Actuators ( Oil Hydraulic & Pneumatics )
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Actuators are devices used to produce action or motion.
Actuators ( Oil Hydraulic & Pneumatics )
- 1. GANDHINAGAR INSTITUTE OF TECHONOLOGY(012) SUBJECT : Oil Hydraulics & Pneumatics (2171912) Active Learning Assignment on the topic of “Actuators” BE Mechanical Sem:7 A3 Prepared By:
- 2. WHAT IS AN ACTUATOR? •Actuators are devices used to produce action or motion. • Input(mainly electrical signal , air, fluids) • Electrical signal can be low power or high power. •Actuators output can be position or rate i.e. linear displacement or velocity. • Actuation can be from few microns to few meters
- 3. FLOW DIAGRAM OF AN ACTUATOR
- 4. TYPES OF ACTUATORS Hydraulic Actuators Pneumatic actuators Mechanical Actuators Electrical Actuators Linear actuator: solenoid, Hydraulic/Pneumatic. Rotary actuator: motor, Hydraulic/Pneumatic.
- 5. HYDRAULIC ACTUATOR • Hydraulic systems are used to control & transmit power. • A pump driven by prime mover (electric motor) creates flow of fluid TYPES OF HYDRAULIC ACTUATORS: Linear actuator (hydraulic cylinder)- Provides motion in straight line. Linear displacement depends on stroke length. Usually referred to as cylinders, rams (single acting cylinders) or jacks. •Rotary actuators (Hydraulic motors)- Produces continuous rotational motion. Pump shaft is rotated to generate flow. A motor shaft is caused to rotate by fluid being forced into the driving chambers.
- 6. PNEUMATIC ACTUATOR It convert energy formed by compressed air at high pressure into ether linear or rotary motion. Quickly respond in operation. CONSTRUCTIONAL FEATURES OF CYLINDER
- 7. ROTARTY HYDRAULIC ACTUATORS VANE ROTARY ACTUATORS: • Limited angle in both directions • Maximum angle always smaller than 360 • The same torque in both directions. PISTON ROTARY ACTUATORS: •With rack and gear coupling. •Here maximum angle may be larger than 360°
- 8. MECHANICAL ACTUATOR • Mechanical linear actuators typically operate by conversion of rotary motion into linear motion. TYPES OF MECHANICS: Screw Wheel and axle Cam
- 9. OTHER TYPES OF ACTUATORS Heaters - used with temperature sensors And temperature controller to control the temperature in automated moulding Equipment and in soldering operation. Lights - Lights are used on almost all machines to indicate the state and provide feedback to the operator. LED LCD’s Gas plasma display CRT machine Sirens/Horns - Sirens or horns can be useful for unattended or dangerous machines to make conditions well known.
- 10. Thank You