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!
I think you mean measuring a cone not cylinders. If this is the case, the auto cone has a starting point (in your case the .228 depth) which you should define in the creation window which if I am not mistaken you can dimension later (try distance from the plane to the cone). IT should work, although I am not infront of the CMM atm so I cannot test and verify it.
Lets take the middle cylinder out of the three as example. Flat on the table, cylinder pointing in machines Y-axis.
Measure the cylinder.
Align to it (primary).
Measure the bottom plane for the cylinder.
Set X and Z origin in cylinder.
Set Y origin in plane.
Measure a line going in Z on the plane, X=0, Y=0 adjust Z as necessary for the two points.
Measure a line going in Y on the cylinder surface. X=0, adjust Y as necessary, Z=negative cylinder radii (actuals if possible)
Intersect the two lines.
Evaluate the distance between the top plane and the intersection point, perpendicular to the top plane.
(For the .228-.230 depth): If you have styli that can accurately measure the 45 degree faces, that's best. Otherwise, you have to take self-centering points, and assume the angle is 45 degrees. You'll have to use formulas, either through ASSIGN, or construct offset points, putting the formulas in the target field. When you work out the formulas you want to use, just bear in mind that self-centering points return the position of stylus center, not stylus surface.