REGO-FIX Main Catalogue ENGLISH

Comparison
The comparison between the overall system and a single toolholder
demonstrates that the balance of the individual component has a very small
effect on the overall system.
Overall system
Machine spindle
for HSK-A 63
15,000 g
Toolholder
HSK-A 63
ER32X080-H
1035 g
Collet
ER 32-UP
6.00 – 5.00
150 g
Seal disk
DS / ER 32
6.00 – 5.50
15 g
Clamping nut
Hi-Q ERC 32
15 g
Cutter with
internal cooling
ø 6 mm
30 g
Weight
16398 g
Radius (R)
31.5 mm
Speed 10,000 min -1 42,000 min -1
Balance quality (G) 2.5 2.5
Permitted residual unbalance (U zul ) 39.146 gmm 9.321 gmm
Permitted eccentricity (e zul ) 2.387 μm 0.568 μm
U zul10 000 =
e zul10 000 =
u 10 000 =
2.5 x 16,398 x 9.549
2.5 x 16,398 x 9.549
= 39.146 gmm U zul42 000 =
10,000 42,000
39.146
9.321
= 2.387 µm e zul42 000 =
16,398 16,398
39.146
9.321
= 1.2 g u 42 000 =
31.5 31.5
= 9.321 gmm
= 0.568 µm
= 0.3 g
By calculation the entire system is allowed 1.2 g at 10,000 min -1 and 0.3 g at 42,000 min -1 and the permissible unbalanced
mass is at its greatest diameter (in this case the spindle rotor). The following calculation is used to demonstrate how little
unbalanced mass of a toolholder HSK-A 63 / ER32 x 080 is acceptable in comparison to the overall system:
Weight
Radius (R)
1035 g
31.5 mm
Speed 10,000 min -1 42,000 min -1
Balance quality (G) 2.5 2.5
Permitted residual unbalance (U zul ) 2.471 gmm 0.588 gmm
Permitted eccentricity (e zul ) 2.387 μm 0.568 μm
U zul10 000
=
e zul10 000
=
u 10 000
=
2.5 x 1035 x 9.549
2.5 x 1035 x 9.549
= 2.471 gmm U zul42 000
=
10,000 42,000
2.471
0.588
= 2.380 µm e zul42 000
=
1035 1035
2.471
0.588
= 0.078 g u 42 000
=
31.5 31.5
= 0.588 gmm
= 0.568 μm
= 0.019 g
If now the allowable imbalance masses are compared, it is evident that in the overall system may be about 15 times larger
than in the toolholder alone. The current state of balancing technology is not economically producible when just looking at the
toolholder, but when the entire system is considered it may not necessary. An imbalance caused by positioning error can’t be
corrected or accounted for.
312 Technical information