fly cutter vs face mill

hi this is tim at makers machining here again we've got a nice little cut that we're making here and i wanted to show you what we're doing here i'm making a couple of wedge blocks on a tool steel I've got an angled machined on them here I got some layout notes on there but I squared up the block so they're nice and square and now I've got my advice here which holds accurately I've set my other block up there on an angle I got to cut a 14 degree angle on both blocks so they match together but I've taken a pretty hefty cut here and I just wanted to show you how the cuts going but before I do that I'm gonna tell you about the cutting technology that we've got today back in my day I used a fly cutter it's one carbide cemented carbide tool bit with with a holder and it would spin around and cut nowadays we've got I mean let me zoom this in here nowadays we've got a face mill that's got carbide inserts on there those were octagon shapes and there's four of them in there versus my old my old handy fly cutter they're only had one bit on her so I can really take a cut here this is s7 tool steel and I'm taking a hundred and fifty thousand snip the cut here you can you can see by the chips on the table that they get pretty hot with the with the inserts that we've got today the heat is supposed to be going into the chip which you can see I've got a a box full of chips here I don't want them landing on my arm because they're hot they probably get between seven and eight hundred degrees when they turn blue so you want them landing on your arm but I'm gonna go ahead and take a a cut here and you'll be able to see what's going on and how deep of a heavy cut I can take on that and we'll we'll give it a shot there so I'm gonna turn my spindle on I don't think I've raised my table up here yet you got to pay attention where your where your cuts it but I'm gonna walk 150,000 that's a crank I turn on the half on the handle on the milling machine I've got I've taken a bunch of cuts already and I've got to get it down to this line right here an inch and a quarter from the edge of the piece up to that line is where my angle has to stop so I've got I've got probably 3/8 of an inch to take off very epic I'm taking a hard 50 walls at some time I'm gonna make a couple cuts here and if you want to keep an eye on that the RPM and the feed rate is is critical once it gets into that cut and it just buzzes right along now those inserts there octagon sakes like an eight cutting lights out of them why what happen to turn the spindle on backwards and break them all here maybe side as you can hear it's a nice steady load on the cutter you've gotta have some horsepower to do a cut like this voila we've got a gun well that's a pretty hefty cut they're gonna grab this thing here then you can see we've taken a hundred and fifty thousand top of there and made a real nice cut I've got a pile of blue chips over there sometimes those cardboard boxes start smoking but you don't want those things laying on here and they're mighty hot anyhow the carbides are great these days I grew up before cutters like this or even made and now it's easy to to cut and make fast time on doing machine

Channel: MAKERS MACHINING

Views: 54,635

Keywords: #fly cutter, #face mill, #carbide, #toolbit, #carbide inserts, #milling, #toolsteel

Id: L7HSPfiNuNc

Length: 4min 12sec (252 seconds)

Published: Fri Nov 23 2018