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true position of holes not working right.... help?

I'm doing something wrong here and not sure what it is. Wondered if you guys might be able to help me out.
STARTUP =ALIGNMENT/START,RECALL:USE_PART_SETUP,LIST=YES
ALIGNMENT/END
MODE/MANUAL
FORMAT/TEXT,OPTIONS, ,HEADINGS,SYMBOLS,SD;NOM,TOL,MEAS,DEV,OUTTOL, ,
LOADPROBE/4MM_BALL_615L_4D
TIP/TIP1, SHANKIJK=0, 0, 1, ANGLE=0
PLN1 =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,NONE,LEAST_SQR
THEO/<311.1999,-134.8891,125.885>,<0,0,1>
ACTL/<-10.6231,-25.3068,14.678>,<-0.0012376,0.0041415,0.9999907>
TARG/<311.1999,-134.8891,125.885>,<0,0,1>
ANGLE VEC=<1,0,0>,SQUARE
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=2,NUMROWS=2
SPACER=0
SHOW HITS=NO
PLN2 =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,NONE,LEAST_SQR
THEO/<311.705,-135.0023,124.6302>,<0,-1,0>
ACTL/<-9.4192,-25.9663,12.3943>,<0.9289078,-0.3702947,0.0034893>
TARG/<311.705,-135.0023,124.6302>,<0,-1,0>
ANGLE VEC=<1,0,0>,SQUARE
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=2,NUMROWS=2
SPACER=0
SHOW HITS=NO
CYL1 =FEAT/CONTACT/CYLINDER/DEFAULT,CARTESIAN,IN,FIXED_RAD
THEO/<310.1247,-134.1023,122.235>,<0,0,1>,1.0 025,0.65
ACTL/<-10.2402,-25.6106,14.4098>,<-0.0650979,-0.0054909,0.9978638>,1.0025,0.65
TARG/<310.1247,-134.1023,122.235>,<0,0,1>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=3,NUMLEVELS=2,DEPTH=0,END OFFSET=0,PITCH=0
SAMPLE METHOD=SAMPLE_FEATURE
SAMPLE FEATURE=PLN1
FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
SHOW HITS=NO
LIN1 =FEAT/LINE,CARTESIAN,UNBOUNDED,NO
THEO/<311.4525,-135.0023,125.885>,<1,0,0>
ACTL/<-9.3943,-25.8822,14.6819>,<0.3703058,0.928903 7,-0.0033888>
CONSTR/LINE,INTOF,PLN1,PLN2
CIR1 =FEAT/CIRCLE,CARTESIAN,OUT,NO
THEO/<310.1247,-134.1023,125.885>,<0,0,1>,1.0 025
ACTL/<-10.2578,-25.6121,14.6797>,<-0.0650979,-0.0054909,0.9978638>,1.0025
CONSTR/CIRCLE,INTOF,CYL1,PLN1
A1 =ALIGNMENT/START,RECALL:STARTUP,LIST=YES
ALIGNMENT/LEVEL,ZPLUS,PLN1
ALIGNMENT/ROTATE,XPLUS,TO,LIN1,ABOUT,ZPLUS
ALIGNMENT/TRANS,YAXIS,CIR1
ALIGNMENT/TRANS,XAXIS,CIR1
ALIGNMENT/TRANS,ZAXIS,PLN1
ALIGNMENT/END
PLN3 =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,NONE,LEAST_SQR
THEO/<-1.5917,0.9,-1.5111>,<0,1,0>
ACTL/<-0.0318,0.8998,-2.2604>,<0.0000361,0.9999997,-0.0008271>
TARG/<-1.5917,0.9,-1.5111>,<0,1,0>
ANGLE VEC=<-1,0,0>,SQUARE
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=2,NUMROWS=2
SPACER=0
SHOW HITS=NO
PLN4 =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,NONE,LEAST_SQR
THEO/<-1.8917,-0.1576,-0.0709>,<-0.1736482,0,0.9848078>
ACTL/<-1.7992,-0.2975,-0.0538>,<-0.1721993,0.0010791,0.9850615>
TARG/<-1.8917,-0.1576,-0.0709>,<-0.1736482,0,0.9848078>
ANGLE VEC=<0.9848078,0,0.1736482>,SQUARE
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=2,NUMROWS=2
SPACER=0
SHOW HITS=NO
PLN5 =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,NONE,LEAST_SQR
THEO/<1.865,-0.1932,-0.0662>,<0.1736482,0,0.9848078&g t;
ACTL/<1.7915,0.083,-0.0524>,<0.1744341,0.0008077,0.98466 85>
TARG/<1.865,-0.1932,-0.0662>,<0.1736482,0,0.9848078&g t;
ANGLE VEC=<0.9848078,0,-0.1736482>,SQUARE
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=2,NUMROWS=2
SPACER=0
SHOW HITS=NO

[COLOR=#FF0000]CYL2 =FEAT/CONTACT/CYLINDER/DEFAULT,CARTESIAN,IN,FIXED_RAD
THEO/<2,-0.9,-0.75>,<0,-1,0>,0.5015,1.8
ACTL/<1.9985,-0.9,-0.7478>,<-0.0001875,-0.999827,0.018598>,0.5015,1.8
TARG/<2,-0.9,-0.75>,<0,-1,0>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=3,NUMLEVELS=2,DEPTH=0,END OFFSET=0,PITCH=0
SAMPLE METHOD=SAMPLE_FEATURE
SAMPLE FEATURE=NONE
FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
SHOW HITS=NO
CYL3 =FEAT/CONTACT/CYLINDER/DEFAULT,CARTESIAN,IN,FIXED_RAD
THEO/<1.5,-0.9,-3.65>,<0,-1,0>,0.5015,1.8
ACTL/<1.4977,-0.8999,-3.648>,<-0.0002088,-0.99965,0.0264531>,0.5015,1.8
TARG/<1.5,-0.9,-3.65>,<0,-1,0>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=3,NUMLEVELS=2,DEPTH=0,END OFFSET=0,PITCH=0
SAMPLE METHOD=SAMPLE_FEATURE
SAMPLE FEATURE=NONE
FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
SHOW HITS=NO
CYL4 =FEAT/CONTACT/CYLINDER/DEFAULT,CARTESIAN,IN,FIXED_RAD
THEO/<-1.5,-0.9,-3.65>,<0,-1,0>,0.5015,1.8
ACTL/<-1.5039,-0.9,-3.6485>,<0.0009411,-0.9999496,0.0099942>,0.5015,1.8
TARG/<-1.5,-0.9,-3.65>,<0,-1,0>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=3,NUMLEVELS=2,DEPTH=0,END OFFSET=0,PITCH=0
SAMPLE METHOD=SAMPLE_FEATURE
SAMPLE FEATURE=NONE
FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
SHOW HITS=NO
CYL5 =FEAT/CONTACT/CYLINDER/DEFAULT,CARTESIAN,IN,FIXED_RAD
THEO/<-2,-0.9,-0.75>,<0,-1,0>,0.5015,1.8
ACTL/<-2.0036,-0.9028,-0.7531>,<0.0014633,-0.999998,0.0013621>,0.5015,1.8
TARG/<-2,-0.9,-0.75>,<0,-1,0>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=3,NUMLEVELS=2,DEPTH=0,END OFFSET=0,PITCH=0
SAMPLE METHOD=SAMPLE_FEATURE
SAMPLE FEATURE=PLN2
FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
SHOW HITS=NO[/COLOR]


The results are coming in way out of tolerance and I know that they should not be. Mic'd the cylinders and they are in tolerance. The distance dimensions could be off slightly but nowhere near as far as the results are saying.

Attached Files
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  • So.... Cylinder 1 is being checked relative to plane 1. They appear to have the same nominal vector, but different nominals. Is there a reason you're checking a cylinder relative to the plane? A circle, yes, but not needed for a cylinder.

    Did you look at cylindricity of the cylinders graphically? You have a depth of zero, are you controlling that with the Z value of the cylinder? If yes, you really don't need the SAMPLE_FEATURE.
  • Circles are projected features, so the measurement will be based on the workplane (to simplify).

    Cylinders are 3D features, workplane independent.

    The factors that define a cylinder are - XYZ, which define the point where the axis of the cylinder crosses the plane it exists on, the vector (IJK) of the axis, and the length. PC-DMIS will create the cylinder along the entire length specified, and will attempt to measure it along the entire length.. You can change how far away from the "top" (XYZ) of the cylinder it starts by changing the depth, and how far away from the full length by changing the ending offset.

    I'll try to sketch up something and post it, that will be much more understandable.
Reply
  • Circles are projected features, so the measurement will be based on the workplane (to simplify).

    Cylinders are 3D features, workplane independent.

    The factors that define a cylinder are - XYZ, which define the point where the axis of the cylinder crosses the plane it exists on, the vector (IJK) of the axis, and the length. PC-DMIS will create the cylinder along the entire length specified, and will attempt to measure it along the entire length.. You can change how far away from the "top" (XYZ) of the cylinder it starts by changing the depth, and how far away from the full length by changing the ending offset.

    I'll try to sketch up something and post it, that will be much more understandable.
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