INDEXER Rotary table 
One of difficult things in constructing things is cutting or making circles. Hopefully this will help some of you to invent some new ways of doing things. Adding circles, arcs, or curves to your next project may make it a winner.

This instructable shows you how to make your own indexing table to drill hole patterns, to cut out circles, and to cut many other things related to a circle. It allows you to set the index degrees by setting some push buttons. As an example setting it to four divides the circle in four 90 degree segments. This would allow you to drill a 4 bolt hole pattern or cut an arc 90 degrees in a piece of material.

If I won the Shopbot challenge I would use the machine and software start a small business making signs, templates, furniture, jigs, fixtures, engravings and parts out of wood and plastic. I have put together my own cnc mill drill but feel I need something bigger and more accurate like the shopbot to make it work. The autocad software completes the package for anyone to start a small business. Thank you to Instructables, Shopbot, and Autodesk for a great contest.


Features of index controller  

Adjustable index degrees

Adjustable index speed

Single index by run button

Single index by proximity switch

Continuous run button

Brake output

Time lapse camera output

Index count indicator

Reset index to zero button

Index count increase button

Index count decrease button

Add 10 to index count button

Stop button

Self contained controller

Indexer can be connected to CNC computer control

Some Uses 

Cutting holes

Cutting wheels

Cutting round slots

Cutting arcs

Drilling hole patterns on flat surfaces

Drilling hole patterns on round objects

Cutting slots on round objects

Triming pipe ends

Time lapse photography

Panoramic photography


KiraThant4 months ago

Thanks for sharing this valuable information. It will sure help me with my projects.

gerry.hanley26 months ago

a prillant end result i wood love to get a coppy of the ladder please

for another progect

Constructer (author) 6 months ago

When you are ready to build and you have questions, let me know and I can help you through the process.

Yochanan296 months ago

What I want it to do is to have a sophisticated rotary position control by aiming a beam of light and/or fine positioning for drill bits. Honestly, I do not want to spend too much at the moment. I still need something concrete so that I can practice PLC coding while interfacing with real life applications. Thanks again.

Constructer (author) 7 months ago

I think the micrologix would work even better than the PLC I used. Make sure you get right PLC with the correct solid state outputs. The PTO function is controlled by writing values to its control registers. This allows you to control speed and number of steps. The code would be determined by what you want to do with the stepper. What do you really want the stepper motor to do? I can point you in the right direction.

Yochanan297 months ago

This is an extension to my previous comment. I believe using micrologix1100 can work for this application of interfacing with a stepper motor. The link below seems to verify that is the case:

http://literature.rockwellautomation.com/idc/group... This starts on page 130 of the pdf.

How would the code be written with a PTO instruction? Thanks

Yochanan297 months ago

I believe that an Allen Bradley Micrologix1000 or Micrologix1100 can work with the free RSlogix500 Micro-starter software instead of the PLC that is currently being used. Could you please make sure this is correct and let me know if this will interface with the stepper drive module? For the program a timing instruction block (TON delay) can work. Could you please see how you can help with regards to this as well. If need me to be more specific please let me know. Thanks again for your time.

notingkool2 years ago
Awesome instructable. I make bicycle parts, and when i make hubs the hardest work is drill the holes for the spokes. And something like this will make my life easier. Even i could make another function for the drill to go down. The only problem is that the indexing head is really expensive in my country.

Genial. Yo hago partes de bicicletas, y cuando fabrico mazas, la parte mas dificil es hacer los agujeros para los rayos. Y algo como esto me haria la vida mas facil. Incluso podria hacer otra funcion para hacer que el husillo baje. El unico problema es que el indexador es muy caro en mi pais.