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Unread 16-01-2017, 15:03
Roboshant's Avatar
Roboshant Roboshant is offline
Design Lead 17, Scouting Captain 16
AKA: Dikshant Sharma
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Re: Turret Mechanism

There are a couple options:
Andymark turret: Probably a bit too big for the fuel this year (unless you're doing a double shooter lol)

Use a belt wrapped around some type of tube with a pulley as the pinion
-399 did this in 2012
- You would need an outer circle dimension for this.
- You could probably find this dimension for the HTD belts that AM and VEX sell if you look hard enough
-Another option would be to use McMaster belts/pulleys (could possibly interface pulley on to a cim output versaplanetary)
-This method is like making a turret gear without actually making it. Could be something to look at if you don't have good machining capabilities.

Gears
- Custom cut if you have waterjet access ( inventor has a tool for auto-generating gears)
- make sure any pinion gear you use is compatible with the turret gear (standard FRC sizes 20 dp with 14.5 degree pa or 32 dp with 20 degree pa)
- Would probably be easier to interface with current FRC COTS components
- As mentioned above take a good look at 254s 2016 robot. Also look at TBA design hub for 2012 robots with turrets. 1114 2012 is also a good robot to look at (cad here).

to actually mount these on to your robot look at some of turntables found here: https://www.mcmaster.com/#lazy-susan-bearings/=15xunfe

edit: you can find outer circle in mm for 5mm pitch htd belts here
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Last edited by Roboshant : 16-01-2017 at 16:00.
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