Contact US

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!

*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




 I made a model (Geneca wheel) consisting of 4 parts.
 Part1 = base part with 2 shafts
 Part 2 = driver wheel with 1 pin
 Part 3 = roller in the pin
 Part 4 = Geneva wheel with 6 slots   
 I am trying to simulate this model with 3 revolute joints
 (shaft axis + wheel axis and center pin + roller)
 and 1 prismatic joint (between a line and a plane on
 the roller) with a line and a plane in one slot of the
 geneva wheel.
 Of course, the base part is fix.
 When I simulate this mechanism, it works for one slot
 and after a certain angle of rotation, the Geneva wheel
 returns to it's original position...( it does not see the
 other slot).
 Is there a way to apply the prismatic joint to the other
 slot without over constraining the model ?
 Can you help me to find a solution so it will rotate for
 all the other slots




i've just read your problem, and i figure out that you misanderstand some of the basic kinematiks rules: your slider cannot do the job because sometimes it should be ON and sometimes OFF. This cannot be ( or have fun with VERY ADVANCED knowledgeware).

So you gotta think differently and give the system the link between the 2 rotation, i mean a POINT on CURVE relation. It does work, but you will have a very pleasant time finding the right curve !! You even may have to cheat a little bit, but dont tell other..

i ve done it, it does work

Have fun,



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! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close