Robot chassis

Types of robot chassis

A robot chassis is a frame that supports a mobile robot body. It provides stability and structural support to the robot. This is where all the internal components of the robot will be fixed. The robot chassis usually comes in different shapes and sizes and is made from various materials based on its requirements.

Robot chassis types vary based on design functions and functions. Here are some of them:

• Two wheel differential steering chassis: This kind of robot chassis comes with two driven wheels on the left and right. It also has a caster wheel mounted at the back to balance the robot chassis. The two wheels chassis works like a tank by moving wheels at different speeds. Caster wheels help prevent chassis wheel from getting stuck when turning. This makes the robot chassis to be more maneuverable with a small turning radius.
• Four wheel steering chassis: This kind of robot chassis has four wheels. All of the wheels can be steered to allow the robot chassis to move. This improves maneuverability especially in tight spaces. This chassis has a better stability control which is mostly used in larger robots.
• Spider robot chassis: Just like the name implies, this robot chassis is designed in the form of a spider. It is equipped with legs instead of wheels to move and can travel over rough terrains. The robot chassis usually comes with 6 or 8 legs. Each leg moves in a coordinated manner which allows the chassis to easily get over obstacles.
• Tank robot chassis: This chassis is designed in the form of a tank. It operates using two tracks that move around a common axle. Each track moves independently. Hence, the robot chassis can turn by varying the speed of each track. It is mostly used in robots that need to traverse rough terrains.
• Car robot chassis: This kind of robot chassis is designed in the form of a car. It uses two drive wheels powered by a dc motor. The speed of the wheels can be controlled to enable the robot chassis to move forward or backward. It also includes a passive wheel for steering that allows the robot chassis to turn. The car robot chassis can move on flat surfaces at a relatively high speed.
• Wheeled robot chassis: This consists of several wheels. When the wheels rotate, the robot chassis moves. The number of wheels can vary depending on the design function of the robot chassis. However, a typical wheeled robot chassis comes with four wheels. The design is simple and allows for easy construction of the robot chassis.

Function and features of robot chassis

The main functions of a robot chassis are to support the entire structure of a robot and allow it to move. As such, every robot chassis will have some basic features. These include wheels or legs for movement, a power source, and a frame.

The following features may be present in robot chassis for specific functions:

• Frame design: The frame design may differ depending on the type of robot. And it will have mounting points for all the robot's components. A robust and lightweight chassis enables robots to carry heavy payloads and move over rough terrain without sustaining damage.
• Type of wheels or legs: Robot chassis may be two, four, six, or wheeled. Some may use continuous track systems, while others may have legs. The kind of wheels or legs used will determine the mobility options and capabilities of the robot.
• Terrain capabilities: Some robot chassis are specially built to maneuver over rough, rugged terrain, such as forests or sand. They may have variable terrain mobility features like off-road wheels, tracks, or skid steering.
• Size and weight: Robot chassis come in various sizes, from mini to large. The size depends on the components, payloads, workspaces, and robot applications. A lightweight chassis is ideal for reducing energy consumption and maximizing efficiency.
• Power source: A robot chassis can be powered by batteries, solar energy, fuel cells, or electric motors. The power source will determine the runtime and autonomy of the robot.
• Tools and accessories: Some robot chassis come with tools for assembly and a variety of sensors and accessories. These accessories may include cameras, grippers, and additional sensors.

Scenarios of robot chassis

Robot chassis systems can be used in various applications, which is advantageous for people looking to buy robot parts in bulk.

• Robotics Research and Education

  The robot chassis is used in laboratories and academic institutions to help students and robot enthusiasts learn about mobile robot design, dynamics, and control. The availability of open-source projects makes it easy for people to grasp concepts related to programming, sensors, and actuators.

• Industrial Automation

  The robot chassis can be modified to help automate tasks in warehouses, factories, and seaports. These robots carry out repetitive tasks like material handling, picking, Sorting, and transporting goods. Companies also use chassis-based robots to perform inspections and routine maintenance in industrial settings.

• Delivery and Logistics

  Driving robot chassis systems are used to develop autonomous delivery robots that transport packages, food, and other items in urban and campus environments. Using robot chassis in logistics makes it possible for businesses to enhance last-mile delivery services and develop automated material-handling solutions.

• Security and Surveillance

  Robot chassis systems can be used to create mobile security robots that patrol restricted areas, monitor facilities, and conduct surveillance. Organizations can add sensors, cameras, and other detection devices to the chassis to detect unusual intrusions and prevent losses.

• Inspection and Exploration

  In some cases, robot chassis systems are used to create inspection robots that can reach hard-to-access areas. Professionals use these robots to inspect pipelines, power lines, and other industrial structures. Chassis-based robots can also be used to explore harsh environments such as outer space, deep oceans, and other unexplored terrains.

• Entertainment and Hobbies

  Robot chassis systems can also be used in personal applications. Hobbyists can use them to develop self-driving cars and other fun robots. There are robot competitions where people can show off their robots. Such competitions can create interest in robotics careers and motivate people to learn more about robotics technologies.

How to choose robot chassis

When purchasing a robot chassis in bulk, buyers should consider the materials, weight, size, and load capacity. The construction material of the robot chassis affects its durability and performance. For instance, metal chassis like aluminum offers excellent strength and support for heavy components. It is also resistant to wear and tear. On the other hand, some robot chassis are made from plastic or nylon, which are lightweight and rustproof. However, they are less sturdy and can’t support heavy loads.

Heavy robot assemblies need a strong chassis that can support the weight without bending or breaking. The weight of the chassis affects the movement speed and battery life. A heavier chassis requires more power to move around, while a lighter chassis will be more agile and use less energy. However, the weight of the chassis also depends on the size. Larger chassis weigh more, while smaller chassis are lighter.

The load capacity of the robot chassis depends on the construction material and size. This determines the amount of equipment and components the robot can carry. Buyers should also check if the chassis has wheels or tracks. Wheels are more suitable for moving on smooth surfaces, while tracks offer better mobility on rough terrain.

Q&A

Q1: What is a robot chassis?

A1: A robot chassis is the robot's supporting structure and the base that holds all its components. It is also what enables the robot to move around. This is because the chassis of a robot comes with wheels or legs to facilitate movement.

Q2: What are some common materials used to build robot chassis?

A2: The materials used to build a robot chassis depend on the type of robot being manufactured. Commonly, chassis are made with metal or alloys, such as aluminum, because they are strong, durable, and easy to machin. However, plastics and composite materials are also used because they are lightweight and allow for easier fabrication.

Q3: What are the key considerations when selecting a chassis for a robot?

A3: Key considerations include ensuring compatibility between the chassis and the robot's size and payload capacity, as well as the wheels and terrain type, which will determine the robot's mobility requirements.

Q4: Is it possible to customize a robot chassis?

A4: Yes, that is possible. Some robot chassis come with customization options that allow businesses to add features or components to tailor the robot to suit specific application requirements.