48
INSTALLATION
June 1999
96-8000
LEVELING THE VMC
Leveling of the machine is required to obtain the correct right angle geometry of the VMC's X, Y, and Z axes.
Incorrect level will result in out-of-round circle milling and incorrect linear interpolation.
Leveling is done in two steps: rough leveling to ensure the machine is level for coolant and oil drainage, and
fine leveling for axes' geometry. Finally, the spindle sweep is checked. Leveling is done without removing
any covers.
NOTE: Many factors can affect a machineîš’s ability to remain level îš— the rigidity of the
floor, the stability of the support under the floor, trains or trucks passing nearby,
seismic activity, and so on. Therefore, until your experience shows how often
re-leveling is required, you should check the machineîš’s level frequently after
it is installed.
Use a precision bubble level with each division equal to 0.0005 inch per 10 inches, or .05 mm per meter, or 10
seconds per division. Before starting, check the accuracy of your level. Set it on the table on the X-axis and
record the reading. Then turn it 180
o
and the reading should be the same. If it is not, the level is out of calibra-
tion and should be adjusted before you continue.
ROUGH L EVELING
NOTE: Be sure to have removed the plastic bolt covers from the retaining bolts before
continuing.
NOTE: For the VF-0/1/2, it may be necessary to pull the coolant tank toward the back
of the machine to access the leveling screws.
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