Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

How to increase the stiffness of a simple structure

  1. May 29, 2017 #1
    Hello everybody,

    I am currently working on desinging a tool, and I would like to get your advice on how to increase it's stiffness.

    The tool will be used for correct positioning of a component.
    It consists of 2 parts :
  2. jcsd
  3. May 29, 2017 #2


    User Avatar
    Science Advisor
    Gold Member

    Need some more information . What is the component being held and how is the holding tool supported ?
  4. May 29, 2017 #3


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Way too little information. In which plane does it need to be stiffer? Any limitations on materials? Manufacturing techniques? Cost?

    Simple answer might be to make it out of tubes rather than sheet.
  5. May 29, 2017 #4
    Part one is connection the main frame via nuts and bolts
    Part two has 4 teeth like structures that hangs onto the main frame

    The only important direction is the one shown via the arrow.
    Material is either sheet metal or aluminium.
    no limitation on manufacturing techniques
    Cost should be under 50 euros
  6. May 29, 2017 #5


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    I'm afraid I still can't really visualise what's fixed and where the load is in relation to that fixed point.
  7. May 29, 2017 #6
    I will post a complete picture tomorrow to show exactly how everything's connected
  8. May 30, 2017 #7
    This is how the tool is connectec to the rail.
    There is no load on it. The only requirement is that it's position along the rail should not exceed +- 5mm
    Capture1.PNG Capture2.PNG

    Attached Files:

  9. May 30, 2017 #8


    User Avatar

    How is the end of the fixture with the tested part vertically supported and what is the weight load on the fixture from the tested part?

    If there is any friction force in the direction you indicate then there is no provision in the fixture to prevent the fixture from twisting the vertical attachment arm of the fixture and deflecting the arm in the direction of the load you indicate.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted