Best way to probe and dimension this position callout?

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  • Best way to probe and dimension this position callout?

    Hello. I have a drawing that calls out a position of a slot length(distance between two circles) but im not really sure how to go about probing and dimensioning this callout? Here is a snippit of the drawing callout. Any help would be appreciated. Its the .628" dimension with the .01" position to A and B.
    Thank you.
    Attached Files

  • #2
    Position Tolerance zone is cylindrical not planar.

    B&S CHAMELEON/PCDMIS CAD++ V2011

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    • #3
      Originally posted by dph51 View Post
      Position Tolerance zone is cylindrical not planar.
      That's what i was thinking as well. thank you.

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      • #4
        I would do this..

        Code:
        RECALL/ALIGNMENT,INTERNAL,ALI_AB
        PLN_YP =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,NONE,LEAST_SQR
        THEO/<0.0495,0.3937,-0.15>,<0,-1,0>
        ACTL/<0.0495,0.3937,-0.15>,<0,-1,0>
        TARG/<0.0495,0.3937,-0.15>,<0,-1,0>
        ANGLE VEC=<1,0,0>,RADIAL
        SHOW FEATURE PARAMETERS=NO
        SHOW CONTACT PARAMETERS=NO
        PLN_YM =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,NONE,LEAST_SQR
        THEO/<0.0495,-0.3937,-0.15>,<0,1,0>
        ACTL/<0.0495,-0.3937,-0.15>,<0,1,0>
        TARG/<0.0495,-0.3937,-0.15>,<0,1,0>
        ANGLE VEC=<1,0,0>,RADIAL
        SHOW FEATURE PARAMETERS=NO
        SHOW CONTACT PARAMETERS=NO
        PLN_CTR =FEAT/PLANE,CARTESIAN,TRIANGLE,NO
        THEO/<0.0495,0,-0.15>,<0,-1,0>
        ACTL/<0.0495,0,-0.15>,<0,-1,0>
        CONSTR/PLANE,MID,PLN_YP,PLN_YM
        CIR_XM =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
        THEO/<-0.7874,0,0>,<0,0,1>,0.7874
        ACTL/<-0.7874,0,0>,<0,0,1>,0.7874
        TARG/<-0.7874,0,0>,<0,0,1>
        START ANG=90,END ANG=270
        ANGLE VEC=<1,0,0>
        DIRECTION=CCW
        SHOW FEATURE PARAMETERS=NO
        SHOW CONTACT PARAMETERS=NO
        CIR_XP =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
        THEO/<0.7874,0,0>,<0,0,1>,0.7874
        ACTL/<0.7874,0,0>,<0,0,1>,0.7874
        TARG/<0.7874,0,0>,<0,0,1>
        START ANG=270,END ANG=450
        ANGLE VEC=<1,0,0>
        DIRECTION=CCW
        SHOW FEATURE PARAMETERS=NO
        SHOW CONTACT PARAMETERS=NO
        PNT_CIR_CTR=FEAT/POINT,CARTESIAN,NO
        THEO/<0,0,0>,<0,0,1>
        ACTL/<0,0,0>,<0,0,1>
        CONSTR/POINT,MID,CIR_XM,CIR_XP
        FORMAT/TEXT,OPTIONS, ,HEADINGS,SYMBOLS, ;MEAS, , , , , ,
        DIM DIST1= 2D DISTANCE FROM CIRCLE CIR_XM TO CIRCLE CIR_XP PAR TO XAXIS,SUB_RADIUS UNITS=IN,$
        GRAPH=OFF TEXT=OFF MULT=10.00 OUTPUT=[B]NONE[/B]
        AX MEAS
        M 0.7874 ----#----
        FORMAT/TEXT,OPTIONS, ,HEADINGS,SYMBOLS, ;MEAS,NOM,TOL,DEV,OUTTOL, ,
        SLOT =GENERIC/CIRCLE,DEPENDENT,CARTESIAN,OUT,$
        NOM/XYZ,<PNT_CIR_CTR.TX,PLN_CTR.TY,-0.15*1>,$
        MEAS/XYZ,<PNT_CIR_CTR.X,PLN_CTR.Y,-0.15*1>,$
        NOM/IJK,<0,0,1>,$
        MEAS/IJK,<0,0,1>,$
        DIAMETER/0.787,DIST1.M.MEAS
        DIM LOC1= POSITION OF CIRCLE SLOT UNITS=IN ,$
        GRAPH=OFF TEXT=OFF MULT=10.00 OUTPUT=[B]BOTH[/B] FIT TO DATUMS=OFF DEV PERPEN CENTERLINE=OFF DISPLAY=DIAMETER
        AX MEAS NOMINAL +TOL -TOL BONUS DEV OUTTOL
        X 0.0000 0.0000 0.0000
        Y 0.0000 0.0000 0.0000
        DF 0.7874 0.7870 0.0050 0.0050 0.0046 0.0004 0.0000 ----#----
        TP 0.0000 MMC 0.0100 0.0046 0.0000 0.0000 #--------
        END OF DIMENSION LOC1
        1) Create AB alignment. While having that alignment recalled...

        2) Create geometry on the inside of the slot

        3) Create a CONSTRUCTED point AND plane from the measured geometry

        4) Create a distance dimension (output NONE!!)

        5) Create a generic feature (circle that we're calling your slot). Use the constructed geometry (step 3) to drive the location & the distance dimension's output (step 4) to drive the size.

        6) Report the TP of SLOT (turn output back on!!!).


        picgrp.JPG
        Last edited by DAN_M; 03-09-2021, 08:00 AM.
        SF7107(PCD), SF454(PCD), 152614(Quindos), 9159(Quindos), 7107(Quindos), B&S Manual, M&M Gear Checker

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        • #5
          CF : contacting feature, from ISO 5459 ?

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