Inventor General Discussion

Inventor General Discussion

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Active Contributor
stoob
Posts: 43
Registered: ‎01-24-2011
Message 1 of 7 (4,663 Views)
Accepted Solution

Motion constraints - Turning a screw in a hole?

4663 Views, 6 Replies
04-01-2011 03:28 AM

I am pretty familiar with Assembly constraints but I want to know how do you constrain/motion a screw or similar object to be able to turn appropriately whilst going up & down a threaded hole?

 

Any help would be great.

 

Cheers

Employee
johnsonshiue
Posts: 2,097
Registered: ‎04-30-2008
Message 2 of 7 (4,631 Views)

Re: Motion constraints - Turning a screw in a hole?

04-01-2011 11:49 AM in reply to: stoob

Hi! There might be other ways to do it. But, the most straight forward one I can think of at this moment is the following.

 

You have a screw part and a component with a hole. The screw needs to move along the hole axis. I assume you have already create axial Mate constraint for the two. To make the screw rotate during a translation movement, you need another trigger to do that. I do not think the screw can rotate by itself based on how Inventor asembly constraints work. The solution is to create a piggy-back part. It can be a simple box part. and it is constrained to the screw in a way that when screw moves the pb part will follow. Next add a Motion:Rotation-Translation constraint between the screw and the pb part. After that, when you drag the pb part, the screw will move and rotate.

Would it work for you?

Thanks!

 



Johnson Shiue (johnson.shiue@autodesk.com)
Principal SQA Engineer, Inventor
Mechanical Design
Autodesk, Inc.

Active Contributor
stoob
Posts: 43
Registered: ‎01-24-2011
Message 3 of 7 (4,615 Views)

Re: Motion constraints - Turning a screw in a hole?

04-01-2011 02:08 PM in reply to: johnsonshiue

This is a great reply although I find it quite difficult to set up, would you be able to supply a quick assembly example? :smileyhappy:

Employee
henderh
Posts: 650
Registered: ‎06-07-2007
Message 4 of 7 (4,603 Views)

Re: Motion constraints - Turning a screw in a hole?

04-01-2011 02:45 PM in reply to: stoob

Here you go!  (assembly attached in zip file)

 

  You can change the pitch using the translation / rotation constraint distance parameter

 

Thanks, -Hugh

 

NG_Turning_Screw_in_hole.png



Hugh Henderson
Simulation QA Engineer
DLS
Active Contributor
stoob
Posts: 43
Registered: ‎01-24-2011
Message 5 of 7 (4,586 Views)

Re: Motion constraints - Turning a screw in a hole?

04-02-2011 12:09 AM in reply to: henderh

Awesome and really neat! Thanks for that great example and working on it. I love these forums! :smileytongue:

I had a go myself and I understand the principles to this.

 

It would be good if Inventor had this function written into the program where you just have to move the part you want moved and rotated, on my wish list!

 

S

Valued Contributor
WillieArolf
Posts: 93
Registered: ‎04-25-2011
Message 6 of 7 (4,205 Views)

Re: Motion constraints - Turning a screw in a hole?

02-06-2012 04:56 PM in reply to: johnsonshiue

To make the screw rotate during a translation movement, you need another trigger to do that. I do not think the screw can rotate by itself based on how Inventor asembly constraints work

 

Hi,

 

Its kind of weird though that, you need to have another object in order for the screw to rotate. I also do not have idea as to how to make the screw rotate. There are few youtube videos showing a screw rotation. How did they to that?

 

If I need to animate a screw rotation. Any tips woukd be appreciated.

Thanks & Regards,

Willie
Autodesk Product Design Suite Premium 2012
Windows 7, 64-bit
*Expert Elite*
JDMather
Posts: 26,577
Registered: ‎04-20-2006
Message 7 of 7 (4,187 Views)

Re: Motion constraints - Turning a screw in a hole?

02-07-2012 04:05 AM in reply to: WillieArolf

The dummy part is not needed.

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