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tangent mate: tangent propagation limited?

martin_kopplowmartin_kopplow Member Posts: 536 PRO

I wonder why I can't select more tangent faces of the indexing wheel. Is there a limited number or is it limited to convex faces? I know the roller won't reach the bottom of the indexing wheel, but that's just how these things work.

So, how would I best go about to realistically simulate that movement?

Comments

  • S1monS1mon Member Posts: 3,039 PRO

    It’s hard to tell form just the image. Are 100% sure that the surface is tangent? Did you try turning off tangent edge display or checking the dihedral?

  • martin_kopplowmartin_kopplow Member Posts: 536 PRO
    edited December 12

    @s1mon Yepp, it is actually tangent (Look, tangents are set to phantom in the image). I guessed there might be some algorithm at work, checking if the tangent condition could be met at all (due to curvature of the partner part), but it could not know about the condition if I select the indexing wheel before I select the roller. I have no clue.

  • jelte_steur814jelte_steur814 Member Posts: 232 PRO
    edited December 12

    you could try adding a sketch in your assembly that copies the shape of the indexing wheel, but cuts the valley short with an arc. set the diameter of that arc equal to or slightly bigger than the roller. fix the sketch to the indexing wheel.

    or better yet: use the awesome new animate fs.
    In the video on the announcement, Neil automates an indexing wheel in minute 17 of that video.

  • S1monS1mon Member Posts: 3,039 PRO

    @martin_kopplow

    (Sorry - I was looking at this on a mobile browser, and the tangent lines looked solid). I very much doubt this is the issue, but there is an angular tolerance for when edge lines show as phantom indicating tangent. I don't know if that tolerance is any different than the "tangent connected" selections or tangent mate tolerances.

  • martin_kopplowmartin_kopplow Member Posts: 536 PRO

    @jelte_steur814 Yes, I have seen that video of Neils. I want to simulate it, though, not animate. That is: I want the conditions already set to be at work. So I 'll rather try your first approach and support the shape with a sketch.

    @S1mon That wheel is imported geometry. Maybe I should redraw it to be safe.

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