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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But might be hwad a try. 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.
Gingery dividing head patterns | _ Home Made Tools | Pinterest | Milling machine, Tools and Milling
These patterns are made from scrap wood and MDF coated with varnish and waxed. It was hewd on the lathe at 5 TPI with the lead screw engaged with the thread dial at 1. A good discussion of multiple threading can be found in chapter 13 of the book Machine Shop Practice, Volume 1 by K.
The white one I tried some cheap spray paint on it just to see how it would work for a finish I think the varnish works better. Each single thread has the desired lead of 0. That is what a worm is and the gear that it runs with is a worm gear and gingry also has a helix angle to work with the worm.
The problem with spin indexers is that they limit your dividin of angle.
building the gingery dividing head – The Home Machinist!
Moltrecht ISBN v. I bought several popular sizes.
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.
The main frame of it is done. Dividing heads are usually used with milling machines for making gears, reamers, etc.
I hope to be able to cast most of the patterns today. The main advantages of this approach, from my point divicing 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.
Board index All times are UTC. The worm gear is Gingedy. In this design following Gingery the reduction is The required lead for the worm wheel teeth for my setup is at least 0. The photo above shows an end view of the dividing head with a collet, the fraction plan holder, a plate, and the hand crank.
gungery Last edited by norman on Sun Mar 19, 3: I often use a computer printout of a hole circle or degree wheel ginfery to the Gingery fraction plate to adjust strange angles.
I wonder how well a home made worn and worm gear would work if by chance I could get the ratio at 40 to 1? The problem with dividing heads is that they tend to be expensive. The frame is held to the right end of the indexer casting by a couple of bolts hwad drilling and tapping the casting. The dark area in the picture is the groove of a single thread.
The indexer is solidly built and accepts 5C collets. The following photos show a few other views of the finished project and a 20 tooth gear cut using it.
The Home Machinist!
I’m now working on the plates so I’m getting close to having this project done. Peabody are around nor is the wayback machine working, it may need the same gears I need. The leak happened because Hed didn’t plug a vent hole good enough. Anyone know where to find these gears at that price? Every day I ask myself, “What’s the most fun thing to do today. The above picture shows the major divixing of the finished project. If we use dividihg simple worm gear with a pitch of 0.
I used to work in the oil divlding and some of our meters had the worm gears in them of different types and sizes wish now I’d kept some of the thrown away parts now. The Worm Gear Now we need to solve a problem: A less expensive alternative to a dividing head is a spin indexer, which can also be used to rotate work through a small angle.
I’m not sure if more tpi or less tpi would be the best way to gingrey. The spin indexer spindle O. On the left side is the unfinished casting that will be the index plate carrier. 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 you have the machine tools to begin with, which you don’t as you will need a dividing head to manufacture any gear.
This is dictated by a number of factors including the I.