Alignment on Irregular Shapes

[[Da...]]

 

Can someone give me an idea of how to fixture and base align this part? I am used to doing parts with flat planes perpendicular to each other that I can use for the alignment, but this part does not have that. 

I was thinking I would lift the part on standoffs although I am not sure how I will square it up or keep it from spinning (side note, if anyone has a recommendation for fixturing items that you find versatile or game-changing, feel free to pass those along!) Then I was thinking I would combine the tops of the two "wings" into a single plane and use that as Z origin. But as far as X and Y origins, there are not any planes perpendicular to those that I could use. I thought about making a plane on the back side of the tail and another on the top ledge of the tail and creating an intersection line and using that as the X origin, but I that still leaves Y and clocking. 

I am just completely stuck right now, so any input you have will probably generate a bunch of follow up questions from me, but I would appreciate any direction you can give. 

[[Ma...]]

Since you are in Inspect section, then i would not bother to help you with a fixture - i don't have such knowledge to have proper scans.

But for alignment. That comes mostly from a drawing and/or real shape of that part.

If you want to have fine alignment, then use Geometric instead of ISO/ASME - this way you should be able to use side plane and bottom plane.
Also you could use those 5 holes as RPS. But i often go with local bestfit.

[[Da...]]

Thank you for pointing out my mistake. I meant to post this in Calypso. 

Is there a way for me to delete this?

[[Ma...]]

I think moderators will move it. But you can possibly change title of this topic

[[DW...]]

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 Use the CAD file to create a reference point system (RPS) alignment. This is a common alignment system used in the auto industry for things like body panels that lack standard geometries. There are threads on here about RPS alignments in Calypso. I haven't used RPS alignments all that much in Calypso, but I do remember that looping the RPS alignment at least 3X is important. Hopefully someone with more RPS alignment experience chimes in. Best of luck sir.

[[Da...]]

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Thanks for the suggestion. I have never heard of that type of alignment, so I will look into that! 

[[Jo...]]

Hello Darci,

you have several areas that are "standard" geometrical elements. you dont need rps in my opinion.

There seems to be a funtional area where something will be plugged in (zylinder) and two face plates to adapt it to a larger assembly.

Yor alignment should represent this.

 

Something like this for example:

[[Pa...]]

I'm with Jochen.  For fixturing, I might hold it in the orientation you've shown here.

Is there any way you can make a fixture that accepts that larger thread on the bottom?  You could just screw it into the fixture, then find an easy way to mount the fixture on your table.  If needed this fixture can be set at the correct angle to align your larger (roughly X+) cylinder parallel with the table.

The alignment Jochen suggests looks good.  Otherwise, if you want to rotate it as I've suggested you could use that larger cylinder as spatial (4DOF), a point on the tilted face to constrain the fifth, and a circle in that smaller tilted bore to constrain the 6th DOF.  If you do it this way you don't need to create angles on styli but maybe this isn't a hardship for you.