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Achieving high precision with six-axis industrial robot technology

2023/12/29 By Topstar

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In modern manufacturing, precision is the foundation of excellence. This blog post explores how a six-axis industrial robot enables unprecedented levels of precision across different industries and the impact this is having. Manufacturers, engineers, and researchers can gain more detailed insights by delving into these robotic systems’ complex capabilities and applications. This makes it easier to operate them.

Understand the mechanical structure of a six-axis industrial robot

Six-axis industrial robots have a unique mechanical design with six rotating joints, giving them six degrees of freedom. Joints are usually numbered 1 to 6, starting at the base joint and working up to the wrist joint. Each joint has a different range of motion, and this joint structure enables the robot to achieve complex movements in three-dimensional space. These robotic arm parts provide the necessary connections between joints, allowing the robot to reach different positions and directions, and their protection levels are IP40/IP67 optional.

The end effector is located at the end of the robot arm and is a tool or device used to perform specific tasks. Depending on the application, end effectors can include clamps, welding guns, or other means. Its design and connection methods affect the overall functionality of the robot. Their mechanical structure determines the robot’s axis configuration. Standard configurations include anthropomorphic or cylindrical, while common materials for structural components include aluminum and steel, and lightweight materials can enhance flexibility.

Cross-industry application of six-axis industrial robots

They have a wide range of cross-industry applications, and in the aerospace sector, six-axis robots excel at tasks such as assembly, welding, and precision machining of complex parts. At the base of the automotive assembly line, perform tasks such as welding, painting, and assembling components. Their ability to adapt to different tasks increases productivity and quality. Six-axis robots are used for injection molding, material handling, and assembly in the plastics and rubber industry. Their agility and speed increase production line efficiency. Industries in metal fabrication benefit from them performing tasks such as welding, cutting, and polishing. Their precision and ability to handle heavy loads contribute to efficient metalworking processes.

The role of advanced sensors in six-axis industrial robots

Advanced sensors enable them to perform precision, adaptability, and safety tasks. These sensors provide real-time data, allowing the robot to respond to environmental changes dynamically. Encoders and resolver sensors accurately measure the position and orientation of robot joints and end effectors. Integrating force/torque sensors into a robot’s end effector can provide feedback on the forces and torques exerted during object interactions. This tactile feedback enables robots to perform tasks that require delicate touch, such as assembly or handling fragile items. In addition, visual, proximity, and thermal sensors allow the robot to perceive and interpret the surrounding environment and detect whether objects are near the robot. Helps avoid collisions, monitors the temperature of robot components, prevents overheating, and ensures optimal operating conditions.

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Programming of a six-axis industrial robot

Six-axis robot programming requires a rigorous approach to ensure accurate and efficient task execution. They typically program the interface using a specific or vendor-specific programming language. Generating precise trajectories for robot end effectors requires careful path planning. This includes defining the required path, velocity, and acceleration profiles to ensure smooth and accurate movement. Programmers can simulate and verify robot motion before implementation using offline programming software. This allows the program to be fine-tuned to achieve the desired accuracy without physical trial and error.

A holistic approach to efficiency

Start by analyzing the task to identify optimization opportunities. Simplifying and refining task sequences can significantly reduce cycle times and improve efficiency. Operators use programming languages and technologies to enhance precision, control, and versatility. Implementing continuous and smooth motion trajectories minimizes acceleration and deceleration times. Energy-saving components can also be used, utilizing regenerative braking systems and incorporating sleep modes during idle periods to optimize energy consumption and reduce operating costs. In addition, we need to calibrate the robot to ensure accurate positioning and movement regularly. System calibration minimizes errors and discrepancies, maintaining high accuracy in mission execution.

Final

In this article, we describe how six-axis industrial robotics enables high precision in industrial environments, allowing our industrial manufacturers to understand the capabilities these robotic systems bring to us. Using these robots can make our production process more efficient and reduce errors.

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