Kitagawa HG-A97-212, Инструкция по эксплуатации

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３−３．Relationship between gripping force and rotation speed
As the rotation speed becomes higher, the centrifugal force of the jaw increases and the
gripping force lowers. The curves displayed in Fig. 2 shows relationships between the
rotation speed and the centrifugal force when using the standard soft jaw. The
centrifugal force differs significantly depending on the size and shape of the top jaw and
the attaching position, therefore, when the rotation speed is high, actual measurement
using a Kitagawa gripping force meter is required.
Fig.2
・
In the case of processing a considerably unbalanced work, lower the
rotation speed. The work will fly out and this is dangerous.
・
Vibration is generated if there is unbalance due to the work and the jig, etc.
Vibration decreases process precision and shortens the working life of the
chuck, even possibly breaking it. Correct the unbalance by using a balance
weight, etc., or lower the rotation speed for use.
・
In the case of heavy cutting at high rotation speed, vibration is easily
generated in the same manner as the unbalance of the chuck, therefore, set
the cutting conditions appropriate for the dynamic gripping force and
machine rigidity.