Another scanning post

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  • Another scanning post

    Sorry if this has been talked about before, i honestly didn't find anything that could help. I have a cylinder i'm trying to scan. It has a couple holes on the side and my probe scans over those. How do i tell it to skip the holes when scanning? usually with ttp i turn void detection and knows not to go there but with scanning it doesn't help.
    Last edited by Disal; 01-24-2020, 12:41 PM.

  • #2
    I would say "use theo" on "ON", and the filter outliers...

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    • #3
      Originally posted by JEFMAN View Post
      I would say "use theo" on "ON", and the filter outliers...
      I will try it and let you know. Thank you

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      • #4
        Originally posted by JEFMAN View Post
        I would say "use theo" on "ON", and the filter outliers...
        Hi, this didn't help. I tried all the different outliers and it does the same. just scans over the holes

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        • #5
          I'm not the scanning Guru and maybe it's not an option in the Auto Features but I'm almost positive I've seen a "Jump Holes" option in the "Basic scan" dialog boxes. Maybe you could build a cylinder for multiple basic scans? I dunno...
          Sheffield Endeavor3 9.20.8, Tesastar-SM, Leitz LSP-X1s & LSP-X1M, PCDMIS 2011 MR1

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          • #6
            I just had this similar issue and couldn't seem to find a solution that worked sufficiently. I ended up changing the amount of rows to miss the holes. Not the best solution but it worked. Also, this CAD looks surprisingly similar to an AR bolt carrier.

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            • #7
              Keep your eye on the goal: measure a cylinder, preferably with scanning. The goal is not locked down to "Auto Cylinder" or "Concentric Ring Scans", right?

              So you could stick with Auto Cylinder and change strategy to a single spiral scan (which is slightly more efficient and more accurate due to no stop/start prehit/retract) with a large pitch carefully tuned to miss the holes.

              Or you could create a series of separate Basic Circle scans inside the bore, shifting their locations to skip the holes, and then Construct a cylinder from them. One neat thing about this is the ability to also Construct circle features from each scan in order to report size and/or roundness changes along the bore.


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              • JEFMAN
                JEFMAN commented
                Editing a comment
                I always use this kind of spiral scan for cylinders, but in "basic scans" section...

            • #8
              Originally posted by Hi-Tech Redneck View Post
              I'm not the scanning Guru and maybe it's not an option in the Auto Features but I'm almost positive I've seen a "Jump Holes" option in the "Basic scan" dialog boxes. Maybe you could build a cylinder for multiple basic scans? I dunno...
              I don't see anything like "jump holes" or anything similar on the dialog

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              • #9
                Originally posted by zbailey View Post
                I just had this similar issue and couldn't seem to find a solution that worked sufficiently. I ended up changing the amount of rows to miss the holes. Not the best solution but it worked. Also, this CAD looks surprisingly similar to an AR bolt carrier.
                I've been trying that but i also thought it's not a solution, because once i start scanning more often i'll be having a lot more similar cylinders like this with a bunch of holes in them that i'll need to work with

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                • #10
                  Originally posted by Ego Murphy View Post
                  Keep your eye on the goal: measure a cylinder, preferably with scanning. The goal is not locked down to "Auto Cylinder" or "Concentric Ring Scans", right?

                  So you could stick with Auto Cylinder and change strategy to a single spiral scan (which is slightly more efficient and more accurate due to no stop/start prehit/retract) with a large pitch carefully tuned to miss the holes.

                  Or you could create a series of separate Basic Circle scans inside the bore, shifting their locations to skip the holes, and then Construct a cylinder from them. One neat thing about this is the ability to also Construct circle features from each scan in order to report size and/or roundness changes along the bore.

                  Thank you, I will try doing a few single spiral scans and constructing a cylinder from those

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                  • #11
                    So one more thing i decided to try is change my start/end angles to skip through the holes. It works perfect. I'm not getting the surface under the holes but it's okay, i just add more rows. Thank you all for helping

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                    • #12
                      Originally posted by Disal View Post

                      I don't see anything like "jump holes" or anything similar on the dialog
                      Capture2.JPG
                      Sheffield Endeavor3 9.20.8, Tesastar-SM, Leitz LSP-X1s & LSP-X1M, PCDMIS 2011 MR1

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                      • #13
                        Originally posted by Hi-Tech Redneck View Post
                        Thank you! I definitely missed that

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                        • #14
                          I have not done any scanning with PC-DMIS but, I noticed the void detect is on and that messes up my autocircles and autocylinders........

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                          • #15
                            Originally posted by Tater View Post
                            I have not done any scanning with PC-DMIS but, I noticed the void detect is on and that messes up my autocircles and autocylinders........
                            I put it on to see if it would avoid the holes, on or off didn't make a difference on scanning. On ttp i actually have it on most of the time and i like it

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