Okuma OSP 5000, Электротехническое обслуживание, Учебное пособие

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Okuma America Corporation
CONSTR CONSTR
CONSTR CONSTR
CONSTRUCTION UCTION
UCTION UCTION
UCTION
Rev. 8-21-01
Removing the encoder from the motor shaft.
The encoder input shaft and the motor shaft are joined by an M5 hexagon socket head
bolt. There is a hole in the center of the encoder’s printed circuit board. The encoder can
be removed from the motor shaft by inserting the long side of an M5 Allen wrench
through this hole, inserting it into the head of the hexagon bolt. Insert a pipe into the
short side of the wrench (or use a T handle wrench)and loosen the bolt. It might be
necessary to secure the motor shaft so that it does not rotate while this bolt is being
loosened. If there is a pulley attached to the motor shaft, for example, holding the pulley
by hand will be sufficient to secure the motor shaft. When the pulley cannot be held by
hand, take into consideration placing a prop between slide table and body.
This completes the procedure for removing the Absolute Position Encoder.
Installing the encoder to the motor (Basically, install the encoder in the reverse order of re-
moval.)
Installing the encoder to the motor shaft.
Prepare and confirm the following items before installing the encoder to the motor shaft.
•
Check for damage or rust on the taper.
•
Check for dirt or foreign substances.
•
Check for deformation of motor shaft positioning key slot.
When installing the encoder to the motor shaft, adjust the positional relationship of the encoder
to the motor on the two following items.
•
Align the motor shaft adjusting key slot and the encoder input shaft adjusting pin.
•
Align the diaphragm phase adjusting pin of encoder and the adjusting pin hole made in the
motor flange. (The adjusting pin hole made in the motor flange is placed at the bottom right
viewed from the encoder installing side.
Adjust the positional relationship of the motor shaft and encoder input shaft and lightly tighten
the encoder input shaft M5 bolt with the allen wrench through the center of encoder’s printed
circuit board. At this time, while the bolt is still loose, align the diaphragm phase adjusting pin
of the encoder with the adjusting pin hole made in the motor flange. If the input shaft is tight-
ened in the condition that the pin and hole are not aligned correctly, it will cause the diaphragm
to be distorted, so that the encoder cannot be installed properly. Therefore, care should be taken
to align the pin and hole. Remount the four special long head bolts to attach the encoder dia-
phragm to the chassis of the motor.
Finally tighten the input shaft to 60kg/cm(854inch pounds).