2 | Reference Speed and Clamping Force Calculation
Specific cutting force k
NF
Cast bronze
metals
Red brass
Brass
Cast Al
Table 2: Specific cutting force k
The clamping ratio
conditions or obtained from Table 3.
Machining Ø d
20
40
60
20
1.0
2.0
3.0
40
0.5
1.0
1.5
60
0.33 0.67 1.0
80
0.25 0.5
0.75 1.0
100 0.2
0.4
0.6
150 0.13 0.27 0.4
200
0.2
0.3
250
0.16 0.24 0.32 0.4
300
0.2
350
0.17 0.23 0.29 0.43 0.57 0.72 0.86 1.0
400
500
600
700
800
Table 3: Clamping ratio
44 / 138
with feed s and adjustment angle 45°
c
HB 0.80-1,20 1.20 1.10 1.00 0.90 0.80 0.75
0.30-0.422.60 1.10 1.00 0.90 0.80 0.70 0.65
(kN/mm²)
c
can either be determined from the specified working
(mm)
z
80
100 150 200 250 300 350 400 500 600 700 800
4.0
2.0
2.5
3.8
1.3
1.7
2.5
3.3
1.3
1.9
2.5
0.8
1.0
1.5
2.0
0.53 0.67 1.0
1.3
0.4
0.5
0.75 1.0
0.6
0.8
0.27 033 0.5
0.67 0.83 1.0
0.2
0.25 0.38 0.5
0.16 0.2
0.3
0.4
0.17 0.25 0.33 0.42 0.5
0.21 0.29 0.36 0.43 0.5
0.19 0.25 0.31 0.37 0.44 0.5
2.55 2.35 2.20 2.05 1.90 1.80
1.10 1.00 0.90 0.80 0.70 0.65
4.2
3.1
3.8
4.4
2.5
3.0
3.5
4.0
1.7
2.0
1.3
2.7
1.3
1.5
1.8
2.0
1.0
1.2
1.4
1.6
1.2
1.3
1.1
0.62 0.75 0.87 1.0
0.5
0.6
0.7
0.8
0.58 0.67 0.83 1.0
0.57 0.71 0.86 1.0
3.3
4.0
2.5
3.0
3.5
4.0
2.0
2.4
2.8
3.2
1.7
2.0
2.3
2.7
1.4
1.7
2.0
2.3
1.3
1.5
1.8
2.0
1.0
1.2
1.4
1.6
1.2
1.3
1.1
0.62 0.75 0.87 1.0
RN-1391