How Can I Achieve Precise Rapid Rotation in My Mechanical Project?

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The project aims to achieve precise rapid rotation of an inner tube within an outer tube, requiring the inner tube to complete a 360-degree turn in 0.05 seconds, with the capability to perform up to 15 rotations per second. The user is exploring the use of stepper motors but is uncertain if they are suitable for this application. Precision requirements include a rotation accuracy of +/- 0.5mm and a load of approximately 30 grams. The final product is intended for intermittent use over extended periods, specifically 15-20 minute intervals within a four-hour timeframe. Recommendations include researching off-the-shelf stepper and servo drivers, as well as DIY resources for further guidance.
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Hi all

Im very new to all of this and require help and guidance with my project.

The aim of my project is to rotate an inner tube (35mm long 20mm diameter) within another tube (21mm diameter - 80mm length) one full 360' turn and then stop in 0.05 seconds, ready for the next command. If the user can press the button 15 times a second it will turn 15 times (0.05 per turn).


Ive been reseaching stepper motors but not sure if they are the right "tool" to use.

Can you please suggest a method how I could preform this motion.

I have created a model of what I need and have used a cordless drill as the "engine" to turn the parts and the method works. Now I just need to scale the "engine" into the body of the object.

thanks in advance.

appologise if this is in the wrong forum.
 
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How precise must the motion be with respect to rotation and time?
What is the load? (How much weight is spinning around?)
Will it be in continuous use, or is it just for a demonstration?

There are a number of off-the-shelf stepper/servo drivers in a wide price range. Depending on how much you want to learn, you can find quite a few plans on instructables.com, hackaday.com, and other DIY sites.
 
hi pantaz

thx for the quick reply and sites.

How precise must the motion be with respect to rotation and time?

The time must be able to do about 20 rotations per second if required. With regards to the rotation, it must be able to start in "A" position and finish in "A" +/- 0.5mm

What is the load? (How much weight is spinning around?)

the weight is +/- 30g

Will it be in continuous use, or is it just for a demonstration?

the final product will be used for 15 - 20 minute intervals over 4 hour period or longer.
 
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