Thanks to its high precision, fast speed and stable operation, 3-axis robots are increasingly widely used in production and assembly lines of electronic components, automobiles and motorbikes. Join Intech Group to learn about its overview and applications in production.

What is a 3-axis robot?

What is a 3-axis robot? This is an industrial automation device capable of moving in three linear directions: the X-axis, Y-axis and Z-axis, helping to perform repetitive operations with high precision. Also known as the XYZ robot, this type of robot is specially designed to serve in the production lines of electronic, mechanical, automobile and motorbike components.

Thanks to its precise combination, 3-axis robots help increase productivity in mass production, reduce errors, improve product quality and support businesses to optimize operating costs in the long term.

3-axis robot structure

A standard 3-axis robot system consists of four main parts:

• 03 linear actuators: Allow the robot to move in three spatial directions (X, Y, Z) to handle multi-dimensional tasks with high precision.
• 03 servo motors (Motor Servo Drive): Control the precise movement of each axis, ensuring stability and smoothness in operation.
• Central controller (Controller): Is the center for signal processing, programming robot operations and coordinating all operations according to the established production cycle.
• I/O signal port (10 ports): Allows the robot to connect to peripheral devices, receive and output control signals to perform automation operations.

The coordination between these components helps the robot operate flexibly, handling jobs that require high precision that are difficult for humans to perform manually.

Operating principle of 3-axis robot (XYZ Robot)

The operating principle of 3-axis robot is based on the close coordination between the central controller (Controller), servo motors and linear actuators. In which:

• The central controller (Robot Controller) acts as the "brain" of the system. For simple applications, robots can use PLC (Programmable Logic Controller) as the controller. However, in applications that require complexity and high precision, it is necessary to use a specialized Robot Controller to program and operate the robot more effectively.
• Engineers program tasks and motion paths into the controller's memory. When activated, the controller will transmit control signals to three servo motors (Motor Servo Drive).
• The servo motors will then control the linear actuators so that the robot moves synchronously along the X, Y and Z axes to the predetermined position.
• Finally, the I/O (Input/Output) signal port receives and transmits digital signals, which activate specific operations or stop the robot according to the programmed procedure.

This principle applies to most XYZ robot systems, even if there are small differences in device configuration.

Outstanding features of 3-axis robots

3-axis robots, also known as XYZ robots, possess many outstanding features that help improve production efficiency and automate production lines:

• Flexible three-dimensional movement: With a structure of three independent moving axes (X, Y, Z), robots are capable of operating in three-dimensional space, performing precise tasks in many different locations.
• Optimizing installation space: 3-axis robots can be integrated on work tables, conveyor belts or automatic machinery systems, helping to maximize production area.
• High load capacity, stable operation: With a sturdy design, robots can handle jobs that require large impact forces or move heavy components.
• High precision: A prominent strength, helping 3-axis robots ensure consistent quality in assembling and manufacturing electronic components, automobiles and motorbikes.

These features make 3-axis robots an ideal choice for businesses looking to increase productivity, reduce manufacturing errors, and optimize operating costs.

Components of a 3-axis robot (XYZ Robot)

A 3-axis robot, also known as an XYZ robot, is a type of industrial robot that operates on three basic planes of motion: the X-axis (horizontal), the Y-axis (vertical), and the Z-axis (elevation). Below are the main components that make up a 3-axis robot and the specific roles of each part:

1. Manipulator Arm

The manipulator arm is the main part that performs movements and operations in the production line. It includes many joints and mechanical links, which can be programmed to perform different tasks such as assembling, arranging, or transporting products. The joints can be rotary joints, sliding joints, or translational joints, helping the robot move flexibly in three-dimensional space.

2. End-Effector

The end-effector is a device mounted at the end of the robot arm, customized for a specific task. For example: Electronic component grippers, soldering irons or drill heads, cutting knives, glue sprayers, or packaging equipment.

The flexibility in replacing end-effectors allows 3-axis robots to be used in a variety of industries.

3. Actuators

The actuators are responsible for creating movement for the robot joints and arms. Three common types of actuators in industrial robots include:

• Electric actuators - Common in precision robots.
• Pneumatic actuators - Suitable for fast, light movements.
• Hydraulic actuators - Used for large loads.
• These actuators are often combined with mechanical systems to adjust and convert movements as desired.

4. Central Controller (Robot Controller)

The controller is the center that processes and manages all robot operations, helping to receive data from sensors, process signals and issue control commands to the actuators. Including microcontrollers, industrial PLCs and specialized control computers.

The more powerful the controller, the more complex, accurate and faster the robot can handle tasks.

5. Sensors

Sensors help robots interact with the working environment, providing feedback signals for the control system to make appropriate decisions. Some common types of sensors:

• Force - pressure sensors
• Magnetic field sensors
• Ultrasonic sensors
• Visual sensors (AI cameras)

Sensors contribute to improving the accuracy, safety and efficiency of robots during work.

Operating principle of 3-axis robot according to X, Y, Z axes

3-axis robot operates on the principle of independent linear motion on three axes X, Y, Z, helping to perform operations in three-dimensional space. Specifically:

X-axis - Horizontal movement (Left ↔ Right)

X-axis allows the robot to move horizontally, from left to right or vice versa. This is a basic movement, often used to expand the reach within the workspace.

Y-axis - Depth movement (Forward ↔ Backward)

Y-axis helps the robot move in depth, moving forward or backward. This axis plays an important role when the robot needs to access workpieces or parts located deep in the working area.

Z-axis - Vertical movement (Up ↕ Down)

Z-axis allows the robot to lift or lower vertically. This allows the robot to handle tasks at different heights, such as picking up products from trays or installing components into molds.

When the three axes X, Y, Z operate simultaneously, the robot can move flexibly in three-dimensional space, accurately position and perform a variety of operations such as arranging components, assembling products, spraying glue, welding, drilling, cutting, packaging and sorting products.

This is the operating platform of the 3-axis Descartes robot, a popular automation solution in modern manufacturing.

Applications of 3-axis robots in industrial production

3-axis robots are an ideal choice in many manufacturing processes thanks to their ability to move flexibly along the three axes X, Y, Z.

1. Material handling

3-axis robots are very effective in transporting materials between production stages. They can perform tasks such as loading/unloading raw materials, packaging large quantities of products, working in high temperature environments, etc. With the ability to accurately position, robots can pick up parts, assemble them and arrange them in the right position on the production line.

2. Automatic welding

Thanks to their high repeatability, 3-axis robots are often used in welding applications such as spot welding, arc welding. They are especially popular in the production of automobiles and industrial equipment, where high precision and speed are required.

3. Painting and coating

Robots can perform coatings with high uniformity. From powder coating, metal plating to anti-corrosion coatings, all can be performed automatically by 3-axis robots, helping to increase quality and save materials.

4. Palletizing and unloading

3-axis robots are widely used in logistics operations, especially loading/unloading goods onto and off pallets. With high precision and flexible programming capabilities, robots help optimize storage space and increase productivity.

5. Inspection and testing

Integrated with sensor systems and measuring devices, 3-axis robots can perform quality inspection tasks such as: optical inspection, force/torque measurement, leak testing, etc. to ensure products meet technical standards.

>> Reference: Automatic Palletizing Robot System

Robot lines similar to 3-axis robots in industry

Besides 3-axis robots, there are many other robot lines used in the manufacturing and assembly industry. Each type has its own advantages and is selected depending on the specific work.

1. 6-axis robots

6-axis robots have six degrees of freedom (X, Y, Z, A, B, C), allowing complex movements in 3D space and multi-dimensional rotation. They are suitable for tasks that require high flexibility such as assembling electronic components, machining parts with complex shapes or operating in limited environments.

2. SCARA Robot

Robot SCARA (Selective Compliance Assembly Robot Arm) has 4 axes of motion (X, Y, Z and R) and is characterized by its rigidity in the horizontal plane. SCARA is often used in high-speed assembly work, handling small objects, or sorting products in industries such as electronics, component manufacturing.

3. Delta Robot

Delta Robot uses three parallel arms to manipulate in three-dimensional space (X, Y, Z). With an optimized design for speed and accuracy, Delta is suitable for light tasks such as picking/placing components, packaging or sorting products in the pharmaceutical, food, and electronics industries.

The above is an overview of 3-axis robots and their prominent applications in production. If your business is looking for a comprehensive automation solution from conveyor systems, conveyor belts to smart factory solutions, please contact Intech Group immediately for quick and effective advice and support.