Assembly tangents and continuous surfaces

[tonyc]

In the realm of putting together an assembly, I want for Inventor to recognize a continuous surface, despite there being a couple of seams (perfectly tangent seams even).

 

I have found that if the line used to create a surface was not a single line, or spline, then the surface created will be in multiple segments which then limits the functionality of an assembly tangent constraint using that surface - even if the line segments are tangent.

 

Is there a method for solving this trouble?

 

Attached file, rod.zip, is an example assembly with a couple rods tangent to the slots cut in side by side plates.

rod.zip

[shift1313]

When creating a surface, if its loft, or stitch of whatever there is an option that says "merge tangent faces". if you dont select this option you will get those split lines on tangent faces.

[JD Mather]

Is there a method for solving this trouble?

 

Attached is an example three part assembly with a couple rods tangent to the slots cut in side by side plates.

 

Do not use tangent for pins in slots. Use transitional. Transitional will go across different faces - even around sharp 90° corners. I do not see assembly attachment?

[tonyc]

shift1313 - the surface created was the result of a extruded cut or a sweep

JD Mather - my first attempt at your solution didn't work - I'll try again.

 

The file is now attached. Thanks.

[JD Mather]

The file is now attached. Thanks.

 

Did you roll up the EOP? Did you zip the file(s)? Are the *.zip less than 250k

[tonyc]

O.K. - files now correctly attached to the original message (and tested). (Yes, definitely a newbie to the forum, but improving.) Thanks again.

 

Transitional seems to work. OK I see!

 

Thank you, Thank you!

[JD Mather]

Transitional seems to work. OK I see!

 

In the files you attached you still had tangent - you need to remove those.

 

Also, in the real world nothing can be made to exact sizes. And even if it could you cannot move a part through a slot of exactly the same size (at least not without significant force). Add some clearance and account for manufacturing tolerances of your pins/slots.