Misting surface while fly-cutting.
Coolant Mist System
Last updated on
Tuesday, November 20, 2012 06:29:31 PM
Eastern US Time Zone
Nozzle, Air Supply, Valves, Reservoirs
This is a Kool
Mist spray coolant system (manual). I use it mainly for air cooling & chip
removal.
A momentary, solenoid-activated liquid control valve will allow very short
deliveries of liquid lubricant.
The solenoid can also be controlled via g-code using Mach3 & its
relay box in a CNC
application.
Nozzle
Misting surface while fly-cutting.
The
nozzle moves with the cutter. The paint was too thick &
the magnet too weak to allow a strong attachment.
The liquid/air mix valve is
attached to a ½" steel plate that has two 10-32 cap-head screws threaded
into the mill.
Coolant/air mixture valve mounted on steel base with aluminum
spacer block.
A 10-32 cap-head bolt fastens
the unit from the plate's back.
Brass spray nozzle is adjustable. Coolant & air mixed at the
tip.
Air Supply
Shop air supply compressor (manual).
Valves
Sub-plate mounted onto the left-rear of the mill stand with
three sheet metal screws.
The plate has 10-32 bolt taps for the L-bracket.
L-bracket milled to hold the air valves. The channel is ⅝" to trap the connector
nut.
Note the 6-32 setscrews
(above) were changed to 10-32 (below) for a better grip.
Installed ¼" NPT (6.4 mm) mini-ball valves to control both
the air & coolant supplies.
The air valve &
the spring-loaded quick connect/disconnect mount through the
bracket.
The gap between these
particular connectors is about 0.08".
The system works well with higher (70-90 psi) pressures.
The two valves allow good control over both air & coolant.
Coolant tank made from a 1 gal. gas can which is low cost & chemical resistant.
The coolant pick-up tube end has the Kool Mist particulate filter/anti-siphon
valve.
The metal lid has a 1/16" hole to let
in air.
The coolant is Kool Mist 77 diluted 1:20 distilled H2O.
Kool Mist SS coolant reservoir with
mixing & air supply valves.
Nozzle, Air Supply, Valves, Reservoirs
