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Fast vertical movment

Discussion in 'General Talk' started by Johan Holtby, Apr 1, 2019.

  1. Johan Holtby

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    Hi
    I'm new to this forum and wonder about the vertical movement. I see a lot of o people using screws ( of varying kinds) but I need speed since my project will be related to automated storage and retrieval system. My current thoughts are to use some standard linear movement design using Vslot ad the add a counterweight.

    Do anyone knows about any project using high-speed vertical movement. Is there a limit to the speed of Vslots? Or is this not a project for Vslot but instead should use linear rails?
     
  2. Rick 2.0

    Rick 2.0 OpenBuilds Team
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  3. Rob Taylor

    Rob Taylor Journeyman
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    I have no issues accelerating horizontally at speeds up to 20m/s^2 with standard V-Slot, wheels and GT2 belt. Just gotta make sure everything's tight and well aligned. Vertical you might need to dial it back a little depending on mass, but in general you should be fine.

    If you're moving larger loads, but there isn't much of a horizontal vector to affect the V-Slot wheels, a high-pitch ballscrew would be the best option. They're what's used in industry for high-speed motion.

    If you're moving more mass including a horizontal component that might affect the V-Wheels over time, then linear rail (probably linear shaft, linear rail is probably overkill unless you also need extreme precision and rigidity for as small a volume as possible) would be the way to go.
     
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  4. Johan Holtby

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    Thank you! I have dived into that data but it was a little bit to slow speeds and not looking on long term stability. Still interesting data though.
     
  5. Johan Holtby

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    Great answer! Exactly what I was looking for. I will move a head that lifts things. The total weight of the head is about 1kg. And the head should move as fast as possible but the cost is a factor. So the complete 2 meter movement from start to stop should take about max 5 seconds. Long term stability is king though and about 2 000 000 operations before maintenance is the goal.
     
  6. David the swarfer

    David the swarfer OpenBuilds Team
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    To go that fast you may need to increase the pulley size on a belt drive system. There is a limit to how fast motors can turn (-:
     
  7. Johan Holtby

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    Will keep that in mind! :)
     

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