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So not a Guru

Creating a ball gage tangent to a solid

13 posts in this topic

Is this possible in MC?

We get a lot of fairly close tolerance countersink callouts & what we usually do is put a M00 that tells the operator to put a positive height offset for the tool in, before running the c'sink. Then after it's ran, they check it by measuring with a ball gage & adjust the offset accordingly.

I always have to draft the geometry of the c'sink & ball dia to determine what the measurement should be.

I was just wondering if there was a more faster way to do this.

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absolutely

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absolutely

Is it a secret that I need my Cracker Jacks decoder ring for? :secret:

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Is it a secret that I need my Cracker Jacks decoder ring for? :secret:

Silly, it's the Little Orphan Annie secret decoder ring! 

Be sure to drink your Ovaltine!

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I didn't look at JoshC's file but I do it with geo and use sizes of readily available ball gages.  I send out a print with what ball gage to use and what it should read on depth mics.  Can you share a file, I'll show you how I do it.

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I'd do a spreadsheet document for calculating the values. It's basic 2D math. Put in the gage ball diameter, countersink tip angle and either the start or end diameter of the cone and the spreadsheet will give you the needed Z value.
 

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You should look at JoshC's file, cause that how I do it too.

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Thanks guys! I was camping so I didn't get this till this morning. Josh, that is exactly what I was looking for.

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C-hamfer-Countersink-Gage.jpg

 

I have used these gauges with good results.

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C-hamfer-Countersink-Gage.jpg

 

I have used these gauges with good results.

Yes, we have them, but not for all diameters & all angles. Also, there are many applications where these gauges are interfered with but other areas of a part.

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I do it like Josh, expect I use the primitives to make the Solid Sphere so I can do solid layout to make a print to send to the floor for checking them.

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