how to measure depth accurately

Good Morning Guys,

I got this part coming my way soon and am thinking of the best way to measure the depth on the CMM.

its a cylindrical part with the pockets drilled at 45 degrees and split into segments.

I will be receiving these parts split into segments.
I got good results using the comparator since it was able to project the apex, but that isn't going to be efficient for the number of parts i will be receiving.

I can create 2d lines and create the intersection points and measure the depth from that point to the outside diameter.

But i was wondering if there is any way to measure these pockets as a cylinder, and then measure the bottom of the pocket as a plane and find the lowest point which the cylinder and plane intersect?
not sure if that makes sense?

looking for some ideas?

what do you think the best way to measure the depth on these parts is?

Thanks in advance you guys have always been a great help!

Donald M over 1 year ago

OP, what did you end up doing?

Well I used one of the holes as my rotation in the alignment to keep everything in the same space / axis.

since everything was aligned to the hole, I created lines on the center of the pocket, created an intersection point. then I created a line on the OD which was centered to the pocket and then dimensioned the depth from the intersection point.

I also used our optical comparator to verify the depth, I cut the molds wide enough so only the apex of the OD/Pocket would be projected and verified the depth that way as well.

Since both told me pretty much the same I was able to trust the measurement on the CMM.

for the rest of the holes i basically copied and pasted with pattern X number of degrees and measured them all..

easy peezy lemon squeezy
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