HEIDENHAIN iTNC 530 (34049x-08) ISO programming - Manual (Page 394)

394 Programming: Special functions
1
1
.7 A
c
tiv
e Chat
ter Contr
o
l (A
CC; sof
tw
ar
e option)
11.7 Active Chatter Control (ACC;
software option)
Application
Strong forces come into play during roughing (power milling).
Depending on the tool spindle speed, the resonances in the machine
tool and the chip volume (metal-removal rate during milling), the tool
can sometimes begin to "chatter." This chattering places heavy strain
on the machine, and causes ugly marks on the workpiece surface. The
tool, too, is subject to heavy and irregular wear from chattering. In
extreme cases it can even break the tool during operation.
To reduce the inclination to chattering, HEIDENHAIN now offers an
effective antidote with the Active Chatter Control (ACC) control
function. The use of this control function is particularly advantageous
during heavy cutting. ACC makes substantially higher metal removal
rates possible. This makes it possible to increase your metal removal
rate by up to 25 % and more, depending on the type of machine. You
reduce the mechanical load on the machine and increase the life of
your tools at the same time.
Activating/deactivating ACC
In order to activate ACC you need to set the column ACC for the
respective tool in the tool table TOOL.T to 1. Other settings are not
required.
In order to deactivate ACC, you need to set the column ACC to 0.
The ACC feature must be enabled and adapted by the
machine tool builder. Refer to your machine manual.
Please note that ACC was developed especially for heavy
cutting and is particularly effective in this area. You need
to conduct appropriate tests to ensure whether ACC is
also advantageous during standard roughing.