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 After it took us weeks to machine sideplates for our 8WD, seeing their simple yet effective drivetrain was a huge "forehead slap" moment. - Chris is me [more] |
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By: Tristan Lall
New: 31-08-2004 21:22
Updated: 31-08-2004 21:22
Total downloads: 1253 times
This report details the design, construction and performance of (team 188) Woburn Robotics' 2004 drivetrain. It featured six driving motors (Bosch, CIM and Fisher-Price) and a two-speed transmission (using pneumatically actuated shifting dogs). The robot, Blizzard 5, was capable of a top speed of a...
This report details the design, construction and performance of (team 188) Woburn Robotics' 2004 drivetrain. It featured six driving motors (Bosch, CIM and Fisher-Price) and a two-speed transmission (using pneumatically actuated shifting dogs). The robot, Blizzard 5, was capable of a top speed of approximately 16 fps, and a low-gear speed of approx. 4 fps.
The report was originally submitted for credit at the University of Waterloo by Tristan Lall (an alumnus of team 188, Woburn Robotics and a first-year mechanical engineering student) who designed and constructed the gearboxes.
(In case this file is not accessible here, it is mirrored at http://www.team188.com. Pro/ENGINEER 2001 Student Edition CAD files may be made available later, pending the availability of webspace. See the discussion thread for updates.)
Attached Files
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Team 188 Woburn Robotics 2004 Gearbox Design Report
1094001735a_multi_speed_electric_drivetrain_for_competitive_robotics.pdf
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uploaded: 31-08-2004 21:22
filetype: pdf
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Discussion
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31-08-2004 23:50
Tristan Lall
Re: White Paper Discuss: Team 188 Woburn Robotics 2004 Gearbox Design Report
I've noticed some renewed interest in gearboxes lately, especially the multi-motor variety. With that in mind, this is a copy of my 1A (first-year, first-co-op-term) work report, written as a requirement for a co-op work term in the mechanical engineering program at the University of Waterloo. In it, I describe my design for the 2004 robot's six-motor, two-speed drivetrain that was used successfully by Woburn Robotics (team 188) during the competition season.
Please note that, while lengthy, this report wasn't intended to guide a team through all the ins and outs of building the gearboxes it describes--rather, it was intended for an academic audience (a co-op program co-ordinator), so it discusses the design process and illustrates it with several drawings and diagrams. Even so, I hope it's helpful; I welcome comments, questions and even criticism, constructive or otherwise....
01-09-2004 11:15
JVN
Re: White Paper Discuss: Team 188 Woburn Robotics 2004 Gearbox Design Report
Tristan,
Read the report. Thank you for your acknowledgement.
Glad you found some use for my whitepaper.
Good Luck in 2005,
John
01-09-2004 12:46
Swampdude
Re: White Paper Discuss: Team 188 Woburn Robotics 2004 Gearbox Design Report
Wow, nice!
17-03-2009 14:21
hurtzmyhead
Re: White Paper Discuss: Team 188 Woburn Robotics 2004 Gearbox Design Report
It appears as if the link to the autocad file is no longer valid... could it be posted again? thanks
17-03-2009 18:45
Tristan Lall
Re: White Paper Discuss: Team 188 Woburn Robotics 2004 Gearbox Design Report
I don't believe that I used AutoCAD at all for this, so I'm not sure which file you mean.
Do you mean the Pro/ENGINEER CAD files? I have those, and can arrange to post them or send them, if you'd like. Actually, I've also got a design for an uprated version of this gearbox (that we never built). It's pretty much the same, but with small improvements to make it more durable, lighter and more maintainable. Let me know if you can use that data.
One other thing: in addition to a CIM FR801-001, this gearbox was designed to use the Bosch/Scintilla 3360 drill motor that was in the 2003 and 2004 FRC kits, and the Fisher-Price/Johnson BP03027 motor from the 2004 kit. Gear ratios, pitches and positions are selected to work around those two old motors, and as a result, even though the design will probably work with current hardware, it's not going to be optimal.
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