HEIDENHAIN TNC 640, User Manual, Page: 538 / 948

Special Functions | Adaptive Feed Control AFC (option 45)
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
Defining basic AFC settings
In the AFC.TAB table, which must be saved in the
TNC:\table
directory, you enter the control settings with which the control
performs the feed rate control.
The data in this table are default values that were copied into a file
belonging to the respective machining program during a teach-in
cut. The values act as the basis for regulation.
If you define a tool-specific reference power using
the
AFC-LOAD
column in the tool table, the control
generates the associated file for the relevant machining
program without a teach-in cut. The file is created
shortly before the control becomes effective.
Enter the following data in the table:
Column Function
NR
Consecutive line number in the table (has no further
functions)
AFC
Name of the control setting. You enter this name
in the
AFC
column of the tool table. It specifies the
assignment of control parameters to the tool.
FMIN
Feed rate at which the control is to conduct a
shutdown response. Enter the value in percent with
respect to the programmed feed rate. Input range:
50 to 100 %
FMAX
Maximum feed rate in the material up to which the
control can automatically increase the feed rate.
Enter the value in percent of the programmed feed
rate.
FIDL
Feed rate for traverse when the tool is not cutting.
Enter the value in percent of the programmed feed
rate.
FENT
Feed rate for traverse when the tool moves into or
out of the material. Enter the value in percent with
respect to the programmed feed rate. Maximum
input value: 100 %