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pic: CV Robotics WCD 6wd Drivebase Prototype
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
Why are you not using Versa Blocks?
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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1. We wanted to enter a new field this year with machining. Something as simple as slots for them is a good practice that is not super complex. 2. It gives a MUCH cleaner look. 3. Although super minimal, it saves space and some weight. |
Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
I think a waterjetted bellypan only makes sense for a handful of teams (and it's still wastefull then...)
Garolite or 4-6mm high quality plywood are plenty strong, and easy to mount electronics too. My personal preference is the wood painted black. the water/laser time put into a bellypan can cut out several systems worth of parts elsewhere on the robot. |
Re: pic: CV Robotics WCD 6wd Drivebase Prototype
Looks great guys!
And I wonder how many people went looking for Glossy CIMs after seeing this post. (Guilty.) :p |
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Before you take the time preparing to go to your sponsor and make the test parts I recommend you talk to an operator first. They will know the machine and it's limits and can tell you if your parts can be made on their machine and even give you tips on how to design your parts to be easier to cut. The main things you need to convey to the operator is the materiel, its thickness, and the complexity (run time) of your parts. With that information they should be able to tell you if they can cut them without the sheet warping. There a several teams with in house CNC plasma cutters, you should be able to find them with a quick search. I would recommend talking to them as well, they can provide you with valuable insight on how to best utilize a plasma cutter for an FRC team. -Adrian |
Re: pic: CV Robotics WCD 6wd Drivebase Prototype
Looks nice guys. Will you have a prototype on your Bunnybot robot or will you be using another drive train? For last year's Bunnybot competition, we field tested our first swerve modules on 2471-A. It was a valuable system for us and I recommend it for you guys if you have the time and budget. Of course, a gen 1 swerve drive is bound to have a few kinks to work out, but you never know. It's just a tip.
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
If you do insist on having a machined bellypan, make yours lighter. We shoot to have ours be around 1.5 lbs for an 1/8" thick sheet of 6061 aluminum. I noticed the strand thickness on your bellypan is much thicker than the thickness we usually design for, so you could probably go a lot thinner than you currently do.
Spoiler for A useful tip:
I'm assuming you are choosing to use a custom transmission because it fits your resources better than a COTS one, though if it doesn't I could always lead you to some sources about why COTS transmissions are a great solution. All that aside it looks like a very promising design that will serve you well should you choose to use it for the 2015 season. |
Re: pic: CV Robotics WCD 6wd Drivebase Prototype
Why did you guys decide on using chain instead of belts?
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I'd prefer a COTS gearbox over this one, but we use the gearboxes to teach advanced CNC code to students. All of the CNC code used to mill these gearboxes is handwritten. The only other advantage to this gearbox for us is it sits much lower than a WCP or Vex gearbox in the frame. Personally, I'd like a 2-stage gearbox (16.8 FPS is high) w/ shifters, but team history precludes that effort for the time being. Quote:
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I wasn't aware you could add cams to this type of bearing block |
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