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View Full Version : [Question(s)] 12" 12V Slewing Drive/Worm Gear



jkornoff
04-01-2011, 08:55 PM
Hello to the robotics forum. This is my first post here and I was hoping someone may know of a source for lighter weight 12VDC slewing/worm gear drives. Everything I'm finding on Google is for industrial purposes (think excavators and wind turbines!).

I'm building a medium sized tank-like turret camera platform. I found a great turntable bearing from McMaster-Carr, about 10.5" in diameter, but adapting a custom slewing ring and gearmotor poses it's own challenges. A slewing drive accomplishes the same task and it's all one assembled unit.

How do you guys typically handle turret-type bearing mechanics when moving beyond just stacking one servo on top of another (like the turrets offered for sale by Trossen).

Thanks!

http://i01.i.aliimg.com/photo/v0/279506579/Slewing_Drive_with_12V_or_24V_Electrical.jpg

cire
04-02-2011, 07:52 AM
I know a lot of FIRST robotics teams use a sprocket as their turn table surface, and then drive the whole thing with a chain. This probably would be easier to set up then a custom worm gear if you cant find one (less parts, less accurate machining required). As for a source for small units like you are talking about - I am sure they exist but I don't know where you might get them.

msprague
04-02-2011, 07:14 PM
I know this is different mechanically than what you are describing, but maybe you could adapt one of these:
http://www.servocity.com/html/heavy-duty_pan_systems.html

jkornoff
04-03-2011, 11:13 AM
I know this is different mechanically than what you are describing, but maybe you could adapt one of these:
http://www.servocity.com/html/heavy-duty_pan_systems.html

Thanks for the link! Unfortunately, this setup is too light-weight. My camera setup is an array of 4 heavy cameras mounted to the top of a jeep so it's got to handle quite a bit of off-road bumps and jumps.

I'll keep looking!