×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Use of Expressions to constrain gears in assembly environment

Use of Expressions to constrain gears in assembly environment

Use of Expressions to constrain gears in assembly environment

(OP)
I am using nx 7.5 and i wanted to constrain 2 gears in assembly environment. I read one post on using Expression Tool. Am not getting how exactly to use this. Please help me in this regard.Thank You.

RE: Use of Expressions to constrain gears in assembly environment

I suspect that the comment about using expressions with gears was not so much to 'constrain' them as it was to create a relationship so that when one gear was rotated that the other would rotate the proper amount as if they were constrained. The way you do this is to constrain both gears using an 'Angle' constraint, each of which will then have an expression controlling the angle-of-rotaion. Now you simply consider one of the 'gears' to be the 'driver' and you then relate, using the gear ratio, the angle of first gear to the second.

Attached is an example of a pair of gears that I've used the 'Animation' function to create a relationship between the two gears using expressions. After extracting the files, open the assembly file and then go to...

Menu -> View -> Visualization -> Create Animation...

...and when the dialog opens push the button labeled 'Preview Animation' and when the next dialog opens you'll see what essentially are VCR like controls. Push the 'Play' button to see the animation sequence of the gears.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
Siemens PLM:
UG/NX Museum:

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

RE: Use of Expressions to constrain gears in assembly environment

(OP)
Thank you

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources