topic Re: features and circular pattern in Inventor Forum

features and circular pattern

Anonymous — Mon, 13 Jun 2016 10:32:49 GMT

Hi!

I need to do extrude based on the this shapes.

There should be 18 arcs tangent to each other.

I want to use exreude and then create circular pattetrn using these features.

This is what I get:

My question is how do I calculate the dimension of the first feature, so the others will be tangent one to another

Thank you!

Anonymous — Mon, 13 Jun 2016 10:36:01 GMT

Here is the file:

mcgyvr — Mon, 13 Jun 2016 12:51:29 GMT

360/18 = 20 deg

Anonymous — Mon, 13 Jun 2016 13:12:26 GMT

Here is another way

Make your Circle

Now your Arc

Now Pattern your Arc with 18ul

As you can tell the Arc's are not tagent to one another. to make them tagent. Select the 2 points of adjacent Arcs and make the value 0

then simply extrude or loft to the required length

Anonymous — Mon, 13 Jun 2016 13:29:27 GMT

@Anonymous, thanks for reply,

but method of @mcgyvr is best for me since I want to extrude the feature and not the sketch.

Thanks!