I built a cutting fluid chip filter for my MILL!



I built a cutting fluid chip filter for my MILL!

Postby grumpyvette » December 15th, 2011, 3:22 pm

I added this post to the milling machine thread, but because it won,t show Im posting it here for those few guys with heavy drill presses and mills that might benefit from the info, if you want more info do a search on "MILLING MACHINES" on the site, and reading the links will provide you with a great deal of related info... yes I know some people would rather cut their own throats than read links and sub-links but for those willing to learn , heres a good bit of useful info


A GOOD DEAL MORE RELATED INFO IN THE LINKS, and SUB LINKS
http://its.fvtc.edu/MachShop1/coolant/cutfluids.htm

viewtopic.php?f=27&t=993&p=3565&hilit=mill#p3565

viewtopic.php?f=27&t=970

viewtopic.php?f=27&t=993&p=4129&hilit=mill+bits#p4129

http://en.wikipedia.org/wiki/Cutting_fluid

http://www.liquidicecoolant.com/

http://www.micromark.com/MICROFLOW-COOL ... ,8474.html

http://www.machinetoolhelp.com/Applicat ... fluid.html

viewtopic.php?f=27&t=2198&p=8385&hilit=mill#p8385

viewtopic.php?f=50&t=8340&p=30801&hilit=larger+tools#p30801

http://www.littlemachineshop.com/produc ... us=Coolant




well the milling machine arrived,and as most machinists know you need cutting fluid and cooling oil to keep the tooling bit edges cool or the cutting bits burn up almost instantly when cutting metal, and that cutting oil is not a great rust preventative, so if your asking what oil you need ,are you asking about protecting them from rust or cooling the cutting edge of the bit while cutting steel or aluminum ?

WD40 will work for cooling the bit, on a common drill press but its not what you want with a mill that will use a constantly recirculating cutting fluid pumped to the cutting bit while in use.you can use automotive oil to protect tooling while its stored in zip loc bags or air tight boxes like tupper ware but real water based cutting oils preferable to use while machining parts

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http://www.amazon.com/CRC-SL2512-Solubl ... r+drilling
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I got my sons to unpack and install it, in the shop which was difficult as it weights 2400lbs, then after carefully reading the instructions its obvious we needed , to order a few accessories like bit holders and cutting bits, coolant pumps, coolant, table clamps, vises,etc.
(easily an extra $500, but that was kind of expected)
but my sons should be able to use the machine once all those components arrive!
this should allow them to do a good deal more

the guys at the grizzly site (tech guys) were friendly and helpful , and understanding)

http://www.grizzly.com/
anyone with a drill press or a mill quickly finds that drilling steel builds heat and your better off with a constant flow of cooling cutting fluid which obviously requires both a pump and method to keep it flowing to the drilled components and a tray and drain pan or some way to collect and recirculate the cutting fluid, and a realization that the fluid will of necessity be both reusable, water soluble oil base cutting fluid that prevents rust, and not cause rust on the tools.
as most guy know,combining fairly slow rpms and constant flow of cutting oil over the bit, contact area and moderate pressure are pretty much required on most metal drill jobs, leaning on the drill and spinning it as fast as you can are a sure recipe for a burn,busted, bent or dull drill bit

http://www.grizzly.com/products/Rustlic ... llon/H9240
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looking at coolants for the cutting operation, any info is appreciated from experienced mill operators??
rust prevention? aid to cutting? tool life? any info at all??
I purchased this coolant pump and tank combo for use on my drill press and mill
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http://www.grizzly.com/products/h9240
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http://www.grizzly.com/products/7-Gallo ... stem/H8140
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or is this better or worse??
you need constant coolant flow over a cutting tool on a mill or the bit burns up

http://www.littlemachineshop.com/produc ... 1229644699

well I purchased this along with the mill and it works good so far
but I got to thinking that all the extra fine metallic chips that get carried by the coolant back to the coolant pump might cause damage so I purchased a few simple components and built a cutting oil filter, to prevent crap from entering the coolant reservoir and pump.
I purchased 2 ft of 1.5" pvc two threaded reducer end caps three 90 degree elbows, two threaded hose barbs and a package of brass scrub pads to act as a rough filter medium inside the pvc . the hose barbs screw into the end caps, the end caps glue into the pvc and the brass scrub pads inserted inside the pvc acting as a metallic chip barrier that easily allows liquids but not metallic debris to pass, correctly assembled you have an (L) shaped section of 1.5" pvc pipe with each leg about 12" long , and two reducer end caps that face vertically with hose connections and a basic course filter internally by use of a couple brass or stainless mazes for coolant to flow thru that will trap most of the chips in the fluid.
its not designed to trap or filter out everything but it will cause almost any of the larger chips to fail to reach the coolant tank and pump for recirculation,back to the coolant sprayed on the cutting bit location. this at least in theory should reduce the chances of the coolant pump ingesting metallic crap , like small cuttings and flakes thats bound to eventually damage the pump



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IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
grumpyvette

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