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#1
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
This is the message I got. I looked through the folder and couldn't find the part.
http://1drv.ms/13s7hOI |
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#2
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
I re-uploaded the model; try downloading again.
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#3
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
Is it just me or did the Download All button go missing. I now have to download all of the files individually.
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#4
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
Missing for me too. That's odd.
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#5
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
Could it be a setting in the project?
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#6
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
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#7
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
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#8
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
Very nice. Our team has had laser cut chassis for the past two years, but they are nowhere near as modular as yours.
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#9
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
Quote:
Do you guys have any experience with wood gearboxes or bearing press fits? We're trying them on this robot but won't have much time to test them before build season. |
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#10
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
Quote:
Is your chassis held together entirely with T-slots? We thought those would not be strong enough, so we use wood glue for everything. It probably helps that you are using 1/4" plywood, rather than 3/16". |
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#11
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
Quote:
Press fits in metal are pretty precise. 0.001" smaller than the bearing is a light/ medium fit, whereas 0.002" is a heavy press fit, for the usual FRC bearings. Wood would be more forgiving on the size. |
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#12
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
Like z_beeblebrox was saying, the number varies due to the laser kerf, as well as the softness of the wood. If you haven't tried it before, I would cut a test piece with different sized holes in 0.001" increments to determine the ideal size. The other option is cutting holes slightly too small and sanding the inside until the bearings press fit.
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#13
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
Quote:
We've experimentally found that cutting the bearing holes .006" undersize compensates for kerf and gives a pretty tight fit. I imagine that this number varies with laser model and material. |
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#14
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
Thank you, I will file that away for when we use wood.
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