HEIDENHAIN TNC 620 User Manual page 415

11.3 Active Chatter Control ACC (option
145)
Application
Refer to your machine manual.
This feature must be enabled and adapted by the
machine tool builder.
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
of this control function is particularly advantageous during heavy
cutting. ACC makes substantially higher metal removal rates
possible. This enables you 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.
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.
When you use the ACC feature, you must enter the
number of tool cuts CUT for the corresponding tool in
the TOOL.T tool table.
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
Active Chatter Control ACC (option 145) 11.3
ACC (Active Chatter Control). The use
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