4 rapid feedrate – Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set User Manual
Page 429

Axis Motion
Chapter 12
12-57
Figure 12.29
Feed Per Revolution Mode (G95)
F
“F” is the distance the
wheel moves per revolution
of the workpiece
Grinding
wheel
B
A
If G95 F.2 is the feedrate, the
wheel moves from A to B
in 100 revolutions of the workpiece
Workpiece
Workpiece
20.0
Grinding
wheel
Grinding
wheel
Grinding
wheel
12040-I
Rapid feedrate is used to position axes to a specified point at a high speed.
It is called by executing a G00 followed by an axis motion command. It is
also called automatically for some of the motions made by the fixed cycles
(see the fixed cycle specifications in chapters 15 and 16).
When more than one axis is commanded to move at rapid feedrate, they
are driven together to produce a linear move. The control drives one of the
axes at its rapid feedrate and reduces the feedrate of the others as required
to insure that all axes start and stop at the same time.
When rapid positioning (G00) is canceled, the control restores the
previously commanded F--word feedrate.
Axes can also be driven at their maximum allowable speeds during the
jogging operations by holding down the
a jog move (for details on jogging an axis, see chapter 4).
12.7.4
Rapid Feedrate
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