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Grabber 2015

Attendance

Note Info

Students
Mentors
Date & Time
Location & Author
  • 1/5/2015

  • 3 hours

  • Bot Shop

  • Aleksey D.


Notes

Durring the meeting from 1 P.M TO 4 P.M we built prototype grabbers by rolling duct tape and taping plaxion to 2x4s. We pushed in on the 2x4s as they were pressing against the tote, and we had the scales pressed up against the 2x4s to get a rough estimate of the amount of force needed on either side. the main concern that day was figuring out how much force was needed to lift this stuff.

Durring the meeting from 6 P.M TO 9 P.M we did math and physics to figure out the force needed to push up and hold the totes and containers. We took into account the weight of the tote and the angle that the tote sloped on either side (used iphone protractor and estimated about 3 degrees). This math was incorrect, but we tried anyway.

Work Completed

Found out that we need 74.5 LBS of force on each side


Angle of the tote= 3 Degrees

Weight= 7.8

27IN horizontal side

 

There are sketches of the tote with the angle and some math that we did in one of the workbooks, but I can't really find it. To be honest it's not really important, as it isn't important robot information but rather just us flailing around with physics equations.

Challenges

We have no idea how much force is required to lift these totes and we aren't too sure about calculating using coefficient of friction, and this is crucial to finding out what kind of piston we need. Pistons output a buttload of force so we're pretty sure that we'll be fine, but it would be nice to account for friction and multiple totes and all, so we should definitely be sure. Last year this was a big problem we had with pistons, so we need to be sure this time. 

Work for Next Meeting

We need to figure out which piston we need to buy and how much space our apparatus would take up.

On Schedule?

yes