Creating an Offset Plane in 4.1?

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  • Creating an Offset Plane in 4.1?

    I have three target points on a part and I want to create an off set plane out of them. The plane will be a "Z" Plane. Two of the points have a "Z" offset value of +2.250 and the third point has a "Z" value of -3.565. How do I create the Plane out of these points?
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  • #2
    Construct 3 generic points at those locations & construct plane...I would think
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    • #3
      Go to construct,offset plane,then enter your offsets for your 3 points.
      PNT_|A_1| =FEAT/POINT,RECT
      THEO/1.8,-1.25,-3.18,0,-1,0
      ACTL/1.8,-1.2423,-3.1801,0,-1,0
      MEAS/POINT,1
      ENDMEAS/
      MOVE/POINT,NORMAL,1.7968,-3.2365,2.307
      MOVE/POINT,NORMAL,-3.8788,-3.2656,2.3047
      MOVE/POINT,NORMAL,-3.946,-3.2657,0.592
      PNT_|A_2| =FEAT/POINT,RECT
      THEO/-3.946,-2.53,0.592,0,-1,0
      ACTL/-3.946,-2.5256,0.5919,0,-1,0
      MEAS/POINT,1
      ENDMEAS/
      MOVE/POINT,NORMAL,-3.2904,-3.2675,3.7881
      MOVE/POINT,NORMAL,1.9844,-2.2203,3.9702
      MOVE/POINT,NORMAL,2.03,-1.7512,3.42
      PNT_|A_3| =FEAT/POINT,RECT
      THEO/2.03,-1.43,3.42,0,-1,0
      ACTL/2.0301,-1.4266,3.4199,0,-1,0
      MEAS/POINT,1
      ENDMEAS/
      PLN-A- =FEAT/PLANE,RECT,TRIANGLE
      THEO/-0.0387,0,0.2773,0,-1,0
      ACTL/-0.0389,0.0052,0.2784,0.0001336,-0.9999998,-0.0006574
      CONSTR/PLANE,OFFSET
      ID = PNT_|A_1|,PNT_|A_2|,PNT_|A_3|,,
      OFFSET = -1.25,-2.53,-1.43
      Last edited by JIM HARRIS; 06-05-2007, 06:23 PM.

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      • #4
        Your question is not clear. What are you trying to do exactly?
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        • #5
          Create points at the locations for A1, A2 and A3. Construct an offset plane like Jim Harris says and level to it. Then repeat the whole thing over again. Recreate points A1, A2 and A3 and the offset plane. Level to the new plane. This should be a good representation of the datum feature.
          The reason to do it twice is that the first time when the points are offset they are offset along a vector close to the vector you want. But doing it the second time while leveled to the "pretty close" plane will get you even closer to what you want. You can see the difference between both planes by dimensioning the first while leveled to the second. You may be suprised by the amount the two are off. I do this all the time while dealing with offsets. Let me know how this works.
          Does anyone else do this?
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