SPANNTOP [nova] – Safety
Chuck size
Maximum chuck length
[mm]
Fc max / [N]
32
< 120
1.900
42
< 125
3.600
52
< 125
3.600
65
< 140
5.000
80
< 140
6.000
100
< 160
8.000
125
< 200
12.000
140
< 200
12.500
160
< 200
14.000
Table 8: Maximum permissible cutting force
With extended chuck length, the maximum permissi-
ble cutting force must be reduced in the ratio of the
feed lengths, e.g. size 32, L=150mm
120mm
150mm
∗
1900N
=
1520N
2.10.5.4 For principle 4: Fq ≤ Fq max
For drilling tasks radial to the workpiece axis, due to
the feed force of the tool, transverse forces occurs
that ultimately act on the chuck. This load when dril-
ling must be viewed as equivalent to the cutting force
when turning, and consequently it must also be limi-
ted. The permissible maximum values are provided in
the table below.
Occurring feed force F
B
when drilling [transverse for-
ce]
[Full-drilling, two-edged tool, machining direction 90°
transverse to the chuck axis]
Fq
=
F
B
=
0,45
∗
D
B
∗
f
n
∗
k c
kc
From table 4
32
Содержание SPANNTOP NOVA
Страница 1: ...Installation manual SPANNTOP nova combi pull back combi deadlength modular...
Страница 44: ...SPANNTOP nova Technical data 3 2 1 Clamping force diagram size 32 Fig 5 44 Order hotline 49 7144 907 333...
Страница 45: ...SPANNTOP nova Technical data 3 2 2 Clamping force diagram size 42 52 Fig 6 Order hotline 49 7144 907 333 45...
Страница 46: ...SPANNTOP nova Technical data 3 2 3 Clamping force diagram size 65 80 Fig 7 46 Order hotline 49 7144 907 333...
Страница 47: ...SPANNTOP nova Technical data 3 2 4 Clamping force diagram size 100 125 Fig 8 Order hotline 49 7144 907 333 47...
Страница 48: ...SPANNTOP nova Technical data 3 2 5 Clamping force diagram size 140 160 Fig 9 48 Order hotline 49 7144 907 333...
Страница 110: ...SPANNTOP nova Appendix 110 Order hotline 49 7144 907 333...