Chamfers on Drawings

[Anonymous]

I am currently doing a drawing for a part where I have a 0.25mm chamfer on 2 edges. However, one of those edges is on a diagonal face, so the 0.25mm chamfer is being shown as 0.33 (see below). Is this the correct notation for the chamfer? I understand why Inventor is displaying 0.33, as the slanted face extends the chamfer slightly, but the chamfer used on the model was 0.25mm.

Do I leave the notation as it is, or do I need to manually change it to C0.25?

[andrewiv]

Personally, I hate manually overriding dimensions on drawings, this is not AutoCAD.  But you cannot simply leave it with an incorrect value either.  I would create a view that shows the chamfer correctly.

[Cadmanto]

My suggestion (this is what I do when confronted with a similar instance) would be to delete the .33 chamfer and place a "2X" in front of the .25 chamfer callout.

Windows 10 x64 -16GB Ram
Intel i7-6700 @ 3.41ghz
nVidia GTS 250 - 1 GB
Inventor Pro 2021

[Anonymous]

Might look into this, quite like that idea. My only issue with that is it doesn't denote where the second chamfer is. Can I add multiple arrows to one measurement?

[CGBenner]

Was the Chamfer created with the chamfer tool?  And, was the dimension placed using the Chamfer dimension tool?  Using the chamfer dimension tool, as long as you choose the right references, I believe, it should reflect the values you entered when creating the feature.

[Anonymous]

I did use the chamfer tool. Please see my chamfer settings below:

[Cadmanto]

2X is a commonly used practice as per ASME spec.

Yes, you can add a second leader to point to the second chamfer.  This would eliminate the confusion of where it is.

Windows 10 x64 -16GB Ram
Intel i7-6700 @ 3.41ghz
nVidia GTS 250 - 1 GB
Inventor Pro 2021

[andrewiv]

Try selecting a different reference edge when creating your chamfer note on the drawing.

In the pic below I created a 0.25 chamfer in the model.  The bottom note is using a vertical line as the reference edge and the top note is using a horizontal line as the reference edge.

[CGBenner]

@Anonymous 

Playing with this a little bit, you can get different dimension results depending on the references you choose.  In my poorly drawn image below, the dimensions were placed using the same color references.  The red dimension is the correct value based on the feature settings.  You may have to simply change the dimension references using the Chamfer dimension.

[Anonymous]

I can't get this feature to work. I click Add Vertex / Leader, and no matter what I click I can't get another Leader to appear. Any advice?

[Anonymous]

I just tried this. By selecting a horizontal reference, I can get C0.24. Seems like that should be right, I'm just not sure why it's not reading 0.25.

[CGBenner]

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@Anonymous wrote:

I just tried this. By selecting a horizontal reference, I can get C0.24. Seems like that should be right, I'm just not sure why it's not reading 0.25.

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What is the actual dimension of your feature?  It may be just a precision issue with the dimension itself?  The decimal precision can be set globally in your Dimension styles, but can also be overridden by double clicking on the dimension and selecting Precision and Tolerance.

[Anonymous]

The x is 0.238 and y is 0.325, so that's why they're displaying wrong. Not 100% sure why the x value is not 0.25, as I would've thought this would be the reference dimension for the chamfer?

[Cadmanto]

I can get it to work.  When you select the note and select what I said in my previous posting, then select the second chamfer and run leader back to the original chamfer note to merge the two.

Windows 10 x64 -16GB Ram
Intel i7-6700 @ 3.41ghz
nVidia GTS 250 - 1 GB
Inventor Pro 2021

[CGBenner]

@Anonymous 

That is interesting.  Can you share the part file here so I can have a look?

[johnsonshiue]

Hi! Please take a look at the following thread. It may apply to your case.

https://forums.autodesk.com/t5/inventor-forum/chamfer-distance-x-angle-problem/m-p/9547292

Many thanks!

[IgorMir]

I knew I had replied to a similar post before! 🙂

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@johnsonshiue wrote:

Hi! Please take a look at the following thread. It may apply to your case.

https://forums.autodesk.com/t5/inventor-forum/chamfer-distance-x-angle-problem/m-p/9547292

Many thanks!

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[Anonymous]

Hi, following on from what this article said, I tried manually inputting distances and using a distance and an angle, but for some reason that didn't work either. It's a work project, not personal, so I can't share the files (IPR reasons), but I'll provide you some more screenshots (below):

The scenario has changed slightly. If I select an x or a y reference, the chamfer value given is 0.37, whereas it used to display different values. That's confusing me even more, as to me that means it is completely ignoring the 0.25 rule?

[johnsonshiue]

Hi Alex,

If possible, please share the part here. There should be a logical reason to explain it. The images do not help me understand the issue better.

Many thanks!

[Anonymous]

Please see the attached part file.