equate alignment???

[gage guru]

See attachments for details of what we are doing....

With the flange down we measure one half circle of all 20 holes.

We then break in program and measure the other half of the circle all 20 holes. Note after the flip we manuall align and then DCC align making sure that the points we take are the same as the original alignment(i.e. on the plane especially).

after the DCC we do an equate alignment of the second aglinment to the original alignment so that everything is the same.

we then want to create a cylinder from the first circle and the second, but I get a cylinder that is not in the correct vector direction.

CYLH1 =FEAT/CYLINDER,RECT,IN,LEAST_SQR
THEO/0.037,39.889,2.858,-0.0048663,-0.1880255,0.9821521,21.638,20.613
ACTL/0.04,44.165,7.085,-0.2319038,-0.5094428,0.8286668,15.658,8.321
CONSTR/CYLINDER,BF,CIR015LOWH1,CIR015HIGHH1,,

Note the diameter should be 8mm and the vector should be in this case in the y direction.

Well we are at a block in the raod anyone have some suggestions as to what we are doing wrong.....

Program is very long code so hopefully I can desribe enough to avoid having to put lots of the program out here....thanks alot!!!!

[Don Ruggieri]

Try this

First, my disclaimer

1) Save your program
2) make 6 copies for backup

Okay, that said, go into your program where your first set of DCC features ends and the new manual features start. Before the 2nd half of this program, insert an Alignment Reset (RECALL/ALIGNMENT,INTERNAL, or RECALL/ALIGNMENT,INTERNAL,STARTUP) to get the system back to its original machine coordinates.

Now run the program as you did before, and tell me if it works (it should).

[gage guru]

Ok will try - had a storm that knocked everything out.....will let you know...thanks!!!

[gage guru]

Ok did as told and here is what the circles when called out dimension out to be. Even though the graphics show the features are correct visually(in the same Z height) the reported values do not.

DIM CHAR001= LOCATION OF CIRCLE CIR015LOWH1 UNITS=MM ,$
GRAPH=OFF TEXT=OFF MULT=10.00 OUTPUT=BOTH
AX MEAS NOMINAL +TOL -TOL DEV OUTTOL
X 0.034 -70.370 0.500 0.500 70.405 69.905 -------->
Y 52.000 20.748 0.500 0.500 31.252 30.752 -------->
Z 10.832 243.955 0.500 0.500 -233.124 232.624 <--------
D 7.987 8.000 0.500 0.500 -0.013 0.000 ----#----
END OF DIMENSION CHAR001
DIM CHAR002= LOCATION OF CIRCLE CIR015HIGHH1 UNITS=MM ,$
GRAPH=OFF TEXT=OFF MULT=10.00 OUTPUT=BOTH
AX MEAS NOMINAL +TOL -TOL DEV OUTTOL
X -0.081 0.000 0.500 0.500 -0.081 0.000 ---#-----
Y 48.500 48.500 0.500 0.500 0.000 0.000 ----#----
Z 10.777 11.000 0.500 0.500 -0.223 0.000 --#------
D 7.997 8.000 0.500 0.500 -0.003 0.000 ----#----
END OF DIMENSION CHAR002

Well I will check back in a little to see what the experts say!! Thanks!!!

[gage guru]

Oh also if I try to create a cylinder from the 2 circles I get a cylinder that is angled - not straight as to how they physically are on the part. Yes I know that is because of the z differences, but I can create a line and it is correct. Does not really make sense right now.....

[Don Ruggieri]

More Info??

Gage Guru,

You showed what the constructed cylinder was after your first attempt. You showed us what the measured circles were after the modifcation I recommended. These two cannot really be compared directly.

Please paste/post the original circle values before the change was made so we can see and compare them to the ones you just posted, after the fix.

Also, what axis are these cylinders supposed to be in? If the circles were in the XY plane, then the Z values should be different. . .

I noticed that the nominals for circle CIR015LOWH1 are very different from the measured values. Are you using CAD? Do you know why this is? I assume it ie because of the equate alignment, but what were they before the equate alignment?