Rohm DURO-A RC, Перевод оригинальной инструкции по эксплуатации

Страница: 75 / 91

Operation | 6
DURO-A RC 75 / 91
In the case of collet chucks with base and top jaws, where the top jaws AB
are moved to change the clamping range and the base jaws approximately
maintain their radial position, the following applies:
[mkg] (7)
M
cGB
is to be taken from the table:
Chuck size 180 215 260 315 400
Centrifugal force
M
cGB
per base
jaw [mkg]
0.0151 0.0306 0.0637 0.1158 0.1628
M
cAB
is to be taken from the following formula:
[mkg] (8)
6.2.3 Permissible Speed
To determine the permissible speed for a certain machining task, the following
formula applies:
[min
-1
] (9)
The max. speed n
max
of the power chuck must not be exceeded, even if
the calculated permissible speed n
zul
is higher.
6.3 Inserting Jaws
The jaws of the power chuck are individually inserted and unlocked. Repeat
the following instructions for each jaw.
§
Power chuck cleaned.
§
Guide lubricated with brush.
§
Jaws are intact.
1. Move piston into front position.
2. Insert the safety key into the relevant turning bolt until the pressure point
is reached.
3. To unlock the wedge bar, turn the safety key clockwise to UNLOCK.
Ø The wedge bar moves in.
Ø The wedge bar is unlocked.
EN