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Page 40 TECHNICAL PUBLICATIONS T46230812 Rev . D DH Positioning System Assembly , P/T This Document Supports Assembly 46230812 5. Tighten the hex head screws to secure the slow down sensor bracket in position. 6. Adjust …
Page 39
TECHNICAL PUBLICATIONS
DH Positioning System Assembly, P/T T46230812 Rev. D
This Document Supports Assembly 46230812
Y Axis Positive Limit
1. In the Table Y Axis section, click on the value (18.125) in the entry
field then select Go To.
2. The Y axis will move at a set speed to the positive axis position.
3. Depending on the limit actuator position, one of the following occurs.
a. The limit actuator fails to contact the limit switch. In this case,
move the limit switch actuator until the positive limit just
actuates, then secure the actuator. Zero the axis and select Go
To again to verify the correct limit position.
b. A negative hard limit occurs, the Hard Limit indicator is
displayed. In this case, move the actuator block slightly away
from the limit switch then repeat steps 1 through 3.
4. The value in the display field, at the end of this procedure, should be
between 18.105 and 18.145.
End of procedure.
Rotary Disk Slow Down Adjustments
Purpose:
This adjustment ensures that the rotary disk decelerates before contacting the
lock assembly and fully engages the lock assembly without excessive force.
The rotary disk slow down switch assembly is actuated by the stop blocks on
the rotary disk. When a stop block contacts the ball actuator on the slow
down assembly, air flow to the drive assembly is reduced slowing the speed
of the rotary tables.
Correct rotary disk slow down assembly adjustment increases reliability and
longevity of the lock assembly.
Adjustment Procedure:
1. Loosen the screws securing the slow down sensor mounting bracket.
2. Adjust the slow down assembly sensor mounting bracket as far away
from the lock assembly as possible. Ensure the ball actuator is in line
with a stop block.
3. Adjust the ball actuator so the stop blocks on the rotary table fully
actuate the ball but do not deflect the slow down assembly or the
mounting bracket.
4. Manually rotate the rotary table so the stop blocks actuate the slow
down sensor, while adjusting the front/back position of the sensor.
Page 40
TECHNICAL PUBLICATIONS
T46230812 Rev. D DH Positioning System Assembly, P/T
This Document Supports Assembly 46230812
5. Tighten the hex head screws to secure the slow down sensor bracket in
position.
6. Adjust the slow down needle valve clockwise until it is closed.
7. Adjust the drive motor flow control valve counterclockwise until it is
open.
8. Create a dummy rotary disk drive pattern, refer to the IM-UPS
Reference Manual. The pattern must include four index steps with 9.0
x 9.0 inch (2286,0 x 2286,0 mm) X and Y values, a bypassed insertion
step and a bypassed park step.
9. Load and activate the rotary disk drive pattern.
10. In the IM-UPS Machine Status window, select the following. Display
Status>Operation Status
The Operations Mode screen is displayed.
11. In the Head On box, deselect the Head 1 and Head 2 check boxes..
12. Push the START push button to zero the machine.
13. Push the START push button again to activate the rotary tables.
14. As the rotary table indexes, slowly turn the needle valve (NV1 or
NV1A) to achieve a condition in which the rotary disk stop block
firmly enters the lock assembly without causing a banging sound.
15. Push the STOP push button to stop the rotary table indexing.
16. Loosen the lock screw on the air flow control valve on the drive
assembly.
17. Adjust the air flow control valve fully clockwise and then two full turns
counterclockwise.
18. As the disk rotates, adjust the flow control valve so the disk movement
is quick but the stop blocks do not strike the lock assembly with
excessive force. The rotary disc should rotate ninety degrees in
approximately one second with both discs set at the same speed.
It may be necessary to adjust the pneumatic slow down needle valve to
achieve this adjustment.
19. Tighten the lock screw on the flow control valve to secure the valve in
position.
20. Push the STOP push button.
End of procedure.
Page 41
TECHNICAL PUBLICATIONS
DH Positioning System Assembly, P/T T46230812 Rev. D
This Document Supports Assembly 46230812
Advanced Support Information
The following corrective maintenance procedures are intended for
Universal Instruments Corporation Field Service Engineers only.
Unauthorized implementation of these procedures may result in damage
to the machine and may adversely affect your warranty status if
performed by other than UIC personnel.
The advanced support information procedures are those identified on the
maintenance concept table as requiring a minimum skill level of UIC Field
Service Engineer. All such procedures may or may not be present in this
document at this time.
Rotary Table Assembly Disassembly/Assembly
1. Remove the 6 - 32 x 3/16 button head screws and washers securing the
tooling pin arms and remove the tooling pin arms.
2. If necessary, remove the 5 - 40 x 1/4 cap screws securing the tooling
pins and remove the tooling pins.
3. Remove the 6 - 32 x 3/8 button head screws securing the tooling pin
housings to the tooling plate and remove the tooling pin housings.
4. Remove the five 6 - 32 x 3/8 cap screws securing the tooling plate to
the shaft and remove the tooling plate.
5. Remove the four 10 - 32 x 7/8 cap screws securing the shaft assembly
to the rotary table.
6. Remove the retaining ring, collar clamp and shaft spacer from the ends
of the shaft.
7. Remove the bearings, bearing blocks and torsion springs from the
shaft.
8. Remove the two 10 - 32 x 1/4 button head screws that secure the front
board support/guide assembly to the mounting blocks and remove the
front board support/guide assembly.
9. Remove the seven 6 - 32 x 3/16 button head screws that connect the
front board guide and the front board support.
10. Remove the two 8 - 32 x 5/8 cap screws that mount the rear board
support/guide assembly, rear support blocks and tee nuts to the rotary
table.
11. Remove the four 6 - 32 x 1/4 cap screws that secure the rear board
support/guide assembly to the rear support blocks and remove the rear
support blocks.