Tapered Hole

[kevinwatts]

I need to make a number of 1.5 deg angled tapered dead holes for brass inserts. The taper needs to be only the length of the insert. The hole diameter beyond that is not tapered.

As an example the data sheets for 8-32 short insert give:

Insert Length: 0.217"

Top of Hole dia.: 0.229"

The holes are already in my body for a different style of threaded insert that used a Countersink. Now I have to convert all of them for another style of insert.

My first response is to use the Create --> Hole feature in the Model workspace. Does anyone have suggestions to convert/make the tapered holes that I am looking for?

[HughesTooling]

If the holes in the model are smaller than the new tapered holes you could make a male component with the new profile on the outside and use combine cut to make the new shape. You might be able to make a pattern to do all the holes or you might need to copy the new component to all the holes then use combine cut on all parts.

Another option, use a countersink something like this. Is the part already modeled in Fusion or an import, if it's a Fusion model can you go back and edit the hole feature. You'll have to do the math to figure out the size of the through hole to give the correct length of taper.

Mark

[kevinwatts]

Thank you for the sugestion Mark.

The body is modeled in Fusion but without p-history. I need the holes to mate with their corresponding counterpart.

I am working on doing your second sugestion. It is very hard as each time I set the 1.5 deg. the hole wants to protrude past the end/bottom dimension of th hole (as per your screen shot).

I think I ran in to this before and sugested that this should be a new feature.

Kevin

[kevinwatts · Accepted solution]

I found that I can use the Countersink with special settings. It is not intuitive, you have to think about what you want to accomplish and play with it to get the defaults that you need.

In the project (without history) I can:

1. select the existing hole side faces, used for the other mfg. inserts
2. R-click and select Edit Feature
3. Adjust to the new settings (countersink diameter first)

However, I have 4 holes that do not allow me to select as easily. Can someone help??

After selecting the hole sides (hole and the upper counter angle) and selecting Edit Feature, I do not get the pop up that allows me to edit the feature. I had to make changes to this hole before and 2 Hole ## pop-up. How can I edit it? I do not want to loose the centers by simply deleting the hole.

[kevinwatts]

Now I have 8 more countersunk holes that I can select the faces inside the boss but when I R-Click I do not get the option on the list to Edit Feature.

I need to had this off for production this morning. Suggestions needed please and thank you.

[innovatenate]

Could you use the Draft command to modify the hole?

I note you may have to create some construction planes to get the command to work.

 If this is way off base, could you share some more screen shots about the issue. I'm having a hard time picturing the problem. An Autodesk Screencast would be really helpful! I hope that helps.

Thanks,

[innovatenate]

Here's a screenshot of what I mean with the draft command and the construction plane.

Hope that helps.

[innovatenate]

Hi there I hope all is well and you were able to resolve this. Let us know if you have any other questions!

Thanks,

[kevinwatts]

Thank you Nathan for the suggestions on how to create the tapperd hole for inserts.

Basically, I was able to manually record the Countersink settings for each fitting. Then use Sketch to layout the existing bosses, delete the holes and then create new Holes using the Countersink settings for each size of insert.

The manufacturer for these inserts provides only the angle (1.5 deg.) and width of the hole at the top face (used Countersink dia.) and then the length of the insert. You have to do the math of for the minimum recommended hole depth. (insert length "L" x 1.5).

I used a separate project and a solid block with visible hidden elements to create a Hole and visually define the bottom diameter of the countersink, which you input in the Countersink dialogue box. I set Tip Angle: 180 deg. The hole depth is then set last for each application.

Kevin

Example:

1/4"-20 Insert Short

Hole Type: Countersink

Min. Hole Depth: 0.37 (change this after to desired hole depth)

Hole Dim.: .032

Tip Angle: 180

Countersink Angle: 1.5

Extends: Distance

Manually setting 10-24 Insert: