POINTS

[B. Jacobs]

I need to create a point where a circle and a plane meet. I have tried everything I can think of. The point should be at the tangent point of the circle and plane. Any thought's on how I might do this.
Thanks

[\v/inston]

did you try to construct a pierce point?

[JIM HARRIS]

Try a cast point

[B. Jacobs]

Yes I did. I tried cast, drop, pierce, and all the other ones. Don't know what I am doing wrong.

[Schrocknroll]

To add to Winston's reply, measure a line on the surface. Then construct a pierce point from the line and circle. If the point is on the opposite side of the circle than you want, construct a reverse line from the original line then pierce the reverse line and the circle.

In some older versions, you need to construct a cylinder from the circle(cast) then do the above.

[ufo_pilot]

I have done this with Generic points a few times
( just offset by the radius in the correct axis)


TANGENT = GENERIC/POINT
NOM/XYZ,1000, 0, 250
MEAS/XYZ, CIR1.X+CIR1.R, CIR1.Y, CIR1.Z
NOM/IJK, 1,0,0
MEAS/IJK, 1,0,0

[BSchwark]

Hate to ask, but is the circle in a different work plane then the plane you wish to construct points with at?


BS

[B. Jacobs]

I don't believe they are. I am still fairly new to this. I did some of the things mentioned here and started getting the results I was looking for. I created lines from the plane then did a peirce point to the circle. That seemed to do the trick. Thanks for all the help.

[R. Farr]

I have done this with Generic points a few times
( just offset by the radius in the correct axis)


TANGENT = GENERIC/POINT
NOM/XYZ,1000, 0, 250
MEAS/XYZ, CIR1.X+CIR1.R, CIR1.Y, CIR1.Z
NOM/IJK, 1,0,0
MEAS/IJK, 1,0,0

Would you first have to origin to the circle and rotate to the line for this to work?

[jjewell]

Boy, the members are getting younger in here all the time....LOL

Ref R.Farr

[John Kingston]

Boy, the members are getting younger in here all the time....LOL

Ref R.Farr

No Jim, You are just getting older........LOL

[William Johnson]

If the plane and circle are in the same workplane measure the circle as a cylinder then construct a pierce point from your cylinder and plane.

[ufo_pilot]

I have tried to upload a screenshot from dmis, but I don't think it worked ( or maybe it worked twice...hmmm) anyhow,
I have use the last circle I just measured in a prg for this screenshot.
You can create it as a point or a line, whichever suites your needs at this time
(I may have to practice my uploading skills - never used it before)


well, I got the picture in, but the quality is sooooo poor, it's living in a shoebox!


TANGENT =GENERIC/POINT,DEPENDENT,RECT,$
NOM/XYZ,0,46.562,0,$
MEAS/XYZ,15R_METAL.X,15R_METAL.Y+15R_METAL.R,15R_METAL. Z,$
NOM/IJK,0,0,1,$
MEAS/IJK,0,0,1
DIM TANGENT1= LOCATION OF POINT TANGENT UNITS=MM ,$
GRAPH=OFF TEXT=OFF MULT=1.00 OUTPUT=BOTH
AX NOMINAL MEAS +TOL -TOL DEV OUTTOL
Y 46.562 46.562 0.500 0.500 0.000 0.000 ----#----
END OF DIMENSION TANGENT1
TANGEN_LINE=FEAT/LINE,RECT,UNBND
THEO/0,46.562,0,0,0,1
ACTL/0.056,46.562,-0.27,0,0,1
CONSTR/LINE,CAST,TANGENT,46.562
DIM TANGENT2= LOCATION OF LINE TANGEN_LINE UNITS=MM ,$
GRAPH=OFF TEXT=OFF MULT=1.00 OUTPUT=BOTH
AX NOMINAL MEAS +TOL -TOL DEV OUTTOL
Y 46.562 46.562 0.500 0.500 0.000 0.000 ----#----
END OF DIMENSION TANGENT2

[R. Farr]

Boy, the members are getting younger in here all the time....LOL

Ref R.Farr
__________________
Jim Jewell
Metrology Solutions Inc.
[email protected]

Jim,

You can't really tell but I'm on Santa's lap. I got a big boy truck for Christmas.