I am having a bit of an issue trying to measure 2 concentric circles and get the distance between the two. No matter what work plane or measurement strategy, I cannot get the measurement I am looking for. I have attached a simple drawing of what exactly I am trying to do. Even in an offline environment straight from the CAD, I am not getting the 5.05 I am looking for. What I am currently doing to get this measurement is taking a a point at X-0 on both circles and calling the distance that way. The issue with that is we have a very small tolerance (-0, +0.05mm) and I am not getting repeatable results using this method. If anyone here as some insight on what I might be doing incorrectly that would be fantastic!
This is my go to for checking the thickness of a tube.
It isnt quite the same as checking the thickness with a pair of pin mics or something because it is just using the diameters to calculate the thickness. For a tight tolerance you might want to use
JEFMANmethod or just take a point on the inside and one in the exact same locations on the outside and do a 3d distance to them in various locations
CIR1 =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
THEO/<0,0,0>,<0,0,1>,
7.35 ACTL/<0,0,0>,<0,0,1>,7.35
TARG/<0,0,0>,<0,0,1>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=NO
CIR2 =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
THEO/<0,0,0>,<0,0,1>,
6.35 ACTL/<0,0,0>,<0,0,1>,6.35
TARG/<0,0,0>,<0,0,1>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=NO
ASSIGN/
V1=
(CIR1.D.MEAS-CIR2.D.MEAS)/2 F1 =GENERIC/LINE,DEPENDENT,CARTESIAN,$
NOM/XYZ,<0,0,0>,$
MEAS/XYZ,<0,0,0>,$
NOM/IJK,<0,0,1>,$
MEAS/IJK,<0,0,1>,$
DISTANCE/
V1,V1 DIM LOC1= LOCATION OF LINE
F1 UNITS=IN ,$
GRAPH=OFF TEXT=OFF MULT=10.00 OUTPUT=BOTH HALF ANGLE=NO
AX NOMINAL MEAS +TOL -TOL DEV OUTTOL
L 0.5000 0.5000 0.2000 0.2000 0.0000 0.0000 ----#----
END OF DIMENSION LOC1
Hey man, thank you so much for this! I've been searching these forums for almost two weeks trying to figure out how to measure an O-Ring depth. This has been the only answer that actually worked for me!
Hey man, thank you so much for this! I've been searching these forums for almost two weeks trying to figure out how to measure an O-Ring depth. This has been the only answer that actually worked for me!