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Curve pattern with spacing on alternate axis challange

rhys_skinnerrhys_skinner Member Posts: 14 PRO

I have a problem where I require to pattern features/parts on a curve, these need equal spacing on a particular axis not on the curve itself

For a simplified example the goal in the following image; the instances on the top curve to be vertical from the instances on the axis below

This would be simple using sketch, however I cannot use sketch as the amount of instances vary. As far as I'm aware cannot intersect a vertical line pattern and curve within the sketch

The project is parametric and configurable to customer order.

The number of instances varies, the length of the line and curve varies. I would like the have the instances auto populate upon changing configuration.

Any ideas will be welcome

Comments

  • GregBrownGregBrown Member, Onshape Employees, csevp Posts: 211

    Are these curves always coplanar?

  • eric_pestyeric_pesty Member Posts: 1,951 PRO
    edited December 10

    Could you not just linear pattern a sketch (with "reapply features")

    https://cad.onshape.com/documents/083e2b7118ddf51fc6731038/w/1fa376e66b89f5578f63e4d4/e/b470624373dd051f6181916c?configuration=Instances%3D9.0%3BLG%3D0.14300000000000002%2Bmeter&renderMode=0&tangentEdgeStyle=1&uiState=675790f794604078bab73067

  • rhys_skinnerrhys_skinner Member Posts: 14 PRO

    Amazing tip thankyou. I did not realise you could reapply-features to a sketch like that

    I have been experimenting with this technique and found a scenario where it "falls apart" with a curve that returns to the "baseline"

    Any thoughts how this can be more resilient? thanks

  • eric_pestyeric_pesty Member Posts: 1,951 PRO

    That looks like a special case of a circular arc, sketches do get confuse as to which side of the arc you want to be on sometimes…
    You might be able to get around this by "converting" your circle to a spline, using a "3D fit spline" and using that for you sketch reference, something like this:

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