FOR SAFE OPERATION -27-
SO-NL-B17E/O
WARNING
4.
If a thrust exceeding the allowable cylinder thrust is applied to the
chuck, the component parts or bolts of the chuck will be damaged,
causing loss of chuck gripping force. If this happens while the
spindle is rotating, the workpiece or chuck jaws will fly out, causing
serious injuries or damage to the machine.
For the allowable cylinder thrust, refer to the instruction manuals
prepared by the chuck and cylinder manufacturers.
5.
Take the height of the top jaw into consideration when determining
the chucking pressure. If the height is greater than the standard
height, reduce the cylinder thrust. If you fail to observe this warning,
large forces will act on the top jaw mounting bolts and the master
jaw, which could cause damage to the top jaw or master jaw. If
trouble of this nature occurs while the spindle is rotating, the
workpiece or chuck jaws will fly out, causing serious injuries or
damage to the machine.
For the relationship between top jaw height and allowable cylinder
thrust, refer to the instruction manuals prepared by the chuck and
cylinder manufacturers.
6.
When clamping or unclamping a workpiece in the chuck, ensure that
your hands will not be trapped by the workpiece, soft jaws, or
tailstock (if featured). If you work without sufficient care you could
be seriously injured.
7.
When machining long workpieces, always hold the free end of the
workpiece securely with the tailstock (if featured) or a steady rest (if
featured). If you do not support the free end the workpiece could
bend or shake while the spindle is rotating, causing accidents
involving serious injuries or damage to the machine.
8.
Before clamping a workpiece in the chuck, check using a pressure
gage that the correct hydraulic or air pressure is supplied to the
cylinder that actuates chuck operation. If no pressure is supplied or
the pressure level is low, the workpiece will fly out when the spindle
is started, causing serious injuries or damage to the machine.
9.
The T-nuts in the chuck must not protrude from the master jaw. If
they do the master jaw or T-nuts may be damaged, and machining
accuracy will be impaired. Breakage of the T-nuts or master jaw
while the spindle is rotating could cause accidents involving serious
injuries or damage to the machine.
10.
Mount soft jaws in the chuck in a well-balanced manner. Poor
balance will cause runout of the spindle and could cause the soft
jaws to fly out while the spindle is rotating, causing serious injuries
or damage to the machine. It will also adversely affect machining
accuracy.
