Make a hole in a ring...help!

[Anonymous]

I have a 2D ring.  6" outside diameter, 5" inside diameter.  I want to place a hole, 3/16" is diameter in this ring.

I've spent 2 hours trying.  It never works.  

I have tried creating a circle. Then I try a press pull on the ring..the hole remains filled.  Nothing I seem to be able to do makes the ring have this hole.  Can someone please try and explain this to me?  Thanks

[HughesTooling]

Is this something like what you're after, if it is the only thing that might be the problem is are all the circles in one sketch?

Mark

[Anonymous]

Hi,

Yes, they are all in one sketch.  If not then they are not exported when I export this to DXF.  Come to think of it they aren't exported anyways.

I need a 2D DXF at the end with holes in the ring.

Thanks

[davebYYPCU]

You already have what you want, the hole remains shaded, you can't make that clear until you turn the sketch off. Save sketch as dxf and you are done. (I refer to the pic in post 2, it is done for your stated purpose)

[Anonymous]

Hi,

I tried to simplify this....lol Remember the 90 tooth pulley last week?  Well that pulley has a 5" diameter hole in it.  They you need a hole in trhe "ring" part.

Ity does work like you state, but not on the imported gear.

Tom

[HughesTooling]

The imported DXF was a spline, Fusion has a problem with some splines so that might be the problem. Can you Export the part and attach, use Export form the file menu it's quicker than links.

Thanks Mark

[TrippyLighting]

By far the simplest thing is to export your model as an .f3d file and attach it to you next post. That way we can stop second guessing what might be the problem.

At first sight this seems trivial.

[Anonymous]

Hi

Thanks for this. I exported the pulley to a .f3d file, created a new design from this file and was able to place all the holes I need.

Seems it was a bug .

All's well now.  Thanks

[Anonymous]

Hi,

Nope, I spoke too soon. 

You can add the circles, but I need a DXF file at the end.  As far as I can tell, you right click on the sketch and select export DXF.  However, there are now two sketches!  The ring and the circle. I can export only one sketch at a time, so this does not work.  How do you combine two sketches?

I tried to create a selection set.  I followed the video tutorial.  However, when I right click the selection set, the option to export to DXF is not there, contrary to what is stated in the tutorial!

I have added the archive file without the circles.

So how do you make one sketch out of two?

[HughesTooling]

Right click on the feature in the timeline then you can right click on the sketch and edit to add your circle to that sketch. When you've close the sketch click Finish Base Feature.

Mark

[Anonymous]

Hi,

No go.

Right clicking does not show the "Edit".  In fact it lookss like the feature has a padlock on it.

As a matter of fact, pretty well everything that is mentioned in the tutorials has missing items in the menus!  This must just be another one!

Now what???  This started as a DXF file.

[HughesTooling]

Here's what I get when I right click on the base feature in the timeline, what Are you seeing can you get some screen shots.

There is a problem though, I can edit the base feature and that lets me open the sketch for editing, the problem is when I add a circle Fusion crashes. I think this DXF is just overloading the sketcher in fusion because it has over 7000 lines in it @jeff_strater could you take a look at the f3d file attached to post #9 in this thread.

Mark

[Anonymous]

Hi,

Mine doesn't crash it just doesn't show that menu....everything is there except "Edit"

But the scr=een shot looks different.  I have included it here.  This must have something to do with that padlock or paper clip whatever it's called.  Also does it have anything to do with the small sketch of a tooth in the upper right?  I can;'t get rid of this!!

Thanks

[jeff_strater]

Hmm... I was able to do:

1. edit the base feature

2. edit the sketch

3. add a few circles

and it all seems to work for me:

The performance is slow, for sure, but I can work with it.

When you crashed, @HughesTooling, did you send in a CER form?  I can look for that with your email address, that might tell me more.

Jeff

[HughesTooling]

No it just closed. One difference I picked the origin as the centre, I'll give it a go like your pictures to see if I can get that to work.

Mark

[HughesTooling]

Tried again like your example and crashed again. Here's a screen shot. I'll try a reboot see if that helps.

Mark

[jeff_strater]

I added a fifth circle, trying to pick the origin (for some reason, I was not able to pick the origin in this model).  That circle worked OK for me, but when I tried to drag it, then I did see a crash.  And, like you, no CER.

We'll look into this crash to see if we can learn anything from it.  Thanks for bringing it to our attention.

Jeff

[Anonymous]

Hi I just tried again.

I started with the test file I uploaded.

This time, I did not see the strange "padlock"

I then attempted to right click the padlock.  Nothing happened.;  After fiddling for a while I did get an Edit secition.  I added the circle and now there are two sketches again and if I export then I only get one or the other.

Oh, and you must add circles to the ring, not the hole.  Don't forget this is a ring.  The center is empty, there is a 5" diameter hole in this gear.

[HughesTooling]

@Anonymous I can't get your DXF to work but could you use the parametric pully I uploaded. I've attached a copy with an extra sketch, sketch4 should be something like what you're after. I've added a parameter CentreHoleID as well, if you change the number of teeth make sure to adjust the centre hole to suit. Any mods to parameters will automatically update sketch4.

Mark

[Anonymous]

Hi Mark,

Thank you very much for this.  I will use this as a back up for sure.  Unfortuneately Fusion 360 seems just too buggy to be used by me.

A case in point...yesterday I figured I would create a rectangle the size of my work piece and then place holes in it at the required locations.  I figured I would just make these holes first then cut the gear.  Well when I brought the DXF into MeshCam, the size was all messed up.  When I brought it back into fusion 3d all the dimentions were wrong and when I tried to fix them the program crashed. And that was the file that fusion 360 created.  So many crashes, so many retries..

This plus long (1 to 2 minute load times and I have a 60mbit line) load times, makes this product pretty well alpha in my mind.  I can't see how this can work for anything real.

On the other hand, this product is very well supported by people like you and I really appreciate the help you have given me.  It's just that Fusion 360 needs lots of work IMHO.  Perhaps that's why the price went down to $25 a year lol.

I did take my gear into LibreCad and within the hour (never used it before) got the holes made and all is well.  In general, perhaps I do not need a 3D Cad program.  2D might just be enough.

Once again, thanks so much.