
Indexing head calculator. The worm shaft carrying the crank has a single threaded worm which meshes with worm gear having 40 teeth 40 turns of the crank are necessary to rotate the index head spindle through one revolution. Your dividing head may be equipped with dividing rings having different numbers of holes to those shown here. How to use the dividing head and. Dividing head calculator is a simple program to help mechanical engineers and students.
Make sure you push in the pin that locates the index plate on the dividing head so the plate can movenow when you turn the indexing pin the gear ratio between the spindle and the worm will advance or reverse the index plate the required amount to give you 71 teeth. Index plate hole calculator. The ratio below describes how many turns of the handle makes the table rotate one full revolution. I know that you divide 40 by 7 and get 571.
For indexing the dividing head spindle is turned by the index crank. All you need to do is enter a value for divisions and click the calculate button. The figure is shown. The dividing head calculator is based on a standard 401 turns ratio.
Designed to help his father with the calculations to cut varying number of toothed wheels. This is an online calculator to calculate what indexing plate to use and number of holes to skip for a given number of divisions. This calculator can be used for both rotary tables and indexing heads. An indexing head also known as a dividing head or spiral head is a specialized tool that allows a workpiece to be circularly indexed.
40 1 dividing head and i want to divide 7 times then i turn handle 5 turns and 35 holes on a 49 hole plate. I am working on a dividing head calculator phone app and need some help with the math. So i am guessing that is the 5 turns but what math do i need to do to get the 35 holes on a 49 plate from the 71 or am i going about this all the wrong way.