Bracket
Drilled & tapped two, 6-32 holes for cap head screws at the left & right front corners of the table
to mount the X-axis scale bracket. Milled down 1-1/2" x 1-1/2" x 1/8" aluminum L-channel for the bracket.
Taig
Micro Mill DRO X-axis Scale
Last updated on
Sunday, April 15, 2018 02:55:25 PM
Eastern US Time Zone
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Bracket, Scale Mount, Cable Route
This DRO
modification has been removed for the CNC conversion
but the information has been retained for reference.
Bracket
Drilled & tapped two, 6-32 holes for cap head screws at the
left & right front corners
of the table
to mount the X-axis scale
bracket.
Milled down 1-1/2" x 1-1/2" x 1/8" aluminum L-channel for the bracket.
Needed to retain the table lock feature.
Shortened the hard
stop 3/8" dowel pin &
tapped it to accept a 10-32 center transfer.
The pin corner is smoothly rounded to facilitate assembly.
Bottom adapter plate for the X-axis scale. Note the transfer
scribe line & set-screw hole.
The hole was
reamed to
3/8".
Scale Mount
The unit is bolted
together using self-aligning, spherical washer (pairs) between the scale & L-channel bracket.
Click on linked thumbnails
The L-channel serves as the scale mount & protects it from impact, fluid & debris.
I have installed rubber washers on all the scale mounts
to
allow floating to reduce strain on the transducers.
The RF-25 mill's free-floating
Z-axis design works so well that now all of my mill & lathe scales
are attached at only one end while the other end remains captured but loosened
to allow floating.
This approach greatly reduces minor out of alignment induced stress on the
transducer. This
design also helps to reduce DRO jitter as does a clean, deburred transducer
with NR capacitors.
Cable Route
The hot-glued signal cable exits to
the left, is spiral wrapped & is held down by a
3/8" plastic clamp fastened down by the left, way cover cap-head screw.
Bracket, Scale Mount, Cable Route
