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Video instructions and help with filling out and completing How Form 8815 Adjusted

Instructions and Help about How Form 8815 Adjusted

Hey guys Joe paisans can here with advanced innovation saying want to say thank you to everybody that continues to subscribe and comment and leave me the thumbs up awesome a couple of videos back I showed you how to precision indicate a part in a three jaw Chuck and the primary objective on that video was to tell you that you must establish square before you establish concentric it was very important while I got a lot of feedback on that one and a lot of the same type of comment and what it boiled down to was hey guy we don't have an adjustable Chuck so although we can get the whip out of our part and we can get the part to run square with the machine it's still out of concentricity when we get there so today I'm going to take you over to the lathe and I'm going to show you no matter how bad your lathe is you can get apart to run fairly true if you're willing to just take your time and do a little bit of homework before you do it alright so let's take a walk over the machine two steps behind me I'm going to reposition the camera here in a second and I'm going to show you and you're going to have to take my word for it that I am going to throw that three jaw Chuck so far out of alignment that concentricity is just never going to happen but I'm going to show you how to make it happen alright let's take what all right guys first thing I'm going to do is to throw the Chuck body as far off the center as I possibly can and I'm going to look for a continuous surface to do that so I've slipped the machine out of gear I don't want to pick up on the track or bounce a crust here so I'm going to look for a nice in between and right there behind the jaws is usually a good place to do that so let's set the indicator in there see what we got my truck body's about tooth out I'm going to loosen up all my adjusting screws I'm going to take screw number 110 I'm going to tighten it going to go to screw number three which is 180 degrees on the other side and make sure it's not making contact which it is not so I'm still going to tighten it down till I feel it's pretty secure what you did I'm going to take two and do the same thing well that's going to do is just pull it in a small diagoing to go to four make sure that's not touching which it is not okay so one or two are really tight I'm just going to Snug three so it doesn't come flying out of there and I'm just going to bump number four so that doesn't move either okay let's take a look at how the Chuck is running all right well that's more like it you know what minus six and a half plus six and a half Thirteenth out that's probably more like something you'd find on a home shop or an old machine let's relocate the indicator and put a part in the Chuck tighten it down and see how bad it is okay now for sake of this demonstration I'm going to use a half inch drill blank I'll reposition my indicator let's see how bad this runs hopefully it's really terrible that would be great for this exercise that's awful huh all right we're about 15th out of concentricity let's see if it's straight yeah we're pretty good 15th out now if you put a part in it was 15th out you can take a lot of time and you could shim your jaw's but every time you open and close your Chuck you'd have to worry about where that shim is and where it went let's see if you can get a better look at that indicator okay that's a solid 14 and a half 15th out there's many ways to overcome this naturally you could put soft jaws in if you're using a piece this small chances are you'd use a collet anyway but if you don't have Kaulitz and you're not going to worry about that let's see how we can fix that with this particular chart and I can promise you I'm not going to move the adjustment on this Chuck for the duration of this exercise okay go get yourself a piece of scrap stock - I would say at least three to four times the diameter of the part that you're going to hold or the diameter that you're going to locate on stick it in your machine if this is a part that has any kind of other features that you would want to locate from you can actually bore it into the part into this piece of scrap for a locator feature on your depth as well but what I'm doing just to show you it can be done I'm not going to worry about that okay I'm going to spin this hopefully you can see that it's still terribly out of concentricity which it is going to face since we're working with half-inch stock and you know we're going to punch a half-inch hole in here I'm going to start with a 7/16 drill there's a reason for that stay tuned you you all the way through with your whole very important I'm going to deeper this part flip it around and face it these have a clean slug still means nothing on the final product okay at this point before you take it out grab a magic marker a sharpie marker a wax marker or anything you can grab that'll write on it and mark where your jaws are.

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