1.
Pressure Coef.: pressure coefficient
2.
Sliding-V Coef.: sliding
velocity coefficient
3.
Hardness Coef.: hardness
coefficient
4.
Wear Coef.: wear
coefficient
5.
Hardness: hardness
6.
Dynamic Para: dynamic parameter
Toggle
on DYNAMIC PARA option and click SET button, and the user can enter the dynamic
parameter setting dialog box, as shown in Figure
8.5.2. After quitting eta/ POST, the dynamic parameter will
be automatically saved in the configuration file. These parameters will be
loaded automatically when you open eta/POST next time.
Figure 8.5.2 . Dynamic parameter option
In
the dynamic parameter setting dialog box, W depth means wear depth level, K
depth means wear coefficient level and H depth means hardness level. The
condition is W1 < W2 < W3.
The purpose of dynamic parameters
is to apply the property of real worn tool specification. With the wear depth
increasing, the wear coefficient and material hardness will no longer be
constant number, they can be changed. For example, the wear coefficient can be
increased and the hardness value can be decreased.
During the tool wear calculation
for each calculating step, the calculated wear depth will be compared to the
user-defined W depth level and then its corresponding K and H should be
reflected, as shown in Figure
8.5.3. Suppose the current calculated wear result is W, the
current wear coefficient is K, the current hardness is H; the user defined wear
depth levels are W1, W2, W3, the user defined wear coefficient levels are K1,
K2, K3, the user defined hardness levels are H1, H2, H3.
If W≤ W1, K= K1 H = H1
If W1< W≤ W2, K=K2 H
= H2
If W2< W≤ W3, K=K3 H
= H3
If W> W3, K=K3 H
= H3
Figure 8.5.3 Tool wear schematic illustration