Rocker &
Quick Change
Tool Posts,
Boring Bar Holders, Locking Levers
Last updated on
Saturday, September 03, 2011 08:37:38 AM
Eastern US Time Zone
Rocker Tool Post,
Handle Upgrades, Tool Posts,
Cut-off Tool Post,
Tool Bit Height Gage
Quick Change Tool Post,
QCTP Tool Bit Holders,
Boring Bar Holder,
Boring Bar Sets, Eccentric Tool Holder
Rocker Tool Post
Rocker allows adjustment of the
tool bit height. Uses a machined,
1½" diameter, steel rocker.
Three rockers were cut from one turning. Milled
post using a
rotary table. Adjust
tip height to
1¼" or just below.
The zinc die-cast levers can be found at
MSCDirect using the keywords
"adjustable levers."
Exploded view of a rocker-style tool post made from a standard tool post.
See small manual rotary table.
Taig OEM tool post with fabricated steel bushing & ratchet-type Zinc alloy handle.
Note
recessed area around the bolt for good clamping forces. Steel T-nuts are better.
Tool Bit Height Gage
A brass tool bit
height gage to quickly set the tip at or just below
center (1¼").
Can be used for setting boring bar & cut-off tool heights, too.
Added 10-32 threaded ratchet levers (MSC)
to all tool posts. Made SS spacers that sit inside
the counter-bored hole.
Used a brass washer & a length of 10-32 threaded rod. Did not chamfer
bottom of the rod; ground flat.
Then, permanently attached the
square nut on the flat rod end to
eliminate turning.
Tightening now occurs only at the lever thread which is about 0.4" deep.
Tool Posts
Top row: rocker & standard posts.
Bottom row: backside tool post, backside cut-off tool & boring bar holder.
Cut-off Tool Post
Cut-off tool blade is used upside-down at the
backside. The tool works well & blade is easily re-sharpened.
Uses a standard 1/16" x ½" x
4" cut-off blade. Superior to the ¼" x ¼"
shank cut-off tool bit.
All-steel construction.
Standard tool post modified to hold an
8mm indicator holder rod.
Quick Change Tool Post (QCTP)
A2ZCNC
quick-change tool post. Nicely finished, hard-anodized aluminum, CNC fabricated
& quality hardware.
Low price, quick-changes, pre-adjusted tool heights, very rigid design, ½"
cut-off blade, holders for up to
3/8" square tool bits & 3/8" diameter boring bars.
Tool bit can be held to the left of the cross slide allowing
work on certain short/large
diameter shapes.
Relatively large size uses up space on an otherwise small
machine.
Replaced the original steel jam (locking) nuts with brass thumb nuts & added a
brass washer.
Used molybdenum disulphide to
lightly lube the entire mechanism.
Added a threaded ratchet
lever to eliminate the need for a hex driver.
Used a ¼-20 threaded rod & a brass
washer.
Punched the bottom of the base thread
so the rod does not pass all the way
through & damage the aluminum cross-slide.
Boring Bar Holder
A simple ⅜" boring bar holder for the
lathe.
Boring Bar Sets
⅜"
shank, brazed carbide insert
& Cobalt-steel boring bar
sets with
a fixed-position, boring-bar holder.
This holder uses two tie-down bolts.
Eccentric Tool
Holder
This type of boring
bar holder uses a
⅜"
precision
reamed, split brass eccentric that allows adjustment
of
both the boring bar height & rake angle. When performing
the
slitting operation, use low RPM & cutting fluid.
On top center, a screw fits into a groove to retain the
brass eccentric.
Note the small ridge (right side) that bears against the
holder body & the center retaining groove.
Front view. 10-32 cap-head
bolts clamp the eccentric. The A2ZCNC T-nut is on
a 10-32 threaded rod & tightened/loosened by a
zinc ratcheting handle.
Bottom view. The area around
the hold-down bolt was relieved
to insure good clamping contact
for the entire
bottom surface.
This is the same as found on the bottom of a
standard Taig
tool post.
Used 10-32
thread, die-cast zinc ratcheting locking levers for the Taig carriage stop rods,
carriage lock & the tailstock.
Used same style levers for the Jet lathe.
For a smoother finish, lock the
carriage when performing facing or cut-off operations.
Dissimilar metals
(steel, brass, aluminum) allow smooth locking/unlocking action.
Rocker Tool Post,
Handle Upgrades, Tool Posts,
Cut-off Tool Post,
Tool Bit Height Gage
Quick Change Tool Post,
QCTP Tool Bit Holders,
Boring Bar Holder,
Boring Bar Sets, Eccentric Tool Holder
