Hey guys,
I am trying to build a 4 cube claw and I’m having trouble with compression, basically, the bottom cube will drop out of the claw and the rest are soon to follow. Just if anyone has any general tips that would help a lot. (My coach doesn’t want me to post any pictures of it sorry)
make claw narrower and stronger and it will fix all your problem
maybe band the claw closed to get the passive force applied to the cubes.
A picture would help. How many compression points do you have where you have power pressing the arms closed? How are they spaced?
I have the typical plate design with 2 arms on each side connecting it to the driven axel, one at the top and one at the bottom
You should have grip parts too. (Rubber bands, adhesive foam, etc.)
i have slip mat up and down the whole contact pannel thingy and i have screw that will notch into the bevels in the cubes themselves
Is the amount of compression level throughout the claw?
as far as I can tell
Where is the arms that connect the plates to the claw arms located? at the base of where the claw holds the cube, the middle, or the top? It sounds like there’s not even pressure coming from your claw.
the part that contacts the cube is 1X3X33 aluminum c-channel, I have it connected to the shaft at the bottom and the top
Is the spacing correct? So it doesnt go in and compress just the front of the cube, it compresses the back too?
it compresses the two sides of the cube
What is the gearing of the claw. I have seen a lot of teams mistakenly go 1:1 on their claws.
What gear ratio is the claw?
ratio on the claw is 100RPM motor (one per side) geared 1:1
Okay I’d recommend trying 1:3 at least, and maybe 1:5. Do you currently have a motor hold?
remind me again what a motor hold is
motor.stop(brakeType::hold);