How should I remove more metal faster???

thanks dms tony and paul
I'll try a few things tomorrow and add air and let you know how it does
steve

ps i'm looking for corncob cutters now on ebay :))
 
One thing to remember is that the harder you push things, the thicker the chips will be if you increase the chipload. You don't want to recut those chips, so the mentioned air jet will help to keep them clear. You might want to consider a mist system to get a little coolant as well as blowing the chips away. Most low hp high rpm spindles like smaller end mills with high speed and feed. And many programming packages have cutter comp routines so even if you don't have canned rouging/finishing cycles, you can comp the cutter diameter larger and run it twice, once with and once without comp.

And yes, try a corncob. I may have a couple of regrinds that I can send you. I'll look tomorrow.
 
tony the plan for the mill is flood cooling but i have to make the enclosure first
i went 30 miles to buy a finger brake/shear today after calling to make sure it was in stock and when i got there they could not get it down there was no one to run the forklift and they would not let me i was so mad. so the enclosure is on a little hold.
steve
 
That's probably an OK end mill. Cheap enough. But you have to remember, if you are going to cut just 0.030 deep, that's a lot of wasted flute. The best approach is to get as deep as you can and still pull it. That's one of the key advantages of the rougher. They take less HP. But you need to bury them to get the most out of them, and somehow I have doubts about you pulling that 5/8" end mill at proper depth. I don't know what HP your spindle is, but it seems to me you'd be better off with something smaller, like maybe a 3/8 rougher about 1/2" deep. Just a gut feel though.
 
my mill is 2hp and says up to 1-1/4 endmill
the quill is fully retracted so all the side force is on an 8" wide 12" long 1" dovetail it should take the force of a 5/8" endmill I think
steve
 
On a smaller CNC machine you are probably going to be happier with smaller cutters at higher RPM and feed rate. The exception being face mills that are cutting wide, but shallow. I tend to stick with 1/4-3/8" cutters. They have the advantage that they are cheaper too.

On a manual machine there tends to be the desire to pick the largest cutter you can find, and bury it as deep as possible. CNC is a different creature, and you don't necessarily want to follow the same path.

Another thing occurred to me this morning, how are you entering the material? Plunge, or helical ramp? If you are plunging, that is pretty rough on cutters. A helical ramp will let you engage more smoothly, and put a more constant load on the cutter.
 
If you want to remove metal faster,cut that ring in the lathe,if you have a decently heavy one,like a S.B. heavy 10,or better.
 
:lmao:
george you missed the topic
it wasnt about making the part in the pic, it was milling steel quicker
steve

i ordered 2, 5/8 roughing endmills
everyone keeps thinking this mill is underpowered it has the same size motor a bridgeport has and as ridgid as a rock it is milling with the quill all the way in.
it was not a question of enough power but more a question of how to remove a lot without destroying the cutter.
thank you everyone
steve
 
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