5699-E P-(ix)
SAFETY PRECAUTIONS
15.
For Safe Chuck Work
•
When using a chuck, refer to the instruction manual provided by the manufacture of the chuck.
And strictly observe the safety items stated in the manual.
•
Set the chuck gripping force by ensuring sufficient margin of safety (2 to 3 or over). Run the
spindle within the allowable speed range set at this time.
LE11214R0100100160001
•
In constant peripheral speed cutting, calculate the actual machining speed before designating
G50 (max. speed limit function).
LE11214R0100100160002
•
Secure the jaw gripping depth as much as possible.
LE11214R0100100160003
•
When gripping a workpiece, soft top jaws must be at the central area of the entire jaws stroke
(see the illustration) or the base line mark on the master jaws must be located within the appro-
priate chuck stroke range.
LE11214R0100100160004
Centrifugal force
µ×
(F0-f)
×
R0>F1
×
R1
F1
F0
R0
R1
(Cutting force)
N = (1000
×
V)
/
(
π
×
D)
N:Spindle speed
V:Cutting speed
π
:Circumference-to-diameter
ratio, 3.14
D:Machining diameter
Must be
deep
Appropriate stroke range
Central one third of the entire stroke
Entire stroke
