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Position helpers for beams

lars_rengersenlars_rengersen Member Posts: 28 ✭✭
The laser cutting company used to have a feature called "position helpers" in their online ordering tool.
That allowed me to simply add them to connecting beams.
That resulted in a small extra flange on one tube a a corresponding hole in the other.



Unfortunately they do not offer that functionality anymore.
Is there an easy way of doing this in onshape?
I can always do this manually but if it can be done semi-automated that would be handy.
Thanks in advance for your help.
Tagged:

Best Answers

  • john_mcclaryjohn_mcclary Member, Developers Posts: 3,275 PRO
    Accepted Answer
    Sure can!

    For Sheet-metal It's called tab in OnShape

    start by drawing a sketch of a square, or semi circle in your case on the part you want to have the tab attached to.
    In the example below I sketched a rectangle on the "top surface" of the gray part. Then you select the "Tab" feature in sheet-metal commands.
    Select your sketch, and the two parts you want, and OnShape will add the relief cut to the slotted part. (the blue part in this example)


    For any other part:

    Use Boolean with offset, it takes a few more inputs, but does the same thing.
    Sketch your tab shape just like sheet metal, except this time you will use extrude-add to make it a part of the "red" part shown below.
    then use Boolean-subtract.

    Select the tab part as a "Tool"
    Select the slot part as a "Target"
    Select offset.
    Select all 4 faces around the tab.
    Then enter your offset distance.
    Don't forget to check the "Keep Tools" option to keep your original part.

Answers

  • john_mcclaryjohn_mcclary Member, Developers Posts: 3,275 PRO
    Accepted Answer
    Sure can!

    For Sheet-metal It's called tab in OnShape

    start by drawing a sketch of a square, or semi circle in your case on the part you want to have the tab attached to.
    In the example below I sketched a rectangle on the "top surface" of the gray part. Then you select the "Tab" feature in sheet-metal commands.
    Select your sketch, and the two parts you want, and OnShape will add the relief cut to the slotted part. (the blue part in this example)


    For any other part:

    Use Boolean with offset, it takes a few more inputs, but does the same thing.
    Sketch your tab shape just like sheet metal, except this time you will use extrude-add to make it a part of the "red" part shown below.
    then use Boolean-subtract.

    Select the tab part as a "Tool"
    Select the slot part as a "Target"
    Select offset.
    Select all 4 faces around the tab.
    Then enter your offset distance.
    Don't forget to check the "Keep Tools" option to keep your original part.

  • lars_rengersenlars_rengersen Member Posts: 28 ✭✭
    edited December 2017
    Thank you very much for the quick and elaborative answer John!
    It worked perfectly.


    Instead of an offset of 0.1 inch (2.5 mm) I used 0.5 mm (0.02 inch), should that be sufficient to insert the tab?
  • lars_rengersenlars_rengersen Member Posts: 28 ✭✭
    Thanks!
    Yes, I noticed it was Onshapes default indeed.

    I just checked.
    The machine at the laser cutting company that I intend to use has a tolerance of 0.2 mm (0.008 inch), so I could also move to 0.01 inch.
    Thanks for your help!
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