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measuring a countersink

Good evening Pcdmis masters, I`m fairly new to Pcdmis, and i would love to get some help , I am trying to measure a Countersink Dia at the intersection of the top surface on this part, the available area is very limited and the thread leads are not clocked to the model to get an auto cone reading accurately, is there any method i can use to first identify the rotation of the the double lead thread and then construct a cone avoiding the thread lead`s in order to get an accurate reading? any tips will be appreciated ,thanks in advance
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  • You can get the diameter, but, the angle etc will probably be obliterated by the threads.

    Measure a plane around the feature, then construct an offset plane (into hole), say 0.01mm below. Now, set an alignment. Take a set of points (in line) crossing where you expect the edge to be, construct a curve (you'll have to play around with thinning value), construct pierce point with your offset plane and that curve, now pattern that last bit as needed to make a bunch of pierced points. This works great for spotface diameters and positions as well. Example has only one edge point for simplicity. This actually works, I do this all the time.

    Attached Files
Reply
  • You can get the diameter, but, the angle etc will probably be obliterated by the threads.

    Measure a plane around the feature, then construct an offset plane (into hole), say 0.01mm below. Now, set an alignment. Take a set of points (in line) crossing where you expect the edge to be, construct a curve (you'll have to play around with thinning value), construct pierce point with your offset plane and that curve, now pattern that last bit as needed to make a bunch of pierced points. This works great for spotface diameters and positions as well. Example has only one edge point for simplicity. This actually works, I do this all the time.

    Attached Files
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