Virtual gage ball in a cone

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  • Virtual gage ball in a cone

    Does anyone know of a way to construct a sphere of a specific size into a cone?

  • #2
    I don't think it is possible as stated. A sphere requires different points than a cone to construct. If you physically put a gage ball into a cone then it would only contact at the tangent points and create a circle. What exactly are you trying to simulate? If there was also a specific depth then it may be possible because that would give you the extra point needed to create the sphere. Such as "what size ball would fit into this cone and be below the surface of the hole?" I still don't know if you could get the info needed.
    Thanks
    Sean Steele

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    • #3
      I understand what you are trying to do...as I have this same need at times myself.

      A callout using a "gage ball" for a depth on a taper or cone.

      I too would like to know how to do this.
      Which one gets ridden today? MPH vs MPG..tough choice, both are FUN
      sigpic

      Starrett RGDC 4028-24 :alien:
      Demon vintages 3.7, 4.1, 4.2, 4.3, 2009

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      • #4
        Originally posted by BKulpa View Post
        Does anyone know of a way to construct a sphere of a specific size into a cone?
        It might be easier if you say what you need the sphere for - so we can just jump to that result.
        Links to my utilities for PCDMIS

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        • #5
          Well, you know the size of the sphere right? And you can measure the angle of the cone. So, you can calculate the height and diameter where the cone and sphere will meet.

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          • #6
            2*(SphereDia/2*Sin(90-coneangle/2))

            This gives you the circle where the sphere touches the cone.
            Now construct the circle from the cone and this diameter information.

            Check me on this Goodluck.
            Last edited by cmmguy; 03-23-2007, 03:04 PM.
            Links to my utilities for PCDMIS

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            • #7
              Originally posted by cmmguy View Post
              How do you get the apex point of the cone?
              use a diameter of 0 (zero)
              Which one gets ridden today? MPH vs MPG..tough choice, both are FUN
              sigpic

              Starrett RGDC 4028-24 :alien:
              Demon vintages 3.7, 4.1, 4.2, 4.3, 2009

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              • #8
                Originally posted by bob mappes View Post
                use a diameter of 0 (zero)
                And if it is measured, you would set the depth from the zero point?
                Links to my utilities for PCDMIS

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                • #9
                  I have done this many times by hand on the surface plate to figure out the theoretical diameter of a cone where it meets the surface. Just got to use a little trig. On some prints I would get a distance to the top of the ball.

                  I have never seen this done on a CMM with a virtual ball. I does sound interesting if it can be done.

                  This is an ecellent addition for 5.0.
                  Along with an automatic color change feature when you actually report on a feature. This way when you have a couple of hundred features to report on you would know which ones you already did and wouldn't report the same thing twice.
                  Tolerance challenged ... Living in the world of unseen lines.

                  This software isn't buggy its an infestation

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                  • #10
                    CONE_BALL_GAGE.jpg

                    this is what I have figured out for my needs

                    hope this helps someone else

                    bob
                    Which one gets ridden today? MPH vs MPG..tough choice, both are FUN
                    sigpic

                    Starrett RGDC 4028-24 :alien:
                    Demon vintages 3.7, 4.1, 4.2, 4.3, 2009

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