As a team beginning to build our mid-late season bot, I was wondering what the best mogo clamp design is for a hook intake?
A tip is to use downward force rather than pulling force.
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We used a rubber stopper for ours along with 2 pneumatic pistons
whatever you find works best I would suggest using one piston in order to conserve air. we have a hook intake and our 1 piston mogo mech works great.
I would highly recommend using a motor attached to a chain connected to a t-shaped mechanism. This is what our team utilizes and it is SUPER consistent and strong. I’ll see if I can take a picture of it at practice today to show you.
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To build off, the exact design is similar to a c channel on a hinge, which is then powering in the back side via a piston. This allows the clamp to rotate, clamping a goal. One tip I would give is to use plastic and “mold” the shape of a goal on your robot, so when the goal goes to get clamped by your robot, the plastic rollers turn the goal so the clamp clamps it at one angle only.
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Thank you! Would you have a five motor drive with that?’
I see a lot of great points, but they all fail to mention their downsides.
A motorized mogo mech has the negative of overheating, possibly bending an axle, and just honestly being a poor use of a motor if you have access to pneumatic cylinders.
A single-cylinder mogo mech is a lighter way to go about it. Still, it doesn’t have the same strength as a 2 cylinder mogo mech without adding a decent amount of mechanical advantage to the mechanism.
These ideas are great, but a two-cylinder Mogo mech is a lot more consistent and, in my opinion, a lot simpler to build. while yes this design might be a little heavier than a single cylinder and use more air if built with poor mechanical leverage, it still saves a motor to be used on a different mechanism, and is far smaller than a single cylinder design.
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Do not use 5.5w in drive unless you really need to.
We have a six motor drivetrain and use a regular motor with a red cartridge for this clamp.
The motor is located behind the clamp and it’s better seen in the second photo.
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but then you will be using up a motor, should you rather use some pistons.
Would this still happen with high strength axles? My team uses a direct 100 rpm clamp with a normal axle, which does bend, but I would assume that high strength axles would hold up.
No, high strength axles are a lot stronger than normal axles and (at least from what I’ve seen) will not bend unless you hammer it against something repeately.
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While the high-strength axle will hold up, you now increase the mechanism’s total weight, which just makes it lower on the list of options for what type of mechanics to use.
If you are insistent on using a motorized clamp, maybe take a look at the dizzy clamp from the blrs2 15 inch worlds robot from tipping point, which In my opinion is by far the best implementation I have seen of a motorized clamp.
BLRS2 explanation here