Add option to make hole the proper drill size for a given tap

[sprior913]

Since you've just added threading options to the create hole operation, it might be good to add support for drilling holes of the right size for tapping a specified thread later.  For example the drill size for a M5 x 0.8 thread is 4.2mm, so it would be great if in Fusion you could say you wanted a hole sized for a M5 x 0.8 thread and it would look up the 4.2mm without the user needing to look that up.  Then later in the CAM environment the user could select that threaded hole and have the drilling and threading operations both able to be generated from the feature.

[kb9ydn]

In general this is a good idea as long as there is also a way to manually enter a value for what the tap drill size is.  Reason being there are different drill sizes required depending on the type of tap used (cutting vs forming) and also the depth of the hole (deeper threaded holes need a slightly larger drill size to keep from breaking the tap).

C|

[Farzati.Scott]

Absolutely!  I posted in a different thread on the Forum page about the exact same thing.  There is relevance and application when the correct tap drill size is needed.  Fusion simply took the easy road by making it nominal.  They did make a choice on counterbore sizing with close, normal and loose fit.  Why would they not realize that tapping is no different.  At least as mentioned allow me to enter it in myself, not a default that no option is given to the user...  The answer I received is that I can drop any size drill into a hole on the CAM side.  Really?!?!?

[sprior913]

I'm an enthusiast user with an X-Carve, so the use case for me is as follows:  I'm making a bracket out of 1/4" aluminum and need some M5 threaded holes.  I'm doing all the cutting with a 1/8" bit.  All the tapping would then be done by hand.  So the plan is to use the 1/8" bit to mill out the 4.2mm hole and then tap by hand.

So when using Fusion I'd like to model with the M5 thread which is the ultimate final result, but in the CAM workspace mill out the 4.2mm hole, but since my bit isn't 4.2mm it wouldn't be a drill operation.

[Farzati.Scott]

Absolutely, sometimes it slips through the cracks that eventually these
products go into manufacturing. I use Fusion from the design, blueprint,
CAM and machining...

[colinNJB25]

Looking in the .xml thread configuration file the data exists already. I also bore holes with a smaller bit and then thread by hand. Now I have to look up the size and add it to my sketch. automating it would be a nice touch.

<ThreadSize>

    <Size>1/2</Size>

    <Designation>

      <ThreadDesignation>G 1/2-14</ThreadDesignation>

      <CTD>G 1/2-14</CTD>

      <TPI>14.0</TPI>

      <Thread>

        <Gender>external</Gender>

        <Class>A</Class>

        <MajorDia>20.813</MajorDia>

        <PitchDia>19.722</PitchDia>

        <MinorDia>18.631</MinorDia>

      </Thread>

      <Thread>

        <Gender>internal</Gender>

        <Class>A</Class>

        <MajorDia>20.955</MajorDia>

        <PitchDia>19.864</PitchDia>

        <MinorDia>18.9015</MinorDia>

        <TapDrill>19.05</TapDrill>

      </Thread>

      <Thread>

        <Gender>external</Gender>

        <Class>B</Class>

        <MajorDia>20.813</MajorDia>

        <PitchDia>19.722</PitchDia>

        <MinorDia>18.631</MinorDia>

      </Thread>

    </Designation>

  </ThreadSize>