[BEGINNER] How to create a 45 degree sweep on a windmill fan (curved)

tobey_luke

I am a complete newbie to Onshape and am wondering how to make a 45 degree curved sweep on my windmill fans, https://cad.onshape.com/documents/b4b56fd1eed564bcc4a526ec/w/9e3ff1f4c6feddc0343ba012/e/037a6d0b70cb6e1d3a0e06c9

Anyhelp would be apreciated
Thanks
Tobey

owen_sparks

Hi and welcome.

Sorry, that's a bit of a vague question.  Can you do us a back of napkin sketch to give us more to go on?  When you say "sweep" do you mean a twist to the blade?  "Sweep" is a "feature" in Onshape that could be used here so the word may be confusing things...

Cheers, Owen S.

steve_shubin

@tobey_luke

Like Owen says — we could do with a bit more description 

But if you’re looking for something like a fan blade then take a look at the link below. And be sure to rotate around the part. Realize that this is just a basic fan blade

Step through the features list to see how it was done


https://cad.onshape.com/documents/4946195b2ebfe68ab5b8046e/w/f3d9c3b64ddd13895b9f953a/e/88a08f99fd7a3b754272fc4c

robert_scott_jr_

To attain the twist that I think is what you are after, I use a feature script called tangent plane to create a plane on the surface of the cylinder. I then made a new sketch of  a small rectangle. I the created another offset plane from the tangent plane and made a longer rectangle. I used TRANSFORM to rotate the longer rectangle 45 degrees. I used the loft tool to create the blade. I used MOVE FACE to ensure that the start of the blade fully intersected the hub. On the right plane I made a new sketch to create an axis to use in the circular pattern tool. - Scotty

https://cad.onshape.com/documents/48bbd728bec8f1b66110b105/w/0b34b3ad6f6a75c85c0d6ee6/e/f143dbe2df755008df5f7ddd

dick_van_der_vaart

@tobey_luke
Here is a simple one.

https://cad.onshape.com/documents/7b8b46626ad9c03de8385edf/w/9b5a007c7ac5def497c06503/e/1d4a7f9beaac55a5bc781e1e

bruce_williams

@tobey_luke

Welcome to Onshape and the friendliest forum in the universe!

A couple of methods have been posted and you should be able to learn a lot going through them.  Not to confuse - I modified your approach and made a possible blade.  Note it is good practice to keep your sketches simple and then use the various part or feature pattern tools.  That not only makes for quicker documents it is easier once you have the knack.

https://cad.onshape.com/documents/4d3d1920bfe80dfaeb8bfd87/w/50e08dde6b03e0ee72a50e9c/e/8aeab9175e4f67ce55c67898