modeling best practise 1

[sbrats]

Just out of curiosity on how others do their work, when modeling a cast part - say an engine block, do you start with a big chunk and remove material or do you build a piece at a time. Same with a plastic molded part - start with a big block and cut away ?

TIA

S

 

[hydromech]

I find that feature based parts work best. But occasionally, when modelling volutes for water pums its better to cut a solidified surface from a solid.

 

[Guest0527211403]

There is no real advantage to modeling a cast engine as a block and removing material feature by feature, since casting is a net shape forming process anyways. It may be beneficial to use your proposed technique when designing parts which are machined, since it then becomes possible to represent the part at various stages of its machining process through feature suppression.

For something as complex as an engine block is best to capture critical geometry first (working axes, critical/mating surfaces), build UP the model using simple features(k.i.s.s. principle should be used), and finish the model with features that make the part manufacturable (ie drafts, rounds).

good luck

 

[josephv]

Hello all,

Good day, I have a very similar question. We will receive from a customer a cast part in Pro/E. We would like to create a new part that links to the cast part (so that if the cast part changes the new part changes). This new part will be the machined part (i.e. we will add holes, cut material and remove draft).

What is the best way to do this in Pro/E?

My apologies, I have been using SWX too long. In SWX we would create a base part and a derived part. Is there something similar in Pro/E? I haven't found anything in the Pro/E help yet/

Thanking you in advance,

Joseph

 

[josephv]

Okay... after some research it seems that using a part for the cast part, and an assembly with assembly features for the machined "part" is best way to do this.

Cheers,

 

[robertib]

The other way is to use the cast part as a generic in a family table.

 

[acciardi]

Actually, I believe the recommended practice is to create a new model for the machined part, and "inherit" the cast model by using an inheritance feature.