Monday Night Meatloaf 132

[Music] ox tools is my name and meatloaf is my game for those of you that are new to the channel i'm tom the host and meatloaf is a mixed bag a collection of uh kind of engineering and science related subjects sometimes there's machining content and sometimes there's not today we got a bunch of cool instruments to look at a couple of cool books um some pretty neat stuff so there's usually something for everybody in here and it's usually pretty entertaining the the troops really like it so let's check it out all right this next one is is a kind of a combined um uh ebay acquisition uh show and tell and a public service announcement i guess uh i would call it so what we got here is we got some gauge blocks here all right these are uh square or hoke h-o-k-e type uh those are i i kind of prefer these myself um i like this style although i have i have both um and then we got a little piece of granite here we got this guy here and then we got some precision flat stones here so where do i start let's uh let's take a look at uh at this thing first so this is the thing i got off uh off ebay here and actually a viewer turned me on to this he saw the listing and uh it was mislisted and um um and then he pointed me at it and then i bid on it and got it and i don't quite remember what i paid for it so there were some other bidders so i apologize if uh i out i outbid you but uh so what this is is this is a gauge block stone okay and it's it's very special it's serrated it's made out of a particular material and it's lapped extremely flat okay and it works and behaves similar similar notice i'm using that word to the precision flat stones okay the difference is it's a lot flatter okay and it's appropriate for deburring and kind of uh uh reconditioning um um gauge blocks so um you can rub your gauge blocks on here if they if they don't want to ring together anymore um which is common they get little nicks and burrs and disparities on them that you got to do something with in fact you see this black stuff on here is stuff that's coming off of this gauge block right so give it a little rub there okay and now these are i picked these because they're not in very good shape these are just some that i got with a with a beater set and you know and i picked those on purpose um now this is a similar thing here to this um but it's made by do all uh and this is a gauge block stone here although the label is missing off of it or it came off and you and you do the same thing with this right you basically rub your gauge blocks on here and knock off those disparities now that's precisely the function of precision flat stones too as they're nice and flat and and that's what they do and that's why they work so well is they knock off these little up stickers and and shear everything off nice and flush however these are not as flat as this and now this is me talking this is tom um you know and i've heard some comments about this and seen some things on the web uh where people are are recommending that you are saying it's okay to do your gauge blocks on precision flat stones so it just kind of depends what you're doing um my recommendation is that you don't do it you get something like this or something like this that's designed for that purpose these are designed for a similar purpose but they're just not as flat and um so i would the public service announcement is i wouldn't do your gauge blocks on flat stones okay so other ground flat these are just done on the surface grinder typically now these mine happen to be lapped but um the the commercially available ones are just double disc ground or their diamond ground they're not as flat as a gauge block okay so what you really want to be doing is rubbing your gauge block on something that's as flat as a gauge block okay that's the idea uh and that's what makes it work so these are just not as flat okay they have little ripples in them and bumps and whatnot and you would probably if you did it aggressively or frequently or whatever you would uh compromise your uh your precision measuring gauges so so anyway let's forget that okay let's quit talking about that and um but anyway this is a gauge block stone and the idea is that um when you're when your gauge blocks cease to ring like as so right yeah it's not even ringing that's well let's this is going to be a miracle if we can make this thing ring so let's let's give it a try here let's give it a a good uh good once over here and i got a little bit of pressure on this and this is on some foam here so that it can kind of seek a center here and you notice i'm coming off the edge and kind of using the whole the whole stone there and polluting it nicely all right all right let's give it a skin wipe let's see if we can make this ring now maybe yeah that one's probably too far gone let's try it again here let's give it a little more oh actually i should probably probably do this one too here let's do that all right i think it was that side wasn't it oh crap i don't remember now yeah it's not going to go you can kind of feel it that it's not going to go yeah i think these are a little a little too far gone i don't think that's a it's not a hard ring but uh okay it wasn't too bad okay anyway uh well you can see that that it kind of works even with some that are uh uh not in very good shape so uh so gage black stone this is made by starrett uh unfortunately they don't give these away they're pretty expensive uh there's two varieties um i do not remember the uh this material here on this one i don't know if it's borizon or something else some kind of ceramic so okay this next one's kind of cool um this comes to all the way from germany um and this comes from a gentleman named uh stefan noor uh in berlin and the story was that he bought some some list of cabinets you know the the cabinets with drawers right and i guess they had a bunch of stuff in the in the list of cabinets he bought it at auction and um the bottom drawers of the uh the bottom drawers of the listed cabinets apparently had about 30 of these in them or i don't know how many 20 or 30 of them and um he wanted to to send some to uh some of the youtube creators in the united states but uh um you know sending all these individual packages uh was kind of daunting so he asked me if i would be willing to kind of forward these on to some of the other youtube creators and they said yeah sure no problem i'll help you out and um and he did so this giant box shows up and i i could not i could barely lift it it was so heavy and i don't know what that cost but uh stefan thank you very much and um so i've already sent out the other uh the other ones of these and um and you may have seen them on some of the other channels or the instagram if you follow some of the instagram accounts uh and what this is let's see if i can pull it out of here without dropping it on the uh on the deck here let's get this out of here so what we have here is it's a magnetic transfer block okay but it's it's uh for setting uh you can set angles with it right so we can put a uh we can put something on it like this right and uh we can set it up at an angle well that's not going to work but uh but anyway you get the idea right is it um you can if we wanted to put a chamfer on that for example uh you could set that up in the in the surface grinder on the magnet and clamp that down and then go ahead and grind that angle that is displayed here on the end right now um uh there's a couple manufacturers of these and uh the these particular ones here are it's uh sandox or whatever and you know it's some offshore thing but it's well made actually i'd have to say i haven't cleaned this one yet or kind of lapped it in but it's actually quite nice and so stefan thank you very much for sending that along and i'm going to clean this up and and put it to use now one thing you can do too uh there's another version of this made by a different company what they have is they have a couple of pins that are located at a known distance so you can actually use it kind of like a sign um you can use these two pins and stack blocks up underneath them or spacers to create an angle and use the the sign bar principles so if you have one of these you can you can kind of do that add that on so okay so that's the magnetic block now he sent me something else a little bonus gift here and we're going to take a look at that next so what we got here is this and uh so it didn't uh i didn't recognize this when i when i opened it up and um and and then it took me a minute to to figure out how to open it you know the this appears to be a pull on me uh kind of a button but that's that's not the case um what you do is you push on that it took me a minute to figure it out and so what is it what the heck is it so according to the side here this is a a a brake efficiency indicator uh it's got some british patent here it's made by small and parks p-a-r-k-e-s limited manchester and basically it's a little curved bubble level and what i think this is is this is to hang it up on some bracket or something like that somehow and so what i don't know is i gotta believe that you hang it up on some bracket and then and then you move this and you you zero it right um i'm trying to so that bubble's got some inertia in that fluid or whatever so somehow you um um you translate this into and it's got numbers on it um but i don't know what those numbers uh indicate right you know horsepower or foot pounds or newtons or i don't know what and then there's another scale on this side here that doesn't make any sense at all so if somebody out there kind of knows how you use these uh that would be great i did a little bit of poking around and i couldn't find anything on this um although i did see some um something similar for uh you know checking the attitude of a a jeep you know that's going off-road or something like that or four-wheel drive that's going off-road you know you can look at your your angle of the angle there um so i'm assuming it's some kind of inertial thing right where uh you jam the brakes on and then you're looking uh where the bubble's reading and then you you get some kind of insight or relative measurement uh you know as you adjust the brakes or um um you know change the brake shoes or improve the braking system or something i don't know it's a little pocket thing that came in a nice cool little uh velvet line box right and like i've said before things that come in velvet line boxes are usually kind of fun so so stefan thanks for sending that along maybe one of the viewers out there will school me on on how to use this properly and and maybe we can uh go for a ride in the car and jam the brakes on and see how it works so anyway thank you so much for sending all this stuff i know that was uh that was a expensive package to ship just because of the weight and i really appreciate it and so do the other youtubers thank you well it's that time of year again my buddy phil kerner sent me one of his uh his new calendars that he's got out and phil has been doing these um uh and i think he even calls them these boutique uh calendars about manufacturing and the trades uh for i don't know five or six years now i think but anyway he sends me one every year and they're always just wonderful to look at and uh i got some flags on here we're gonna we're gonna look at a couple things on here and uh if you want one of these calendars you can um uh you can contact phil there's a link in the description you can go check it out and buy a calendar if you want and uh and help uncle phil out so there's a man himself and his wife heidi and uh he wants to sell lots of calendars because uh heidi needs some new shoes so uh i'm just teasing okay so phil's kind of a serious guy so i got to be a little bit careful here okay so uh anyway i'm not going to show you all of them i've got uh otherwise i'd spoil the calendar for you i got some flags here so this one caught my attention here and uh because it's kind of a trippy set up here and it says uh checking at 24 degree angle so i would i would say that that is not the case in this picture i would say that he is setting a 24 degree angle just by the nature of what he's got in here and my clue is that there's no angle here and uh and it looks like he's going to cut this angle so this makes sense and he's got a a 20 degree block in here and a four degree block here and he's indicating this and and getting it set at 24 degrees so he can cut that okay that would be my guess now phil correct me if i got that wrong now this is a cool little setup here and there's a couple of interesting things here too so this is a this is a a vice uh and i you know what i think phil built this vice okay because it's got his characteristic uh painting of the uh of some of the uh non-precision surfaces there and uh there's a couple interesting interesting things to note here right so it's got a nice lead screw he's milled the hex on there so you can put a uh a spinner or a socket on there or something like that and then i caught this there's the nut and this looks like an acme if i had to guess looking at it um but there's the nut and it looks like there's a little tiny split in there and then you've got a a retention set screw here so my guess is that nut this bronze nut has a central groove in it or a flat on it or something like that that engages with this set screw and here's the bonus is when you drive that down and close that gap you can really control the backlash there so phil's one like me he's a fussy guy right and too much backlash there would just be like pretty annoying right so that's my guess so maybe phil will confirm that for us my theory there so okay so next one here um this is pretty cool i have a set of these and they are wonderful for checking holes like this because you can fit them up into the hole and uh and then measure directly with a with a micrometer instead of trying to do a transfer with a small hole gauge or a telescoping gauge or whatever so these you can fit up in there nice and firmly and what they are is they're tapered uh and then they have a rounded uh a rounded edge on them right so that they only touch the hole at the at the the peak of the of that radius there so uh they're really nice and they they're easy to use so if you find a set of those on ebay that's uh that's kind of a nice thing to have uh if you have to check a lot of holes checking holes uh you know is uh um you know with you know unless you got pins uh every pin under the sun or whatever so uh okay here's a pretty cool setup here uh this is kind of neat real field expedient deal here and um so when you have a part at an angle um and you need to you need to reference that corner right that theoretical corner maybe it's been filed off or chamfered a little bit but what you want is that theoretical intersection of those two planes right one way to do that is you take a round and and you you make it tangent with the other surface so with a little bit of math you can work out exactly where that theoretical corner is and then you can move over and poke a hole or mill a slot or whatever it is that you're going to do and with confidence that you've actually referenced that that theoretical sharp corner accurately so that's kind of a cool field expedient way to do that i have a a little edge finder that drops over a corner like that that does the same thing and but that's a cool way to do it he's got a little magnet there and then he just used a dowel pin and i think he just kind of held onto it so the edge finder didn't push it off so that's a that's a nice little trick right there phil and let's see here what's the last one here okay so yeah so there's his vice so he did make that vice okay and uh there's his handle and there's another shot of that uh that screw and then um let's see what was i gonna talk about on this page so you don't see these all the time this is a new bold grind it uh this is a a guy actually he's deceased now but he was down in florida and he made some very fancy indexers angular indexers angular draw dressing tools and these spin spin fixtures here but that's not what i wanted to talk about uh what i wanted to talk about was these little monkeys right here and what those are i believe is for inspecting flatness um and so there's a couple ways you can do that and some specifications call for one way or some allow the other way but in this case what uh what we're doing there's three of them you notice that there's three of them right so if you have a flat plate you spread these out and you drop the flat plate nut or set the flat plate on these and these are all very accurately the same length um and now you're supported on on three points so you can actually take an indicator and come up underneath and sweep that plate underneath and read the deviation so three points to find a plane right you can read that deviation and the requirement for this type is that they're supported on the same side okay they're as as you're you're measuring on right so you have to invert everything and that's why these are tall so that you can get that indicator up underneath and and access that whole surface i think that's what those are i've heard phil talking about that before so kind of interesting way or a different way of doing it well not different but just another way of doing it so anyway phil thanks for sending this along i'm gonna hang it up in the shop uh in 2021 hopefully this can be a better year than than 2020. um if you guys want a calendar from phil uh check out the link in the description and uh and show phil some love all right another book and everybody knows about this book here um machinery's handbook this is kind of the classic uh machine machinist text anyway this one came from urban ore in um in berkeley i went by there and i walked through there real quick and um uh found this uh i paid two dollars and nineteen cents for this so i kind of you know it's not like i don't have a copy of this but uh this is a you know somebody that doesn't have one you can just hand them one with impunity and uh and not worry about it you know for two dollars and nineteen cents right and i see these selling for nutty money um uh in bookstores and stuff like that 40 bucks you know stuff like that i mean you can buy a new one for that kind of money right now this one's kind of interesting because it's and you guys know me right i i kind of enjoy the history and my connection with the the people that have gone before me in this trade and uh and my connection with them through through tools and books and techniques and things like that so the the kind of the history and the uh um you know the personal connection there so let's crack this thing open here and um this one has uh i believe somewhere in the front here an inscription um and it's uh m mcnamara january and that's a 50 that's a 51 not a 21 which i thought was a 21 but then that doesn't make any sense with the 12th edition so m mcnamara january 1951 and this is a 1945 edition i think is what it was right there um so mr mcnamara um and let's see how do i even i don't even start this right well you know there was some correspondence in the in the book right okay so i didn't see any markings or uh um oh what was that okay i might not have seen that one okay so it's just a a piece of wax paper that's real old-timey old guy stuff you know they used to wrap their lunch in wax paper right and hardly anybody uses wax paper anymore anyway um there were some correspondence in here that made sense right now pretty sure they don't live here anymore and uh but this this kind of jives this is uh um somebody that's in their family and this is 1967 here and uh this was just in there as a bookmark right and it's got a cancelled stamp and a whole thing with a date which connects me with these folks here right and then um there is this bit right here and now all you youngsters out there probably never seen anything like this this is carbon paper okay and uh you know when we when i was a youngin and we had to make a copy uh you used carbon paper which uh you could lay in between uh two sheets of paper and you could you could write and the pressure would transfer carbon onto another sheet of paper right so you could get two copies instead of just pushing print again right so for those youngsters out there that that can't work a dial phone a rotary phone uh that's what the carbon paper is so uh kind of showing my age there right now what's interesting here is this has some stuff written on it and it has to do with mr mr mcnamara and apparently he was going through some health stuff and um uh this is some information uh from his doctor about uh uh some test results uh i i'm not gonna i'm not gonna share that stuff with you but it's on this piece of the carbon paper but apparently the tests were negative so uh that was good i guess um but right there these two little pieces of paper with this inscription in the front kind of bring me closer to this guy um i don't i don't know anything other than that about them i haven't looked them up on the web or whatever oh and this is uh san jose california so that that brings them into the area where this book was found right so this is this pretty far away uh but this is much much closer so anyway uh kind of a little little story there a little history i guess and a connection with uh one of our uh one of our workmates uh in the trade so uh and two dollars and nineteen cents pretty cool huh i thought it was what we got here is this is actually an interesting um study and design here and um it's something i had to work on this is part of my uh my nikon optical comparator and believe it or not what this is here is this is a it's a lead screw okay so this adjusts the um the long axis i'll just call it the x-axis uh on that on that particular machine but what we have here is this you know quote unquote screw that's really just kind of devoid of of any threads right so the way this works is in this little assembly we're going to take this apart so you can see the the inside of this there's a couple of bearings in here a couple of ball bearings like this and these are just you know r6 uh sealed bearings nothing no magical anything going on there but what they in fact you can see here they fit you know rather loosely right on this on this shaft and that's part of what makes this whole deal work and um so i'll i'll describe the operating principle to you and then we'll uh then we'll take this apart you can kind of see how it's set up in practice so what they do is they actually pitch these they pitch these at a at a slight angle much the same as you would see as an in feed to a centerless grinder for example so they have a wheel that's kicked at a little angle that that helps feed the piece through right well this little assembly here has got those bearings in it and it's let's see which side moves here oh it's on that's it's on the screw and this little knob and it's a little hard to see here okay look at this little edge right here and you see that it's moving in relation to that right so it's got a spring inside it and what it does is it is it it these against the shaft so that the corner of the bearing catches the edge of the shaft and and so it's kind of spring-loaded now it's not a positive screw so i some i imagine if you if you whacked it on the end or whatever it was it would still slide right but uh for the purposes of this kind of uh uh controlled motion it works really good so let me let me take this apart then we'll look at the inside of this and then what we'll do is put it back together and i'll go put it on the machine and actually maybe we can even uh we can even demo that right now okay so it's locked up let's see here i need to raise this up just a little bit so i can turn it all right i gotta turn it and there it goes and then when you unlock that now you can just kind of freewheel so it's like a a half nut kind of arrangement so if you want to do a rapid adjustment then you can do a rapid adjustment and then you can just lock it down and then now you have a fine adjustment that was actually pretty good demo okay let's take this apart and look at the innards of that that's so good all right so there's the innards of it this is the little uh the little uh i don't know the cam here that uh that that separates these okay and so i don't know if you should be able to see this here is if you look at those bearings they're in there at an angle right they're tipped they're tipped a few degrees and it's uh it's about three and a half degrees i think i measured it when i come on i measured it when i was uh reinstalling these bearings so they had to set these up at an angle like this so that i could push these kind of straight into the bore if you lay them like this and you're you're you know you're pushing them straight in which isn't really the the right way to do it so you gotta set it at a little angle there but um and in fact the the system wasn't working because the the edges of uh of these bearings were worn enough that that they weren't they weren't biting the shaft properly so once i replaced the bearings uh um you know that edge is crisp enough now that it kind of actually works and you can you can actually see a little bit here i just noticed this a little while ago there was some marks on this on this shaft um and it almost looks like a thread right well there's your there's your helix right there so what they're doing is they're they're pitching these bearings at an angle to one another that creates a helix angle and um and i can tell you because the the the nikon comparator has a dro on it that i can dial off a tenth um on the knob without uh without too much trouble so it's a it's a nice fine little screw so why am i showing you this well it's kind of an exercise in some design details right um you know here this is all very very inexpensive parts right and they've created a lead screw and a half nut system with nothing right with junk so you got a smooth shaft and you got some six dollar bearings right i think those were six bucks from mcmaster and a couple of springs right okay yeah there's some design work and then if you look here we've got this this uh this cam knob here right and what they've done this i thought this was pretty good so there's your your travel limit right and it's just a roll pin right it's just a roll pin so nice and simple but very positive and cheap and easy to produce right and it's just holes and some anodized aluminum plates so anyway nice simple little design nikon is pretty good with that i've worked on some of their stuff microscopes and comparators and things like that and they're very good at understanding what's important about a a particular design you know the really critical ingredients of it and then everything else they designed for cheap manufacture right so they kind of get it so and anyway so fun stuff so let's put this back together here um was i gonna what was i just thinking about here that goes in later so oh and uh i guess i just wanted to mention there's a dowel pin here and a hole here and that's that's the pivot point okay that is the pivot point of this whole this whole mess here so we'll stick that together pop that okay okay and then this is just a retention screw here and it kind of keeps the whole the whole shooting match together from falling apart on you and what they've done is they put a thread insert in there that's a little bit snug so what you can do is you can run this screw all the way down and and not bind up the mechanism okay that's all the movement we're talking about here it isn't much you know and then there you can see it moving uh in in there okay and then this goes in there and we're gonna set screw there it goes little set screw it's nice when you have all the tools already out so that adds some spring pressure to the let's see am i ripping the right end here no that's this is the end i want to move there it goes so now we're on the spring that's it's actually pretty good pretty good spring pressure okay and then mr knob goes on like so and now this i thought this was interesting is that uh the uh oops the the knob has an inch um size uh there we go an inch size uh set screw in it okay let's put it back together put on the machine all right so here it is on the uh on the comparator and it's as smooth as silk and then if we want to release it and then you can see that that piece kind of pivot away from there and that opens up the clearance and now i can just slide this and kind of do a coarse adjustment and release and now i'm back on the kind of phony lead screw so anyway it's just an interesting design to put in your your bag of tricks i guess i would call it if you need a a lead screw or you have to create a fast adjustment and [Music] half nut arrangements can be kind of tricky to do because the thread depth is so deep you have to actually release from the thread so the distance that you have to move is considerably larger than this so this is this is pretty uh pretty small movement i just think it's cool hope you do too you

Channel: oxtoolco

Views: 24,434

Rating: 4.9782844 out of 5

Keywords: Machine work, Toolmaking, Mechanical design, Nikon comparator, machinery's handbook, calendar, leadscrew, brake efficiency indicator, Sandox angle plate, magnetic transfer plate, surface grinder

Id: G1ZLQJMSUj4

Length: 37min 38sec (2258 seconds)

Published: Mon Dec 14 2020