HYDROK
Use and limits of use
Order h49 7144.907-333
45
Size of clamping
head
Distance to mass
center of gravity
𝒓
𝒔
[𝒎]
in smallest
position
Clamping head
mass
𝒎[𝒌𝒈]
140
0.062
9
.
1
0
160
0.075
1
2
.
2
0
Table 11: Clamping head mass and distance of mass center of gravity
of clamping head segments to the rotational axis
Determining the required clamping force
INFORMATION
𝑆
from Table 6
𝑐
from Table 8
𝑘
𝑐
from Table 9
𝜇
𝑎
, 𝜇
𝑡
from Table 10
𝑟
𝑠
, 𝑚
from Table 11
I
𝐹
𝑟𝑎𝑑 𝑒𝑟𝑓
= 𝑆 ∗ 𝑐 ∗ (1.6 ∗ (𝐹
𝑠𝑧
+ 𝐹
𝑠𝑘
) + 𝐹
𝑓𝑧
)
INFORMATION
Factor
1.6
takes account of possible fluctuations that
may occur during power transmission.
II
𝐹
𝑠𝑧
= 1.3 ∗ √(
𝐹
𝑐
∗𝑑
𝑧
+2∗𝑀
𝐵
𝑑
𝑠𝑝
∗𝜇
𝑡
)
2
+ (
𝐹
𝑐
+𝐹
𝐵
𝜇
𝑎
)
2
Turning [inner and outer]
𝐹
𝑐
= 1.3 ∗ 𝑎
𝑝
∗ 𝑓 ∗ 𝑘
𝑐
Drilling [drilling solid materials, double-bladed
tool, concentrically towards the workpiece axis]
𝐹
𝐵
= 0.45 ∗ 𝐷
𝐵
∗ 𝑓
𝑛
∗ 𝑘
𝑐
𝑀
𝐵
=
𝑓
𝑛
∗𝐷
𝐵
2
∗𝑘
𝑐
5700
INFORMATION
When calculating machining forces, a level of
tool blunting is built in, corresponding to a wear
mark width of
0.3𝑚𝑚
.
