Cheap Mechanical Device for Intermittent Motion

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A user is seeking a cost-effective mechanical device capable of achieving specific intermittent motion along a shaft, specifically rotating it 60 degrees every 30 seconds. They are considering a toothed gear or ratchet mechanism powered by a linear solenoid actuator. Another participant mentions a linear motor mechanism that uses grippers on a smooth shaft, suggesting a cam or roller setup as an alternative. The discussion emphasizes the need for clarity on the type of motion required and the shaft specifications. Overall, the focus is on finding a suitable solution for controlled, discrete motion.
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Does anyone know of a cheap mechanical device which is able to achieve specific intermittent / discrete motion along a shaft?
 
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Seraph042 said:
Does anyone know of a cheap mechanical device which is able to achieve specific intermittent / discrete motion along a shaft?

What kind of motion? Like a crawling motion? How fast? can the shaft have threads, or does it need to be smooth?

I remember a linear motor mechanism that I read about once that could move on a smooth shaft because it had two gripper mechanisms (one at each end), and an extension capability in the middle. I forget what the application was, though.
 
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I'm trying to rotate a shaft 60 degrees every 30 seconds; right now I'm looking into some sort of toothed gear / ratchet powered by a linear solenoid actuator... I'm still working on figuring out the details but it could work.

do you guys agree with that or should I be looking at something else ??
 
Seraph042 said:
...intermittent / discrete motion along a shaft...

... rotate a shaft 60 degrees every 30 seconds...
Which is it?
 
Sorry, I meant to say the latter in the original post (I can't update it for some reason)
 

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