Design: Components and Function
2
2.1.2.DRIVE MECHANISM
The drive mechanism (Figure 2-2) is a support structure inside the dropping
chamber on which the cart/drag-free chamber travels up and down, driven
by a DC servo motor.
2.1.3.SERVICE RING
The
Service Ring
(Figure 2-6 and Figure 2-7) is the base of the Dropping
Chamber. It provides connection and mounting for the following:
•
A bellows-type
vacuum valve
for the initial evacuation of the vacuum
system
•
A
Ferrofluidic rotary vacuum feedthrough
which connects the motor
shaft to the cart drive mechanism
•
A
servo motor/rotary shaft encoder
assembly which moves the cart
and senses its position
•
An
electrical vacuum feedthrough
which allows connection of the test
mass tracking electronics to the controller
•
An
ion pump
, mounted on a 2¾” Conflat flange, which maintains the
vacuum once the chamber has been evacuated by the roughing pump
•
Spare
2¾” Conflat and Mini-Conflat flanges
are blanked off, and can
be used for additional vacuum accessories
2-6
Figure 2-6
. Side view of the service ring.
Summary of Contents for FG5
Page 22: ...Design Components and Function 2 Figure 2 10 The Superspring 2 14 ...
Page 31: ...Design Components and Function 2 Figure 2 13 Rotation Monitor 2 23 ...
Page 32: ......
Page 42: ...How to Set Up and Run the FG5 3 3 10 ...
Page 44: ...How to Set Up and Run the FG5 3 Figure 3 2 V Post 3 12 ...
Page 53: ...How to Set Up and Run the FG5 3 1 Backup the data 2 Shut off computer power 3 21 ...
Page 87: ...Adjustment and Maintenance 4 4 29 ...
Page 91: ...Adjustment and Maintenance 4 4 33 ...
Page 104: ...Troubleshooting 5 5 2 ...
Page 117: ...Troubleshooting 5 5 15 ...
Page 131: ...Checklists and Logs Appendix D 9 3 ...
Page 140: ...Checklists and Logs Appendix D Table 9 6 Replacing Drive Belt 9 12 ...
Page 145: ...Checklists and Logs Appendix D Table 9 10 Replace Linear Bearings 9 17 ...
Page 149: ...Checklists and Logs Appendix D Table 9 13 Replace Shaft Encoder 9 21 ...
