Precision matthews PM-1440GS, Руководство пользователя

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Copyright © 2020 Quality Machine Tools, LLC PM-1440GS v3 2020-10
Figure 3-8 Installing a Camlock chuck
Figure 3-9 Cam in locked condition
TO REMOVE A CHUCK OR FACEPLATE
Disconnect the 220V supply from the lathe!
Protect the lathe bed, as Figure 3-7. While supporting its
weight, turn each of the cams to 12 o’clock, Figure 3-8, then
remove the chuck. If the chuck does not come free, try tapping
the backplate gently with a soft (dead blow) mallet.
CROSS SLIDE & COMPOUND
The cross slide and compound, Figure 3-10, both have 10 TPI
leadscrews, with 100-division graduated collars, so each divi-
sion represents a “real” motion of 0.001”. On the cross slide
dial, only, this shows as 0.002” per division, meaning that a
0.001” depth of cut reduces the diameter of the workpiece by
0.002”.
2. Turn the spindle by hand, checking that all six cam markers
are at 12 o’clock.
3. While supporting its full weight , install the chuck without
tilting, see Figure 3-8, then gently turn each of the cams
clockwise
— snug, firm, but not locked in this first pass.
Figure 3-7 Protect the lathe bed
4. Check that each of the cam markers lies between 3 and
6 o’clock, between the two Vees stamped on the spindle,
Figure 3-9.
5. If any cam marker is not within the Vees, first be sure that
there is no gap between chuck backplate and spindle
flange. Also, remove the chuck to inspect the studs — burrs
can be a problem, hone if necessary.
If there are no vis-
ible problems, the stud in question may need adjust-
ment as follows:
• Remove the stop screw from the stud.
• If the cam marker in question can’t get to the first Vee (3
o’clock), back the stud OUT one full turn, then replace the
stop screw.
• If the cam marker goes beyond the second Vee (6 o’clock),
screw the stud IN one more turn, then replace the stop
screw.
• If the markers are correctly aligned, repeat the tightening
sequence as step 3, light force. Repeat the sequence two
more times, first with moderate force, then fully tighten.
Figure 3-10 Cross slide and compound dials