Welcome to Our Community

Some features disabled for guests. Register Today.

1500mm Screw Whip Solved??

Discussion in 'General Talk' started by GrayUK, May 13, 2018.

  1. GrayUK

    GrayUK Openbuilds Team Elder
    Staff Member Moderator Builder

    Joined:
    May 5, 2014
    Messages:
    1,482
    Likes Received:
    478
    This is new to me, but maybe not to others. We find that longer screws are inclined to generate whip when being asked to drive at higher speeds, but take a look at this.

    Long Travel vs High Speed: Part 2

    I'm pretty sure we can throw this idea out there, and someone can come back with a cheaper but reliable design we could use.
    I really haven't given it much thought, from a practical point of view, but I like the idea!
    Any suggestions??
     
    Mark Carew likes this.
  2. Rick 2.0

    Rick 2.0 OpenBuilds Team
    Staff Member Moderator Resident Builder Builder

    Joined:
    Dec 20, 2013
    Messages:
    1,855
    Likes Received:
    840
    Actually fairly simple. Can't really do it with TR8x8 screws due to the lack of decent AB nuts but to drill out a standard pulley, mount a dumpstercnc flanged AB lead nut inside and wedge the whole assembly between a couple thrust bearings would really not be that difficult. As far as reliability, that'll all come down to testing.
     
    Mark Carew likes this.
  3. JustinTime

    JustinTime Master
    Builder

    Joined:
    Dec 18, 2013
    Messages:
    171
    Likes Received:
    37
    The hollow shaft is a great idea. You could make the lead screw almost any length and have no whip.
     
  4. Gary Caruso

    Gary Caruso OpenBuilds Team
    Staff Member Moderator Builder

    Joined:
    May 19, 2016
    Messages:
    555
    Likes Received:
    215
    I like it, can do it with something like this... i can't find any with TR8*8, this one is 10x10mm which would be good too
    Non-captive stepper
     
  5. GrayUK

    GrayUK Openbuilds Team Elder
    Staff Member Moderator Builder

    Joined:
    May 5, 2014
    Messages:
    1,482
    Likes Received:
    478
    Yeah, I'd forgotten about those. Could easily strap it under the moving bed on the Y Axis:D
    1500 Y axis sorted :thumbsup::thumbsup:
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice