Radius....

[emurray]

If I took three points on a part that has a half circle and PC DMIS recognized it as a circle.....what feature do I use to print out the Radius of the half circle. I knoiw using an optical comparator would be easier, but we dont have that equipment here in the facility. Any suggestions on what I need to do?

[inspector212]

If I took three points on a part that has a half circle and PC DMIS recognized it as a circle.....what feature do I use to print out the Radius of the half circle. I knoiw using an optical comparator would be easier, but we dont have that equipment here in the facility. Any suggestions on what I need to do?

Dimension, Location, then report R.

You need more than just three hits.

[craiger_ny]

The size of the radius?

Never mind 212 got it.

[Matthew D. Hoedeman]

If I took three points on a part that has a half circle and PC DMIS recognized it as a circle.....what feature do I use to print out the Radius of the half circle. I knoiw using an optical comparator would be easier, but we dont have that equipment here in the facility. Any suggestions on what I need to do?

Well, if you are measureing a circle, I would use MORE than 3 hits.

First of all, 3 hits will ALWAYS make a perfect circle. THe problem with that is you have no idea if ALL the hits were good. 4 or more will give you a roundness value as well and it will help indicate if you had a bad hit (high roundness value wouold be suspect).

To print out the radius, simple DIMENSION ~ LOCATION the circle and select R for the axis, which will give you the radius. If you are worried that Pcdmis is showing (graphically) a full circle, don't worry about it.

[Scott D. Haselden]

I always take at least 10 hits on a circle, even if its only on a 60° radius. I know they will be redundant, but its better than getting a single bad hit that moves the circle center location. More hits= less movement on that one bad hit.

I still like to use the icons for some things. The red icon that looks like a square with a plus sign in the middle will give you the report menu for feature location.
In the middle section, there is a box titled "Axes".
Unclick the radio button at the top marked "Auto" (this comes up by default, and tends to give you diameter, when dealing with a circle, and your x, y or z values, based on work plane).
Click the radio button beside "R".
click on the apropriate circle from the features box on the left (I always do this after changing the AXES box because if you do it first, the Auto Axis will click a bunch of stuff you will have to undo).
Make sure that you put the nominal data for a circle DIAMETER in the box for nominal size, under ISO Limits. DMIS will report out half value of whatever is in this box.
Put in your upper (plus) and lower (minus) tolerances (double print tolerance - again, DMIS will report half of what is in these boxes).
Click the "Create" button.

[Matthew D. Hoedeman]

zombie.....

[dph51]

Dawn of the Dead (threads)

[KIRBSTER269]

I was a young man when this was started.

[gt143744]

I think I was just about to start high school, can't believe it's been so long or that this thread popped up again.

[bfire85]

I was married for 1 month when this thread was started!

[KIRBSTER269]

I was married for 1 month when this thread was started!

and divorced when it ended?

[bfire85]

Haha...nope still together!

[KIRBSTER269]

Apparently this thread hasn't ended bfire85

[MetsoMetrology]

Back in 07 I was probably getting ready to take some hits...but not from a radius!

[MetsoMetrology]

That's it?

[MetsoMetrology]

No wonder you're a CMM God!

[vpt.se]

My first encounter with PC-DMIS was in -07 and not a positive one (v4.1)...

[A-machine-insp]

When this thread was started I was working in the motorcycle industry and hating life. Only one of those two things has changed...

[russd]

Ahhh... I was a freshman to the Demon in '07. I still don't miss that MIP on that little PFX.

[MetsoMetrology]

LOL that's the exact setup I'm using now!

[LaserJay]

Dang, I was definitely not thinking about PCDMIS when this thread started. I would not have even known anything about manufacturing.

[bfire85]

Dang, I was definitely not thinking about PCDMIS when this thread started. I would not have even known anything about manufacturing.

Either was I. I was working as a Kitchen Manager of a Perkins.