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pimm15-Moonstone
15-Moonstone
December 16, 2019
Solved

How best to constrain sketch at a multiple convergence?

  • December 16, 2019
  • 1 reply
  • 2134 views

When there are multiple entities that come to a convergence it is difficult within a sketch to have the entities move in a reliable manner with changes.  It is also difficult to know which constraints apply to which entity.

 

Maybe this is really simple but it drives me nuts.

 

Below is an example of a sketch convergence.  Note that there are a number of point on entity constraints.

convergeconverge

There are at least 3 point on entity constraints as well as the point which gets used down stream.  The magenta vertical line is a construction line.  I need to be able to fix the convergence at the horizontal reference.  The center point of the 2 angled lines needs to be at a distance from the vertical reference.  The 2 angled lines needs to have their value driven from the central vertical reference.

 

What would be nice is if everything that is converged only had one point of which the 2 angled lines only could move in the horizontal direction fixed on the horizontal point held to the horizontal reference.

 

Is there a simple way of doing that?

Best answer by tbraxton

Add some construction geometry to define your intent within the sketch. Try adding the construction circle and/or the sketch csys as shown below. You can also lock dimensions in the sketch as required to get desired behavior when flexing the dims.

 

Add construction geometryAdd construction geometry

1 reply

tbraxton
22-Sapphire II
tbraxton22-Sapphire IIAnswer
22-Sapphire II
December 16, 2019

Add some construction geometry to define your intent within the sketch. Try adding the construction circle and/or the sketch csys as shown below. You can also lock dimensions in the sketch as required to get desired behavior when flexing the dims.

 

Add construction geometryAdd construction geometry

    P
    pimm15-MoonstoneAuthor
    15-Moonstone
    December 16, 2019

    Tbraxton:  This is actually would be 2 viable solutions that would hold geometry in place in my situation.

     

    The use of a circle with same size construction lines from a center point should hold multiple lines to a center point.

     

    Also; I've never used a sketch csys before, but it does appear to keep minor constraints to a minimum.

     

    Thanks, I will be trying both of these ideas as there are different conditions which 1 might be more useful than the other.

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