My team does not have pneumatics kit and has tried multiple different ways to built a mobile goal clamp that can still hold the mobile goal in place without pneumatics. We have used a gear ratio with a green motor to try to achieve high torque to keep the mobile goal in place but it just keeps slipping.
All ideas are welcome and pictures would be amazing!
Thank you all so much in advance!
Well… there’s quite a few of the same question already posted:
You are on the right track - you can use a high torque gear ratio for your green cartridge, then determine what position works best to hold mobile goal… It is up to you to determine what parts you have to clamp - c-channel parts, rubber bumper feet, etc whatever you are comfortable using.
In terms of coding, you can configure break mode for your clamping motor to be coast, break, or hold. Each are documented in VEX library.
No one can tell you what to build as you only know the parts you have, and experience to research at your team’s ability.
Thank you so much!
We have a prototype that works okay but we are trying to make it so that are clamp works really accurately every time.
We will definitely work on our code and try to recreate different modes for the clamp like you suggested. Hopefully the code works great and our robot works well for our next tournament.
Thank you!
I have looked into those and wasn’t able to find much but I will keep checking to see if I can find something that works.
Just posting to see if anyone had any new ideas later into the season!
Another resource for motor clamps I want to throw out there is the BLRS 2 tipping point dizzy explanation. I will attach a link, and I believe it is explained at 1:30 in the video. Hope this helps!
Video here
I would recommend building a locking clamp that uses a motor. This will save your motor from overheating and will hold the goal in just as well as pneumatics.
I’m using a green motor my my mogo mech and it just doesn’t hold the mobile goal in place and slips I got some ideas from other people, they said to use 2 red motors and said to set the torque to 100% in the code, I want to get some advice on this design from, you guys since this is my first year working on vex v5 robots
Using two red motors and/or gearing the clamp would improve grip strength, but you would use battery power whenever fighting to maintain possession. It’s possible you still might overheat the motors.
J.4 gave you some links to forum posts with some decent information. If you have the time to redign the clamp, I would reccommend an over-center locking clamp (I show an example at the bottom of the 2nd post J.4 linked). It only uses the motor to open and close, not to stay closed. Once closed, it is nearly impossible to open unless you run the motor… it acts like a pair of vise-grip locking pliers.
Thank you but I’m still not sure how to make a locking clamp, if someone could send me some pictures it would be great
not to be too rude… but… did you search the forum (there are numerous posts about this - with pics - there was one in the post I linked earlier)
Here is page one from a Google image search.
I believe 8889A has a locking clamp. They use pneumatics, so the design may not work with motors. Here is a video (yes, I attempted to Ctrl+K this):
8889A 99% | Pits & Parts | High Stakes Robot
YouTube · FUN Robotics Network
Dec 21, 2024
