Simple Modelling Question

[PhysicsDude]

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.

 

[looslib]

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

 

[demco]

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

http://www.dl-engineering.com