Recent content by sempiternum

  1. sempiternum

    Vibration in "cantilever" rotating bar

    I've based my design on what I've seen in most bar feeders (see notes). Also, "V" channels will probably be constantly lightly lubricated, and the force from the plastic roller applied through a spring. Most machines actually use 2 "V" channels, but I'd still need some sort of notion of the...
  2. sempiternum

    Vibration in "cantilever" rotating bar

    Yes, actually, the bar won't be in cantilever, it would be held in place through all of its length (Outside of the lathe) with 3 or four devices like shown in this picture What I want to calculate is a magnitude of force "F", which should be big enough so that there's minimum eccentrity...
  3. sempiternum

    Vibration in "cantilever" rotating bar

    Hi. I'm working in the design of an auotomatic bar feeder for a CNC lathe. I've established that the bars will not be longer than 1.2 m and will not have a diameter of more than 75 mm. Suppose they are steel bars, which would make them have a mass of about 80 kg So, bars are tightly held in one...
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