Hardinge SUPER-PRECISION HC - Page 16

TOOL POST SLIDE
GIB ADJUSTMENT
After considerable use it may be necessary to ad-
just the tool post slide gib. The gib is the tapered
type and adjustment is made from the large end
shown in Figure 45.
1. Follow steps 2 and 16 under "Chasing Head
Disassembly ", Page 8.
2. Insert ¼" hexagon wrench in adjusting screw
"A", Figure 45 and Figure 46 . Loosen one full turn .
3. Push wrench on through into adjusting screw
"B" ', Figure 46 . Advance adjusting screw "B" a frac-
tion of a turn .
4. Pull wrench out of "B" and tighten " A" until
snug . Do not overtighten .
5. Test tool slide for " feel " -the slide should
have a slight drag but should not bind .
NOTE: Excessive gib pressure or drag does not
improve performance.
LUBRICATION
LUBRICATE LEAD SCREW AND FOLLOWER with
Die Makers Grease . Clean lead screw and follower
daily during a production run and relubricate.
OIL CUP " B ", Fi gure 45, ON SIDE OF CHASING
HEAD should be filled weekly wi th Mobil Velocite No .
6 for lubrication of slide stop pin and cam.
For proper lubrication , AUTOMATIC THREADING
UNIT SHOULD BE CYCLED AT LEAST ONCE A
WEEK when not in regular use.
KNOCKOUT ARM GUIDE BAR " C", Figure 47, is a
solid carbide strip . To insure proper operation of
arm, it should be kept lubricated with Die Makers
Grease. Clean guide bar daily and re-lubricate.
NOTE: Oil base cutting fluids are recommended for
maximum life of automatic threading attachment.
THREADING UNIT
SERIAL NUMBER
. The serial number for the automatic threading unit
1s located on the underside of the attachment on the
dovetail of the main casting, Fi gure 45. This serial
number should be included in all correspondence
regarding this unit.
CHASING KNOCKOUT
CONTROL DISASSEMBLY
1. Disconnect air line at control unit and turn dis-
connect switch on main control case to " Off ".
2. Loosen cable grips "A" and "B", Figure 48.
3. Remove air line connector "C". Push electric
cables into housing to allow slack for valve housing
removal.
14
4. Remove four screws "D" , Fi gure 49, and
remove valve housing over two dowel pins "E".
5. Remove screw "F", Figure 50, and white wire .
Remove black wire from "common" terminal on
micro switch "G".
6. Remove wire from terminal screw " J" and
remove wire from " normally open" terminal on micro
switch "G ".
7. If necessary, remove two O- rings " K" .
8. To remove air valve " L ":
(a) Remove red wire from terminal " M", Fig-
ure 51 .
(b) Remove three rema i ning screws " F", F ig-
ure 50 , and remove air valve.
(c) Remove coupling " N", felt "O", washer
" P", spring " Q " and nipple "R" .
(d) Remove exhaust si lencer " S ", coupling
"T", nipple " U" and elbow " V ".
9. To remove micro switches:
(a) Remove remaining wires from micro
switches .
(b) Remove two screws, nuts and washers " W ",
Figu re 52, and remove micro switches ·• G"
and "H", Figure 50.
ADJUSTING SCREW "B"
ADJUSTING SCREW "A"
TA PERED GIB - L ARGE END
! " HEXAGON WRENCH
Fi gure 46 - Taper Gib Adjustm ent
Figure 47 - Knockout Guide B ar