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Mechanical System. Agenda. Mechanical Systems – Contest Outcomes Basic Pneumatics The Kit of Parts. About the contest. Emphasis on Design Techniques (Discussed tomorrow) Pneumatics Basics Components Symbols. About Pneumatics. One type of Fluid Power

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Mechanical System

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Mechanical system

Mechanical System


Agenda

Agenda

  • Mechanical Systems – Contest Outcomes

  • Basic Pneumatics

  • The Kit of Parts


About the contest

About the contest

  • Emphasis on

    • Design Techniques (Discussed tomorrow)

    • Pneumatics

      • Basics

      • Components

      • Symbols


About pneumatics

About Pneumatics

  • One type of Fluid Power

  • Main difference between pneumatics and Hydraulics: Compressibility


Mechanical system

F = PA

Tradeoffs?


Components

Components

  • Compressor

  • Pressure Switch

  • Pressure Gauge

  • Regulator

  • Tank

  • Flow Control

  • Directional Control Valves (solenoid valves)

  • Cylinders

  • Hose and Fittings


Compressor

Compressor

  • The compressor squeezes air into the tank


Pressure switch gauges

Pressure Switch & Gauges


Regulator

Regulator

  • Reduces Pressure “downstream”


Mechanical system

Tank

  • Accumulator, receiver

  • Size determines how much energy is available.

    • Keep this in mind when testing on the testbed


Flow control fitting

Flow Control Fitting

  • Restricts airflow in one direction

  • Controls speed.


Directional control valves

Directional Control Valves

  • Solenoid Valves, 4 or 5-Way Valves, Spool Valves


Cylinders

Cylinders

  • Where the action is

  • Double acting


Force available

Force Available

  • At 60 psi…

    • 5/16 bore

      • Extend: 4.6 lbs

      • Retract: 3.8 lbs

    • ¾ inch bore

      • Extend: 26 lbs

      • Retract: 24 lbs

    • 1.5 inch bore

      • Extend: 106 lbs

      • Retract 97 lbs


Hose and prestolock fittings

Hose and Prestolock Fittings


Mechanisms

Mechanisms


About parts available

About Parts Available

  • Sources:

    • Kit of Parts

    • Metal Choices

    • Material Requisition Form


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