Inventor General Discussion

Inventor General Discussion

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rthakare
Posts: 43
Registered: ‎03-08-2012
Message 1 of 9 (825 Views)

Ribs on curved surface

825 Views, 8 Replies
05-24-2012 06:31 PM

Hi,

 

How do I draw ribs on a curved surface. Attached is model that I am working on and I need to create ribs on the curved surface in radial direction.

 

How do I do it?

 

Thanks.

 

Mentor
trumpy81
Posts: 317
Registered: ‎10-22-2006
Message 2 of 9 (814 Views)

Re: Ribs on curved surface

05-24-2012 09:07 PM in reply to: rthakare

This is probably not what you had in mind, but hopefully it shows at least one technique.

 

See the attached part. (It's your part but modified)

 

BTW, your thread specification is out of whack, you may want to correct that.

Regards
Andy M
-------------------------------------------------------------------------------------------
Autodesk Inventor 2013 Pro SP1.1, Win7 Pro - 64Bit - SP1, Intel i7 960 @ 3.333 GHz
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Active Contributor
rthakare
Posts: 43
Registered: ‎03-08-2012
Message 3 of 9 (773 Views)

Re: Ribs on curved surface

05-29-2012 10:27 AM in reply to: trumpy81

Hi,

 

Thakns, but I am looking these ribs in radial direction and not in axial direction. I am trying to model a part somilar to the one in attached picture. 

 

The base model is different but I want the similar type of ribs.

 

Yes, I know  the threads are way off on my model. I just did those to get basic concept out but was having hard time to model these ribs.

 

Thanks.

 

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trumpy81
Posts: 317
Registered: ‎10-22-2006
Message 4 of 9 (752 Views)

Re: Ribs on curved surface

05-29-2012 11:23 AM in reply to: rthakare

If you use the technique I demonstrated for you, then you should be able to generate the desired ribs. You can use workplanes instead of the origin planes that I used, but other than that the process is much the same.

Regards
Andy M
-------------------------------------------------------------------------------------------
Autodesk Inventor 2013 Pro SP1.1, Win7 Pro - 64Bit - SP1, Intel i7 960 @ 3.333 GHz
Asus X58 Sabertooth, Corsair 12Gig DDR3, AMD Radeon HD6970, Samsung 830 Series 256G SSD, 2x 3TB Seagate, 2x 2TB Hitachi,
1x 1TB Samsung, 4 x 2TB Seagate in Netgear ReadyNAS NV+, Dual Asus VE278Q Monitors
Product Support
bobvdd
Posts: 577
Registered: ‎11-23-2005
Message 5 of 9 (696 Views)

Re: Ribs on curved surface

06-08-2012 11:00 AM in reply to: trumpy81

I used a sweep with path and guide surface option and used a workplane as the guide surface.

To give the ribs a constant height, I had to trim away the excess material by doing a split with an offset surface.

Attached part is a 2013 part.

 

cable relief.JPG

 

Bob

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trumpy81
Posts: 317
Registered: ‎10-22-2006
Message 6 of 9 (673 Views)

Re: Ribs on curved surface

06-08-2012 04:48 PM in reply to: bobvdd

BobVDD, that is completely different to how I would have done it, but I have a question or 10 million .... lol

 

How do you control the height of the rib using the split tool?

 

I'm not too familiar with that tool, can you point me to some info/tutorials in using the split tool please?

Regards
Andy M
-------------------------------------------------------------------------------------------
Autodesk Inventor 2013 Pro SP1.1, Win7 Pro - 64Bit - SP1, Intel i7 960 @ 3.333 GHz
Asus X58 Sabertooth, Corsair 12Gig DDR3, AMD Radeon HD6970, Samsung 830 Series 256G SSD, 2x 3TB Seagate, 2x 2TB Hitachi,
1x 1TB Samsung, 4 x 2TB Seagate in Netgear ReadyNAS NV+, Dual Asus VE278Q Monitors
Product Support
bobvdd
Posts: 577
Registered: ‎11-23-2005
Message 7 of 9 (670 Views)

Re: Ribs on curved surface

06-08-2012 05:04 PM in reply to: trumpy81

Andy,

 

The offset surface command gives you full control over the offset distance from the base surface.

And it is that offset distance that determines the "rib" height. This ensures that the rib height is uniform across all ribs.

 

Here is a screenshot of the offset surface in yellow before I use it in the split operation. Note that I have a lot of excess material to cut away :-)

 

offset_before_split.JPG

 

In the split operation that follows I use the second option (Trim solid).

 

To read up on the split command, have a look here in the wiki:

Split command

 

Bob

Mentor
trumpy81
Posts: 317
Registered: ‎10-22-2006
Message 8 of 9 (663 Views)

Re: Ribs on curved surface

06-08-2012 05:39 PM in reply to: bobvdd

BobVDD, thanks, that really explains a lot in using the split command. It seems that I still have a LOT of learning to do, but I'm getting there and enjoying every minute of it too ... :smileyvery-happy:

 

I'll hit the Wiki soon and check it out, now if only I could get Inventor to extend the hours in a day ..... :smileyvery-happy:

Regards
Andy M
-------------------------------------------------------------------------------------------
Autodesk Inventor 2013 Pro SP1.1, Win7 Pro - 64Bit - SP1, Intel i7 960 @ 3.333 GHz
Asus X58 Sabertooth, Corsair 12Gig DDR3, AMD Radeon HD6970, Samsung 830 Series 256G SSD, 2x 3TB Seagate, 2x 2TB Hitachi,
1x 1TB Samsung, 4 x 2TB Seagate in Netgear ReadyNAS NV+, Dual Asus VE278Q Monitors
Active Contributor
rthakare
Posts: 43
Registered: ‎03-08-2012
Message 9 of 9 (655 Views)

Re: Ribs on curved surface

06-08-2012 07:10 PM in reply to: trumpy81

Thanks a lot everybody.... :smileyhappy:

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