Hexagon Holes

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  • Hexagon Holes

    You would think, with a name like Hexagon Metrology, that they would at least have an auto feature dedicated to checking Hexagon holes right???
    Any suggestions as to the best way??

  • #2
    The way I do it is to measure a circle with 6 evenly spaced hits, using the re-measure function. Try to get the hits as centered on the flats as you can by playing with the start/end angle. The remeasure function is VERY important as it will then remeasure the hole at the position it just measured it at, helping you to get a better center. The size will be questionable since you really have no way of making sure you are actually on center with your hits.
    sigpic
    Originally posted by AndersI
    I've got one from September 2006 (bug ticket) which has finally been fixed in 2013.

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    • #3
      Measure it as a circle with 6 hits, move your start & end angles to hit the center of the flats. this will give ya location & size across the flats. hope this is what you were looking for.
      PcDmis 3.7MR4
      1 - Vento, Dual Arm
      2 - PCR's 1 W/36" Rotary Table
      1 - Dual Arm 3000
      PHS Wrists on Above Machines
      1 - Excel W/PH-10

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      • #4
        Hey Matt ya beat me to it, I forgot about the re-measure
        PcDmis 3.7MR4
        1 - Vento, Dual Arm
        2 - PCR's 1 W/36" Rotary Table
        1 - Dual Arm 3000
        PHS Wrists on Above Machines
        1 - Excel W/PH-10

        Comment


        • #5
          For size I recomend using gage pins and a keyed in diameter.

          Bill

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          • #6
            Originally posted by Mr.Natural
            Measure it as a circle with 6 hits, move your start & end angles to hit the center of the flats. this will give ya location & size across the flats. hope this is what you were looking for.
            I'd be skeptical of size reporting with this method as Matt said. How is this feature specified? Do you anly need locatioin only for alignment/dimensioning? Hexagon might not have a solution for you but we may. Let us know how it is spec'd and one of the gurus here might be able to assist.

            Craig
            <internet bumper sticker goes here>

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            • #7
              re

              Could you take two hits on one of the flats, create a line and rotate to it, then all off you hits should hit center.
              sigpic

              B&S ADVANTAGE 12-22-10, EXCEL 9-15-9, ETC.
              PCDMIS 4.1, 3.5mr2,

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              • #8
                There are five of these .937 hexagons on the part. Four of which are located at close proximity of the four corners of a square piece of metal. One of the four is used a datum or x/y origin.
                Thanks for the ideas though. That is how I have done it in the past. But, it just seems that this would be a definite go for an auto feature. Don't you guys think?
                How about one of you User Forum gurus start a poll and let's all vote on it, so that Hexagon would be more apt to incorporate it into the software as an auto feature??

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                • #9
                  OK so I am assuming there is a size callout of accross the flats (probably called out as TYP or 3 PLCS?). And location as well. Are there orientation requirements?

                  Craig
                  <internet bumper sticker goes here>

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                  • #10
                    I have ran into the same issue... What I did was picked up a line on each one of the flats and then constructed points using the intersected lines all the way around the hex feature. Once I constructed all of the intersection points I created a MAX_INSC circle from the points and then dimensioned the diameter. Seems like a little work but I was pleased with the results.

                    Mike
                    Last edited by Mike Johnston; 05-22-2006, 09:09 AM.

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                    • #11
                      Measure a 2d line on each flat for a total of 6 lines, create 6 intersections point using contiguous lines, after that construct a circle with 6 intersection points
                      now you can dimension location, if you need size maybe you can check the 2d distance between opposite lines,

                      Now on Version 4.0 there is a new automatic feature called Automatic Polygon
                      in order for measurements of Polygons equally spaced from 3 sides to 12,

                      better wait for 4.1 to use it

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                      • #12
                        OK, go one step further and take the midpoints of each of the intersection points and then construct a MaxInscCircle from those midpoints. This should give you the effective pin diameter for the hole and a pretty repeatable location. If you need "across the flat dimensions" then do straight line distances between midpoints.
                        Links to my utilities for PCDMIS

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