Mechanisms in Design and Technology

Mechanisms in Design and Technology

Mechanisms are used to create movement, change shape, or perform specific functions in products. They can be classified into three main categories:

Types of Mechanisms

1. Linkages: Connect two or more components to create movement or rotation.
   • Examples: hinges, pivots, and lever systems
2. Cams and Followers: Convert rotary motion into linear motion.
   • Examples: door handles, gear systems, and printing press mechanisms
3. Gears and Transmissions: Change speed, direction, or torque of rotational motion.
   • Examples: gearboxes, bicycle gears, and clockwork mechanisms

Key Components of Mechanisms

• Axles: Rotating shafts that support rotating components.
• Bearings: Reduce friction and wear between moving parts.
• Fasteners: Hold components together, such as screws, nuts, and bolts.
• Springs: Store energy and provide resistance to motion.

Mechanism Design Considerations

• Kinematics: Study of the motion of objects without considering forces.
• Dynamics: Study of the motion of objects considering forces and energy.
• Material selection: Choose materials that can withstand stresses, loads, and environmental conditions.
• Manufacturing processes: Consider the feasibility and cost of manufacturing the mechanism.

Applications of Mechanisms

• Robotics: Use mechanisms to create movement and perform tasks.
• Automotive systems: Use mechanisms to transmit power, change direction, and provide movement.
• Medical devices: Use mechanisms to create movement, change shape, or perform specific functions.
• Consumer products: Use mechanisms to create movement, change shape, or perform specific functions in everyday products.