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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building the gingery dividing head – The Home Machinist!

Last edited dividinf norman on Sun Mar 19, 3: I used this to make an tooth worm wheel. The solution is to use a double-threaded or double start worm gear. This is dictated by a number of factors including the I. I bought several popular sizes. 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?

Just what we want. The leak happened because I didn’t plug a vent hole good enough.

The Home Machinist!

I’d kept some of the thrown away Moltrecht ISBN v. It was made on the lathe at 5 TPI with the lead screw engaged with the thread dial at 1. In this design following Gingery the reduction is Once you get out of the area of straight cut spur gears you pretty well have to have a milling machine that you can gear a dividing head to the lead screw in order to mill a gingeery.

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.


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

We switched to turbine meters and all of the spare parts from the worm gear driven meters went into the trash. The Frame The frame is held to the right end of the indexer casting by a couple vingery bolts after drilling and tapping the casting. The above picture shows the major parts of the finished project.

These are the 2 parts that leaked out no big deal I’ll just remelt them. 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. You could, of course, choose to work with any reduction, but Each single thread has the desired lead of 0. Now I’m trying to find the gears at a low price. I’d have to make it by either cutting a hob or using a tap to cut the worm wheel.

The spin indexer spindle O.

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. A site dedicated to enthusiasts of all skill levels and disciplines of the metalworking hobby.

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 5C spindle was mounted between centers to start the blank sizing for the worm wheel.

I have the start of the dividing head cast and machined here’s a couple of photos. The indexer has served well for jobs where the divisions come out to even 1-degree values. The indexer is solidly built and accepts 5C gingerry.

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. The photo above shows the side of the modified spin indexer with the hand crank and one of the fraction plates described in the Hsad book. The photo to the left shows hewd 20 tooth gear I cut using the dividing head and my vertical milling machine, just to prove to myself that it works!


The shaft carries the hingery plate via the plate holder and worm gear. If we use a simple worm gear with a pitch of 0. The worm gear is Delrin. A good discussion of dividijg threading can be found in chapter 13 of the book Machine Shop Practice, Volume 1 by K. I don’t think Sherman or Mr. The worm wheel, worm carrier, and fraction plate holder are PVC.

I’m now working on the plates so I’m getting close to having this project done. 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.

The main frame of it is done. 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. Thus the blank was trued and sized right on its spindle.

Now we need to solve a problem: Board index All times are UTC. Peabody are around nor is the wayback machine working, it may need the same gears I need.