Grating ruler is a kind of testing equipment for precision measurement, which can achieve very high measurement accuracy and stability, and is widely used in machining, electronic manufacturing, medical equipment and other fields. This article will introduce the principle, accuracy and industry application of the grating ruler to cover the reader's comprehensive understanding of the grating ruler.

The principle of grating ruler is to use the grating measurement principle to convert grating fringes into electrical signals, and then realize the measurement of physical quantities such as position, speed and acceleration. In grating ruler, grating ruler and reading head are the main components. Among them, the grating ruler is called the master ruler, which is composed of the ruler body, the grating line on the grating, the reference point, etc. The reading head is called a sub-ruler, which is composed of a grating line photodetector, a photoelectric conversion circuit, an electrical signal processing circuit, etc.

The precision of grating ruler mainly depends on the number of grating lines and the width of grating fringes, as well as the equal order error of grating ruler. The line number of modern grating ruler is up to millions of levels, the width of the grating fringe is only a few microns, and the accuracy of the grating ruler is very high, up to a few nanometers. The grating ruler also has very good repeatability and stability, and can maintain stable measurement accuracy even in more demanding environments.

Grating ruler is widely used in machining field. For example, in CNC machine tools, grating ruler can achieve accurate measurement of power, speed and other parameters to achieve high-quality and efficient processing production. At the same time, in the field of electronic manufacturing, grating ruler is also widely used in the measurement of precision equipment. For example, the grating ruler can be used in the measurement of modern medical instruments to improve the accuracy and stability of the instrument. In addition, open grating ruler and closed grating ruler are also two important types of grating ruler. Open grating ruler is suitable for precise measurement of displacement signal in clean environment, while closed grating ruler is suitable for precise measurement in harsh environment.

In short, as a high-precision and high-stability measuring equipment, grating ruler is gradually widely used in various industries. With the development of industry, the requirements for accurate detection and quality control are getting higher and higher, and the grating ruler will undoubtedly continue to play an important role. For beginners, if you are interested in the principle and application of the grating ruler, you may wish to have more in-depth understanding, master more practical skills, and better apply to practical work.