Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set User Manual
Page 473
Angled-Wheel Grinding
Chapter 14
14-5
The angle of the wheel axis should already have been established before
attempting to enter angled wheel mode. You can not change the value of
the angled wheel axis in angled wheel mode. Any rotary axis or PAL
interface that determines the wheel axis angle must be disabled in angled
wheel mode (unless the rotary axis is being homed, see page 14-3).
The following features should be considered when in one of the
angled-wheel grinding modes:
Probing
If a probing operation is performed while in one of the angled-wheel
grinding modes (G16.3 or G16.4), only the real axes coordinates are saved.
Virtual X axis coordinates are not recorded and are not used for any
probing calculations.
CSS (Constant Surface Speed)
The virtual X axis is used for CSS when in the angled-wheel mode and the
W axis has been selected in AMP as the diameter axis. The system
installer could also allow the selection of S (wheel spindle) as the CSS
axis. In this case the wheel size as specified on the in process dresser
screen is used for CSS calculations.
If not in angled-wheel mode, CSS is still valid however the W axis is used
to calculate CSS. This will cause some inaccuracy in part spindle speed
because the angle of the W axis is not used in CSS calculations. CSS is
not recommended in G15 mode because of the angle of the W axis.
In Process Dresser
This feature is not available on an angled-wheel grinder. The in process
dresser screens and softkeys however are available to allow the entry of
CSS information.
Mirror Imaging
Mirroring can be performed as follows:
In this mode:
These axes can be mirrored:
G16.3
X and Z (can not mirror W)
G16.4
X and Z (can not mirror W)
G15
Z and W (can not mirror X)
Refer to your system installers documentation for details on how axis
mirroring is performed.
Radius and Diameter Modes
Both radius and diameter modes (G07 and G08) are available on an
angled-wheel grinder. The control will not allow the X and W axes to be
in different radius/diameter modes. Both the X and W axes are forced by
the control to be in the same mode (G07 or G08).