GINGERY DIVIDING HEAD PDF
The Dividing Head & Deluxe Accessories [David J. Gingery] on * FREE* shipping on qualifying offers. The Dividing Head is also known as book 6 . The goal of this project is to build a dividing head from an inexpensive spin indexer and parts borrowed from the Gingery dividing head project. The main. I’m getting close to finishing a dividing head that is pretty close to the unit prescribed in Gingery’s Dividing Head and Deluxe Accessories.
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Gingery dividing head patterns | _ Home Made Tools | Pinterest | Milling machine, Tools and Milling
Since each thread on the worm gear has a lead of 0. The above picture shows the major parts of the finished project. If we use a simple worm gear with a pitch of 0. The leak happened because I didn’t plug a vent hole good enough. I have 5 parts in there Some times things don’t always go good I had 2 of the patterns leak out of the bottom. The indexer has served well for jobs where the divisions come out to even 1-degree values.
The idea of the dividing head is to accurately reduce a large rotation of the crank as measured by the fraction plate into a small rotation of the spindle. The worm wheel has 80 teeth and a pitch of 0.
Constructing a Cheap Dividing head. You could, of course, choose to work with any reduction, but I started machining the steel parts and will post photos later. Peabody are around nor is the wayback machine working, it may need the same gears I need. The worm gear is Delrin.
I’m not sure if more tpi or less tpi would be the best way to go. The required lead for the worm wheel teeth for my setup is at least 0. You aren’t going to make a gear with a file and a dremel tool and a lathe isn’t a machine shop, only one machine tool. Heaf you decide on a gear ratio, you have to select the pitch so the gears are a suitable size to fit in your housings.
The Home Machinist!
A few years ago I bought an Enco spin indexer. Board index All times are UTC.
I used this to make an tooth worm wheel. The dark area in the picture is the groove of a single thread. Every day I ask myself, “What’s the most ggingery thing to do today.
On the left side is the unfinished casting that will be the index plate carrier. Moltrecht ISBN v. The shaft carries the fraction plate via the plate holder and worm gear. We switched to turbine meters and all of the spare parts from the giingery gear driven meters went into the trash. Dividing heads are usually used with milling machines for making gears, reamers, etc.
The price of these gears is really cheap considering the skill and equipment required to make a worm and worm gear of the class required by a dividing head. The solution is to use heaad double-threaded or double start worm gear. This is fine for when one does not want to make and drill a fraction plate.
The following photos show a few other views of the finished project and a 20 tooth gear cut yingery it. It was made on the lathe at 5 TPI with the lead screw engaged with the thread dial at 1. That is what a worm is and the gear that it runs with is a worm gear and that also has a helix angle to work with the worm. I hope to be able to cast most of the patterns today. A site dedicated to enthusiasts of all skill levels and disciplines of the metalworking hobby.
Anyone know where to find these gears at that price?
I have the start of the dividing head cast and machined here’s a couple of photos. These patterns are made from scrap wood and MDF coated with varnish and waxed. Just what we want. Idviding I’m trying to find the gears at a low price. I then fastened the blank to the end set collar with 3 digiding at degrees, slipped the thing on the 5C spindle mounted it on the 7×12 lathe between the 4 jaw chuck on one end and a yingery degree center held in an appropriate collet hiding inside a socket spacer on the other end.
The photo above shows the side of the modified spin indexer with the hand crank and one of the fraction plates described in the Gingery book. The following photo should give a pretty good idea of how things go together. I’m really not sure I understand everything I know about this Greg Hornbostel. It rotates within the worm carrier by which it is attached to the frame.
I belileve that after you get done with that section you will, if you are a machinist to begin with, be able to make this gear set, if gihgery have the machine tools to begin with, which you don’t as you will need a dividing head to manufacture any gear.
I’ve found them in Mc Master Carr catalog. The 5C spindle was mounted between centers to start the blank sizing for the worm wheel. The Frame The frame is held to the right end of the indexer casting by a couple of bolts after drilling and tapping the casting.