KE-750_MS.pdf - 第32页
4. -axis Motor Replacement After replacing θ -axis motor, adjustment of timing belt θ tension is required. Since the θ positioning upon home return is automatically the θ -axis home, no adjustment is necessa ry. Reentry …
3. Z-axis Motor Replacement
After replacing Z-axis motor, Z-axis home positioning must be adjusted and height and laser related MS
data must be reentered. (Refer to section 2 - 13 for reentry.)
Head bracket
Head motor PCB
Z-axis moto
r
SEMS cap
screw
(1)
Ball scre
w
Fig. 2-3-1
(1) Disconnect Z-axis wire bundle from head motor PCB. Loosen screw (1), remove the 4 SEMS caps
(2) and remove Z-axis motor.
(2) When mounting, align Z-axis motor shaft axis with ball screw axis. (Refer to QA Table, Head, Z
motor axis alignment.)
(3) After replacement, adjust Z-axis home positioning and tighten coupling screw (1). (Refer to QA
Table, Head, Z-axis home adjustment.)
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4. -axis Motor Replacement
After replacing θ-axis motor, adjustment of timing belt θ tension is required. Since the θ positioning upon
home return is automatically the θ-axis home, no adjustment is necessary. Reentry of MS parameters is
also not required.
(1) Disconnect θ-axis motor wire bundle from head motor PCB.
(2) Loosen hex nut (1), the 4 SEMS cap screws (2) and hex head bolt (3) to loosen timing belt
tension.
(3) Remove the 4 SEMS cap screws (5) holding θ-axis motor and remove θ-axis motor. (Fig. 2-4-1).
(4) Loosen the 2 stop screws (6) holding motor pulley and remove from θ-axis motor. (Fig. 2 4-2).
θ-axis motor
SEMS cap scre
w
&
washe
r
SEMS cap scre
w
Timing belt θ
Sheeter motor pulle
y
Hex bolt
Hex nut
Fig. 2-4-1
Stop scre
w
(SM8030602TP)
θ -axis motor
θ motor pulley
Fig. 2-4-2
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(5) When assembling θ-axis motor pulley, mount so that the distance from the θ-axis motor flange to the
θ motor pulley extremity is 24mm (Dia. 2 - 4 - 3).
(6) Reassemble in reverse sequence. Adjust timing belt θ tension. (Refer to QA Table, Head, θ belt
tension.)
θ motor pulley
Fig. 2-4-3
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