How to run Udrills (and NOT get them stuck!)

[Music] hey guys Matt here from H heavy duty in this video we're going to be running a 50 mil U drill in the little lathe here now I'm going to set it up we're going to show you the feed speeds I'll even stick the g-codes in the comments we use these all day long they are brilliant it's not new technology but like from when I first used to come in here as a kid like 35 years ago I see my granddad behind an old green lathe and he would be there winding in highspeed steel drills to make crossover Subs just like this now we're going to do this end today I'm going to stick a um a box thread in there but we need varying size UD drills simply because depending on the size of it for maximum speed it's either 32 mil 38 4250 or I'm not doing this one today but we just got this new Big Boy in that is a 78 mil ill I think it's one of the bigger ones you can get for the big machine over there so in a future video that's what we're going to be running I'm really excited to do this we just we got a whole bunch of other work going in it so I haven't had a chance yet uh so if you want to see that one subscribe to the channel um we're going to be bringing in all sorts of cool videos over the next couple of months another one that's coming again probably next week or the week after is this little guy man the we've run it once the chips that come out of this explosive really cool stuff I love the drilling side of things just the feed speeds you know playing with it toying with it getting it where it runs just right another thing I'll share in just a sec is there's a whole bunch of different types of indexable drills or ills some I like some I really despise and there's some reasons for it so I'm going to show you that none is better or worse than the other it's just how you run them um the style that we're going to run today is this guy now that is an it's quite an old Tech Kon metal one two Trigon tips for us these are the ones it's a 2.5 diameter for us these are the Ducks nuts they are awesome because you only need one style of insert they don't squeal you don't have to run them super hard which I know there's a lot of channels out there that are like trying to take everything and dial it up to 11 what kind of the 85% is I just want to run everything at a comfortable maximum where you're not going to break carbide I'm not going to you know have to be like on it watching it where it'll just 8 days a week just knock it out so that's why I really like these ones unfortunately I'll show you the two other styles that exist you have to run them really really hard or they squeal like hell these ones you can just plug along and they don't seem to do that and they stay on track really well as well so we're going to go through and run that now um yeah the reason why UD drills are so good is because they're quick so this will run about probably 10 times faster than a typical high-speed steel drill like the ones Hal used to use just because you've got carbide tips and you can plow into it there's a couple of things you need to know so let's go and have a look 32 38 50 and then 78 so these U drills are what allow us to put holes in really quickly now styles for 4140 Steel in my opinion this is again just my opinion I'm totally fine if people disagree with me but the two Trigon tips I find are brilliant now you can see this guy here it it's had a hard life um it's been stuck a few times it's probably been run I don't know a thousand times Bengals will happen I'll show you the processes we put in place to avoid them it's probably people freaking out um these were actually run in an old manual lathe before I put them in the CNC so that's where a lot of the damage actually occurred if you're going to use them in a manual lathe you have to have really good processes to make sure that you're dead on size and also that you are your tool height is is spot on correct now this is a brand new one one of the things I like with the Trigon tips is two things you don't have to run them super hard to get them to chip off and that both both inserts will actually make contact with the cutting face at the exact same time you'll notice if I come over here particularly on the the square style these are my least favorite may be great for Alloy we don't do a lot of that here everything that we do is really hard 4140 steel and I find that they tend to want to dip down if you don't run them really slow at the start and then you can speed them up we do try and do it but you got to keep your eye on it because the Trigon will hit just before the big guy does right now these inserts tend to squeal simply because you got a lot of cutting face there that's hitting all at once and if you don't run it really hard it's just going to make a lot of noise and that's one of the common um comments with you drills is man they squeal you will find in my experience these ones don't they are really good unfortunately they're the old technology so for example Ken metal only tends to make this style in 2.5 diameter we tend to need 3 to four so this is just in the little lathe we've got a this style in the big lathe simply because I can't buy one of those but for the little for the um big one again bought one of these simply because I don't need the depth and I just know it's going to run great and I don't have to spend 189 kilo Chuck at 1,000 RPM to get it to chip off so one of the things you want to do this goes without saying but face the buad off your drills are nowhere near like highspeed steel and forgiving you want to make sure that it's all nicely faced off otherwise you're going to find a ill that's going to go for a walk Okay so so first check that we do in here is to make sure the tool poost is actually dialed into zero it's the very first check that we have safety procedures prior to running this is for us in heavy duty land check that the tool post is dialed to 0.0 as in dead on cool and slideway oil levels headstock and oil level check tools and tips always got to do that and drill it into people because it's easy to just get lazy and in the habit of just throwing it in a tool and going for it um and checking your Billet Dam iter matches the program as in this Billet here has got to be the right size to the program always check it now even though these tool posts here for the style of work that we do these are a custom heavy duty tool poost they've not only got your locking bolt down the center but also three others so that you can do deep drilling because of the forces that actually get put on this tool poost will push it without the locking in it even that said we still check because it can run out they usually don't but it's you better to be safe than sorry so if we do this and this is dialed in correctly that won't move but point that has not moved well as you go back to forth that's just a bit of so that there is dialed in bang on and if that's off right if that is off what you're going to find is that when you're Drilling in here 01 along here could be a mill out there or more depending on the length that goes for boring bars that goes for everything it will throw all your tools off as I said if you've got a CNC turret that's not going to be an issue for you but for us check that it's dialed in here and then we also check that the tool is dialed in we'll go and do that now so we need a clean surface to dial in on remove the U drill here and pop in just a really simple little shot made tool here that's a perfect fit now we have a surface to run our dial indicator on it'll also mean I'll show you when we run it in the dial indicator is going to run to Z Z and you can just adjust it now we've already done the tool height on this one and it is locked in permanently so I'm just going to check our x axis because then we lock that in as zero in the program we don't actually have it as the width of whatever we're cutting we just call it zero and then we add 05 of tool wear because most UD drills will run like this is a 50 mil U drill but it's actually a 50 to 51 mil so we run it at 50.5 it just gives us a bit of clearance and we just do that in toolway so that is how we're going to dial it in now and you can see that simple process dial indicator off the nose there and if you watch the dial it will not move from zero as we go around that the most important part here is tool height and then we can adjust the the xaxis depending on what size hold it drills now all right we'll reinstall the E drill now when you're doing these really good idea that as you come down you just want to give him a Little Rock and make sure that's it there lock that one down and the other and we are good to go now the other thing with these U drills the way we've set them up you'll notice we have this is all done after the fact they are all plumbed in that is just a little piece um of nylon where we've just screwed a tap in and it's all plumbed in VIA that so you get maximum coolant flow you can still use the normal cooland cuz this will only flow when that's connected so it's a really easy way to get through coolant into a year drill and a lathe like this and you can still use this anytime you like so that's there ready to go all tightened up let's do it I did promise you the G-Code so it's obviously going to go to its start position select tool 34 we're going to start with a RPM of 300 g97 300 just for the first that's spindle on just for the first it goes to Z3 first I'm actually going to change that to yeah Z3 is fine um coolant on now for the first seven mil just seven mil you could do five but for seven we're going to run a very low feed just so that I know what size hole it's going to drill I'll stop it at five pull it out and check and then she's going to run 500 RPM now you can run these a lot harder we just choose choose to run them at a feed of about .13 going 110 mil deep and then she's going to come back out turn the spindle off turn the coolant off and go back to its start position I'll put that in the comments if anyone wants it um that's just how we've found the best way to run them and let's fire her up both tis touching at the same time to see what size hole we've got all right just checking measurement here so that there is 50.5 we'll call it 50.5 which is dead on for a 50 to 51 mil uill so that means dialed in absolutely spot on we're just going to run this now and it just lets you check always check um I if I was running 10 of these in a day I'd check on the first one and then maybe on the fifth um just to be sure now very good P it on as I said you could do less on the Z but five six and off she goes I just changed the speed to14 B the chips off alternately program can them coming off [Music] nicely loves it even though it's a roughing tool that's a pretty neat little finish in there okay so from running that you probably saw that there was long stringy chips coming out just means you've got a feed bit harder or increase your speed I tend to find that with 4140 you want to get your speed about right now we've been running it at 500 RPM cuz that's what medium gear is in the large lathe and if you've seen any of the other videos it's got enormous Chucks so I don't like to spin it any faster than I have to in this little one though I'm going to try and approximate 900 RPM in this over the next coming week or so and get the feed up to probably. 16.17 .18 because that will chip off really nicely and you won't get long stringy stuff you'll notice that about probably a third the way through the drilling cycle I just dialed it up to 0.14 .15 and then it started chipping off but it could go even better so that's the fun of being a machinist as you get to play around with feeds speed setups I just love it I really do love this stuff and I hope that in these videos my goal is that I'm completely authentic with you I'm not trying to be perfect I'm just trying to share with you guys what we're doing in the hope that someone else will get an idea off it like I do watching a lot of the videos that you see out there that's all we do so if you find this useful if you want more heavy duty content like subscribe I appreciate it when you guys do um and I'll see you in the next one we're going to be doing that Big Y drill at some stage soon the long HT HTS drill a whole bunch of other cool stuff thanks for your time I'll see you next time

Channel: HAL Heavy Duty Machining Australia

Views: 24,585

Keywords: australian machinist, cutting edge engineering, efficient udrills, expert tips, inheritance machining, maximizing udrills, titans of cnc, udrill strategies

Id: S-rdVlX6QoU

Length: 14min 15sec (855 seconds)

Published: Sat Jun 22 2024