flood or through coolant for drill
flood or through coolant for drill
(OP)
When drilling would it be best to turn off flood coolant and only run through coolant with a drill? Would this create a higher pressure of coolant flow through the drill, as opposed to running both flood and through coolant? any suggestions?





RE: flood or through coolant for drill
Mike Halloran
Pembroke Pines, FL, USA
RE: flood or through coolant for drill
RE: flood or through coolant for drill
Also be aware that if you don't keep your coolant very clean or with enough use the impeller and seals in the pump will wear and it will loose a lot of efficiency
good luck
A.R. "Andy" Nelson
Engineering Consultant
anelson@arnengineering.com
RE: flood or through coolant for drill
- material
- diameter
- depth
- rpm
- ipr
... all I can suggest is to double the feedrate, and keep doubling it until you split a drill, then back up one step.
Mike Halloran
Pembroke Pines, FL, USA
RE: flood or through coolant for drill
0.384" diameter holes
running at 180 speed ft2/min (~1800 rpm)
and 0.008 feed in/rev
its a carbide drill i get about 500 holes down and then the chips dont break up and start bunching up around the drill.
RE: flood or through coolant for drill
Try reducing the rpm by 100 rpm at a time and see how your tool life changes.
Mike Halloran
Pembroke Pines, FL, USA
RE: flood or through coolant for drill
A.R. "Andy" Nelson
Engineering Consultant
anelson@arnengineering.com
RE: flood or through coolant for drill
RE: flood or through coolant for drill
RE: flood or through coolant for drill
A.R. "Andy" Nelson
Engineering Consultant
anelson@arnengineering.com
RE: flood or through coolant for drill
I'm guessing that you are not pecking, so flood is pretty useless. Virtually no coolant will get to the tip.
I would only run the thru; but that's just my opinion.
J
RE: flood or through coolant for drill
IMHO, the best way to start is to look at the wear pattern on you drills - to understand "where it hurts" - it is drill corner's excessive wear or the chisel edge presets the problem, or the major cutting edges (lips) are simply chipped. Depending upon the results obtained, the proper solution to your problem can be found: carbide grade, tool geometry, coolant, etc.
Viktor
http://viktorastakhov.tripod.com
RE: flood or through coolant for drill
YMMV.
Regards,
Chuck
The Manufacturing Reliquary
http://cmailco.wordpress.com/