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PM-1030V v5 2020-10
Copyright © 2020 Quality Machine Tools, LLC
USING CUTTING TOOLS
In most turning operations the
cutting tool is firmly mounted
on the compound, and is moved relative to the workpiece by
a combination of saddle, cross-slide and compound motions.
The AXA (100-Series) QCTP (Quick-change toolpost) typically
used with the PM-1030V is shown in Figure 3-14. It can be
used with any number of interchangeable toolholders, most of
which are intended for square-section tool shanks up to 1/2".
A key feature of the QCTP is its
repeatability
, meaning that a
toolholder can be removed, then later re-installed, without fur-
ther attention. This is because each toolholder has its own mi-
crometer-style height adjustment — set it once and forget it —
a great time-saver compared with other tool-holding systems.
Like other toolholding systems, the QCTP can be freely rotated
about its vertical axis, then locked in position. This can be used
to change the side cutting edge angle of (say) a knife tool, con-
verting it quickly from diameter turning to face cutting.
Figure 3-12
Compound at zero degrees
Compound clamp ring (1); Compound lock screw (2)
Figure 3-13
Saddle & cross-slide lock screws
Saddle lock screw (1); Cross-slide lock screw (2). Hex nut (3) is one
of two locknuts securing the compound clamp ring.
Figure 3-14
QCTP with toolholder
This style of toolholder is used for rectangular-shank tools up to 1/2"
x 1/2". Its height is set by the thumb nut resting on the top surface of
the toolpost. The wave washer and hex locknut prevent accidental
rotation of the thumb nut. To rotate the QCTP, loosen the center post.
Offset
screw
Figure 3-15
Tailstock
The safety screw prevents accidental dropping of the tailstock
TAILSTOCK
The tailstock leadscrew has a 10 TPI thread, with 3 inch travel.
A graduated collar on the tailstock handwheel reads 0.001”
per division. To remove tooling from the tailstock taper (MT2)
turn the handwheel counter-clockwise (handle end view) until
resistance is felt, then turn the handle a little more to eject the
tool. Conversely, to install a taper tool make certain that the
quill is out far enough to allow firm seating.
Clamp screw
Quill clamp
lever
Safety screw
Tailstock
clamp lever
The cross-slide and compound each have a clamp screw that
presses the gib against its mating dovetail. Clamping provided
by these screws is just that, more of a stiffening action than a
rigid lock. Note that the other socket head cap screws (with
lock nuts) on the cross-slide and compound are for a different
purpose — they adjust gib pressure on the dovetails for the
best compromise of slideability and rigidity.
Be sure to release clamp screws before moving com-
pound, cross-slide or saddle, especially under power
Wave
washer
Toolpost
Thumb
nut
Lock
handle
Center
post
Tool
holder
Locknut