Kitagawa HG-A97-212, Инструкция по эксплуатации

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16
３−４．
Relationship between gripping part center height, static griping
force and input force / Relationship between top jaw mass moment
and gripping force loss
If the gripping part center height of the used top jaw is higher than the chuck surface, a
large load is applied to the master jaw, rever, jaw attaching bolts, etc. To prevent these
parts from being broken, it is necessary to use the machine by using a lower input force
than the allowable maximum input force.
Additionally, if the top jaw is larger and heavier, the centrifugal force generated at the
top jaw will increase. It is necessary to examine the dynamic gripping force considering
the centrifugal force and to use the machine at a rotation speed that can withstand the
cutting force.
Fig.3
・
Keep the height of the top jaw within the range of the gripping force limit
table. (Refer to Fig.3)
・
If the gripping part center height of the used top jaw is higher than the
chuck surface, use it at the input force (piston thrust force, draw pipe
drawing force) specified in the gripping force limit table. If it is used without
lowering the input, the chuck will break and this is dangerous as the chuck
and work will fly out.