Need Help!- slitting saw speeds feeds and d.o.c?

[garylb]

Hi, can someone give me some ideas of speeds, feeds and depths of cut for a 5in dia x 3/32 slitting saw with 124 teeth. I need to cut 1inch deep in total. I dont have much experience with horizontal mills and usually when this job comes up i run the cutter at 175rpm taking 1/16 deep cuts and it takes forever. The cutter is hss and i will be cutting medium carbon steel.

[Perfect Circle]

Try .002 feed per tooth
191 RPM
and 47.368 IPM
One thing I would do, would be to see if you can use a smaller dia. cutter
That will make it so you can take deeper cuts. and faster rpm's and imp's
"more ridgid" On doc I would say try .250 and ease up on the feed to see how its going to work. If that works fine, try .500 then if that works try the whole depth unless you need the 1" to be in some tol.
::::::: DO NOT CLIMB CUT!!!!!:::::::
Feel free to ask anymore info.
Good Luck~~!

[garylb]

hi, thanks for the reply. I cant really go smaller on the cutter dia due to clearance. I have been on a website that gave me a rcommended speed of 80-90 rpm. Do you think this is too slow then? Seems pretty slow to me!

[jeffrey001]

Depending on the type of milling machine and setup rigidity, you can easily cut all the way to the 1 inch doc, only one pass.



80-90 rpm is not too slow, if the is medium carbon stell.

.


Jeff

[garylb]

1" in one pass?! I cant believe ive been wasting my time using 1/16 depth of cuts. So i should go for the slower speed of 80 rpm if i use 1 pass?

[jeffrey001]

Slitting saw are made to do this kind of cut.

As soon as the saw will be in full cut, it will go through it like butter.

Only at the beginning of the cut, it will be a bit shaky.

YouTube - ‪Tattoo machine frame 2.4‬‏
The only difference in this video, it's cutting aluminum with higher rpm, but you can do the same in much harder material with lower rpm and less feedrate and a good flow of coolant.


Jeff

[garylb]

coolant is the only problem i have as the pump is broken so i have to use a bottle. Do you think this will be ok if i continuously squirt the coolant on the cutter?

[jeffrey001]

If you think coolant could be a problem, lower the rpm as it will burn or damage the saw

Just be sure your setup can handle it, you could try 1/2 inch cut to begin with and if every thing was ok, go with the full depth.


Jeff

[garylb]

ok, thanks for the help. I will give it a go next week and report back!

[Perfect Circle]

Sorry about the feeds and speeds that I posted..
I was calculating carbide
You should be fine if you cut those figures in half.
Thanks for posting jeffrey001 or I would of been brain-dead all weekend.
Good Luck