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Morning All:
This conc callout is being a pain. The part is stamped and for some reason, they think this is going to come out perfectly lined up. Not buying it.
Anyways, The dimension is question is the concentricity.
Currently, I have a circle with 15 hits in bot the bottom thru and the OD/ID.
Here is what I have tried.
1 – Created a cylinder on the OD/ID (large area) and aligned/rotated to that, then did the thru dia.
2 – circle to circle
3 – circle to cylinder.
The problem that I am having is these are stamped out on a press. Held into place by a 3 jaw chuck with 24.5in lbs torque. The part is no being crushed in no form.
I get a roundness callout good but, the conc is always changing. It can be measured in 0,90,180 and 360 degree rotations and I get them out no matter what.
The part also has a fixture that it sits on via the outside radius's and then locked in by the 3 jaws.
I’m out of ideas on checking this. However, I was thinking about total runout but, dmis will not let me do that. I think that is really what they are looking for anyways.
This print is the stamped print and is more internally than for the customer. The machined part has threads on the OD/ID and I think they are more worried about wall thickness and the threads
Being cut to deep and thus causing them to be weak.
My question is. Does this conc callout even hold water?. Due to the making of a cylinder to a circ seems incorrect. Not sure.
Please let me know your thoughts so I can at least say, there will be no way we can accurately check con callout.
As always, thanks for the input!!!.
Always like the feedback from users.
This conc callout is being a pain. The part is stamped and for some reason, they think this is going to come out perfectly lined up. Not buying it.
Anyways, The dimension is question is the concentricity.
Currently, I have a circle with 15 hits in bot the bottom thru and the OD/ID.
Here is what I have tried.
1 – Created a cylinder on the OD/ID (large area) and aligned/rotated to that, then did the thru dia.
2 – circle to circle
3 – circle to cylinder.
The problem that I am having is these are stamped out on a press. Held into place by a 3 jaw chuck with 24.5in lbs torque. The part is no being crushed in no form.
I get a roundness callout good but, the conc is always changing. It can be measured in 0,90,180 and 360 degree rotations and I get them out no matter what.
The part also has a fixture that it sits on via the outside radius's and then locked in by the 3 jaws.
I’m out of ideas on checking this. However, I was thinking about total runout but, dmis will not let me do that. I think that is really what they are looking for anyways.
This print is the stamped print and is more internally than for the customer. The machined part has threads on the OD/ID and I think they are more worried about wall thickness and the threads
Being cut to deep and thus causing them to be weak.
My question is. Does this conc callout even hold water?. Due to the making of a cylinder to a circ seems incorrect. Not sure.
Please let me know your thoughts so I can at least say, there will be no way we can accurately check con callout.
As always, thanks for the input!!!.
Always like the feedback from users.
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