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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We switched to turbine meters and all of the spare parts from the worm gear driven meters went into the trash. I used this to make an tooth worm wheel.
A few years ago I bought an Enco spin indexer. But the pair has a 0.
Gingery dividing head patterns | _ Home Made Tools | Pinterest | Milling machine, Tools and Milling
If we use a simple worm gear with a pitch of 0. 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. It rotates within the worm carrier by which it is attached to the frame. The worm gear is Delrin. 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. I often use a computer printout of a hole circle or degree wheel taped to the Gingery fraction plate to adjust strange angles.
I’ve found them in Mc Master Carr catalog. I hope to be able to cast most of the patterns today. These patterns are made from scrap wood and MDF coated with varnish and waxed. The indexer has served well for jobs where the divisions come out to even 1-degree values.
The Worm Wheel The required lead for the worm wheel teeth for my setup is at least 0. But might be worth a try. The shaft carries the fraction plate via gingeryy plate holder and worm gear.
The problem with spin indexers is that they limit your choice of angle.
The Home Machinist!
The 5C spindle was mounted between centers to start the blank sizing for the worm wheel. The Gingery design is most useful as a rotary table.
Thus the blank was trued and sized right on its spindle. I’m now working on the diivding so I’m getting close to having this project done. In this design following Gingery the reduction is The frame is made of a flat iron plate. 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.
I don’t think Sherman or Mr. The frame is held to the right end of the indexer casting by a couple of bolts after drilling and tapping the casting.
The spin indexer spindle O. 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 gihgery single tooth. The following photos show a few other views of the finished project and a 20 tooth gear cut using it. I bought several popular sizes. Every day I ask myself, “What’s the most fun thing to do today. I then fastened the blank to the end set collar with 3 screws at degrees, slipped the thing on the 5C spindle mounted it on the 7×12 lathe between the 4 gingeey chuck on gingwry end and a 60 degree center held in an appropriate collet hiding inside a socket spacer on the other end.
The Worm Gear Now we need to solve a problem: Just what we want. The main frame of it is done.
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 photo above shows an end view of the dividing head with a collet, the fraction plan holder, a plate, and the hand crank. The dark area in the picture is the groove of a single thread. Since each thread on the worm gear has a lead of 0.
Constructing a Cheap Dividing head.
building the gingery dividing head – The Home Machinist!
Each single thread has the desired lead of 0. 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 gjngery the housings. The worm wheel has 80 teeth and a pitch of 0.