00 3.60 3.30
2.30 2.10 1.95 1.80 1.70 1.60
2.55 2.35 2.20 2.05 1.90 1.80
1.50 1.35 1.20 1.10 1.00 0.90
9 10 11
1.44 1.6 1.92
1.8 2.0 2.4
2.25 2.5 3.0
2.88 3.2 3.84
3.6 4.0 4.8
4.5 5.0 6.0
5.67 6.3 7.56
7.2 8.0 9.6
9.0 10.0 12.0
11.25 12.5 15.0
14.4 16.0 19.2
Feed s (mm)
0.63 1.0
2
12
EN
0.16
0.20
0.25
0.32
0.40
0.50
0.63
0.80
1.0
1.25
1.60
1.6
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