Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 442)

Axis Motion
Chapter 12
12-70
Cutting Mode (G64 - - modal)
G64 establishes the cutting mode. This is the normal mode for axis motion
and generally is selected by your system installer as the default mode
active on power-up. When active, motion commands begin as soon as the
motion command of the previous block has been completely issued. G64
does not wait for in-position band.
Automatic Corner Override (G62 - - modal)
In compensation mode (G41/G42), the load on the grinding wheel
increases while moving inside a corner. If the G62 automatic corner
override mode is active, the control automatically overrides the
programmed feedrate to reduce the load on the wheel.
Figure 12.35
Automatic Corner Override (G62)
programmed wheel path
radius center path
A
A
a b
c
a
b
c
Grinding
wheel
Grinding
wheel
12042-I
When the corner angle (A) is larger than the value set for “min. angle for
corner override” in AMP, the programmed feedrate is overridden from
point “a” to point “b,” and from point “b” to point “c.”
Your system installer sets the following values in AMP:
Min angle for corner override ---- minimum angle (A) between
programmed paths before corner override is activated
Corner override distance (DTC) -- vector distance from and of current
move (b) to point on programmed path (a) where corner override is
activated