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(3) Before running machine, make sure the workpiece is gripping internally or
internally, since low chuck pressure will diminish jaw gripping force which
may allow the workpiece to come out of the jaws. Excessive pressure can
damage a power chuck which could cause a loss of jaw force. The gripping
force of a power chuck can be ordiminished as much as 50% because of lack
of lubrication or lack of periodic cleaning, components of the chuck are
subject to wear and damage which also can lessen gripping power. Need
support workpiece by steady rest or tailstock center while workpiece length
over 200mm.
A. Grease the chuck at the beginning of every shift, use only the chuck
manufacturer's recommended lubricant.
B. A weekly examination of the condition of the chuck, this examination should
include the measurement of jaw clamping force with a jaw force gage to insure
that chuck is functioning as it should.
C. With reference to manufacturer's manual for chuck and cylinder to any other
maintenance requirements. As the spindle r.p.m. increase the gripping force
of the jaw decreases, various types of top jaws are used on chucks for different
applications, the best workholding conditions that need use serrated contact
surfaces on work gripping surfaces and use the maximum area of contact
between the jaws and the workpiece, improper use cause injury.
(4) If chuck or accessory was not supplied by MICROWEILY with machine
together, verify the safe operating speed by their manufacturer.
(5) Always be sure the chuck or acccssory is located correctly on the spindle nose
and it is securely bolted to the face of spindle.
(6) Be sure any item bolted or clamped to a chuck or fi xture is securely fastened
before starting the spindle.
(7) The spindle speed could not be high speed during the workpiece too long.
(8) Always be aware that closing chuck jaws can trap fi ngers or hands.
(9) The same safety instructions apply to power chucks and manual operated
chucks, the following additional precautions for manual chuck when you use
it.
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