BRL-CAD provides several ways to model 3D geometry including a graphical tool named mged, another named archer, and various ways to create geometry using scripts. We use 3D models for development and to showcase our features. You can learn the basics of 3D modeling in just an hour or two.
This task involves modeling a gerotor. This is basically a cool pump. Your job is to model it natively using any of BRL-CAD's tools (i.e., don't model it in something else and import) using 3D primitives and Boolean operations (i.e., without using 2D sketch entities or polygons).
The gear set should be accurately modeled in such a way that it can be printed using a 3D printer. This means that the model should have regions defined for each part and no overlaps (use rtcheck and/or gqa commands to verify). Create one top-level combination to group everything together.
References:- http://en.wikipedia.org/wiki/Gerotor
- http://www.pumpschool.com/principles/gerotor.asp
- https://www.youtube.com/watch?v=nodDVMl-nLA
- Introduction to MGED at http://brlcad.org/wiki/Documentation
- Submit your model as a .g file (BRL-CAD's geometry file format) and a rendered PNG image. You can run "rt -s1024 -o your_rendering.png your_geometry.g your_top_level_object" to create a PNG rendering of your model.
File name/URL | File size | Date submitted | |
---|---|---|---|
gerotor.zip | 82.4 KB | December 17 2014 11:03 UTC | |
gerotor.zip | 62.7 KB | December 17 2014 14:59 UTC | |
gerotor2.zip | 65.0 KB | December 18 2014 08:48 UTC | |
gerotor_final.zip | 67.3 KB | December 18 2014 11:35 UTC |
I would like to work on this task.
This task has been assigned to Vladimir Kuznetsov. You have 100 hours to complete this task, good luck!
The work on this task is ready to be reviewed.
but I'm missing the shaft at the middle of the small wheel (wheel1.r has no hole for s1) and the intake and exhaust. Further more, why are some of your cones leaning? And you should create a group containing everything.
One of the mentors has sent this task back for more work. Talk to the mentor(s) assigned to this task to satisfy the requirements needed to complete this task, submit your work again and mark the task as complete once you re-submit your work.
The work on this task is ready to be reviewed.
But there are still some points:
One of the mentors has sent this task back for more work. Talk to the mentor(s) assigned to this task to satisfy the requirements needed to complete this task, submit your work again and mark the task as complete once you re-submit your work.
Sorry, there are not holes in wheel2.r. See http://www.pumpschool.com/images/Gerotor_Pump.jpg.
The work on this task is ready to be reviewed.
Do the following changes and I'll accept it:
One of the mentors has sent this task back for more work. Talk to the mentor(s) assigned to this task to satisfy the requirements needed to complete this task, submit your work again and mark the task as complete once you re-submit your work.
The work on this task is ready to be reviewed.
Congratulations, this task has been completed successfully.