A detailed introduction to optical wire rule

First, the principle of optical wire rule

The optical linear scale is measured by the moire fringe formation principle and photoelectric conversion technology. Moire fringe is a light and dark stripe formed when two grating scales (ruler grating and indicator grating) overlap at a certain Angle under the irradiation of a light source. These stripes are periodic, and their width and spacing depend on the line spacing and Angle of the grating ruler.

When the ruler grating and the indicator grating move relative to each other, the Moire fringe moves with them. The photosensor converts the change in light intensity into an electrical signal by detecting the movement of these stripes. After amplification and shaping, these electrical signals are converted into sine waves or square waves, which are displayed and recorded by a counter. In this way, the optical line ruler can achieve an accurate measurement of the length of the object.

Second, the type of optical wire rule

Optical lineation scale can be divided into many types according to different classification standards. Here are some common categories and their corresponding types:

By material:

Glass wire rule: Using optical glass as the base, with high light transmittance and high stability.

Metal wire rule: made of nickel steel, stainless steel and other metal materials, with high strength and corrosion resistance.

Classification by accuracy:

First-class standard line gauge: With the highest accuracy, suitable for high-precision measurement and calibration tasks.

Second class standard line gauge: slightly less accurate, but still able to meet the needs of most precision measurements.

Third class standard line rule: the accuracy is relatively low, suitable for general measurement tasks.

Classification by structure:

Fixed wire scale: directly mounted on the measuring device, suitable for measurement in a fixed position.

Mobile wire scale: can be moved with the measuring object, suitable for dynamic measurement tasks.

Third, the application of optical wire rule

Optical wire gauge has been widely used in many fields for its high accuracy and stability:

Machinery Manufacturing:

In the field of mechanical manufacturing, optical wire gauge is used for dimensional measurement and quality control of various parts. It provides accurate measurement data to ensure the manufacturing accuracy and consistency of parts.

Optical instruments:

In the process of optical instrument manufacturing, optical wire scale is used to measure the size and position of optical components such as lenses and mirrors. This is essential to ensure the imaging quality and performance of optical instruments.

Electronic technology:

In the field of electronic science and technology, optical wire ruler is used to measure the size and position of small objects such as circuit boards and components. Its high precision and high reliability make it widely used in the field of electronic science and technology.

Surveying and mapping science:

In surveying and mapping science, optical lineation scale is used for measuring length, precision marking and other tasks. It is one of the indispensable tools in surveying and mapping science.

4. Maintenance and calibration of optical wire rule

In order to ensure the long-term stable operation and measurement accuracy of the optical wire gauge, it is necessary to carry out regular maintenance and maintenance. Here are some common maintenance and calibration methods:

Cleaning and maintenance:

Clean the surface of optical wire rule and grating rule regularly to remove dust, oil and other impurities. Use a soft cloth and special cleaning agent to clean, avoid hard objects or corrosive solutions.

Anti-rust treatment:

For metal wire rule, it is necessary to carry out anti-rust treatment regularly. Apply with special anti-rust oil or anti-rust agent to ensure that the metal surface is not corroded.

Check the grating ruler:

Check regularly whether the lines of the grating ruler are clear and complete, and whether there is damage or falling off. If any abnormal situation is found, it should be replaced or repaired in time.

Calibration measurement:

Calibrate the optical wire rule regularly to ensure that the measurement accuracy meets the requirements. Calibration can be performed using a high-precision measuring instrument such as a laser interferometer or photoelectric light-wave ratio. During calibration, it is necessary to keep the measurement environment stable to avoid the influence of factors such as temperature and humidity on the measurement results.

Deposit and keep:

Store the optical wire gauge in a dry, ventilated environment free of corrosive gases. Avoid prolonged exposure to direct sunlight or high temperature environments to avoid damage to the grating ruler and measurement accuracy.

Fifth, the development trend of optical wire scale

With the continuous progress of industry and technology, optical wire scale is also developing. The following are some trends in the development of optical lineation scales:

High precision:

With the increasing demand for precision manufacturing and precision measurement, the precision of optical wire scale will continue to improve. By improving the manufacturing process and measuring algorithm of grating ruler, higher measuring accuracy and stability can be achieved.

Intelligent:

The optical linear scale is combined with intelligent equipment such as computer and sensor to realize real-time data acquisition, processing and analysis. Through intelligent algorithms and machine learning techniques, the efficiency and accuracy of measurements can be improved.

Multi-functional:

In the future, optical lineation scales will not only be limited to length measurement, but also have more functions, such as Angle measurement and surface roughness measurement. This will make the optical wire scale used in more fields.

Miniaturization:

With the development of miniaturization and integration technology, the volume and weight of optical wire scale will be continuously reduced. This will make the optical line ruler more convenient to carry and use, and suitable for measurement tasks in more scenarios.

Vi. Conclusion

As a precision measuring tool, optical wire gauge plays an important role in modern industry and science and technology. By improving the manufacturing process and measuring algorithm, the precision and stability of the optical wire scale will be further improved. At the same time, with the development of intelligent, multi-functional and miniaturized technology, optical wire scale will be applied in more fields, providing more accurate and reliable measurement support for people's production and scientific research activities.

In the future development, we need to continue to pay attention to the technological innovation and application expansion of optical wire gauge, strengthen the attention to its maintenance and calibration work, and ensure its measurement accuracy and reliability in various fields. At the same time, we also need to strengthen exchanges and cooperation with international advanced technologies to promote the continuous progress and development of optical wire gauge technology.