7
Disassembly and Reassembly of the Speed Reducers
7.3
Disassembly and Reassembly of U-Axis Speed Reducer
7-9
HW1485471
HW1485471
7.3
Disassembly and Reassembly of U-Axis Speed Reducer
• Refer to
fig. 7-3(a) “Disassembly and Reassembly of the U-Axis
.
Disassembly
1. Turn OFF the power supply of the YRC1000.
2. In order to prevent the U-arm unit from falling, support the U-arm unit
by using a chain block, etc., before removing the U-axis motor
.
3. Remove the U-axis motor
, and then remove the input gear
.
(Refer to
chapter 6.3 “Disassembly and Reassembly of U-Axis Motor”
.)
4. Unscrew the hexagon socket head cap screws
, and insert the stud
bolt M12 (length: 40 mm or more) into the tapped hole M12 (2 places)
on the L-arm. Screw the stud bolt into the tapped hole until clearance
of the L-arm is made.
5. Unscrew the hexagon socket head cap screws
, and insert the stud
bolt M12 (length: 35 mm or more) into the tapped hole M12 (2 places)
on the speed reducer
. Screw the stud bolt into the tapped hole
until the clearance is made between the contact surface of the casing
and the speed reducer
.
6. Mount the eyebolts diagonally on the tapped hole M12 (2 places) on
the speed reducer
. Remove the speed reducer
horizontally by
using the eyebolts. At this time, remove the O-ring
.
Reassembly
1. Mount the O-ring
on the speed reducer
, and then mount the
speed reducer
on the U-arm unit.
2. Tighten the hexagon socket head cap screws
with the tightening
torque shown in
table 7-3 “U-Axis Speed Reducer Parts Checklist”
.
When mounting, be careful that the O-ring
does not get caught
between the speed reducer
and the U-arm unit.
3. Apply ThreeBond 1206C to the contact surface of the speed reducer
and the L-arm. For the place to apply sealing bond, refer to
fig. 7-3(b) “Surface to Apply Sealing Bond on the U-Axis Speed
Reducer”
.
4. For the place to apply sealing bond to the L-arm, refer to
“Surface to Apply Sealing Bond Between U-axis Speed Reducer and
L-arm”
.
Mount the speed reducer
and the U-arm unit on the L-arm, and
then tighten the hexagon socket head cap screws
with the
tightening torque shown in
.
5. Mount the U-axis motor
. (Refer to
(When replacing the speed reducer, replace the input gear
, too.)
4
4
6
2
5
1
1
1
1
3
NOTE
For removing/applying of sealing bond and assembling after
applying sealing bond, refer to
Applying, Assembling of Sealing Bond”
.
3
1
1
5
3
1
1
1
2
4
6
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