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Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

Dividing Head

by Rimesy Feb 28, 2016
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Hi ! Do you may have the original Inventor or Step-Files for me ?

if ever you do revisit this ill be waiting to download and print it just to see if it works well enough to use! great work, keep us updated.

Hi ! i wanted to know if maybe you could say the size of the bigger gear ? cause i cant seem to find much gears here so im trying to use it but i need a smaller one with the same gear size (smaller but with same spacing) if you could help i would be thanked !

For those like me that have no idea what this is for, wikipedia says :

An indexing head, also known as a dividing head or spiral head,[1] is a specialized tool that allows a workpiece to be circularly indexed; that is, easily and precisely rotated to preset angles or circular divisions. Indexing heads are usually used on the tables of milling machines, but may be used on many other machine tools including drill presses, grinders, and boring machines. Common jobs for a dividing head include machining the flutes of a milling cutter, cutting the teeth of a gear, milling curved slots, or drilling a bolt hole circle around the circumference of a part.[2]

The tool is similar to a rotary table except that it is designed to be tilted as well as rotated and often allows positive locking at finer gradations of rotation, including through differential indexing. Most adjustable designs allow the head to be tilted from 10° below horizontal to 90° vertical, at which point the head is parallel with the machine table.

The workpiece is held in the indexing head in the same manner as a metalworking lathe. This is most commonly a chuck but can include a collet fitted directly into the spindle on the indexing head, faceplate, or between centers. If the part is long then it may be supported with the help of an accompanying tailstock.

Hmmm, why didn't you just tilt the axle of the worm gear through 45 degrees? the index plate could just fasten to the end of it and you would have saved some components? 2 gears and a small stub axle would not be required and the whole thing would be simpler.

Just curious to see if you had a reason for doing it this way, good effort though.

Yeah in hindsight that would have been a simple solution. This was my first attempt at designing a dividing head and I also had to learn the cad software whilst doing so. I also joined the challenge late so it was all a bit rush rush. If I were to revisit/ redesign this that may very well be the way I go. You could call this a first prototype. And hey that's one of the many good uses of a 3D printer :)

For a first attempt mate you did really well, I guess when you think about it we are all still learning.
All part of the joys of 3D printing.
Keep up the good work.

Yes I am certainly still learning!!! I find its a lot of trial and error more so than being able to refer to a guide or reference material

I had an idea how this works, but found this video for anyone who doesn't understand. Nice, I think I need to print one of these. https://www.youtube.com/watch?v=MRA6d0fPqgI

Comments deleted.

Thanks a lot but please bare in mind this was as a teaching aid more so than a practical piece of machinery. As stated its a work in progress and would need finishing to do real world work. If there's enough interest I may redesign or revisit this as I've had time to get to learn both the cad better and my printer. I've also learnt from the many mistakes etc I made during this project.

Whats the point of the spur gear on the worm? I won't turn the worm. Nor does it interact with bevel-gear/dividing head.

There isn't a spur gear present. Its a worm and wheel. The worm turns the worm wheel which in turn turns the spindle.