Inventor Fusion

Reply
Member
MrNickBarker
Posts: 4
Registered: ‎12-04-2012
Message 1 of 8 (936 Views)
Accepted Solution

Parallelogram mechanism

936 Views, 7 Replies
12-04-2012 10:53 AM

I'm trying to build a simple parallelogram mechanism which should lift a top plane.

 

My problem is that as soon as I add the last joint the model won't move and I get "Distance conflict due to joint type". 

 

I'm guessing that it's mechally imposible for the joints to move the way they are setup, I've attached an image so you can see better.

 

Thanks in advance.

 

Screen-Shot-2012-12-04-at-7.51.11-PM.jpg

Looking at your model I see a few problems. See attached image.

 

The joint origins are not lined up. This will cause the mechanism to bind. A mechanism like this requires the same joint origin spacing on both parts that the link bars are linking.

 

Please mark this response as "Accept as Solution" if it answers your question

 

 

*Expert Elite*
JDMather
Posts: 28,221
Registered: ‎04-20-2006
Message 2 of 8 (931 Views)

Re: Parallelogram mechanism

12-04-2012 02:12 PM in reply to: MrNickBarker

Can you attach the dwg file here?

Please mark this response as "Accept as Solution" if it answers your question.
-----------------------------------------------------------------------------------------
Autodesk Inventor 2015 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2015-SP1 64-bit
http://www.autodesk.com/edcommunity
http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
Member
MrNickBarker
Posts: 4
Registered: ‎12-04-2012
Message 3 of 8 (927 Views)

Re: Parallelogram mechanism

12-04-2012 02:36 PM in reply to: JDMather

The file format which Inventor Fusion for Mac allows me to save is f3d and this forum doesn't allow f3d extensions for attachments, so I just replaced the extension with .dwg change to .f3d to open again.

 

I tried to use export but there isn't dwg there either.

*Expert Elite*
JDMather
Posts: 28,221
Registered: ‎04-20-2006
Message 4 of 8 (918 Views)

Re: Parallelogram mechanism

12-05-2012 08:29 AM in reply to: MrNickBarker

I didn't realize you were using Mac version or that Mac version would not allow you to save dwg.

Please mark this response as "Accept as Solution" if it answers your question.
-----------------------------------------------------------------------------------------
Autodesk Inventor 2015 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2015-SP1 64-bit
http://www.autodesk.com/edcommunity
http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
Member
MrNickBarker
Posts: 4
Registered: ‎12-04-2012
Message 5 of 8 (916 Views)

Re: Parallelogram mechanism

12-05-2012 08:33 AM in reply to: MrNickBarker

It allows me to export to SAT, STL or STEP. When saving there is no option to choose type, it just saves it as f3d.

Board Manager
Phil.E
Posts: 375
Registered: ‎06-29-2012
Message 6 of 8 (909 Views)

Re: Parallelogram mechanism

12-05-2012 09:50 AM in reply to: MrNickBarker

Looking at your model I see a few problems. See attached image.

 

The joint origins are not lined up. This will cause the mechanism to bind. A mechanism like this requires the same joint origin spacing on both parts that the link bars are linking.

 

Please mark this response as "Accept as Solution" if it answers your question

 

 



Phil Eichmiller
Software QA Engineer
Fusion Quality Assurance Team
Autodesk, Inc.

Member
MrNickBarker
Posts: 4
Registered: ‎12-04-2012
Message 7 of 8 (905 Views)

Re: Parallelogram mechanism

12-05-2012 10:38 AM in reply to: Phil.E

Thanks, thats what I figured.

 

Is there an easy way to align joint origins or to snap them toghether? A link to a tutorial would be apreciated (I've watched the esentials videos).

Board Manager
Phil.E
Posts: 375
Registered: ‎06-29-2012
Message 8 of 8 (899 Views)

Re: Parallelogram mechanism

12-05-2012 10:56 AM in reply to: MrNickBarker

Use [sketch>circle>extrude cut] to accurately locate holes. Use the holes for Joint Origins. Or use other geometry such as edges or corners that the Joint Origin command wants to snap to.



Phil Eichmiller
Software QA Engineer
Fusion Quality Assurance Team
Autodesk, Inc.

Post to the Community

Have questions about Autodesk products? Ask the community.

New Post
Announcements
Do you have 60 seconds to spare? The Autodesk Community Team is revamping our site ranking system and we want your feedback! Please click here to launch the 5 question survey. As always your input is greatly appreciated.