Wuhan Huazhong Numerical Control HNC-18M, Operator'S Manual, Page: 43 / 119

HNC-18/19T Operator’s Manual
29
3 MANUAL OPERATION
Manual Operation (
MAN
) uses various input devices to carry out
operations much like those of a manual mill. While the internal
computer is actually controlling the machine tool during these
operations, they are familiar to an operator that has machined parts
on a manual mill.
MAN
operations are primarily used for setting up parts. In
MAN
mode, the cutter can be moved into position near the workpiece
where sample cuts can be made for setting the workpiece reference.
In addition the cutter can be moved out of the way to get access to
the part for measuring. For an experienced mill operator that has
little or no experience on an NC mill, these operations are a good
place to start. You can understand how familiar operations are
implemented on an NC machine.
The five
MAN
operations include:
JOG feed:
Moving the cutting tool along a motion axis while an
axis button is being pressed.
INCremental feed
: Moving the cutting tool a fixed amount along
a motion axis
Manual Handwheel:
Move the cutting tool by manually
rotating the handwheel
Spindle operation:
Turn spindle rotation clockwise,
counter-clockwise or off.
Auxiliary operation:
Change other devices such as chuck,
coolant and turret