What are the disadvantages and advantages of the application of wire grain in measurement and detection

advantage

High precision: As a high precision benchmark and standard, the line grain scale determines its length by the vertical distance between any two lines, and has the characteristics of equal scale, which can achieve high precision length measurement and positioning.

Multi-purpose: The line rule can be used to check the corridor points, control points and coordinate dot distance, and can also be used as a standard rule to verify the level rule. In addition, it is also widely used for measuring and measuring linear distance and marking and other functions, showing its wide applicability.

Good stability: In the verification process, as long as the ambient temperature is stable and accurate, the measurement results of the line ruler usually have high reliability.

Comply with the Abbe principle: When the parallel vertical or parallel transverse measurement and detection mode is used, the line grain rule conforms to the Abbe principle, which helps to reduce the measurement error.

malpractice

Error factor:

Temperature difference: The temperature difference between the standard ruler and the measured ruler will cause the length to change, resulting in an error. This is a key problem that should be paid attention to in the measurement and detection of wire grain scale.

Deformation effect: The wire grain may be deformed during inspection and transportation, resulting in errors. Although the error is quadratic and has little effect on the measurement results, it still needs to be paid attention to in the verification work.

Engraving accuracy: Due to process limitations, the engraving of the line ruler may not be an ideal regular straight line, but is of varying widths, slightly curved, and irregular edges. This will lead to the uncertainty of line spacing, which will affect the measurement accuracy.

Limits of application:

Limitations of the series longitudinal drive: although the series longitudinal drive can continuously compare any interval of the electromagnetic instrument to check two feet, but because it does not conform to the Abbe principle, the measurement error is large, so it is only suitable for the verification of medium and low accuracy linear scale.

Parallel transverse movement limitations: Although the instrument structure size is small, the parallel transverse movement can only compare the fixed length of two feet, and can not compare the continuous interval of two feet, limiting its application range.

In summary, the wire grain has the advantages of high precision, multi-purpose and good stability in measurement and detection, but it also has drawbacks such as temperature difference, deformation influence, cutting accuracy and application range limitation. In practical applications, these factors need to be considered comprehensively to ensure the accuracy and reliability of measurement results.