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    • Hand fed machine rotating knob question

    Discussion in 'The main mechanical design forum' started by mohamed.elsabagh, Dec 23, 2011.

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    1. mohamed.elsabagh

      mohamed.elsabagh Member

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      I understand that I can use ball screw driver with a motor shaft but it's not desirable with hand fed machines. My purpose is to design a manual knob which when rotates clockwise or anti-clock wise it moves a vertical rod up or down. what should I use??
       
      mohamed.elsabagh, Dec 23, 2011
      mohamed.elsabagh, Dec 23, 2011
      #1
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    3. Dana

      Dana Well-Known Member

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      What is a "hadfed machine"?
       
      Dana, Jan 3, 2012
      Dana, Jan 3, 2012
      #2
    4. GarethW

      GarethW Chief Clicker Staff Member

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      Perhaps a typo for "hand fed" (i.e. manual)?
       
      GarethW, Jan 3, 2012
      GarethW, Jan 3, 2012
      #3
    5. other

      other Member

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      bolt and nut can do the same as ball screw, can it work?
       
      other, Jan 5, 2012
      other, Jan 5, 2012
      #4
    6. ranjan.ajm

      ranjan.ajm New Member

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      Screw and nut can be used

      Screw and nut can be used as you are using knob to rotate the screw. The ball screw will be reversible, i mean when ball screw is used friction will be very low and your slide may not stay on position you want.
       
      ranjan.ajm, Jan 6, 2012
      ranjan.ajm, Jan 6, 2012
      #5
    7. cct3000

      cct3000 Member

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      may be typing mistake you mean "hand fed" ?
       
      cct3000, Jan 6, 2012
      cct3000, Jan 6, 2012
      #6
    8. cct3000

      cct3000 Member

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      hand fed mechanism by hand

      A Trapezoidal thread of bolt and nut may suit your application of vertical up and down motion, especially if you want to be done by hand. thread selection --> http://en.wikipedia.org/wiki/Acme_thread_form
       
      cct3000, Jan 6, 2012
      cct3000, Jan 6, 2012
      #7
    9. mohamed.elsabagh

      mohamed.elsabagh Member

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      I mean handfed sure I am sorry
       
      mohamed.elsabagh, Jan 7, 2012
      mohamed.elsabagh, Jan 7, 2012
      #8
    10. GarethW

      GarethW Chief Clicker Staff Member

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      OK - I changed the thread title so things make a bit more sense. :)
       
      GarethW, Jan 8, 2012
      GarethW, Jan 8, 2012
      #9
    11. cct3000

      cct3000 Member

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      DryLin® - Trapezoidal leadscrew nut

      igus have a product can be refer to , you can make it by using hand driven . see the movie in the link you will get the idea.

      the [h=2]DryLin® - Trapezoidal leadscrew nut also can purchase and make your own vertical motion mechanism[/h]
      hope this will help

      http://www.igus.com.my/wpck/default.aspx?pagename=drylin_trapezgewindemutter
       
      cct3000, Jan 8, 2012
      cct3000, Jan 8, 2012
      #10
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