×
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

Formed Datum Curve - WF2.0

Formed Datum Curve - WF2.0

Formed Datum Curve - WF2.0

(OP)
I am trying to form a datum curve around a cylindrical surface for the purpose of making a helical datum curve.
(I cannot use an Rho,Theta,Z equation for this datum curve).

I am able to WRAP the straight datum curve onto the cylinder's surface.  The pitch is determined by the length of the straight datum curve (measured perpendicular to the axis of the cylinder).  When I increase that dimension to a value in excess of the cylinder diameter, the formed datum curve fails.  Why?  How can I stop it from failing?

Thanks,
Glenn

RE: Formed Datum Curve - WF2.0


From your description I'm not certain what the problem
might be. The two reasons for a failure I can think of
are ...
1) You're using an inappropriate Origin; Center (sketched
   curve midpoint) or (sketcher) CSys.  The plane normal
   origin projection must intersect the target surface.
   Play with the function a bit. It's pretty logical.
2) You're running the curve off the end of the cylinder,
   in which case you can use the Trim at Boundary Option.

FWIW, my problem with the Wrap function for helical curves
is the grande part bounding box that can be the result.
You might reconsider Curve from Equation (it can be linked
to model parameters) or consider a helical sweep (or VSS;
requires you to hold your mouth just right but is probably
the easiest to set up once you know how) and (gives you a
cylindrical surface association) intersection curve.

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