fluted (zig zag) edge

[Anonymous]

good day - 

i am wanting to create a fluted wheel very much like the attached references. i guess there are 2 types to go with.

one - is the thinner version where the metal is pressed/stamped.

two - a thicker metal casted.

i plan on creating both for prototypes.

i was wondering before i dive in (as i'm fairly new to f360) what methods/tools does the community recommend?

all the best!

jón

[laughingcreek]

you'll probably end up doing a revolve pattern of a pie shaped surface.  attached is a quick example you might can expand on.

[Anonymous]

that is spot-on for the pressed/stamped metal process. 

i have to say however, it doesn't look so easy from a newbie perspective (design-wide) although it strangely seems simple. lol 

can you point me to a tutorial closely related to this process/design?

[TrippyLighting]

This is very similar to a hirth joint. Here's a thread with a screencast.

[Anonymous]

so to clarify as i was hoping to hear a response on this reply - as i'm really interested in this learning process.

i should assume the area i highlighted in yellow (is that the sheet metal design feature?)

and how you drew a spline in the z-zxis on a single 2d sketch seems like magic! can someone please clarify?

[Anonymous]

so i headed over to 3ds max as i'm more familiar with the program - in studying this design.

i managed to put it roughly together - now i just need to find out to do this in fusion 360.

any ideas?

[laughingcreek · Accepted solution]

I don't think the 3d dimensions I used in the first example are documented yet,  they're just something I stumbled on.  The same things can be achieved by using the move command to move points off the sketch plane.

here is a screen cast of me attempting to do the the latest cutter you posted.  this was my first attempt, so kinda rough.  maybe this will help.  file also attached.

[TrippyLighting]

If you are comfortable with mesh modeling then this can also be done as a T-Spline, but then would be fully non-parametric 😉

[Anonymous]

hey @laughingcreek - that was brilliant! thank you for explaining with the screencast - it totally hits the mark with what i was attempting to do. i have yet to venture in sheet metal design - but that changes today! 

i have only 1 question on this process, however - and that it regarding the line drawn on the circle (as opposed to drawing an arc.)

my design was for illustration purposes and it was done in haste - but i had the time to do it correctly - i would have had a smooth continuous circle (not faceted edges as i had done.)

you managed to recreate verbatim my design via fusion 360  however, i'm assuming drawing an arc 'in-place' of the line is quite easy to do? i'll find out today - as i'm going to attempt your design from scratch.

again - thanks for your help and clarification.

whenever you have time - i would be grateful to see a screencast of your original post too (with the spline.!)

all the best! 

[Anonymous]

thanks @TrippyLighting i prefer the parametric option - but your efforts are fully appreciated! 

[laughingcreek]

glad this has been helpful.

just want to clarify, neither of the approaches I've shown use the sheet metal workspace.

as far as an arc instead of a straight line goes, yes , that would be fairly easy.  I don't know about creating it in 3d, would have to try it.  I would adjust my current design like this to add the arc.

-add arch to the first sketch on the origin plane that I started with.

-after creating the other sketches and planes, add an offset plane (use the length of those lines as the distance parameter, like I did with the extrude, to keep it parametric.)

-project the arc from the first sketch into a sketch on the offset plane.

after that, just use the arcs anywhere I used the straight lines for creating the surface geometry and the extrude.

[Anonymous]

@laughingcreek you'll have to excuse the latency in response due to time zones 

so i read and re-read your instructions and just can't seem to sort this arc.

i managed to draw it at the base of the sketch - but cannot project it for the life of me. at one point the arc seemed to project correctly - however - i was unable to create a solid with the included arc (maybe because of it's 2 different sketches?)

lastly - i assumed you were working in sheet because i took notice of the icons on your toolbar - but realizing you have customized some shortcuts! 

[Anonymous]

here's the view the arc projected (secondary sketch).

in order to create a solid - i'm assuming i need to merge the sketches? is that possible?

[laughingcreek · Accepted solution]

sketch curves used to make profiles for operations like extrude, revolve, etc have to reside in the same sketch.  you can do this buy projecting from other sketches if needed.(example from  model, the pie shaped extrude used to fill center area.

sketch curves used as paths or surface boundary edges, loft rails etc. can be in multiple sketches (example from model, the surface patches used to make the tooth shape.)

which is to say there isn't a need in this case to "merge" any of the sketch curves in this case.  just have to insure the connect at endpoints in space.

another screen cast more or less following the outlines steps to convert that straight edge to an arc.

now to find my coffee...

[Anonymous]

awesome - thanks again @laughingcreek appreciate the clarification. i will dive back in and resolve.

this certainly puts a spin on my f360 knowledge - new tools and techniques! enjoy that coffee 

[Anonymous]

brilliant! worked like charm...

[Anonymous]

hey @laughingcreek 

sorry to bother - but i'm in another pickle (of the same design. lol )

so - the finished design will be used for rolling on a surface - but it occurred to me that the current design - the edges are faceted (red mark.) 

i managed to understand to draw the arc earlier 'on the inside - and then extrude' - but how does one carry the arc on the outer edge? is this a boolean operation?

i was revisiting some of the references i had started with - and i noticed that some of them are flat on top & bottom.

i had a miserable experience trying to re-create this in f360 - so i jumped over the AutoCAD to draw it out 2d and make sense of it. below is the drawing - 2 versions that are the same - only changing the depth.

is there a parametric option to this design? would it be simpler or more complex?

best regards -

jón

[laughingcreek · Accepted solution]

so here is another approach that approximates the latest pics.  I ignored the straight line circled in the pic, wan't sure what the surfaces should look like at that point. enjoy.

[Anonymous]

much appreciated @laughingcreek !

nothing made sense until 5:20 something  then i started to see it come together. i can only assume you're an everyday user - because you're using techniques and tools i have yet to discover. especially in terms of parametric design.

i am not in the office today but look forward to jumping in on this first thing tomorrow. your time & efforts are greatly appreciated - i owe you 2 coffees - as least!  all the best.

[Anonymous]

success!  just finished building this.

@laughingcreek  thanks again!!