Mechanical System
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Mechanical System
description
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 - PowerPoint PPT Presentation
Transcript of Mechanical System
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• Main difference between pneumatics and
Hydraulics: Compressibility
F = PA
Tradeoffs?
Components
• Compressor• Pressure Switch• Pressure Gauge• Regulator• Tank• Flow Control • Directional Control Valves (solenoid valves)• Cylinders• Hose and Fittings
Compressor• The compressor squeezes air into the tank
Pressure Switch & Gauges
Regulator
• Reduces Pressure “downstream”
Tank
• Accumulator, receiver• Size determines how much energy is available.– Keep this in mind when testing on the testbed
Flow Control Fitting
• Restricts airflow in one direction• Controls speed.
Directional Control Valves
• Solenoid Valves, 4 or 5-Way Valves, Spool Valves
Cylinders
• Where the action is• Double acting
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
Mechanisms
About Parts Available
• Sources:– Kit of Parts– Metal Choices– Material Requisition Form
