卧式standard头部.pdf - 第63页
Page 61 V/S Standard Insertion Head Assembly T50090901 Rev . F This Document Supports Assembly 50090901 Rev. D 19. Install the collar clamp on the lead screw and hand tighten the collar clamp. Secure the collar clamp to …
Page 60
T50090901 Rev. F V/S Standard Insertion Head Assembly
This Document Supports Assembly 50090901 Rev. D
13. Thread the left-hand and right-hand flanged bushings towards each
other until each is an equal distance from the center hole in the lead
screw shaft. Note the orientation of the bushings for proper installation
into the tooling housings. While maintaining the bushing orientation,
thread the bushings apart until the left side bushing end reaches the
end of the lead screw shaft.
Equal threads
visible on each
flanged bushing.
Lead Screw
Flanged Bushings
Socket Head
Cap Screw
Zero Span Stop
Lead Screw
14. Using Loctite 222 on the threads of two 4-40 x 1/2 socket head cap
screws, secure the zero span stop to the lead screw using the cap screws.
Ensure that the zero span stop floats freely on the lead screw.
NOTE
The lead screw and bushings are coated with TFE and do not require
lubrication.
Do not grease the lead screw and bushings.
15. Place the retaining ring on the lead screw.
Ball Bearing
Retaining
Ring
Socket Button
Head Screw
Coupling
Collar
Clamp
Lead Screw
16. Using loctite 222 on the threads of 4 6-32 x 3/8 socket button head
screws, finger tighten the flanged bushings to the tooling housings.
17. Install the lead screw through the casting right side wall.
18. Using Loctite 222 on the threads of the three 8-32 x 3/8 socket button
head screws, install the ball bearing into the housing using the button
head screws.
Page 61
V/S Standard Insertion Head Assembly T50090901 Rev. F
This Document Supports Assembly 50090901 Rev. D
19. Install the collar clamp on the lead screw and hand tighten the collar
clamp. Secure the collar clamp to the lead screw.
20. Install the coupling on the right end of the lead screw. Secure the cou-
pling to the lead screw with the set screw.
21. Partially slide the upper shaft into the housing. Insert the tooling
housings in position then slide the upper shaft through the ball bush-
ings in the tooling housings. Ensure that the flats of the shaft are fac-
ing front and line up with the set screws used to secure them in place.
Using Loctite 222 on the threads of the two 10-24 x 3/8 set screws, se-
cure the upper shaft to the housing.
22. Install the lower shaft through the tooling housing and the ball bush-
ings in the tooling housings. Ensure that the flats of the shaft are fac-
ing down and line up with the set screws used to secure them in place.
Using Loctite 222 on the threads of the two 10-24 x 3/8 set screws, se-
cure the lower shaft to the housing.
23. Rotate the lead screw in both directions to float the bushings , then
fully tighten the button head screws.
Upper Shaft
Lower Shaft
Set Screw
Set Screw
24. Exercise the pulley assembly by rotating it fully clockwise and coun-
terclockwise. The left and right housings should move from one ex-
treme to the other without restriction. If any restrictions occur go back
to step 1 and review the procedure.
25. Using Loctite 222 on the threads of the 5/16-18 x 5/8 socket button
head screw, install two radial bearings and a thrust washer on the ten-
sion arm assembly.
26. Using Loctite 242 on the threads of the 1/2 x 1/2 shoulder screw, se-
cure the torsion spring and tension arm assembly to the housing using
the shoulder screw.
Page 62
T50090901 Rev. F V/S Standard Insertion Head Assembly
This Document Supports Assembly 50090901 Rev. D
27. Install the 5/16-18 x 1 1/2 socket head cap screw through the housing
and into the tension arm. Do not tighten now, this will be used for later
adjustment.
Socket Button
Head Screw
Socket Head
Cap Screw
Thrust Washer
Radial Bearings
Shoulder Screw
T
ension
Spring
Tension Arm
28. Using Loctite 222 on the threads of four 8-32 x 1/4 socket button head
screws, install a radial bearing in each chain clip guide and secure the
bearings in the guides using the button head screws.
29. Slide the two lower shafts into the housing so the keyways are facing
forward. Apply a light coat of Kendall Blue Grease on the thrust bear-
ings then, on each lower shaft, install a spacer, thrust washer, thrust
bearing, thrust washer, key, sprocket, retaining ring, chain clip guide
assembly and another retaining ring.
30. Using Loctite 222 on the threads of two 1/4-20 x 5/16 set screws, se-
cure the lower sprockets to the lower shafts using the set screws.