knocking; otherwise, it may cause small pits on outer and inner rings of ball
bearing which may damage its internal high speed bearing. Under the
circumstance, the ball will roll and stop at the pit during high speed rolling, and
keep pounding; in this case, the ball will be broken soon, and the bearing is
damaged completely. And the phenomenon is the rotator of the electrical spindle
cannot rotate at all.
During tool change, the tool holder shall enter adequately into inner taper wall
(appressed) of electrical spindle, otherwise, it may cause the rivet of tool holder
drop from the handle of electrical spindle, and the draw bar will return sharply
by the effect of spring, and causes the broken of draw bar. The operation
measures shall be as follows: when change tool manually, plug hardly the tool
holder into inner taper hole of electrical spindle, and then loose the button to
clamp the tool holder; when change tool automatically, it shall obviously
observe that the clamp move downward about 0.1~0.2mm.
Make sure to apply high speed tool holder that specified by supplier of HQD
electrical spindle, otherwise, it may cause the rivet dropping from the handle
because of the cooperation between rivets, and the draw bar will return sharply
by the effect of spring, and causes the broken of draw bar.
If the machine stop urgently during machining process, and the tool is still in the
work piece, please do not lift the electrical spindle directly, otherwise, it may
break its drawbar; and it shall loose the tool holder firstly, and then poll out the
tool manually out from the work piece;
