DIVIDING AN ARC IN A SKETCH INTO EQUAL SECTIONS

[kadscad]

how do you divide an arc in a sketch into equal segments without having to measure the angle or the distance along? I want to enter the number of segment and snap to those nodes.

[CCarreiras]

Hi!

Circular array?

[j.palmeL29YX]

Maybe this workaround will help you:

https://autode.sk/2Q2jzHb

cadder

kelly.young has embedded your screencast for clarity.

[kadscad]

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@j.palmeL29YX wrote:

Maybe this workaround will help you:

https://autode.sk/2Q2jzHb

cadder

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Thanks for that workaround, but that's nuts. Autodesk needs to incorporate a setting to divide an arc ,circle or ellipse equally.

[JDMather]

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@kadscad wrote:

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... Autodesk needs to incorporate a setting to divide an arc ,circle or ellipse equally.

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I think that I would just do it the easy way.

Attach your *.ipt file here if you have trouble figuring it out.

[kadscad]

a simple snap divisor is in order

[j.palmeL29YX]

I know you wrote "without having to measure the angle", but what about this:

https://knowledge.autodesk.com/community/screencast/030cbdbf-fa27-460c-a7e3-fb2238f9323d

cadder

[kadscad]

here is a simple solution that could be added. This is from another cad program

[SBix26]

How many segments are we talking about here?  Dozens? Five?

I think the quickest way to do it is to sketch that number of lines, connected to the arc, and make them all equal.  Now you have the points to add your centerpoint arc segments:

Edit: If you need to do this frequently, it could be automated with iLogic, for example.

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Sam B
Inventor Pro 2019.1.1 | Windows 7 SP1
LinkedIn

[NigelHay]

a simple snap divisor is in order.... just like you can do in AutoCAD?

[SBix26]

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@kadscad wrote:

here is a simple solution that could be added. This is from another cad program

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Microstation, like AutoCAD, can do that because there are no constraints involved.  You can change the snap divisor as many times as you wish, and the placed geometry never moves.  The snap divisor in those programs enables precise placement of geometry to those points, but there is no constraint holding them there.  They stay there because that's where they were placed.  If you move the arc, the lines stay right where you originally put them.

That's not how Inventor (nor SW, SE, etc.) works.  What you're asking for is a new kind of sketch constraint, one which would be useful on occasion, I'm sure.  But how do you expect these lines to behave if the arc is modified or moved?  They should stay connected to it, and remain equally spaced, right?  And you should be able to change the snap divisor so the number of segments increases or decreases?

I think an enhanced sketch pattern tool could probably accomplish what you're asking; the Pattern tools for part features can follow paths and space a certain number of features along the length of the path.

But it's possible that your modeling task could be done in a completely different way, maybe even a better way.  Feel free to post here and see if anyone can help you out.

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Sam B
Inventor Pro 2019.1.1 | Windows 7 SP1
LinkedIn

[JDMather]

You guys are all doing to much work?

[kadscad]

can you post how you are accomplishing this? I agree with  youthese ways are to much work for something that should be so simple

[JDMather]

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@kadscad wrote:

can you post how you are accomplishing this? I agree with  youthese ways are to much work for something that should be so simple

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It is your problem, not mine.

Every time I see something like this I think, "I must be missing something in the problem description?"

And then the OP changes the problem on me.

Attach your *.ipt file here, describe exactly what you want and I will demonstrate my Easy Button "solution".

[kadscad]

Gee thanks. Why bother commenting if you are not willing to help. I don't have a sketch that I saved I just played around with it to see how it could be accomplished

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@JDMather wrote:

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@kadscad wrote:

can you post how you are accomplishing this? I agree with  youthese ways are to much work for something that should be so simple

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It is your problem, not mine.

Every time I see something like this I think, "I must be missing something in the problem description?"

And then the OP changes the problem on me.

Attach your *.ipt file here, describe exactly what you want and I will demonstrate my Easy Button "solution".

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 quickly

[WHolzwarth]

I'd do it this way (2018 IPT)

[JDMather]

You will have more predictable results if you set Orientation - Direction1.

Especially if the path is more complex or if you use for features or use for placement of Components in assembly.

[3DAli]

I used to work on a project that I had to this frequently and it was not an arc, it was a curve, best way, copy it into AutoCAD, use divide command, copy and paste it back into your sketch, done! fast hassle free till they add this useful command to sketch in Inventor.