Broken Gears?

[archiver]

Posted by ChrisH at 03/07/2001 11:13 AM EST


Engineer on team #330, Beach 'Bots, from Hope Chapel Academy and NASA JPL, J & F Machine, Raytheon, et al.



Has any of you EVER broken gears or the pins that act as axles for the planetary gears in a drill motor gearbox?

We've broken our share of gearboxes. Especially dragging around goals with last year's robot. It just wasn't geared for it.

We did a post-mortem on every one. While we broke lots of stuff, the gears or gear teeth were never on the list.

I may have over-estimated loads on a transmision I was planning to build until they changed the gear rules on us. If so look for it next year.

Chris Husmann, PE (who builds airplanes, not gearboxes, for a living)
Team 330 the Beach'Bots

[archiver]

Posted by Joe Johnson at 03/07/2001 12:12 PM EST


Engineer on team #47, Chief Delphi, from Pontiac Central High School and Delphi Automotive Systems.


In Reply to: Broken Gears?
Posted by ChrisH on 03/07/2001 11:13 AM EST:



The only failures we have ever had with the drill gearboxes have been the housings cracking (from poor design of the mouting mainly) or the posts on the powered metal part that functions as the carrier for the planets on the last stage (which we never use any more since we use DrJoesDrillShaft if we have to use the transmissions at all).

Other folks may have other failures to report.

Do tell...

Joe J.

[archiver]

Posted by ChrisH at 03/08/2001 8:31 PM EST


Engineer on team #330, Beach 'Bots, from Hope Chapel Academy and NASA JPL, J & F Machine, Raytheon, et al.


In Reply to: Only housings and the PM carrier posts
Posted by Joe Johnson on 03/07/2001 12:12 PM EST: