Mechanical Roadmap

Week 1: Gears, Motors, and Mechanisms

Objective: Time to dig into the nuts and bolts of robot movement! Learn about gears, motors, and actuators—everything that makes your robot move, twist, and turn. By the end, you’ll know exactly how to get your bot rolling without it falling flat on its face.

Resources

1. Gears — The Wheel Deal:

   • Types of Gears Explained
   • Focus: Understand the different types of gears (spur, bevel, worm), their applications, and how they influence speed and torque.

2. Motors — (So Your Bot Doesn’t Just Sit There):

   • Types of Motors Used in Robotics
   • Study: Learn about DC motors, stepper motors, and servos. Each has a unique personality—pick the right one for your needs.

3. Choosing the Right Motor:

   • Motor Selection Guide
   • Key Points: Dive into torque, RPM, and power calculations. Match the motor to your bot's requirements.

4. Actuators:

   • Robot Actuators Explained
   • Focus: Understand different actuators: linear, rotary, and pneumatic.

5. Drive Mechanisms:

   • All About Robot Steering
   • Recommended Reading: Learn about skid steering, Ackermann steering, differential drive, and holonomic drive.

6. Motor Drivers:

   • Types of Motor Drivers
   • Focus: Explore the L298N, H-Bridge, and other drivers.

7. CAD Design — Building Bots in the Digital World:

   • Focus: Start learning Fusion 360 or SolidWorks to visualise and build robot parts.

Assignments

• CAD Challenge: Design a simple robotic arm joint in Fusion 360.
• Assembly: Assemble a basic robotic gripper in your CAD software.

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Week 2: Structural Design and Material Selection

Objective: Learn how to design strong and lightweight structures for robotic applications and understand the trade-offs between different materials.

Resources

1. Material Selection in Robotics:

   • Engineers Edge: Materials Guide
   • Topics: Metals vs. Polymers vs. Composites. Choosing between aluminum, carbon fiber, and plastics.

2. Frame and Chassis Design:

   • Robot Chassis Design Basics
   • Structural Design: Load distribution and stability for ground robots and drones.

3. Assembly Techniques:

   • Fasteners: Screws, Nuts, Rivets, and Adhesives.
   • Joints: Welded vs. Bolted Joints.

Assignments

• Chassis Design: Design and simulate a basic robot chassis in Fusion 360.
• Material Analysis: Compare weight and strength of different materials for your chassis.

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Week 3: Kinematics and Mechanisms

Objective: Understand motion planning, kinematics, and mechanical linkages for robotics.

Resources

1. Kinematic Chains and Linkages:

   • Four-Bar and Slider-Crank Analysis
   • Robotic Arm Degrees of Freedom (DOF)

2. Gears and Gear Trains:

   • Spur, Bevel, and Worm gears.
   • Gear ratios and torque transmission

3. Drive Systems:

   • Differential Drive and Ackermann Steering

Assignments

• Linkage Simulation: Simulate a 4-bar linkage in Fusion 360.
• Gear Train: Create a gear train assembly and analyze the torque output.

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Week 4: Actuators, Motors, and Power Transmission

Objective: Learn about different actuators and how robots generate and transmit motion.

Resources

1. Types of Motors in Robotics:

   • DC Motors, Stepper Motors, and Servo Motors.
   • BLDC Motors for high-performance applications.

2. Motor Drivers and Controllers:

   • PWM Control for Speed and Position.
   • L298N, TB6612FNG motor drivers.

3. Power Transmission Systems:

   • Belt Drives vs. Chain Drives.
   • Lead Screws and Linear Actuators.

Assignments

• Motorized Joint: Design a motorized robotic arm joint in CAD.
• Gripper Control: Implement a servo-controlled robotic gripper design.