KE-750_QA表.pdf - 第50页

FUNCTION NAME X-Axis Motion Load Func tion/Performance CHECK/ADJUSTMENT METHODS (REMEDIAL ACTION PROCEDURE) ASSURED QUALITY Reliability QUALITY CHARACTERISTI CS (SPECIFIC ATION VALUES) CATEGORY Safety Product Image ROLE …

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FUNCTION NAME X-Axis Frame Straightness 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 E2402725000 X-axis frame
2 E2403725000 LM guide X
3 E2404725000 Back plate MODEL KE-750/760
4 E2406725000 X frame end L UNIT X-Y Unit REF. NO.
5 E2406725000 X frame end R
NAME
XY-2
6 FUNCTION X-Axis Frame Straightness
7
NAME
8
9
10
QA Table
– Crosswise direction
– Head plate straightness in the crosswise direction: Within 20 um
– Head plate straightness in Z-direction: Within 14 um
Š
Z-direction
Head plate
(for jig)
I-shaped straightedge
X frame end R
X frame
end L
678 (stroke length)(from rail
end face)
Straightness in the crosswise direction affects placement accuracy (especially in Y-direction).
Straightness in Z-direction results in variations in height at pickup-and-placement.
Crosswise direction
Starting with a point 27 mm from the rail left end face, install a dial indicator to the head plate for jig (at around the
center of the head plate) and take a reading over a stroke of 678 mm. Report a substituted parallelism 0.02 with
respect to I-shaped straightedge.
Z-direction
– Degraded placement accuracy
Report a substituted parallelism of 0.014 over a stroke of 678 mm with respect to the I-shaped straightedge which has
been set to parallelism within 0.03 with reference to the surface of X frame end L/R on which the LM guide is
mounted.
– Pickup failure causing a chip to stand upright.
Adjustment procedure
– No adjustment can be made for the crosswise direction. For this, check X-axis frame, LM guide X, and back plate for
accuracy.
– For straightness in Z-direction, loosen four screws each that secure the X-axis frame to the X frame end L/R and adjust tilt
of the entire X-axis. If good straightness is not obtained even after this procedure, check LM guide X for installation and
straightness as a single unit.
FUNCTION NAME X-Axis Motion Load 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 E2402725000 X-axis frame
2 E2403725000 LM guide X
3 MODEL KE-750/760
4 UNIT X-Y Unit REF. NO.
5
NAME
XY-3
6 FUNCTION X-Axis Motion Load
7
NAME
8
9
10
QA Table
Head plate
P
678 (stroke range)
27 (from rail
end face)
– When head plate starts moving: 20 N or less
Variations in force during motion: 5 N or less
- No play, unusual noise, or oscillation are allowed while the LM block is moving.
– Using a spring balance, push the slide unit (jig plate) in P-direction and check at that time that the slide unit starts moving
with a force of 20 N or less. Variations in force after the unit has started moving should be 5 N or less over a stroke of
less than 678 mm.
– Holding the slide unit (jig plate) by hand, slide it over a stroke of less than 678 mm and make sure that the LM guide does
not generates noise or vibration (chattering).
– Concerned with the noise during machine operation
– Concerned with gain adjustment and settling time of motor
Remedial procedures
1. Loosen the screws that secure the jig plate and slide it to determine if the block has been pinched into position.
2. Check the two LM guides for parallelism and straightness.
3. If steps and 1 and 2 have been checked okay, the LM guide plate (ball itself, rolling contact surface) may be defective,
requiring replacement of the guide.
– Noise during operation:
Noise from the LM guide
Noise produced by motor oscillation
– Worn LM guide
– Degraded placement accuracy
FUNCTION NAME Parallelism in Y-Axis Frame L/R and LM Guide (Y) 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 E2301725000 Y-axis frame L
2 E2302725000 Y-axis frame R
3 E2303725000 LM guide (Y) MODEL KE-750/760
4 UNIT X-Y Unit REF. NO.
5
NAME
XY-4
6 FUNCTION Parallelism in Y-Axis Frame L/R
7
NAME and LM Guide (Y)
8
9
10
QA Table
Parallelism between Y-axis frame L and R
Parallelism between Y-axis frame L and R:
The distance between the surfaces of Y-axis frame L and R to which magnescales are mounted is 1041 at their front end
and rear end.
[Check procedure]
(1) Using a scale, check that each of the dimensions
shown on the left measures 1041.
Parallelism between Y-axis frame and LM guide (Y):
The position of the Y-axis frame is basically
determined by the two each spring pins driven into
the base frame. If the specified dimension is not
obtained even though the Y-axis is pressed against
the spring pins, check the spring pin holes in the
base frame and the dimension between the Y-axis
surface which is pressed against the spring pins and
the magnescale mounting surface.
The distance between the Y-axis frame part to which magnescale is mounted and the end face of LM guide (Y) is 12.5.
[Adjustment procedure]
Loosen the set screws on the Y-axis frame and
adjust the position of the Y-axis frame.
Concerned with the level of accuracy maintained through Y-axis parallelism adjustment that greatly affects placement
accuracy.
Parallelism between the Y-axis frame and LM guide (Y)
[Check procedure]
Using vernier calipers, check that the dimension
between the surface of Y-axis frame L and R on
which magnescales are mounted and the LM guide
rail side face measures 12.5.
[Adjustment procedure]
Loosen the LM guide fixing screw and, pressing the
LM guide up against vernier calipers which has been
adjusted to 12.5 mm, tighten the fixing screw.
1. It becomes impossible to make a good adjustment of parallelism between the left and right LM guides of Y-axis.
2. When the X-axis frame assembly is mounted, the holes used for mounting the LM guide (Y) block are misaligned with
each other. If it is forcibly secured, the guide is loaded resulting in a noise or other abnormal symptom.