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How is the high-precision design of a single-axis robot realized?

Update:12 Aug 2022

When it comes to the name of the single-axis robot, many friends may say that it is very unfamiliar. In fact, the name of the single-axis robot is only a kind of sliding table. It's just that different people in the industry, or people from different regions, have different names.

We all know that the single-axis robot is characterized by high precision, and high precision is the characteristic given to the single-axis robot itself by the screw in the physical internal structure of the single-axis robot. Is it possible to achieve high precision just by installing the screw into the single-axis robot? Yes, because of the installation shape and structure of the single-axis robot itself, the screw can be placed in this position to reflect its role.
So what efforts have been made in the design of the aluminum profile shape and structure of the single-axis robot? This is the introduction to the principle of single-axis robot to achieve high precision today.

1. Sports benchmark

High-precision motion is usually determined by the motion reference data of mechanical motion. In a single-axis robot with stable performance, its motion reference can be composed of guide rail elements. When sensors are used to measure and compensate for motion errors, single-axis robots The mechanical system of a single-axis robot, such as a steel ruler, will become the data of the measurement object, so the manufacturer will use the high degree of shape accuracy as the benchmark of the single-axis robot in order to improve its motion accuracy.

2. Reasonable motion mechanism design

With a high-precision motion datum, it is also necessary to have a reasonable motion mechanism design, so that the motion datum can be perfectly matched to achieve high precision. Therefore, the single-axis robot will consider the influence of internal and external forces, as well as the influence of elastic-plastic deformation and friction of the parts, and reasonably design the component configuration and structure of the motion system to ensure that there will be no shape errors.

3. Correct detection of motion sensor system

Even with the correct motion datum and mechanism, a sensor system that can correctly detect motion is necessary to ensure the motion accuracy of a single-axis robot. Therefore, the single-axis robot will feed back the displacement signal F of the moving body to the control system to form a closed-loop control to measure and correct the positioning target accuracy of the moving body.

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