Embedded Files
Introduction
Introduction
In this project I made a Hydraulic Robot Arm. This project focuses on the principles of hydraulic pressures.
Hydraulic Powered Robot arm.mp4Materials
Materials
super glue
hot glue
10mm syringes
double thick cardboard
woodencraft sticks
vinyl tubing,
zip ties
toothpicks
wooden dowel
heavy wire
Procedures
Procedures
Instructions for building the arm can be found at http://www.instructables.com/id/CardboardRobotArm
Scientific Explaination
Scientific Explaination
Hydraulics
Hydraulics
How it works (the physics part)
How it works (the physics part)
The basic rule of using hydraulic power is Pascal's Principle which says
pressure exerted on a fluid is distributed equally throughout the fluid.
Hydraulics uses incompresible liquids so the applied pressure from one end (small arrow) is equal to the desired pressure on the other end (big arrow).
The arrows point towards pistons that are free to move. When force is applied, the piston moves up or down
In order to move the larger area, the smaller area has to move a lot.
AIR IN THE SYSTEM
It is important that a hydraulic system contains no air bubbles. You may have heard about the need to "bleed the air out of the brake lines" of your car. If there is an air bubble in the system, then the force applied to the first piston gets used compressing the air in the bubble rather than moving the second piston, which has a big effect on the efficiency of the system.
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