Xact Measure problem

Has anyone had problems with Xact Measure TP dims? I have various parts with MMC on the DF as well as the Datums. As may be expected the DF and the datums all have different size tolerances. When setting up the dimension I tolerance them correctly, but once created the datum tolerances default to the DF tolerance. I have assigned variables for tolerances with little success. In fact I can type in the correct tolerance right into the dimension in the edit window and.. pfft... it reverts back to the DF tol. I am attempting to use this "improved" method because the hexagoon's say that legacy TP dims don't account for MMC on the datums correctly. WTF!

I am running V4.2mr2, but I have seen this in 4.1 and 4.2mr1.

Parents

Matthew D. Hoedeman over 17 years ago

Thanks for your help everyone. For brevity's sake let me assure you this not PEBKAC (Problem Exists Between Keyboard And Chair). This is straight up buggy shite.

I like that one! PEBKAC, I'll have to remember that.

What you COULD try to do is assign the MMC bonus from the datum feature and add it to the TP tolerance of the dimension feature. When you look at it in the edit window, command mode, you will see the math, but in the report window, you will see the answer. At least, that is the way it works in V3.7.

DIM D054= TRUE POSITION OF CIRCLE H047  UNITS=MM ,$
GRAPH=OFF  TEXT=OFF  MULT=1.00  OUTPUT=BOTH  DEV PERPEN CENTERLINE=ON  DISPLAY=DIAMETER
AX   NOMINAL     +TOL       -TOL       BONUS      MEAS        DEV      OUTTOL   
X    6118.786                                    6119.299      0.513           
Y     -99.606                                     -99.046      0.560           
DF     18.700      0.000      0.500      0.412     18.612     -0.088      0.000 -------#-
TP        MMC      3.000                 0.412                 1.519      0.000 ----#----
END OF DIMENSION D054
            ASSIGN/V1 = D054.DF.BTOL
DIM D055= TRUE POSITION OF CIRCLE H048  UNITS=MM ,$
GRAPH=OFF  TEXT=OFF  MULT=1.00  OUTPUT=BOTH  DEV PERPEN CENTERLINE=ON  DISPLAY=DIAMETER
AX   NOMINAL     +TOL       -TOL       BONUS      MEAS        DEV      OUTTOL   
X    6118.786                                    6119.283      0.497           
Y      75.394                                      75.878      0.484           
DF     18.700      0.000      0.500      0.397     18.597     -0.103      0.000 -------#-
TP        MMC  3+V1                 0.397                 1.388      0.000 ---#-----
END OF DIMENSION D055

and then in the report window it will look like this:

DIM D054= TRUE POSITION OF CIRCLE H047  UNITS=MM
AX   NOMINAL     +TOL       -TOL       BONUS      MEAS        DEV      OUTTOL   
X    6118.786                                    6119.299      0.513           
Y     -99.606                                     -99.046      0.560           
DF     18.700      0.000      0.500      0.412     18.612     -0.088      0.000 -------#-
TP        MMC      3.000                 0.412                 1.519      0.000 ----#----
 
DIM D055= TRUE POSITION OF CIRCLE H048  UNITS=MM
AX   NOMINAL     +TOL       -TOL       BONUS      MEAS        DEV      OUTTOL   
X    6118.786                                    6119.283      0.497           
Y      75.394                                      75.878      0.484           
DF     18.700      0.000      0.500      0.397     18.597     -0.103      0.000 -------#-
TP        MMC      3.412                 0.397                 1.388      0.000 ---#-----

Does that help?

Reply

Matthew D. Hoedeman over 17 years ago

Thanks for your help everyone. For brevity's sake let me assure you this not PEBKAC (Problem Exists Between Keyboard And Chair). This is straight up buggy shite.

DIM D054= TRUE POSITION OF CIRCLE H047  UNITS=MM ,$
GRAPH=OFF  TEXT=OFF  MULT=1.00  OUTPUT=BOTH  DEV PERPEN CENTERLINE=ON  DISPLAY=DIAMETER
AX   NOMINAL     +TOL       -TOL       BONUS      MEAS        DEV      OUTTOL   
X    6118.786                                    6119.299      0.513           
Y     -99.606                                     -99.046      0.560           
DF     18.700      0.000      0.500      0.412     18.612     -0.088      0.000 -------#-
TP        MMC      3.000                 0.412                 1.519      0.000 ----#----
END OF DIMENSION D054
            ASSIGN/V1 = D054.DF.BTOL
DIM D055= TRUE POSITION OF CIRCLE H048  UNITS=MM ,$
GRAPH=OFF  TEXT=OFF  MULT=1.00  OUTPUT=BOTH  DEV PERPEN CENTERLINE=ON  DISPLAY=DIAMETER
AX   NOMINAL     +TOL       -TOL       BONUS      MEAS        DEV      OUTTOL   
X    6118.786                                    6119.283      0.497           
Y      75.394                                      75.878      0.484           
DF     18.700      0.000      0.500      0.397     18.597     -0.103      0.000 -------#-
TP        MMC  3+V1                 0.397                 1.388      0.000 ---#-----
END OF DIMENSION D055

and then in the report window it will look like this:

DIM D054= TRUE POSITION OF CIRCLE H047  UNITS=MM
AX   NOMINAL     +TOL       -TOL       BONUS      MEAS        DEV      OUTTOL   
X    6118.786                                    6119.299      0.513           
Y     -99.606                                     -99.046      0.560           
DF     18.700      0.000      0.500      0.412     18.612     -0.088      0.000 -------#-
TP        MMC      3.000                 0.412                 1.519      0.000 ----#----
 
DIM D055= TRUE POSITION OF CIRCLE H048  UNITS=MM
AX   NOMINAL     +TOL       -TOL       BONUS      MEAS        DEV      OUTTOL   
X    6118.786                                    6119.283      0.497           
Y      75.394                                      75.878      0.484           
DF     18.700      0.000      0.500      0.397     18.597     -0.103      0.000 -------#-
TP        MMC      3.412                 0.397                 1.388      0.000 ---#-----

Does that help?

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