FANUC Series 16/18/160/180-Model C Machining Center Operators Manual

PROGRAMMING
B–62764EN/01
5. FEED FUNCTIONS
81
The feed functions control the feedrate of the tool. The following two feed
functions are available:
1. Rapid traverse
When the positioning command (G00) is specified, the tool moves at
a rapid traverse feedrate set in the CNC (parameter No. 1420).
2. Cutting feed
The tool moves at a programmed cutting feedrate.
Override can be applied to a rapid traverse rate or cutting feedrate using
the switch on the machine operators panel.
To prevent a mechanical shock, acceleration/deceleration is automatically
applied when the tool starts and ends its movement (Fig. 5.1 (a)).
F
R
Rapid traverse rate
Time
T
R
T
R
F
R
: Rapid traverse
rate
: Acceleration/
deceleration time
constant for rap-
id traverse rate
0
Time
Feed rate
F
C
F
C
0
T
C
T
C
T
R
T
C
: Feedrate
: Acceleration/
deceleration time
constant for a cut-
ting feedrate
Fig. 5.1 (a) Automatic acceleration/deceleration (example)
5.1
GENERAL
D Feed functions
D Override
D Automatic acceleration/
deceleration

Leave a Reply

Your email address will not be published. Required fields are marked *