Posts Tagged ‘ parts

Day 10: Prototyping, Manufacturing & Design Progress

Prototyping

Today, a prototyping group met to finish the roller prototype that was almost complete yesterday.  Round belt pulleys were fabricated and round belts were added so that one motor could be used to power both wheels simultaneously.  The prototype was made mobile and we tested picking up tubes off of the floor and spitting them onto pegs.  It works very well but has issues picking up the corners of the triangles.

Manufacturing

Today, the wheels were finished.  The first operations were performed on the chassis siderails which should be completed tomorrow.

Completed Wheels

Design

The design is coming along great.  The baseplate is almost complete and the spool gearbox is nearing completion as well.  We are on track to be finishing the robot design within a week.

Spool Gearbox

Day 9: Rollers Prototyped, Wheels Complete & Preliminary Electronics Layout

Rollers Prototyped

Today, our prototyping group finished putting together a jig for testing tube intake rollers.  The prototype was very successful and successfully picks up and holds tubes.  Furthermore, we were able to rotate tubes within its grasp by rotating the two rollers at different rates.

The design still needs to be tweaked for optimum tube grabbing performance.

The initial roller prototype. Driven by drills, the prototype is very effective at sucking tubes in and holds them quite well once they are in its grasp.

Manufacturing

After several days of hard work, the drivetrain wheels are finally complete.  During machining, there was an issue with the original CNC code where the spokes were not being milled deep enough.  This was resolved and the problem wheels were fixed.

Completed Wheels

The wheels look great and are visibly much smaller than previous wheels, as shown in the image below.  The wheels will be anodized by sponsor Pacific Coast Metal.

The Evolution of Cheesy Poof Wheels. From left to right: 2006 6" Wheels, 2008 4" Wheels, 2010 4.5" Wheels, 2011 3.5" Wheels.

The DXF CAD drawing for the gearbox sideplates was created and sent to Mike D of Team 233 for Manufacture.

Design

Today, the design team worked on the electronics layout, the spool gearbox and preliminary design for the minibot.  The electronics board is coming along great.  We are happy with the positioning of most of the elecronics but are still not clear on where we want our compressor.

Preliminary Electronics Layout

A second team worked on CADing the spool gearbox.  An issue arose where one of the needed gears was not available, so we had to modify the gear ratios slightly.  The design for the gearbox is coming along and should be finished tomorrow.

A third team started to analyze the parts available for the minibot and started to develop preliminary ideas for how to efficiently lift the small robot to the top of the pole.  Work will continue into the next week.

Day 6: Prototyping, Programming, Design & Manufacturing Progress

Prototyping

Today, we had a large group of students working to prototype mechanisms for subsystem 2 (tube grabber.  One group was working to construct a jig for testing roller prototypes.  The other group worked to think up alternate solutions for tube grabbing.

Several Team Members working on a prototype.

Ryan and Erik "Prototyping"

Programming

The programming team met today to refine the control of the robot during teleoperated mode.  Progress is being made.

Design

Today, several team members were working on the CAD Design of a part for the elevator carriage.  Furthermore, later in the evening, we continued working on the mounting interaction between the elevator and the drivebase.

Manufacturing

The machining of the bearing housings is finally complete.  After five long days of machining, all of the parts are done with machining.  After they are deburred and polished, they will be ready for anodizing.

Completed Inner Bearing Housings

Completed Outer Bearing Housings