DFD6361-Maintenance.pdf - 第157页
B-85 Safety pr ecautio ns for mou nting th e hub mo unt (2.2 k W spindle) ( Continued) W ARNING - If the l ock bolt is ti ghtene d to a torq ue smaller tha n specified, it ma y come of f to incur h ub mount sep aration t…
B-84
2-6-2. Mounting the hub mount (2.2 kW spindle)
Safety precautions for mounting the hub mount (2.2 kW spindle)
WARNING
- In the hub-mount mounting operation, you have to touch the
spindle-axis section and axis operating section directly by your
hands. Unless the spindle stops, your hands or fingers may be
caught or cut off.
Before opening the splash cover, visually make sure from outside of
the cover that the spindle is completely stopped.
Ensure that no other person touches the machine during operation.
While you don't use the touch panel, press the Disco's logo button
located at the upper left of the screen in order to lock up and
deactivate the touch panel.
- If the spindle is rotated at a speed higher than the maximum
permissible speed for the blade outside diameter, blade breakage
or hub mount separation may occur and cause personal injury or
damage to the machine.
The spindle rotating speed varies depending on the outside
diameter of the installed blade. Be sure that the employed spindle
rotating speed is suitable for the outside diameter of the installed
blade.
Blade
diameter
[inch]
Maximum spindle
rotating speed
[min
-1
(rpm)]
Time to reach
maximum
speed [s]
Time needed for
complete stop [s]
3 30,000 30 15
B-85
Safety precautions for mounting the hub mount (2.2 kW spindle) (Continued)
WARNING
- If the lock bolt is tightened to a torque smaller than specified, it may
come off to incur hub mount separation that could cause personal
injury or damage to the machine.
Tighten the lock bolt to the specified torque with the supplied torque
wrench.
[Procedures for tightening the lock bolt]
1: Torque the lock bolt to 8.0 N·m.
2: Close the cover.
3: Turn ON the spindle at the rotating speed to be used for cutting.
(Any button operation including turning OFF the spindle will be
deactivated until the rotating speed reaches the maximum.)
4: After the spindle rotation for sufficient time, turn OFF the spindle.
(Spindle rotations for too short time may cause flange loosing
while cutting. Take due account of the "Time to reach maximum
speed" in the table below.)
5: Torque the lock bolt to 8.0 N·m again.
Lock bolt
Hub mount
Blade
diameter
[inch]
Maximum spindle
rotating speed
[min
-1
(rpm)]
Time to reach
maximum
speed [s]
Time needed for
complete stop [s]
3 30,000 30 15
B-86
Safety precautions for mounting the hub mount (2.2 kW spindle) (Continued)
CAUTION
When you mount a hub mount to the 2.2kW spindle, you should
insert the washer between the lock bolt and hub mount.
Without the washer, you cannot screw up the lock bolt tight, thus, you
cannot mount the hub mount.
Washer