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safiredesignengineers
Posts: 581
Registered: ‎06-28-2008
Message 1 of 10 (657 Views)

is it possible to sweep a solid along a path?

657 Views, 9 Replies
01-24-2012 12:37 AM

Hi group

 

Is it possible to sweep a solid along a 3d sketched line path to cut a groove / slot?

this is like milling a slot in material on a milling machine so the cutter goes along a path removing material.

 

I can draw a rectangle that represents the side plane of a slot type cutter and this works but in the corners it is not working like a round cutter and leaves sharp corners which then need filleting to finish, but also I am not sure if it is cutting exactly as if a solid round/cylinder cutter would.

 

any thoughts?

 

regards Adrian

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safiredesignengineers
Posts: 581
Registered: ‎06-28-2008
Message 2 of 10 (642 Views)

Re: is it possible to sweep a solid along a path?

01-24-2012 04:09 AM in reply to: safiredesignengineers

Hi Group

 

Ok, using a 2d rectangle (section of solid round cutter) is no good and doesn't replicate how a round cutter would follow a 3d path on a milling machine.

With a round cutter the flat bottom of the cutter has an effect on the slot produced, as the cutter travels along the 3d line that slopes down in a Z direction the back of the cutter will cut deeper than the centre and because it is round it will actually scallop out the bottom of the slot slightly.

Using a 2d rectangle the sweep cuts a flat bottomed slot and the rectangle works on a 90degree perpendicular position from the 3d sketch line which results in angled sides on the cut slot. this is not how a cutter would work.

 

Please see enclosed part, you can see half of the cutter left over from me messing about which shows the start position of the milling cutter before it runs the slot.

 

I would like to replicate the milling cutter running through and cutting the slot, this would be possible if a solid could be used as the cutting element along a path in a sweep command.

 

Any comments?

 

Regards Adrian

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JDMather
Posts: 26,287
Registered: ‎04-20-2006
Message 3 of 10 (614 Views)

Re: is it possible to sweep a solid along a path?

01-24-2012 06:49 AM in reply to: safiredesignengineers

See attached.

Increase pattern number to smooth faces.

 

Milling.png

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Mentor
safiredesignengineers
Posts: 581
Registered: ‎06-28-2008
Message 4 of 10 (580 Views)

Re: is it possible to sweep a solid along a path?

01-24-2012 10:35 AM in reply to: JDMather

Hi JD

 

Thanks for your input and it's a very intesting concept that i will consider for other things as well, but it is not the answer, if you look from the top face you can see the odd angles this process creates, if this was milled with a slot drill the sides would not be angled. perhaps i need to break the 3d cut process into several steps to eliminate this? I will have a play.

 

Thanks, regards  Adrian

 

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JDMather
Posts: 26,287
Registered: ‎04-20-2006
Message 5 of 10 (571 Views)

Re: is it possible to sweep a solid along a path?

01-24-2012 11:20 AM in reply to: safiredesignengineers

I didn't bother to take the time to make sure your path was correct for the process - I was simply trying to show how you could represent a cutting tool if it is all set up correctly.

 

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whunter
Posts: 200
Registered: ‎06-25-2009
Message 6 of 10 (539 Views)

Re: is it possible to sweep a solid along a path?

01-24-2012 09:23 PM in reply to: safiredesignengineers

Hi Adrian. The short answer is no, IV cannot sweep a solid.

 

You can however get geometry that gives a good representation -- see this post: http://forums.autodesk.com/t5/Autodesk-Inventor/Sweep-Cut-a-solid/td-p/3251382

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coreyparks
Posts: 481
Registered: ‎06-07-2010
Message 7 of 10 (512 Views)

Re: is it possible to sweep a solid along a path?

01-25-2012 10:02 AM in reply to: safiredesignengineers

If the 2D cutter profile was perpedicular to the cut path would that get you what you need?

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coreyparks
Posts: 481
Registered: ‎06-07-2010
Message 8 of 10 (508 Views)

Re: is it possible to sweep a solid along a path?

01-25-2012 10:21 AM in reply to: coreyparks

Forgot to attach the file i was playing with.

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safiredesignengineers
Posts: 581
Registered: ‎06-28-2008
Message 9 of 10 (509 Views)

Re: is it possible to sweep a solid along a path?

01-25-2012 10:26 AM in reply to: coreyparks

Hi Corey

 

thanks for your reply, the 2d cutter profile needs to be perpendiculer / 90 degrees to the top of the main plate and then follow the 3d line path, at the moment the cutter in my origonal and JD's files is running perpendiculer to the 3d path line and also twists a bit when it goes round the bends resulting in tapered sides.

 

JD's input looks a great potential solution but I have not had the time to play with it to make it path better on the required 3d line..

 

regards Adrian

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coreyparks
Posts: 481
Registered: ‎06-07-2010
Message 10 of 10 (487 Views)

Re: is it possible to sweep a solid along a path?

01-25-2012 02:19 PM in reply to: safiredesignengineers

Sorry that reply was meant for another thread.  Take a look at the file I have attached now and see if this might create some ideas.  rather a pain to create and it left a face artifact I had to delete manually but it gives the geometry you are looking for I think.  I wouldn't want to have to create this very often.

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Corey Parks
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Synergis Adept document management software
16gb RAM --- Nvidia Quadro 4000 2gb

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