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FelixCC2009 (Mechanical) (OP)
20 Jan 10 7:26
Hello everyone, I have one more question.

Can anybody tell me if it is possbile to assemble bolt and nut in NX6 as reality? (Screw in screw, rotating when fastening or loosening)
Helpful Member!  joycejo (Aerospace)
20 Jan 10 9:36
Do you mean as an animation?

John Joyce
Tata Technologies
1675 Larimer St.
Denver, CO
www.myigetit.com

NX5,6, 7 Solid Works, Solid Edge

hudson888 (Mechanical)
20 Jan 10 18:47
For animations I just cheat! Which is to say I vary expressions to change the distance according to the number of turns I'm showing to drive another expression for angular orientation.

In creating animations it is all driven from the expression FrameNumber (using that exact syntax and capitalisation. This increments per frame and simply allows you to show your assembly moving as if it were quite real. I have several examples of screws etc, but they're all still embargoed.

If you post back saying this is in fact what you wish to achieve then I can set you an example.

Best Regards

Hudson

www.jamb.com.au

Nil Desperandum illegitimi non carborundum

FelixCC2009 (Mechanical) (OP)
21 Jan 10 6:54
Ummm, actually, I mean during the assembly. As the picture shows, I don't want these screws look like interfered.

On the other hand, it will be really appreciated if you could show me how to do it in animation.
(I once watched a video showing a whole engine assembly including those bolts flying, rotating and fixed into the body. I try to make a similar movement in NX all through.)
joycejo (Aerospace)
21 Jan 10 9:19
Attached in the .zip file are a nut and bolt assembly as well as an .mpg file from the animation tool in NX.

Open the assembly and look at the expressions.   The FrameNumber expression is the key.  This is used to control the distance mating condition as the angle changes.

Select View - Visualization - Create Animation and select the screw animation from the list.  As the animation is created the FrameNumber expression is incremented for each frame in the movie. I would suggest reading he help docs on this topic for detailed information.  

This was done in NX5 so the components are mated.  Have fun
 

John Joyce
Tata Technologies
1675 Larimer St.
Denver, CO
www.myigetit.com

NX5,6, 7 Solid Works, Solid Edge

JohnRBaker (Mechanical)
21 Jan 10 10:23

Quote:

Ummm, actually, I mean during the assembly. As the picture shows, I don't want these screws look like interfered.

Are you suggesting that you're creating assemblies with screws with fully-detailed threads?  Is this assembly being used to create high-quality or photo-realistic renderings or what?

BTW, your 'pictures' were invalid.

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/

To an Engineer, the glass is twice as big as it needs to be.
 

hudson888 (Mechanical)
21 Jan 10 19:07
I couldn't download your bitmap, but if and when you do repost it may I suggest a nice small Jpeg is usually preferred.

Best Regards

Hudson

www.jamb.com.au

Nil Desperandum illegitimi non carborundum

FelixCC2009 (Mechanical) (OP)
22 Jan 10 11:53
I uploaded the image again as a Jpeg version. I hope it could show my question clearly.

 
JohnRBaker (Mechanical)
22 Jan 10 13:27
Your best bet will be to slowly rotate and translate (by dragging using Move Component) the 'stud' until you get the desired result (you should be able to do that while the model is 'sectioned' so that you can see what you're getting in real-time).

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/

To an Engineer, the glass is twice as big as it needs to be.
 

looslib (Mechanical)
22 Jan 10 13:33
You also need to be sure you have the same thread pitch on both parts! From your image, the bolt has a finer pitch than the nut.
 

"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli

FelixCC2009 (Mechanical) (OP)
23 Jan 10 4:23
So, even if I make threads to match each other, it is still impossible to achieve this kind of assembly by automatic constraint?

Thanks, guys.
JohnRBaker (Mechanical)
23 Jan 10 19:16
You might try a face-to-face 'Touch' constraint, but in all honesty, no one has ever asked for nor have we ever considered having something which was specifically designed to 'mate' threaded elements.  It just has never been a priority and I can't see how it ever would be.

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/

To an Engineer, the glass is twice as big as it needs to be.
 

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