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Indexing how to use a dividing head mill
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INDEXING HOW TO USE A DIVIDING HEAD MILL
INDEXING HOW TO USE A DIVIDING HEAD MILL
INDEXING HOW TO USE A DIVIDING HEAD MILL
INDEXING HOW TO USE A DIVIDING HEAD MILL
1903! You've got to be kidding! Well, not much has happened to a 360 degree circle over the last hundred years or so. We still measure degrees the same way, there are still 360 degrees when you go all the way around and each one of those degrees is still divided up into 60 minutes and each one of those minutes is still divided up into 60 seconds! Indexing, the use of a dividing head hasn't changed a bit!
Using a dividing head was always a mystery to me. It just looked so complicated! If I'd had this information when I began doing machine work many years ago, lots of projects would have been easily within reach that were not even attempted.
Most of this booklet from 1903 covers indirect compound indexing. You'll learn about construction of the indexing mechanism, calculating runs of the index crank, selecting the index circle, using the sector, using index tables, calculating the moves for compound indexing, and simplifying the moves. Sounds complicated, but it's really not. Once you get to know what the words mean, it's quite straightforward.
The second section covers the use of the spiral head which at that time was an innovation marketed by Brown & Sharpe.
A final section covers fractional indexing using two indexing plates and special spiral head. Three more pages of indexing tables are provided.
Some of the information will be quite useful to you. Some may not, but even so, what you learn will expand your knowledge to allow you to make more creative use of the dividing head you do have or to passionately desire one if you don't. Loaded with valuable info!
Paper cover 5 1 /2" X 8 1 /2" 31 pages.
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