Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario Pagina 480

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Angled-Wheel Grinding
Chapter 14
14-12
This section covers how axis position registers are presented on the
operator panel . Some screens will show a combination of the following
axis position registers:
Z (real) -- This is the physical position of the grinding wheel along the Z
axis slide relative to a fixed position. This does not change with W axis
motion.
Z (virtual) -- This is the position of the grinding wheel along the Z axis
relative to a fixed position on the machine which is not on the Z axis
slide. This position is changed by W axis motion. Note that in the
G16.4 mode the Z (real ) position will not change during the W move
because the Z axis attains its real endpoint in a separate move. The Z
(virtual) position changes during both steps one and step two in G16.4
mode.
W (real) -- This is the physical position of the grinding wheel along the
W axis slide relative to a fixed position. Thereis no W (virtual) display.
X (virtual) -- this is a virtual diameter axis. It is orthogonal to the Z axis
of the machine. There is no physical hardware that makes up an X axis
so there is no X (real) position display.
Other Axes (real) -- All other axes selected to appear on position
displays will be the actual physical position along their respective axis
slide.
The Z and W axis display remains on all screens regardless of whether in
angled-wheel mode or not. The X axis position display only appears when
in one of the angled wheel modes. The position displays when in angled
wheel mode are as shown in t he following table:
ThisPosition
Display:
Absolute Programmed Target DTG Following Error
ShowstheseAxis
P
o
s
i
t
i
o
n
s
:
Z (real) Z (virtual) Z (virtual) Z (virtual) Z (real)
P
o
s
i
t
i
o
n
s
:
X(virtual) X (virtual) X(virtual) X(virtual) --
W (real) W(real) W (real) W (real) W (real)
OtherAxes OtherAxes Other Axes OtherAxes OtherAxes
Note: The word (real)and (virtual)do not physicallyappear withthe axisposition displays. They areshown
hereforclarityonly.
When not in angled-wheel mode (G15) all position displays show (real)
values. There is no X (virtual) or Z (virtual) in G15 mode.
14.4
PositionDisplays for
Angled-Wheel Grinders
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