Lecture Notes: Mechanical Devices and Types of Motion

Types of Movement in Design Technology

1. Linear Movement

• Definition: Movement in a straight line.
• Example: Train moving along a track.
• Visualization:
  • Draw a train with a straight arrow indicating forward movement.

2. Reciprocation

• Definition: Movement that goes forwards and backwards.
• Example: Piston in a car engine moving up and down.
• Visualization:
  • Draw pistons with arrows indicating upward and downward movement.

3. Rotary Movement

• Definition: Movement that rotates around a central point.
• Example: Wheel on a car.
• Visualization:
  • Draw a wheel with an arrow indicating rotational movement.

4. Oscillation

• Definition: Swinging movement back and forth.
• Example: Pendulum motion or office desk pendulums.
• Visualization:
  • Draw a pendulum with arrows indicating swinging motion.

Exam Tip

• Understanding the difference between reciprocation and oscillation:
  • Reciprocation: Straight line forward and backward.
  • Oscillation: Swinging movement.

Conclusion

• Identified and described four types of movement: linear, reciprocation, rotary, and oscillation.