Introduction to the Grizzly G4003 Lathe

hi were here to make want to introduce you to our new it's the it's a lei that's a grizzly G 4003 it's a 12 by 36 gearhead lathe and will be a really nice tool but this video I'll talk about a few things first of all I want to talk about safety personal safety and we'll do a little tour of the machine to show everybody what the parts are called and where they're at and then then we'll do a little bit on the operational safety side so let's start off here the lathe is a little bit different in fact it's very unique actually in our shop because the lathe the cutting tools are stationary the cutting tool fits in the two older and it essentially doesn't move except for your feet in but it doesn't move but the work dust all our other machines of course have saw the blades turning or drill press to a drill turning whatever so it might seem like it'd be really safe you know since the tools not moving but actually we've got all of this moving the chuck whatever we have might have here on the spindle we've got the workpiece and that's what we have to watch out for we have to our vein de jure in here is entanglement so first rule of course we we don't enter the shop unless we have safety glasses on right whenever you operate a lathe take off the rings and watches sometimes they're hurting it off huh ring take off your rings and watches make sure you don't have any loose clothing long sleeves simply not allowed half short sleeves if plan ahead if you're going to be doing some blaze work when you're at the Maker Barton wear a short sleeve shirt if you you're here and want to do something you got a long sleeve shirt on take it off don't operate the lethal long sleeve shirt I'll show you why it's a little clip we got it's a video that's been going around YouTube quite a bit but I grabbed a little part of it just to show you but in this particular video the lathe operator is polishing a long shaft and he's he's got gloves on which of course we don't want to wear gloves either and but he's also has a long sleeve shirt on and he's just taking a sandpaper and he's sanding the thing which should be simple enough it's a large lathe and just kind of watched when he gets toward that Chuck apparently either the glove or the shirt and tangles and you'll see what happens watch this you wow that's something that I mean it looks like he was probably alright but that thing actually grabbed his shirt had enough force that ripped his shirt off meantime pulled him up on top of the lathe wrapped that that shaft around him and of course says if you watch the whole video you see that the takes a while to get the people to turn off the lathe and get that shaft out of the lathe truck anyway that same thing can happen on this little a this thing is a small but it's very powerful if we put a two inch piece of material in the chuck for instance that 2-inch piece of material when we cut it can exert at 70 rpm could exert as much as 1,800 pounds of force on the tool or against you if you get your shirt caught in it even at 600 rpm is still over 200 pounds of force which you could not defeat so again no long sleeves no gloves keep that loose clothing keep that hair back don't if you got a ponytail tuck it in the back ear shirt or something you could swing over and catch as well so and of course don't ever leave the lay the tenant unattended Wallace running what that basically is the safety issues we've got a manual it's always gonna be in our manual rack over here it's got safety information it's got operator information on you're welcome to grab it and take a look at anytime you want it sits there and in fact I encourage you to look through it and and just see you know because I'm sure I'm not covering everything here well anyway let's go for a little tour on the lathe all right let's do a little tour of this lathe here lay the consistent well miss baton part portions called the headstock and then the headstock we have a spindle and the spindle is what is turning and produces all the motion in lathe spindle has a Chuck on top of it fastened to it and the check spindle is is called a d1 for camlock and this is the example of a truck we go in there this is an occult Chuck and you see these three pins they've got a little concave area there that the cam grabs to the pulls the Chuck tight against against the spindle nose spindle nose has a little male taper that fits in this female taper right here and that's what centers up the Chuck it makes it very precise so there are three cams and you'll see on the cams there's a little there's a little straight line on the the camp itself is black a little straight line there and you want that line that the truck's mounted properly you want that line between these two arrows so that's that's a spindle now spindle gets its power from a motor and the motor runs through a transmission to give you various speeds so these are the levers for the transmission this is it's kind of like a three-speed manual with with a three-speed new medium low low medium and high speed range or something like that anyway between these three these two levers with their three positions you can get nine different speeds the speeds range between 70 and 1400 RPM so this is what controls the speed of the spindle this thing this lever controls the direction of rotation of the feed rod which is down here and also the lead screw the feet rod is what controls the power feeding on the machine both longitudinal and cross feed and the lead screw is used for threading for cutting threads anyway you can see there's a little arrow if I have it over on this side this lever this way it would feed away from the chuck on this side which is where it would normally be we had a feeding toward the chuck and that automatically moves the character anyway underneath we've got the the power controls and our control go ahead and put my badging you see we have power applied the machine now I can take it out of the reset if it's beautifui don't see a badge or you put your badge in there you don't see a power light that's probably because the reset button push so just turn down a little bit and pop it out delay it still won't run at this point lift push the power start button and then we can done of this little button here is called itching now on most lays that wouldn't be called itching that'd be called jog and you can see it allows you to run the blade just small bits and you can cut you can use this too as you know to test a set up or whatever I'm to actually run it and be over here and I'll show you how this works on me anyway turn off the lathe pull your card or you just hit the reset button but also whenever you're working on the lathe and pull out your card whenever you changing trucks pull out your car that's a safety thing okay below the electrical controls is another lever and this lever is a selector lever this flex between this little you see little zigzag line here that's for the feed rod so it's over here but this transmission will be driving the feed rod if it's over here it'll be driving the lead screw and the reason I do that is so that you know you don't want to be running the lead screw if you're doing feeding because you can get something caught in that lead screw or something like that so it's a good idea to have that that feature and then below that is another transmission this is another double lever down this this one is kind of neat this this lever on the left hand side has five different selections ABCDE and then the lever on the right has eight different selections one through eight and by looking in a chart and there's several charts on here you can use these levers to select either the feed speed in say inches per revolution nativity would cut something and say between one and three thousands of an inch per revolution I could set these two to get that and also these are used to select the the thready so for instance if you want to cut 20 threads per inch you set it on four and on C so that's that's the headstock now this whole section here is called the character I'm going to take this tool out for a second and the carriage is moving wrong about this it's a crank right here that moves along just take their part up here looks like a horse this there's a headstock tailstock and my god there's a saddle right here to middle this it's not part of this is called the saddle this is called the cross feed and this part up here is called the compound and the compound can be rotated and there's a little scale on here we generally would keep the compound at fifty nine and a half degrees that's because that's the best angle to be used for cutting through it so generally on this lathe will the compound be used for cutting threads you can use it for cutting tapers you need a particular taper nose area down here is called the apron and the apron has the longitudinal feed there's actually a little scale on this on this rotate part where you can do you measure the feed although we'll cover the digital readout of it does much better much nicer job this lever right here is used to select it is it was up or down it selects the direction of or selects the movement for the power feed for instance believe that it's up yeah if it's up it's a selects longitudinal feed in other words it'll feed either this way or this way the location of this this liver right here so and then if we put it down it'll operate the cross V so you can power across B the advantage of the the power feed is a couple of course one thing that makes a smoother cut because it's moving at constant rate the other thing is and whenever you're lifting whenever you're rotating one of these things you're actually doing a little bit of lifting a little bit of pushing down and that can show up in your work if you do the critical work and of course the the compound is always made you see now this last letter over here this one is engages we have done this let's see if I were to engage one of these half nut cannot be engaged there's if you did that then you'd have a situation with Leila janah so this is being the center and loose like this then you can engage the half nut and half just used for thread cutting and we'll talk more about that later perhaps we'll make a video on thread cutting there's plenty of videos on them on YouTube already about that sort of thing let's see what else we have her and of course this is actually the power centers off and then you pull or it's a safety thing you pull it toward you a little bit you can either bring forward or reverse and what the direction you bring this lever is the direction that the Chuck is going to spin and I guess lastly it would be the tool post this lip here is call it tool post and these are called tool holders and somebody asked this is loris type tool holder it's not a it's not an official loris two orders those are quite expensive we get ours in force but it's a and the size is bxa so if you wish to purchase some of your own tool holders make sure they're Loris compatible and make sure the size beat x8 and these drop down here this is a wedge arrangement and it grabs this dovetail on the inside on both sides all along the side so it's very very very sturdy so the tools you know there's a feels typical if we're if we're cutting along the length of the piece that's called turning if you're cutting along the Facebook piece at the end of the piece it's called facing so this was turning this is facing this is turning there's some spacing so this would be a turning tool because it's designed to move along like this this tool set up for facing because it's meant to travel along like this okay this is actually a threading tool it's got a 60-degree cutter and it would of course it would fit it would we would be just a turning operation this tool is a doublet thing and what this is used for is chamfering you can use it this way the facing thing to chamfer the inside of the hole and you can use it this way as a turning operation to chamfer the outside corner of a piece maybe I shall show you I took this piece for instance I might want to chamfer the inside of this which case I cut it and that's a nice 90 degree cutter so because a 45 degree chamfer or I cut the outside a chamfer like this typically you cut the chamfers a fairly low speed to the white cheddar but works pretty nice this is a cut off tool if you're used to would way you'll recognize this kind of tool because it's very similar to the cutting up cutoff tool or parting tool to call it in a wood lathe and some other turning tools here there's a Warrior's up this is more common boring tool a boring operation is when you are cutting the inside of a hole to make it very very true cylinder and very precise and this is a knurling tool down there we've got some chucks and things on they probably have a picture but anyway let's go over here to the tailstock and take a look at it alright this is the tail stock and tail stock has a barrel you might call it the barrel has a number three Morse taper on the inside and there's a crank on left back that extends the barrel the tail stock slides up and down and it can be locked a little lever right here and then also the barrel itself can be locked from turning with another level over that's back here the tail stock is used by most commonly to support things this is a live Center and it's called live center because it actually has a bearing inside there we also have dead centers which look somewhat similar they're a little bit shorter and sometimes they're quite handy too they do not turn you use a little oil on them to lubricate them but the live Center is probably the most common commonly used Center today this is a good taper it fits in there and it fits in there pretty tight so to get it out just back it off and and there's a rod inside here that will pop it out we've got various drill trucks up on what size holes you want how heavy as you need to drill go truck like this needs going fairly deep now this has a Tang on it and that keeps it from turning you wouldn't want to accidentally turn loss in the taper here because it could cause a galling and you know mess up the taper a little bit so it turns out on this particular lathe that it wants to go in the taper horizontal you look you'll feel that when you try putting I won't go then all sudden will go so then dump it back in there and it holds pretty good and then obviously you can screw you've got a a scale on the side of this plus you've got the rotation this is 1,000 of an inch per for her graduation and 1/10 of an inch per rotation so it's actually pretty accurate put this back up here and that's the tailstock all these areas down here that both the carriage and the tailstock slide on are called the ways and again this is this bottom rod is the rod that controls the electrics for the lathe forward reverse on the motor this rod here is the feed rod and this rod is the lead screw that's used for threading and that's about about all there is to a lathe but all these things will become your new - this may be somewhat intimidating but I think that pretty pretty quickly you'll get from here with these items and it'll be just become everything that we come automatic all right when you approach the lathe there's a few things to check out first of all it's a good idea to make sure that the lathe is in low speed with that so we've got the little red lines right now b1 and Mike artist is here it's not in the machine I mean we haven't done that yet make sure it's in here I check everything else make sure everything's in place and then now the next thing to do is to check check the spindle now you can move the lever over halfway or so between between speeds and it'll spin nicely now usually will will have a three jaw Chuck and hopefully whenever you leave the lathe mount the three jaw Chuck so the next person because that's the most popular thing by far that we'd be using in the lathe make sure the chuck is tight examine all these cams make sure the little lines between the two arrows and that they it is tight somebody may have put the Chuck on and got in a hurry I forgot tighten these up and you've turned on a lathe and check wobbles off it falls under the bed that's not good now if you change the the truck if you ever do that that's fine but make sure no matter what Chuck you're putting on there or taking off I always put this little board here this is Chuck later Chuck changing board and this will help protect the ways because we take this off it's really easy to let this thing drop down you don't want to hit these ways that's what the machine is all about these ways if they get damaged then the machine is not precise anymore when using a three jaw Chuck ready draw Chuck for that matter be careful about the extension of the material you put your material in there and you put it in there this could be a problem if you just if I had this extended out that far always put by the way never leave - never never never leave the Chuck key in the Chuck always take it out put it right here is just that easy this lathe starts up very very fast and it could really it could it could hurt somebody really bad it could damage the lathe at this came along and hit there it could break would damage the ways it could break the Chuck you know there's a lot of things again anyway getting back to this so I put my workpiece in there and I've got to extend about like that now if I try to machine this what's gonna happen is it will actually try to climb up over this the tool and when I climbed up with a tool quite often they'll bend this where bends that it becomes not a straight shaft but a bent shaft and they'll pound this very badly I mean you can destroy your tool holder it was a heavier shaft ik you know I've had tools actually get bent and so this would be really careful to the general rule is you don't want to extend material eyelet truck more than two to three times its diameter and I'd say about if you can see that this is what probably three-eighths material so I wouldn't want to go about an inch at the most and if you're taking a very heavy cut of course you want to be closer this is certain things that you learn and experience but let's try to keep those experiences in a safe area not in the area where you want to have much equipment now another thing is I mentioned this before is that you don't want to stick a long rod out the back I mean it would be it'd be tempt you to put a five foot rod in here and and thread the end but if you do that it's a it's incredibly dangerous in fact about 12 years ago over our big manufacturers here in town fella did that he put a he put a shaft about four feet longer five feet long in there and started working on one end and he heard a whirring noise what is that worried noise so you went and looked around the back of the lathe and that shaft had bent and it hit him on the top of head and killed him so I don't mean to scare you but just use your common sense if you've got a one-inch diameter material you could probably stick it out a foot or so but if it's a small diameter or something like this three-eighths you'll actually hear if it's contained within within the spindle it's okay and you may even hear some rattling it's probably okay but just be really careful of that that's that's one source of lazy lathe accidents is the extension of that curl the other thing is when you approach the lathe we're talking about this about making sure some low also make sure that this turns and because if you if you have it in a if somebody had left it in the feed for instance it wouldn't turn the same either way it would it would lock them make sure that this move and make sure that moves make sure every move everything moves freely before you fire up that lathe and after everything is okay you've got your truck on there that you want then you can go ahead and put your your badge and the it's slot turn on the machine and go I'll give you an idea of how fast this thing starts up Oh set it for let's say 600 rpm I think we have a 600 it's a c3 so I set this in C I'll make sure the gauges and three there we go now at this point I can I really should have had the power turned off while I was doing this it by the way but anyway and give you an idea how fast that starts up this is almost instantaneous so you see if ya Chucky in there it could really be disastrous it's our other lathes will start up very slowly this is also why when we leave the lathe we always put it back in a slowest speed turn it off and put it in the lowest speed and that's because if something else up something in there and maybe out of balance or maybe you know a little loose of Chuck or wherever and they're expecting it to start up slow and it starts so fast it could throw the peace out so anyway that's about it for them for the lathe oh one of the thing the digital readout will cover that next now one thing that we have on this eswe that's really nice is a digital readout and the digital readout it's for two axes the x-axis is the cross speed I'm moving the right now as I'm coming across and you can see the digital x-axis change now this is measuring diameter this little knot right here in the case diameter if I press the 1/2 on this machine it will change to radius sometimes you want radius but generally you want diameter on the cross feed now the longitudinal feed it's called Y right now I'm moving toward the Chuck and you see number goes down toward the Chuck and to use this typically let's keep it simple right now these two are used to zero out so I can I can come up to my part touch on the part and zero these two out now I know where I'm at and need to take off another thirty thousands this last digit is ten thousandth and I believe this axis it would be there we go in four tenths of a thousand increment and on the longitude unless two tenths the reason is twice as much on this is because we're taking off diameter put it in radius Modi be radius and there are some other functions on this there's a booklet up here that's frankly a little difficult to read but it's in Chinglish but but you can figure out some of these other things that you could do a lot of it is about operating this de jure route on a mill on a milling machine we probably wouldn't need inclines and that sort of thing but anyway it's a nice add-on it takes a lot of the guesswork out and allow you to work to a very high degree of precision so that's really nice anyway I hope you enjoyed the overview of this machine and I hope it's hopeful helpful to you will certainly be helpful and becoming certified to use this machine here at the maker barn and perhaps those youtubers are interested in purchasing one of these machines that would be helpful to them as well they get to see a little bit more of the machine well thanks for watching you

Channel: MakerSpace

Views: 48,327

Keywords: g4003, makerbarn, lathe, machine shop, makerspace

Id: nHGFUauwwLo

Length: 28min 28sec (1708 seconds)

Published: Sat Jul 28 2018