In general, you're more likely to get an answer if you actually ask a question.
Gerry
UCCNC 2017 Screenset
http://www.thecncwoodworker.com/2017.html
Mach3 2010 Screenset
http://www.thecncwoodworker.com/2010.html
JointCAM - CNC Dovetails & Box Joints
http://www.g-forcecnc.com/jointcam.html
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I'm machining 1 inch bar on a cnc lathe.........mostly ID work...drill,bore and 9/16 thread....I'm having a hard time with feeds and speeds...:rainfro:
Any tips
Anyone out there today?
This site has been a great help(nuts)
There are a few of us out here, but at least in the US, today is a holiday.
I also suspect that there are probably not many members who have ever machined this particular metal.
Those two factors together probably mean that it might take you a while to get a reply.
Are you talking raw molybdenum, or an alloy?
Tom
Give it time; this is not a machinists call-center. Also, it will help if you lose the attitude and the emoticons too- people are less likely to help sarcastic know-it-alls. Apologize and wait; see what happens.
I'm not a know it all by any means.....just under a little preasure to get this job going......I forgot it was a holiday..my bad
The meterial is raw molybdenum....it keeps gumming up on me
I'm sorry I've never worked with that material and have little lathe experience myself.
You say the material is gumming up; I've heard that term in relation to copper- perhaps a quick seach how to deal with copper gumming up turning operation might lead to a few clues to to deal with it.
Gumming up can sometimes be cured with the right cutting fluid. With soft gummy materials I've always had better success using a thin fluid as opposed to pure cutting oil. I used to make a mixture of about half cutting oil and half mineral spirits. I've also had overall better success with this mixture over water-based coolant.
This type of metal is used everyday in Physics labs around the world. Although I have not machined this metal yet, I would contact your closest Physics department and ask for information. They would probably be happy to supply it. Check out this link;http://www.daleengineering.com/what_is_molybdenum.html
Unlike tantalum, niobium, titanium and zirconium; molybdenum is not subject to hydrogen embrittlement, because of this property, it is a main component in the ARC-REACTOR.
Or contact them;DALE ENGINEERING A Precision CNC Machine Shop specializing in small to medium size components made from Molybdenum and exotic metals. 3 Alfred Circle Bedford, MA 01730 | Phone: 781-541-6055.
I hope this helps,
Iron-Man
Thanks Blades!!!!
I also noticed higher rpm and sueface speed really did the trick....I turned the coolant off during the threading and squirted tap-magic in the hole and the threads came out real nice...you are so right on the water based coolant..the threads were getting real gummy.
Great, glad to hear it worked out for you. Tap Magic is awesome stuff, so is Cool Tool.