What Makes It Work #27 Magnetic Indicator Base tubalcain

howdy once again this is tubal-cain you you tube shop teacher and this time with episode number 27 of my what makes it work series and I decided some time ago you might have seen it in one of my auctions videos where I came home with a box and it was just loaded with indicators and indicator parts so at that time I laid one of these aside and decided there was no stem on this anyway that I would show how it works and just take it apart and probably end up throwing it away for the good of the cause but everybody has this type of indicator around their shop and I probably got six or eight of them including some steroids that are based on a little slightly different principle but for those you that wondered how these work and they're simple enough and possibly this does not warrant a full video but it's going to get one anyway but in the meantime as I was planning this of all things a man and I'll talk about that in the next video said I'm going to send you a no good type magnetic stand now that would be this kind would you be interested in showing how this works so in an upcoming video forget about the base because although bases magnets are the same I'll be talking about how this articulated arm works so watch for that alright now to the business of hand as you know this kind of a magnetic base has a switch on and all and it's not an electromagnetic so really what you're doing is just rotating the or reorienting the magnets in there or magnetic one in there and I had to take my pocket knife that they tried to or they did take away from me at the Grand Ole Opry I was quite mad but I got it back so I but I had to peel this off this is so cheaply made you know these are only ten or twelve dollars so that's at ISA but what's interesting here are the patent numbers if you want to look those up and I did specifically the second number there just go to Google and you can read all about these but before I talk about that any more all we have to do then is to remove these two screws and then this little diecast plate comes off by the way this is old enough to where it's made in Japan and this will come off that part is really kind of nicely made but I don't know why they have a plastic knob and all of these have plastic knobs except for this central brand that I have here and I think I have some other brands too maybe an older enco this is probably a pretty old one if it's a diecast handle but you know all the ones from overseas are plastic so you take the handle off and all that does is to rotate the magnet takes a little more leverage than that we are rotating the magnet stainless steel so now the magnets in the energized position and it's not energized and then and they really grease this up all right I got my pliers because there's quite a magnetic attraction here watch this almost like it's a solenoids and of course it's not electric so there it is I cleaned it up a little bit as a filthy black reason there so I will regress it before I put it back together this little spring here keeps it from hitting the bottom again that's just where the switch handle goes to orient it it's very very powerful magnet so that's all there is to these things just a matter of turning the magnet one way or the other and in the patents information they talk about lines of flux and all kinds of scientific things because I guess that's how they got around the patents or make a patent that's slightly different from others because everybody and his uncle is making these and I don't know about the patents but the patent applicants here our Japanese but there is a good picture of it and you can see pretty much what I showed you there and they're showing the north and south pole and there's about three or four pages of legalese and I looked up several others too and they spend quite a bit of time and pictures talking about all the different lines of course and all that with magnets so that that's a graph of how the magnet the attraction is turned on and off probably not something that most people wanted to read about but that bottom number there is the patent that I just showed you now those are US patents but the this patent you know they were Japanese names that I cannot pronounce here's a magnetic Chuck a relatively small one off of a surface grinder and if you ever wondered how those work it's really a very similar deal to what I've shown you here however in this small Chuck you can see that there are what is it one to five magnets in there and they're all being turned or oriented at the same time by that lever on the larger ones you will see many more poles or many more magnets and the more magnets are the the more the the attraction for larger pieces that won't get thrown off on a grinder also some magnetic surface magnetic Chuck's on surface grinders are electromagnetic pulse e in electrical switch whether than a mechanical lever type of switch so in effect what we're doing here is demonstrated by this bar magnet is just rotating the magnet 90 degrees only this is the magnet now there may be some of you out here that are not familiar with what these are what the purpose is but we put a dial indicator on these make sure you a complete one here and we would indicate something in on a lathe or other machine this allows us to fasten on to the Machine and different onto the bed or the carriage or wherever we're fast in it and then also loosen it up now this is going to attract chips on the lathe so it's very easy to turn it off and clean the chips off so and here's one that can be mounted in two different positions well that's it that's all the rest of this I'll put her back together I'm going to put a little grease on here first and reverse the process as you watch the people as you watch me take it apart hope you liked the video be sure and watch the upcoming one on the articulated arm which will be number 28 this is tubal-cain saying so long for now thanks for watching you

Channel: mrpete222

Views: 158,414

Rating: 4.8275862 out of 5

Keywords: starret indicator, noga indicator base, tesla, bridgeport mill

Id: zsrxzkbKnkc

Length: 8min 37sec (517 seconds)

Published: Sat Aug 12 2017