Iterative Alignments

**Matthew D. Hoedeman** · 08-15-2007, 05:43 PM

Code:

-A1-       =AUTO/SURFACE POINT,SHOWALLPARAMS = NO
            THEO/2130.038,826.67,1268.839,-0.0315039,0.9876686,-0.1533564
            ACTL/2129.919,827.065,1268.305,-0.030268,0.9888289,-0.1459495
            TARG/2130.038,826.67,1268.839,-0.0315039,0.9876686,-0.1533564
-A2-       =AUTO/SURFACE POINT,SHOWALLPARAMS = NO
            THEO/1997.789,835.839,1205.057,-0.0440184,0.9984169,-0.0350146
            ACTL/1997.578,835.735,1205.046,-0.0424951,0.9987181,-0.0275028
            TARG/1997.789,835.839,1205.057,-0.0440184,0.9984169,-0.0350146
-A3-       =AUTO/SURFACE POINT,SHOWALLPARAMS = NO
            THEO/1999.056,837.967,1264.31,-0.0440184,0.9984169,-0.0350146
            ACTL/1999.017,836.63,1264.332,-0.0424951,0.9987181,-0.0275028
            TARG/1999.056,837.967,1264.31,-0.0440184,0.9984169,-0.0350146
            CHECK/ 5,1
DATUM -B-  =AUTO/CIRCLE,SHOWALLPARAMS = YES,SHOWHITS = NO
            THEO/2124.507,844.361,1261.656,-0.0499994,0.9979875,-0.0389995,10.606,0
            ACTL/2124.431,844.812,1261.418,-0.0641689,0.9977902,-0.0172338,10.599,0
            TARG/2124.507,844.361,1261.656,-0.0499994,0.9979875,-0.0389995
            THEO_THICKNESS = 0,RECT,OUT,CIRCULAR,LEAST_SQR,ONERROR = NO,$
            AUTO MOVE = BOTH,DISTANCE = 75,RMEAS = None,None,None,$
            READ POS = NO,FIND HOLE = NO,REMEASURE = NO,$
            NUMHITS = 4,INIT = 0,PERM = 0,SPACER = 0.75,PITCH = 0,$
            START ANG = 0.065,END ANG = 0.065,DEPTH = -1,$
            ANGLE VEC = -0.9987498,-0.0499875,0
            MOVE/POINT,NORMAL,1923.433,910.027,1261.66
            TIP/T1A75B0, SHANKIJK=-0.001, 0.986, 0.165, ANGLE=0.26
-C1-       =AUTO/SURFACE POINT,SHOWALLPARAMS = NO
            THEO/1925.969,833.849,1238.813,-0.0039992,0.0659876,0.9978124
            ACTL/1926.084,832,1238.977,-0.0022942,0.0443081,0.9990153
            TARG/1925.969,833.849,1238.813,-0.0039992,0.0659876,0.9978124
            MOVE/POINT,NORMAL,1925.488,851.273,1243.991
            MOVE/POINT,NORMAL,1925.561,883.624,1240.703
            MOVE/POINT,NORMAL,1925.785,880.375,1206.969
            TIP/T1A90B0, SHANKIJK=0, 0.995, -0.096, ANGLE=179.738
            MOVE/POINT,NORMAL,1925.769,877.678,1215.272
            PREHIT/ 1
            RETRACT/ 1
-C2-       =AUTO/SURFACE POINT,SHOWALLPARAMS = NO
            THEO/1926.185,833.849,1231.39,0,-0.0139986,-0.999902
            ACTL/1926.281,832.157,1231.463,-0.0024431,0.0076521,-0.9999677
            TARG/1926.185,833.849,1231.39,0,-0.0139986,-0.999902
            MOVE/POINT,NORMAL,1926.298,833.657,1227.064
            MOVE/POINT,NORMAL,1926.295,915.12,1219.185
DATUM -C-  =FEAT/POINT,RECT
            THEO/1926.077,833.849,1235.102,0,0,1
            ACTL/1926.183,832.079,1235.22,-0.0799275,-0.0265755,0.9964464
            CONSTR/POINT,MID,-C1-,-C2-
            MOVE/POINT,NORMAL,1909.912,885.953,1233.462
BODY       =ALIGNMENT/START,RECALL:A1, LIST= YES
            ALIGNMENT/ITERATE
              PNT TARGET RAD = 0.2, START LABEL = , FIXTURE TOL = 0, ERROR LABEL = 
              MEAS ALL FEAT = ALWAYS ,MAX ITERATIONS = 99 ,LEVEL AXIS=YAXIS ,ROTATE AXIS=ZAXIS ,ORIGIN AXIS=XAXIS
            LEVEL = -A1-,-A2-,-A3-,,
            ROTATE = DATUM -B-,DATUM -C-,,
            ORIGIN = DATUM -B-,,
            ALIGNMENT/END
            MOVE/POINT,NORMAL,1918.145,833.822,1229.984
            MOVE/POINT,NORMAL,1916.52,888.029,1230.25
BODY       =VIEWSET/
            CHECK/ 3,1
            RETRACT/ 4
            RETRACT/ 2.5
            PREHIT/ 4
            RETRACT/ 2
-A4-       =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/2051.468,840.393,1267.089,-0.0440184,0.9984169,-0.0350146
            ACTL/2051.489,839.422,1267.117,-0.043804,0.9984173,-0.0352708
            TARG/2051.468,840.393,1267.089,-0.0440184,0.9984169,-0.0350146
            ACTL_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = BOTH,DISTANCE = 25
-A5-       =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/2035.997,837.48,1203.437,-0.0440184,0.9984169,-0.0350146
            ACTL/2036.022,837.537,1203.433,-0.043804,0.9984173,-0.0352708
            TARG/2035.997,837.48,1203.437,-0.0440184,0.9984169,-0.0350146
            ACTL_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = BOTH,DISTANCE = 35
-A6-       =AUTO/VECTOR POINT,SHOWALLPARAMS = YES
            THEO/1929.73,817.309,1256.362,-0.0500015,0.9890287,-0.139004
            ACTL/1929.911,818.481,1255.774,-0.0497873,0.9890038,-0.1392579
            TARG/1929.73,817.309,1256.362,-0.0500015,0.9890287,-0.139004
            ACTL_THICKNESS = 0,RECT,SNAP = NO,$
            AUTO MOVE = BOTH,DISTANCE = 35
BODY A1 A6 =ALIGNMENT/START,RECALL:BODY, LIST= YES
            ALIGNMENT/ITERATE
              PNT TARGET RAD = 0.5, START LABEL = , FIXTURE TOL = 0, ERROR LABEL = 
              MEAS ALL FEAT = ALWAYS ,MAX ITERATIONS = 99 ,LEVEL AXIS=YAXIS ,ROTATE AXIS=ZAXIS ,ORIGIN AXIS=XAXIS
            LEVEL = -A1-,-A2-,-A3-,-A4-,-A5-,-A6-,,
            ROTATE = DATUM -B-,DATUM -C-,,
            ORIGIN = DATUM -B-,,
            ALIGNMENT/END
            CHECK/ 3,1
            RETRACT/ 4
            RETRACT/ 2.5
            PREHIT/ 4
            RETRACT/ 2
REF-1      =AUTO/SURFACE POINT,SHOWALLPARAMS = NO
            THEO/1917.107,831.882,1220.441,-0.0509948,0.9978977,-0.0399959
            ACTL/1917.056,832.942,1220.394,-0.0512696,0.9978959,-0.0396883
            TARG/1917.107,831.882,1220.441,-0.0509948,0.9978977,-0.0399959
SCREW-1    =AUTO/CIRCLE,SHOWALLPARAMS = YES,SHOWHITS = NO
            THEO/1919.195,832.076,1222.225,-0.0509948,0.9978977,-0.0399959,3.9
            ACTL/1919.852,833.1,1222.094,-0.0355261,0.9983784,-0.0444806,3.94
            TARG/1919.195,832.076,1222.225,-0.0509948,0.9978977,-0.0399959
            ACTL_THICKNESS = 0,RECT,IN,CIRCULAR,LEAST_SQR,ONERROR = NO,$
            AUTO MOVE = BOTH,DISTANCE = 40,RMEAS = REF-1,REF-1,REF-1,$
            READ POS = NO,FIND HOLE = CENTER,REMEASURE = NO,$
            NUMHITS = 4,INIT = 3,PERM = 3,SPACER = 1,PITCH = 0,$
            START ANG = 0.11,END ANG = 0.11,DEPTH = 1.5,$
            ANGLE VEC = -0.9986994,-0.0509847,0
SCREW-2    =AUTO/CIRCLE,SHOWALLPARAMS = YES,SHOWHITS = NO
            THEO/2098.843,843.126,1263.557,-0.0509948,0.9978977,-0.0399959,3.614
            ACTL/2098.951,843.18,1263.778,-0.0818728,0.9964629,-0.0189365,3.95
            TARG/2098.843,843.126,1263.557,-0.0509948,0.9978977,-0.0399959
            ACTL_THICKNESS = 0,RECT,IN,CIRCULAR,LEAST_SQR,ONERROR = NO,$
            AUTO MOVE = BOTH,DISTANCE = 40,RMEAS = None,None,None,$
            READ POS = NO,FIND HOLE = CENTER,REMEASURE = NO,$
            NUMHITS = 4,INIT = 3,PERM = 3,SPACER = 1,PITCH = 0,$
            START ANG = 0,END ANG = 0,DEPTH = 1.5,$
            ANGLE VEC = -0.9986994,-0.0509847,0
            PREHIT/ 2



DIM LOC1= TRUE POSITION OF CIRCLE SCREW-1  UNITS=MM ,$
GRAPH=OFF  TEXT=OFF  MULT=10.00  OUTPUT=BOTH  DEV PERPEN CENTERLINE=ON  DISPLAY=DIAMETER
AX   NOMINAL     MEAS       +TOL       -TOL       BONUS       DEV      DEVANG     OUTTOL   
X    1919.195   1919.852                                       0.657                      
Z    1222.225   1222.094                                      -0.131                      
DF      3.900      3.940      0.150      0.150      0.190      0.040                 0.000 -----#---
TP        MMC                 1.000                 0.190      1.428      2.631      0.238 -------->
END OF DIMENSION LOC1
            RECALL/ALIGNMENT,INTERNAL,BODY
DIM LOC2= TRUE POSITION OF CIRCLE SCREW-1  UNITS=MM ,$
GRAPH=OFF  TEXT=OFF  MULT=10.00  OUTPUT=BOTH  DEV PERPEN CENTERLINE=ON  DISPLAY=DIAMETER
AX   NOMINAL     MEAS       +TOL       -TOL       BONUS       DEV      DEVANG     OUTTOL   
X    1919.195    195.053                                   -1724.142                      
Z    1222.225   -413.369                                   -1635.594                      
DF      3.900      3.940      0.150      0.150      0.190      0.040                 0.000 -----#---
TP        MMC                 1.000                 0.190   4937.058   -174.921   4935.868 -------->
END OF DIMENSION LOC2

OH, so much easier to read! Place the word CODE inside square brackets at the beginning of the code and the word /CODE in square brackets at the end of the code.

**Matthew D. Hoedeman** · 08-15-2007, 05:44 PM

Well, FIRST THING, I would NOT use duplicate names for anything, you have BODY for an alignment and BODY again for a view set. I am NOT saying this is the issue, but it is a bad habit to get into.

**Clay_Man** · 08-15-2007, 05:45 PM

Thanks I will next time

**Matthew D. Hoedeman** · 08-15-2007, 06:01 PM

Second issue (not saying it is the problem, but it is NOT a good thing) are all the MINUS signs and SPACES in the ID's. Numbers, letters and VERY FEW of the other 'symbols' on the keyboard can be used without problems. However, the MINUS sign IS a big "NO-NO". You can not every use a feature in a variable assignment if it has a minus sign in the ID. Think DOS, numbers and letters only, and you will not every have an ID problem.

Still looking at the rest.

**Paul Sarrach** · 08-15-2007, 06:08 PM

Why are you not taking prehits on your Datum -B-?

**Clay_Man** · 08-15-2007, 06:09 PM

Originally posted by Matthew D. Hoedeman View Post

Second issue (not saying it is the problem, but it is NOT a good thing) are all the MINUS signs and SPACES in the ID's. Numbers, letters and VERY FEW of the other 'symbols' on the keyboard can be used without problems. However, the MINUS sign IS a big "NO-NO". You can not every use a feature in a variable assignment if it has a minus sign in the ID. Think DOS, numbers and letters only, and you will not every have an ID problem.

Still looking at the rest.

Ok i have re labelled everything THK

**Clay_Man** · 08-15-2007, 06:11 PM

Originally posted by Paul Sarrach View Post

Why are you not taking prehits on your Datum -B-?

It is a cross + with a dia call out for datum B, no place for prehits

**Clay_Man** · 08-16-2007, 10:52 AM

Still need help???

Thanks to all

**Underspec** · 08-16-2007, 10:56 AM

Should be possible. But what is your problem?

**Clay_Man** · 08-16-2007, 11:05 AM

Originally posted by Underspec View Post

Should be possible. But what is your problem?

I dimension the same feature and get 2 very different reading, look at the results from Matt post
THKS

**Underspec** · 08-16-2007, 11:09 AM

Your theos for both alignments are different. And you are dimensioning the same feature from two different alignments. How can they not be different? Am I missing something here?

**Clay_Man** · 08-16-2007, 11:31 AM

Originally posted by Underspec View Post

Your theos for both alignments are different. And you are dimensioning the same feature from two different alignments. How can they not be different? Am I missing something here?

All I did was added 3 more points for datum A

**JamesMannes** · 08-16-2007, 11:38 AM

I noticed this...

Code:

BODY A1 A6 =ALIGNMENT/START,RECALL:BODY, LIST= YES
            ALIGNMENT/ITERATE
              PNT TARGET RAD = 0.5, START LABEL = , FIXTURE TOL = 0, ERROR LABEL = 
              MEAS ALL FEAT = ALWAYS ,MAX ITERATIONS = 99 ,LEVEL AXIS=YAXIS ,ROTATE AXIS=ZAXIS ,ORIGIN AXIS=XAXIS
            LEVEL = -A1-,-A2-,-A3-,-A4-,-A5-,-A6-,,
            ROTATE = DATUM -B-,DATUM -C-,,
            ORIGIN = DATUM -B-,,
            ALIGNMENT/END

Why are you leveling to 6 points?
It should be...

3 points level
2 points rotate
1 point origin

...now I know that it in a regular alignment that would not be true, but, I think that DMIS has a problem with more than the minimum number of points being used iteratively.

**Clay_Man** · 08-16-2007, 11:41 AM

A1 A2 a3 are from print, engineering add A4 A5 A6 as the frist 3 A,s are all to one side of the pary leaeving about 1/4 of the part with no datums

Iterative Alignments

Iterative Alignments

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