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13. Machine zero point setting
For the NC rotary table with the additional axis but without our controller and the dog type zero point
return specification, it is necessary to set the machine zero point to the machine as the machining
reference point of the rotary table.
When setting the machine zero point, move the NC rotary table to the position where the machine zero
point will be set. Then set the position as the machine zero point using the CNC parameters.
For the machine zero point setting procedure using the parameters, refer to our Controller Instruction
Manual (in the section of zero point setting procedure) or the instruction manual for the machine on
which the rotary table is installed.
Basically, machine zero point should be set at the installation of the NC
rotary table. So it does not need to be set under normal conditions of use.
However, it must be reset in the following cases.
◇
When the encoder cable of the rotary table is removed from the machine or controller.
◇
When the encoder backup battery on the machine side or controller runs down.
◇
When the servo motor, encoder, or encoder cable is replaced or repaired.
13-1. Dog type zero point return device (OPTION)
(OPTION)
The contents of this section is applicable to the NC rotary table with the
dog type zero point return specification.
13-1-1. Rotating axis ZRN (Zero Return) device (See Fig.12-1)
The dog for ZRN deceleration is mounted inside of table and it can be mounted on the circumferential
position (angle).
When a zero position is changed or return rotation direction is changed to the other direction, since it is
necessary to change the dog position, the following procedure is recommended for adjustment.
1) Drain lubrication oil from the tilting axis lubrication oil drain port (See outside view).
2) Remove covers
①
and
④
.
3) When the cover
①
is removed, since a dog adjusting hole is found, rotate the table with the manual
pulse generator or Manual axis feed key to the place where the dog can be found.
4) Loosen set screws
③
which fix the dog
②
.
5) Move the dog
②
to the proper position.
6) After adjusting the dog position, tighten set screws
③
securely.
When mounting the cover again after adjusting the dog position, take
care so that O-ring is not damaged.
CAUTION
NOTICE
NOTICE
