Axis system versus Planes
Axis system versus Planes
(OP)
i'd like to know what you all prefer and why. using mostly axis systems or planes to sketch on. i've been using catia for a few years now and have had several classes, i come from an I-deas background. i've been told in one class to use planes and never use the axis systems because they are unreliable, on the other hand, in a recent class i was told you should always sketch on an axis system. i'm curious, whats your two cents?





RE: Axis system versus Planes
1. Only use Positioned Sketches, because they provide associativity. They can be based on Axis Systems or Planes.
2. Use multiple Axis Systems to identify major components and features, because they can be repositioned.
3. Never use the primary planes (XY, YZ, ZX), because they cannot be repositioned.
4. OK to use user-defined planes
We have never experienced problems with Axis Systems - that instructor didn't know what he was talking about! A single Axis System provides 3 planes, 3 axis, and an origin point.
We do use a "skeleton" methodology for relational design, but we do not use the contextual design features in CATIA.
RE: Axis system versus Planes
RE: Axis system versus Planes
I will, however, use Axis systems extensively when detailing aerospace parts. Because most of the components have a master axis system that they tie to (which can be a mile away), I need to create a local axis system on the part to generate proper holes tables and coordinates in 2D drafting workbench.
http://mtm-cadtutorials.blogspot.com/
RE: Axis system versus Planes
To me, planes seem to keep the model a little less cluttered. On the other hand, having multiple axis systems is very handy when you are setting up loads in an analysis file.