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Unread 17-01-2017, 11:37
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FRC #2974 (WALT)
Team Role: Mentor
 
Join Date: Feb 2011
Rookie Year: 2009
Location: Marietta GA
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Re: Machining precision required to make custom gearboxes

Quote:
Originally Posted by Cory View Post
While what you describe certainly could be done by someone with very steady hands, good eyesight, and great attention to detail, I would argue that any team which only has a drill press shouldn't be considering building custom gearboxes given the plethora of great COTS options available.

Much more valuable to expend that effort on other areas of the robot.
I agree that you are better of buying the solution when one is available. The COTs choices have grown tremendously in the last few years. But one stage is fairly easy with 20 DPI gears. More than 2 stages becomes really difficult. I always take stated accuracies with a grain of salt.

In terms of drill presses. We are fortunate to have a heavy 1/2 press with good bearings. But I get as accurate results by using a 1/4 in Ryobi and either a short 1/8" bit or center bit.
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