SUA 125 NUMERIC
34200003 TOS a.s. 02/2011
61
5.2.9.1. Load of clamping centre in dependence on overhang
of tailstock sleeve
Diameter of tailstock sleeve is 165 mm.
Workpiece clamped between centres, centre angle 60.
H [mm] F
ZH
[N] G
H
[kg]
0 60 000 6 000
50 53 000 5 600
100 47 000 5 100
150 41 000 4 700
200 35 000 4 250
250 29 000 3 800
300 23 000 3 400
350 16 000 3 000
Legend
Values in table:
H ……… Overhang of tailstock sleeve [mm]
F
ZH
……… Cutting force (tangential component [N]
G
H
……… Mass of workpiece [kg]
If the overhang of tailstock sleeve is increased then the centre rigidity is comprehensively reduced. (If can arrise the
limiting conditions during machining and the resulting accuracy can be influenced.)
The values introduced in the table are stated en steps (after 50 mm extension from tailstock sleeve).
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