Cylinder Intersection

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ragin1
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Cylinder Intersection

Post by ragin1 » Thu Nov 06, 2014 3:05 pm

How do I get the intersection of 2 cylinders on the outside surface of one of the cylinders? See attached. I'm trying to get the .375 dimension from the intersection of the .032 cylinder and the outer cylinder. Thanks.
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Tabor
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Re: Cylinder Intersection

Post by Tabor » Thu Nov 06, 2014 3:39 pm

Treat the larger cylinder as a line and create a point using line/cylinder intersect.
Tabor

ragin1
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Re: Cylinder Intersection

Post by ragin1 » Thu Nov 06, 2014 4:08 pm

Thanks Tabor.

Tabor
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Re: Cylinder Intersection

Post by Tabor » Fri Nov 07, 2014 10:01 am

I only briefly glanced at the print before but looking now it would seem to me that they aren't asking for the distance from the intersection of the center line and cylinder surface but rather where both center lines intersect the top plane. That would be a much easier dimension to evaluate. If your 15 deg is spot on, the measurement should be the same whether you take it from the intersection of the plane/center line or cylinder/center line but the farther the 15 deg gets from nominal, the more error you'll get by evaluating it the way you suggested.
Tabor

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mhochkins1
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Re: Cylinder Intersection

Post by mhochkins1 » Fri Nov 07, 2014 10:16 am

"How do I get the intersection of 2 cylinders on the outside surface of one of the cylinders? See attached. I'm trying to get the .375 dimension from the intersection of the .032 cylinder and the outer cylinder."

I am assuming the outside surface of one of the cylinders is the .624 diameter?
You need to create a line along the outside surface of the cylinder where it intersects the angled .032 diameter cylinder.

Looks like a fun challenge. Do you have a CAD model?
Best Regards,
Mark Hochkins

ragin1
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Re: Cylinder Intersection

Post by ragin1 » Fri Nov 07, 2014 2:15 pm

Thanks guys. I created a line on the .032 axis, then created a point on the intersection of the line and the .624 cylinder, as Tabor stated. The guys on the cnc nailed it first try. Now the .1868 cylinder took them a while on the 5th axis.

ragin1
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Re: Cylinder Intersection

Post by ragin1 » Fri Nov 07, 2014 2:20 pm

Oh yeah, Mark I do have the model. Measured the .032 with a .5mm tip. I only had to tweak the depth 1 time.

Off topic, but this is the one real big diff to PCDMIS. If that .032 would have been off location, I could not have measured it with CMM Manager. PCDMIS would have allowed me to tweak with target points, where I'm left with just approach and retract with CMM Manager.

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mhochkins1
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Re: Cylinder Intersection

Post by mhochkins1 » Fri Nov 07, 2014 2:55 pm

You may have been able to use "seek hole" to locate it. However that is a very small hole so it could not be too far off location to work.

I am curious because the drawing appears to show the dimension to the outside tangent point rather than the center line if the .032" hole. Am I seeing that correctly?
Best Regards,
Mark Hochkins

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