×
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

Simple Modelling Question

Simple Modelling Question

Simple Modelling Question

(OP)
Hi,

What is the best technique to create an assembly of two parts wherein:
Part I. Is a spheroidal solid
Part II. Is a solid with a spheroidal inside surface that is concentric to part one.
Upon "assembly", I do not want to mate the parts, but to keep them separated by a nominal gap while ensuring the the surfaces are concentric.  In real life, the assembled components will never touch but will be separated by 0.1mm.

I've tried all of the following, but am not happy with any thus far because it makes the modelling tedious for my large assembly:
1. Make two separate parts, and restructure each part in accordance with some common interpart expressions at the assm level.
2. Make three separate parts: part I, part II, and the common surface (which is a sectional spheroid), and then create the assm.
3. Just put both solids into a single part.

RE: Simple Modelling Question

Create the first part.
Create a block in a new part, bring in the first part and create an offset surface cutting through the block, Trim the area of the block you want to keep with the offset surface.
Create an assembly of the two parts using absolute coordinates. (Be sure to use absolute coordinates in the first two solids.)

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

Ben Loosli
CAD/CAM System Analyst
Ingersoll-Rand

RE: Simple Modelling Question

Place Datum Planes in the spherodial centers, and using mating conditions, mate or offset the datum planes in the parts appropriately.

-Derek
DL Engineering Services

specializing in CAD Design Consultation Services
www.dl-engineering.com

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