KE-750_QA表.pdf - 第56页

MODEL KE-750/760 UNIT X-Y Unit REF. NO. NAME XY-8 FUNCTION X/Y Squareness and Home NAME Position Sensor Position 2/2 QA Table X-axis home position sensor 1) Let the transport mechanism cl amp the square adjusting jig PWB…

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FUNCTION NAME X/Y Squareness and Home Position Sensor Function/Performance CHECK/ADJUSTMENT METHODS (REMEDIAL ACTION PROCEDURE)
Position
ASSURED QUALITY Reliability
QUALITY CHARACTERISTICS (SPECIFICATION VALUES) CATEGORY Safety
Product Image
ROLE IN FUNCTION (MEANING OF SPECIFICATION VALUES)
POSSIBLE MALFUNCTIONS (CAUSED BY INCORRECT SPECIFICATION VALUES)
COMPONENTS
NO. Part No. Part Name Associated Quality Characteristics
1
2
3 MODEL KE-750/760
4 UNIT X-Y Unit REF. NO.
5
NAME
XY-8
6 FUNCTION X/Y Squareness and Home
7
NAME Position Sensor Position 1/2
8
9
10
QA Table
Check procedure:
– X/Y squareness: 0.03/500 mm (square side length)
X/Y squareness
– Y-axis home position sensor activation: The left and eight sensors must be activated at the same time.
– Mount two base bridges at the front and rear on the base frame,
place a square base on it, and then place a square on the base.
– Gap between the home position sensors: 1 +2/0 mm
– Align one side of the square in parallel with the sliding direction
of Y-axis and check the X-axis for squareness with respect to the
other side of the square (by using a dial indicator).
Y-axis home position sensor position
– Turn on the system and, with the servo in free state, remove the
Y belt support from X frame end L/R and check for clearance.
– Move the X-axis frame assembly from the rear to the front and
make sure that the left and right home position sensors are
activated to light up their LEDs at the same time. (For details,
see p. 2/2.)
Adjustment procedure
– Directly affects inaccurate squareness in placement accuracy.
X/Y squareness
- Misaligned left and right sensors cause the X-axis binds during sliding, applying an excessive load on the LM guide and
other mechanism.
– Loosen the screw that secures the X frame end L/R to LM guide
and move the X-axis frame assembly to adjust squareness so
that it is square to 0.03 or less with respect to one side of the
square.
– After the adjustment has been completed, tighten the X-axis
frame assembly set screw to the specified torque (9 Nm).
Y-axis home position sensor position
– To adjust gap, loosen SL4040801SC that secures the sensor to
its bracket and move the sensor up or down as necessary.
– To adjust for simultaneous activation of right and left sensors,
loosen SL6040892TN that secures the bracket and move the
bracket to the right or left as necessary. (For details, see p. 2/2.)
– Degraded placement accuracy
– Noise from LM guide
– Damaged LM guide
– Damaged home position sensor
MODEL KE-750/760
UNIT X-Y Unit REF. NO.
NAME
XY-8
FUNCTION X/Y Squareness and Home
NAME Position Sensor Position 2/2
QA Table
X-axis home position sensor
1) Let the transport mechanism clamp the square adjusting jig PWB.
X-MSC bracket
X home position senso
r
Magnetic switch
magnet
(furnished screw)
E94907250A0
X home position sensor
X frame end L
2) Perform home return motion only of YL motor.
3) Through teaching operation, set one side of the jig so that it runs parallel with Y-axis and check that the X-direction motion
is 0.01 or less on both ends of the jig.
4) 0.01 or more:
With the servo in free state, loosen the screw that secures X frame end L/R to LM guide and move X frame end L/R as
necessary to make the squareness below 0.03. When the value is attained, tighten the screw.
Next, move the head plate in X-direction to check that it is square to 0.01 or less with respect to the jig. Then, go back to
step 2).
4') Less than 0.01:
Go to step 5).
5) Perform home return operation again only of the YL motor.
6) Through teaching operation, move X-axis from the rear end of Y to the front. Move the sensor bracket as necessary so
that the right home position sensor is activated at the same time when the left one is activated.
Check procedure:
Move the head plate from the right-hand side of X-axis towards left and check that the clearance between the magnetic
switch magnet mounted on the X-MSC bracket and the X home position sensor measures 1 +2/0 mm.
7) Through teaching, check again that the left and right home position sensors are activated at the same time. (The
difference between right and left should be 1 pulse or less.)
Adjustment procedure:
Loosen the furnished screw that secures the home position sensor and adjust to obtain the clearance of 1 +2/0 mm from
the magnetic switch magnet.
8) Perform the normal home return operation. Then, check that the X-direction movement is square to 0.03 or less on both
ends of the jig PWB placed in parallel with the Y-axis.
FUNCTION NAME Limit Sensor Position Function/Performance CHECK/ADJUSTMENT METHODS (REMEDIAL ACTION PROCEDURE)
ASSURED QUALITY Reliability
QUALITY CHARACTERISTICS (SPECIFICATION VALUES) CATEGORY Safety
Product Image
ROLE IN FUNCTION (MEANING OF SPECIFICATION VALUES)
POSSIBLE MALFUNCTIONS (CAUSED BY INCORRECT SPECIFICATION VALUES)
COMPONENTS
NO. Part No. Part Name Associated Quality Characteristics
1
2
3 MODEL KE-750/760
4 UNIT X-Y Unit REF. NO.
5
NAME
XY-9
6 FUNCTION Limit Sensor Position
7
NAME
8
9
10
QA Table
- X-axis limit sensor
X-axis limit
- Loosen the screw that secures the X-LMT bracket and move it as necessary so that the distance between the stopper
rubber mounting surface of X frame end L/R and the center of sensor measures 66/85 mm.
– Distance between the stopper rubber mounting surface of X frame end L and the center of sensor: 66 mm
– Distance between the stopper rubber mounting surface of X frame end R and the center of sensor: 85 mm
- For the crosswise direction, adjust so that the clearance between the X-MSC bracket mounted on the head plate and
the sensor surface measures 1 mm (when a spacer is used).
– Clearance between the X-MSC bracket and limit sensor surface: 1 mm
Y-axis limit
– Front: Distance between the LM guide rail front end face and the center of sensor: 120 mm
X frame end L
E2435725000
X-LMT bracket
SL603892TN
Tightening torque 1 Nm
E2435725000
X-LMT bracket
SL603892TN
Tightening torque 1 Nm
X frame end R
– Rear: Distance between the LM guide rail rear end face and the center of sensor: 213 mm
– Center (feeder detection): Distance between the LM guide rail rear end face and the center of sensor: 319 mm
– Clearance between the Y-ORG bracket and limit sensor surface: 1 mm
– Y-axis limit sensor
- Loosen the screw that secures the Y-LMT bracket and adjust so that the center of the sensor is located at:
120 mm from the LM guide front end face,
213 mm and 319 mm from the LM guide rear end face.
- Loosen the mounting screw of the Y-ORG bracket mounted on X frame end L and adjust so that the clearance between
the sensor surface and Y-ORG bracket becomes 1 mm (as using a spacer). Note that the Y-ORG bracket is fairly
long: check parallelism with Y-axis and ensure that the clearance from the limit sensor is uniform at any point.
E2324725000
Y-LMT bracket
LM guide rail