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Runout Experts needed...

Ray Harvey
I have 2 circles that I scanned. I drew a line between the 2 and that is being used as my Datum. Can runout be measured using a line drawn between to circles? I was told that using cones makes it nearly impossible to get good runout data.
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  • Yes. I do this a lot. But not through just two circles.

    I have many turned parts where -A- is an outside diameter, -B- is a different sized outside diameter, and there is GD&T all over my print that says '"Runout of a certain diameter A-B".

    I will measure three individual autocircles on -A-. Three individual autocircles on -B-. Put a point at the center of each circle. Construct a 3D line through the six points. Then..Insert an alignment....Level to Line A-B..Translate X and Y to Line A-B, Translate Z to a plane/point where I want it.

    If you want to see some sample code LMK.
Reply
  • Yes. I do this a lot. But not through just two circles.

    I have many turned parts where -A- is an outside diameter, -B- is a different sized outside diameter, and there is GD&T all over my print that says '"Runout of a certain diameter A-B".

    I will measure three individual autocircles on -A-. Three individual autocircles on -B-. Put a point at the center of each circle. Construct a 3D line through the six points. Then..Insert an alignment....Level to Line A-B..Translate X and Y to Line A-B, Translate Z to a plane/point where I want it.

    If you want to see some sample code LMK.
Children
  • in reply to DAN_M
    Sure. I will try this out and see if this works. If you have some samples I would appreciate it. That actually makes a lot of sense to do it that way...

    Thanks….
  • in reply to DAN_M 
    COMMENT/OPER,NO,FULL SCREEN=NO,AUTO-CONTINUE=NO,
            Once you press OKAY to this message....

            Measure a circle (4 hits) in the side hole
            COMMENT/OPER,NO,FULL SCREEN=NO,AUTO-CONTINUE=NO,
            Press OKAY for CNC Measurement
            MODE/MANUAL
            WORKPLANE/XPLUS
CIR_3PLACE_MANUAL=FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
            THEO/<0.55,-0.486,-3.38>,<1,0,0>,0.2475
            ACTL/<0.55,-0.486,-3.38>,<1,0,0>,0.2475
            TARG/<0.55,-0.486,-3.38>,<1,0,0>
            START ANG=0,END ANG=360
            ANGLE VEC=<0,0,-1>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
            MODE/DCC
CYL_3PLACE_CNC=FEAT/CONTACT/CYLINDER/DEFAULT,CARTESIAN,IN,LEAST_SQR
            THEO/<0.585,-0.486,-3.38>,<1,0,0>,0.2475,0.075
            ACTL/<0.585,-0.486,-3.38>,<1,0,0>,0.2475,0.075
            TARG/<0.585,CIR_3PLACE_MANUAL.Y+0,CIR_3PLACE_MANUAL.Z+0>,<1,0,0>
            START ANG=0,END ANG=360
            ANGLE VEC=<0,0,-1>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
            WORKPLANE/ZPLUS
A3         =ALIGNMENT/START,RECALL:STARTUP,LIST=YES
              ALIGNMENT/LEVEL,ZPLUS,PLN_Z1
              ALIGNMENT/ROTATE,XPLUS,TO,CYL_3PLACE_CNC,ABOUT,ZPLUS
              ALIGNMENT/TRANS,XAXIS,CIR_XY2
              ALIGNMENT/TRANS,YAXIS,CIR_XY2
              ALIGNMENT/TRANS,ZAXIS,PLN_Z1
            ALIGNMENT/END
            MOVE/POINT,NORMAL,<1.5,-0.486,-3.38>
            MOVE/POINT,NORMAL,<1.5,-0.486,4>
            TIP/T1A45B180, SHANKIJK=0, -0.7071, 0.7071, ANGLE=180
RADH1      =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
            THEO/<0,0,-0.875>,<0,0,1>,2.3781,0
            ACTL/<0,0,-0.875>,<0,0,1>,2.3781,0
            TARG/<0,0,-0.875>,<0,0,1>
            START ANG=-2.5,END ANG=182.5
            ANGLE VEC=<1,0,0>
            DIRECTION=CW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
RADH2      =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
            THEO/<0,0,-1.1>,<0,0,1>,2.3781,0
            ACTL/<0,0,-1.1>,<0,0,1>,2.3781,0
            TARG/<0,0,-1.1>,<0,0,1>
            START ANG=182.5,END ANG=-2.5
            ANGLE VEC=<1,0,0>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
            MOVE/INCREMENT,<0.25,0,0>
RADG1      =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
            THEO/<0,0,-3.8>,<0,0,1>,2.4027,0
            ACTL/<0,0,-3.8>,<0,0,1>,2.4027,0
            TARG/<0,0,-3.8>,<0,0,1>
            START ANG=-2.5,END ANG=182.5
            ANGLE VEC=<1,0,0>
            DIRECTION=CW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
RADG2      =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
            THEO/<0,0,-4.5>,<0,0,1>,2.4027,0
            ACTL/<0,0,-4.5>,<0,0,1>,2.4027,0
            TARG/<0,0,-4.5>,<0,0,1>
            START ANG=182.5,END ANG=-2.5
            ANGLE VEC=<1,0,0>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
RADG3      =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
            THEO/<0,0,-5.2>,<0,0,1>,2.4027,0
            ACTL/<0,0,-5.2>,<0,0,1>,2.4027,0
            TARG/<0,0,-5.2>,<0,0,1>
            START ANG=-2.5,END ANG=182.5
            ANGLE VEC=<1,0,0>
            DIRECTION=CW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
            MOVE/INCREMENT,<0,-0.55,0>
PNTF1      =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
            THEO/<-1.1172,-0.645,-5.34>,<0,0,1>
            ACTL/<-1.1172,-0.645,-5.34>,<0,0,1>
            TARG/<-1.1172,-0.645,-5.34>,<0,0,1>
            SNAP=NO
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
            MOVE/INCREMENT,<0,-0.645,0>
PNTF2      =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
            THEO/<0,-1.29,-5.34>,<0,0,1>
            ACTL/<0,-1.29,-5.34>,<0,0,1>
            TARG/<0,-1.29,-5.34>,<0,0,1>
            SNAP=NO
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
            MOVE/INCREMENT,<1.1172,0,0>
PNTF3      =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
            THEO/<1.1172,-0.645,-5.34>,<0,0,1>
            ACTL/<1.1172,-0.645,-5.34>,<0,0,1>
            TARG/<1.1172,-0.645,-5.34>,<0,0,1>
            SNAP=NO
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
            MOVE/POINT,NORMAL,<PNTF3.X+0.1,PNTF3.Y-0.1,1>
            TIP/T1A45B0, SHANKIJK=0, 0.7071, 0.7071, ANGLE=0
RADH3      =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
            THEO/<0,0,-0.875>,<0,0,1>,2.3781,0
            ACTL/<0,0,-0.875>,<0,0,1>,2.3781,0
            TARG/<0,0,-0.875>,<0,0,1>
            START ANG=2.5,END ANG=-182.5
            ANGLE VEC=<1,0,0>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
RADH4      =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
            THEO/<0,0,-1.1>,<0,0,1>,2.3781,0
            ACTL/<0,0,-1.1>,<0,0,1>,2.3781,0
            TARG/<0,0,-1.1>,<0,0,1>
            START ANG=177.5,END ANG=362.5
            ANGLE VEC=<1,0,0>
            DIRECTION=CW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
            MOVE/INCREMENT,<0.25,0,0>
RADG4      =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
            THEO/<0,0,-3.8>,<0,0,1>,2.4027,0
            ACTL/<0,0,-3.8>,<0,0,1>,2.4027,0
            TARG/<0,0,-3.8>,<0,0,1>
            START ANG=2.5,END ANG=-182.5
            ANGLE VEC=<1,0,0>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
RADG5      =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
            THEO/<0,0,-4.5>,<0,0,1>,2.4027,0
            ACTL/<0,0,-4.5>,<0,0,1>,2.4027,0
            TARG/<0,0,-4.5>,<0,0,1>
            START ANG=177.5,END ANG=362.5
            ANGLE VEC=<1,0,0>
            DIRECTION=CW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
RADG6      =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,OUT,LEAST_SQR
            THEO/<0,0,-5.2>,<0,0,1>,2.4027,0
            ACTL/<0,0,-5.2>,<0,0,1>,2.4027,0
            TARG/<0,0,-5.2>,<0,0,1>
            START ANG=2.5,END ANG=-182.5
            ANGLE VEC=<1,0,0>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
            MOVE/INCREMENT,<0,0.55,0>
PNTF4      =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
            THEO/<-1.1172,0.645,-5.34>,<0,0,1>
            ACTL/<-1.1172,0.645,-5.34>,<0,0,1>
            TARG/<-1.1172,0.645,-5.34>,<0,0,1>
            SNAP=NO
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
            MOVE/INCREMENT,<0,0.645,0>
PNTF5      =FEAT/CONTACT/VECTOR POINT/DEFAULT,CARTESIAN
            THEO/<0,1.29,-5.34>,<0,0,1>
            ACTL/<0,1.29,-5.34>,<0,0,1>
            TARG/<0,1.29,-5.34>,<0,0,1>
            SNAP=NO
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
            MOVE/INCREMENT,<1.1172,0,0>
  • in reply to DAN_M 
    pntf6      =feat/contact/vector point/default,cartesian
            theo/<1.1172,0.645,-5.34>,<0,0,1>
            actl/<1.1172,0.645,-5.34>,<0,0,1>
            targ/<1.1172,0.645,-5.34>,<0,0,1>
            snap=no
            show feature parameters=no
            show contact parameters=no
pln_f      =feat/plane,cartesian,triangle,no,least_sqr
            theo/<0,0,-5.34>,<0,0,1>
            actl/<0,0,-5.34>,<0,0,1>
            constr/plane,bf,pntf1,pntf2,pntf3,pntf4,pntf5,pntf6,,
            outlier_removal/off,3
            filter/off,wavelength=0
scn1       =feat/set,cartesian
            theo/<0,0,-5.2>,<0,0,1>
            actl/<0,0,-5.2>,<0,0,1>
            constr/set,basic,radg3.hit[1..5],radg6.hit[1..5],,
cir_g_bot  =feat/circle,cartesian,out,least_sqr,no
            theo/<0,0,-5.2>,<0,0,1>,2.4027
            actl/<0,0,-5.2>,<0,0,1>,2.4027
            constr/circle,bf,2d,scn1,,
            outlier_removal/off,3
            filter/off,upr=0
pnt_g_bot  =feat/point,cartesian,no
            theo/<0,0,-5.2>,<0,0,1>
            actl/<0,0,-5.2>,<0,0,1>
            constr/point,cast,cir_g_bot
scn4       =feat/set,cartesian
            theo/<0,0,-4.5>,<0,0,1>
            actl/<0,0,-4.5>,<0,0,1>
            constr/set,basic,radg2.hit[1..5],radg5.hit[1..5],,
cir_g_ctr  =feat/circle,cartesian,out,least_sqr,no
            theo/<0,0,-4.5>,<0,0,1>,2.4027
            actl/<0,0,-4.5>,<0,0,1>,2.4027
            constr/circle,bf,2d,scn4,,
            outlier_removal/off,3
            filter/off,upr=0
pnt_g_ctr  =feat/point,cartesian,no
            theo/<0,0,-4.5>,<0,0,1>
            actl/<0,0,-4.5>,<0,0,1>
            constr/point,cast,cir_g_ctr
scn7       =feat/set,cartesian
            theo/<0,0,-3.8>,<0,0,1>
            actl/<0,0,-3.8>,<0,0,1>
            constr/set,basic,radg1.hit[1..5],radg4.hit[1..5],,
cir_g_top  =feat/circle,cartesian,out,least_sqr,no
            theo/<0,0,-3.8>,<0,0,1>,2.4027
            actl/<0,0,-3.8>,<0,0,1>,2.4027
            constr/circle,bf,2d,scn7,,
            outlier_removal/off,3
            filter/off,upr=0
pnt_g_top  =feat/point,cartesian,no
            theo/<0,0,-3.8>,<0,0,1>
            actl/<0,0,-3.8>,<0,0,1>
            constr/point,cast,cir_g_top
cyl_g      =feat/cylinder,cartesian,out,least_sqr,no
            theo/<0,0,-4.5>,<0,0,1>,2.4027,1.4
            actl/<0,0,-4.5>,<0,0,1>,2.4027,1.4
            constr/cylinder,bf,cir_g_bot,cir_g_ctr,cir_g_top,,
scn10      =feat/set,cartesian
            theo/<0,0,-1.1>,<0,0,1>
            actl/<0,0,-1.1>,<0,0,1>
            constr/set,basic,radh2.hit[1..5],radh4.hit[1..5],,
cir_h_bot  =feat/circle,cartesian,out,least_sqr,no
            theo/<0,0,-1.1>,<0,0,1>,2.3781
            actl/<0,0,-1.1>,<0,0,1>,2.3781
            constr/circle,bf,2d,scn10,,
            outlier_removal/off,3
            filter/off,upr=0
pnt_h_bot  =feat/point,cartesian,no
            theo/<0,0,-1.1>,<0,0,1>
            actl/<0,0,-1.1>,<0,0,1>
            constr/point,cast,cir_h_bot
scn13      =feat/set,cartesian
            theo/<0,0,-0.875>,<0,0,1>
            actl/<0,0,-0.875>,<0,0,1>
            constr/set,basic,radh1.hit[1..5],radh3.hit[1..5],,
cir_h_top  =feat/circle,cartesian,out,least_sqr,no
            theo/<0,0,-0.875>,<0,0,1>,2.3781
            actl/<0,0,-0.875>,<0,0,1>,2.3781
            constr/circle,bf,2d,scn13,,
            outlier_removal/off,3
            filter/off,upr=0
pnt_h_top  =feat/point,cartesian,no
            theo/<0,0,-0.875>,<0,0,1>
            actl/<0,0,-0.875>,<0,0,1>
            constr/point,cast,cir_h_top
cyl_h      =feat/cylinder,cartesian,out,least_sqr,no
            theo/<0,0,-0.9875>,<0,0,1>,2.3781,0.225
            actl/<0,0,-0.9875>,<0,0,1>,2.3781,0.225
            constr/cylinder,bf,cir_h_bot,cir_h_top,,
            workplane/yminus
lin_gh     =feat/line,cartesian,unbounded,no
            theo/<0,0,-5.2>,<0,0,1>
            actl/<0,0,-5.2>,<0,0,1>
            constr/line,bf,3d,pnt_g_bot,pnt_g_ctr,pnt_g_top,pnt_h_bot,pnt_h_top,,
            outlier_removal/off,3
            filter/off,wavelength=0
            workplane/zplus
a4         =alignment/start,recall:startup,list=yes
              alignment/level,zplus,pln_f
              alignment/rotate,xplus,to,cyl_3place_cnc,about,zplus
              alignment/trans,xaxis,lin_gh
              alignment/trans,yaxis,lin_gh
              alignment/trans,zaxis,pln_f
            alignment/end
a5         =alignment/start,recall:startup,list=yes
              alignment/level,zplus,lin_gh
              alignment/trans,xaxis,lin_gh
              alignment/trans,yaxis,lin_gh
              alignment/trans,zaxis,pln_f
            alignment/end
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