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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A site dedicated to enthusiasts of all skill levels and disciplines of the metalworking hobby. A less expensive alternative to a dividing head is a spin indexer, which can also be used to rotate work through a small angle. Thus the blank was trued and sized right on its spindle. The indexer is solidly built and accepts 5C collets. The required lead for the worm wheel teeth for my setup is at least 0.

The frame is held to the right end of the indexer casting by a couple of bolts after drilling and tapping the casting. The problem with dividing heads is that they tend to be expensive. The main frame of it is done.

The leak happened because I didn’t plug a vent hole good enough. I’ve found them in Mc Master Carr catalog. I don’t think Sherman or Mr. A dividing head is an accessory for accurately and repeatably rotating a piece of work through a small angle, for example to rotate a gear blank by the angle of a single tooth.

building the gingery dividing head – The Home Machinist!

The worm gear is Delrin. Moltrecht ISBN v. The Worm Gear Now we need to solve a problem: Hezd 5C spindle was mounted between centers to start the blank sizing for the worm wheel. Just what we want. The problem with spin indexers is that they limit your choice of angle.


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. 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. If your housings are sized according to the plans, you have little or no leeway to change the gears, you need a 40 tooth gear and worm of a pitch that fit the housings. I started machining the steel parts and will post photos later.

The following photo should give a pretty good idea of how things go together. A few years ago I bought an Enco spin indexer. Last edited by norman on Sun Mar 19, 3: Since each thread on the worm gear has a lead of 0.

The Home Machinist!

The worm wheel has 80 teeth and a pitch of 0. The worm wheel, worm carrier, and fraction plate holder are PVC. The solution is to use a double-threaded or double start worm diividing.

I hope to be able to cast most of the patterns today. This all of the patterns I have made,only pattern left to make is the indexing plate pattern. But might be worth a try. The photo above shows an end view of the dividing head with a collet, the fraction plan holder, a plate, and the hand crank.


I’ve toyed with the idea of making the gears myself but I don’t know if I can as I do not know how to cut the duviding to the right shape the worn is a 12 pitch and I know that 12 tpi is not the same, any ideas on that?

I’m now working on the plates so I’m getting close to having this project done. The main advantages of this fingery, from my point of view, are that the large spindle bore of my spin indexer allows it to use 5C collets, and that the fraction plates and cranking handle from the Gingery dividing head can be used with the new unit interchangeably.

I really encourage you to read a few of these old books and in the process you will probably find out that most of what “Dave” has been selling to all of you is actually free and really easy to access now that we have the intenet and the ability to download ‘out of copyright books’.

It rotates within the worm carrier by which it is attached to the frame.

Gingery dividing head patterns | _ Home Made Tools | Pinterest | Milling machine, Tools and Milling

The spin indexer spindle O. On the left side is the idviding casting that will be the index plate carrier. Dividing heads are usually used with milling machines for making gears, reamers, etc. I’d kept some of the thrown away