Help - How to Search for Point Radially or using Circular Moves?

Hello, bring back from the dead

M-Cosmos (Mitutoyo) simply has a circular path point measure. You tell it start angle, radius, and CW/CCW, and it will start at that point and circular move at measure speed for the prehit distance until it measures a point (or errors). Could this be done with a circular move and on error (when it hits the surface), use read point to get an approximate result?

Hello, bring back from the dead

M-Cosmos (Mitutoyo) simply has a circular path point measure. You tell it start angle, radius, and CW/CCW, and it will start at that point and circular move at measure speed for the prehit distance until it measures a point (or errors). Could this be done with a circular move and on error (when it hits the surface), use read point to get an approximate result?

I think the issue would be that MOVE/CIRCLULAR has to be part of a feature - there are no parameters to control it.

I would think a better option might be a vector point in a loop, with 'on miss part' incrementing the loop on.  When a hit occurs, this could be clocked to and then exit the loop.

Maybe just make a loop to move to X,Y point and do some trig calculations each loop to move the equivalent of so many degrees of rotation at a given radius. I have formula saved somewhere for PR to XY coordinate calc. Could make it a subroutine with input variables for center, radius, start angle, and how many degrees per attempt.

 Vernon Zimmerman You should file/request this at the Hexagon Idea Center.

Yeah, I will do that... what is the turn-around time on new features these days ?

For reference, the part I have is completely circular with exception of these features... I have the operator lock the other axis when manually setting up the part to try and best visually align two corners with the machine axis, but this is tedious and not fool proof. I did see the other comment about measuring points with a loop either down from this view, or from ID outward. Both would also be a possibility, but again, tedious and not very elegant.

Uhhh slightly only school idea here, not quite to the Pi tape levels yet, but close. 

Use your computer printer to print out an image of the part on some nice square paper, align the paper to your machine axis, lay the part on the paper and proceed to not waste time trying to futz with it anymore.  If the part "needs to be on the rock" cut out the middle of the image and grab a sharpie to tattoo your CMM. 

Regrettably, the part is closed on the bottom. I'm just showing the top face here. So basically a bucket with this shape on the ID at the top.

Lame! That $150 3D printer is looking better and better! Tooling for all. 

Not a bad idea TBH... print a fixturing block that keys into two opposing notches and gives a flat surface for rough aligning.

I would read in some corner points: 4 points, then get the surface alignment..