Best sensor for quantifying magnitude of vibration?


  • Hero Member

    I have a small CNC for etching PCB's by isolation routing. The process creates vibration in the machine, which gets worse if there are lose bolts.

    I am wondering: what sensor could I attach to it that would let me measure the magnitude of vibration? If the amount of vibration seemed unusually large, perhaps it could notify me that I should tighten the bolts again.

    At the moment I'm imagining that maybe attaching a microphone to the CNC might provide this kind of magnitude information (which might be represented as loudness). However, is that the best I can do, or is there actually a better sensor that I might use?


  • Mod

    I can't think other than an accelerometer, the fun part will be to figure out what is the direction of the vibration in order to mount the sensors accordingly or use a 3 axis one


  • Hardware Contributor

    As @gohan says, this is the job for an accelerometer.
    Search "accelerometer machine vibration" or "accelerometer CBM" in Google and enjoy 🙂



  • While not specifically answering your question... would loctite help?
    Or possibly nuts with self locking features (castle etc).


  • Hero Member

    @johnrob said in Best sensor for quantifying magnitude of vibration?:

    While not specifically answering your question... would loctite help?

    Yes, I think it would help. Not very easy to apply in this situation though, because most connections are t-nut without much thread pushing through to the other side.


 

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