TP of open slot

I came across a print requirement too inspect TP of an open slot on a circular disk as shown in image attached.
what would be the correct way to inspect this?

rikracer over 2 years ago

I would use a created slot from circle scans. If you don't have a scan head, you may not be able to get enough data on the very small radii. Good luck, that's what I would try.
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vpt.se over 2 years ago

Two "circles" on the radiis, construct midpoint/generic circle in order to utilize (M). Dimension the generic circle.

Good luck.
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jigars over 2 years ago

Two "circles" on the radiis, construct midpoint/generic circle in order to utilize (M). Dimension the generic circle.

Good luck.

my first thought was the same but the issue arise because of the small portion of circle on both sides.
even a minor variation in diameter results in major deflection in center point.
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jigars over 2 years ago

This is how I have done it for now

MOVE/CLEARPLANE
CIR_LH =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
THEO/<-0.53,22.305,8.88>,<0,0,1>,0.75
ACTL/<-0.53,22.305,8.88>,<0,0,1>,0.75
TARG/<-0.53,22.305,8.88>,<0,0,1>
START ANG=238,END ANG=270
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=NO

DIM LOC19= LOCATION OF CIRCLE CIR_LH UNITS=IN ,$
GRAPH=OFF TEXT=OFF MULT=10.00 OUTPUT=BOTH HALF ANGLE=NO
AX NOMINAL +TOL -TOL MEAS DEV OUTTOL
R 0.3750 0.0160 0.0160 0.3750 0.0000 0.0000 ----#----
END OF DIMENSION LOC19

CIR_RH =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
THEO/<0.53,22.305,8.88>,<0,0,1>,0.75
ACTL/<0.53,22.305,8.88>,<0,0,1>,0.75
TARG/<0.53,22.305,8.88>,<0,0,1>
START ANG=122,END ANG=90
ANGLE VEC=<-1,0,0>
DIRECTION=CW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=NO

DIM LOC20= LOCATION OF CIRCLE CIR_RH UNITS=IN ,$
GRAPH=OFF TEXT=OFF MULT=10.00 OUTPUT=BOTH HALF ANGLE=NO
AX NOMINAL +TOL -TOL MEAS DEV OUTTOL
R 0.3750 0.0160 0.0160 0.3750 0.0000 0.0000 ----#----
END OF DIMENSION LOC20

ASSIGN/VLH=LOC19.R.MEAS
ASSIGN/VRH=LOC20.R.MEAS
ASSIGN/VSM=VLH+VRH
ASSIGN/VAV=VSM/2

S1_MID =FEAT/POINT,CARTESIAN,NO
THEO/<0,22.305,8.88>,<0,0,1>
ACTL/<0,22.305,8.88>,<0,0,1>
CONSTR/POINT,MID,CIR_LH,CIR_RH

DIM DIST67= 2D DISTANCE FROM CIRCLE CIR_LH TO CIRCLE CIR_RH (CENTER TO CENTER),NO_RADIUS UNITS=IN,$
GRAPH=OFF TEXT=OFF MULT=10.00 OUTPUT=NONE
AX NOMINAL +TOL -TOL MEAS DEV OUTTOL
M 1.0600 0.0050 0.0050 1.0600 0.0000 0.0000 ----#----

F2 =GENERIC/ROUND_SLOT,DEPENDENT,CARTESIAN,OUT,$
NOM/XYZ,<0,22.305,8.88>,$
MEAS/XYZ,<0,22.305,8.88>,$
NOM/IJK,<0,0,1>,$
MEAS/IJK,<0,0,1>,$
NOM/IJK2,<1,0,0>,$
MEAS/IJK2,<1,0,0>,$
RADIUS/0.375,VAV,$
DISTANCE/1.06,DIST67.M.MEAS

DIM LOC21= POSITION OF SLOT F2 UNITS=IN ,$
GRAPH=OFF TEXT=OFF MULT=10.00 OUTPUT=BOTH FIT TO DATUMS=OFF DEV PERPEN CENTERLINE=OFF DISPLAY=DIAMETER
AX NOMINAL +TOL -TOL BONUS MEAS DEV OUTTOL
X 0.0000 0.0000 0.0000
LF 1.0600 0.0150 0.0150 0.0150 1.0600 0.0000 0.0000 ----#----
WF 0.7500 0.0320 0.0320 0.0320 0.7500 0.0000 0.0000 ----#----
TP MMC 0.1250 0.0150 0.0000 0.0000 0.0000 #--------
END OF DIMENSION LOC21