11
PM-1030V v5 2020-10
Copyright © 2020 Quality Machine Tools, LLC
Knurled shutter ring
Shutter ring open
Turned counter-clockwise
Shutter ring closed
Turned clockwise
Figure 3-7
Chuck attachment to spindle nose
Chuck and faceplate nuts clamp onto a shutter ring behind the spindle
nose. When turned counter-clockwise (viewed from the tailstock) the
shutter opens fully, allowing the chuck to be removed complete with
clamp nuts, arrowed. When turned clockwise the shutter ring becomes
a clamping surface, slots instead of holes.
Note the '0' markings
for
best alignment on the chuck, backing plate and spindle nose.
Figure 3-8
Mounting studs on
chuck & faceplate
Check the studs for
tightness before re-in-
stalling on the lathe!
CROSS SLIDE & COMPOUND
The cross slide and compound, Figure 3-10, both have 10 TPI
leadscrews, with 100-division graduated collars. Each division
represents a true 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”.
The compound can be rotated through 360 degrees. It rests
on a turntable casting with a ± 60 degree graduated scale,
Figure 3-11. The compound is secured to the cross-slide by a
clamp ring and two M8 T-screws with lock nuts, Figures 3-12
and 3-13.
SADDLE
For manual turning operations the saddle is traversed left to
right along the bed by a handwheel, Figure 3-9.The saddle
may be locked in place by an M8 socket head cap screw ad-
jacent to the cross-slide, Figure 3-13. Because the saddle is
frequently locked to prevent movement in facing operations,
some users replace the standard screw with a ratcheting lever
screw that can be turned quickly without tools.
Figure 3-10
Cross-slide and compound dials
Both collars are friction-coupled to their leadscrews by leaf
springs. To zero a dial, or set it to any desired number, hold
the handwheel firmly, then rotate the knurled rim.
Figure 3-9
Saddle handwheel
Figure 3-11
Compound turntable