HEIDENHAIN iTNC 530 (60642x-04) - Manual (Page 457)

HEIDENHAIN iTNC 530 457
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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 result in tool breakage.
To reduce the inclination to chattering, HEIDENHAIN now offers an
effective antidote with ACC (Active Chatter Control). 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. If ACC is active, the TNC shows a corresponding symbol in
the position display.
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.