The inspection of machine parts is an important part of the mechanical maintenance process. Through a series of inspections, machine parts can determine their technical status and the technological measures to be taken, and then, through inspections, the technical quality after repair can be determined. ZHONGKEN shares some measures to ensure the inspection quality of machine parts below.

Most machine parts and mating parts have prescribed technical standards. This is the main basis for inspection work. If there is no reliable basis for the need to modify the standards, these standards must be strictly followed, and the standards must not be lowered and the unqualified parts are put into use.

In addition to selecting the inspection equipment according to the nature and scope of the inspection items, special attention should be paid to the accuracy requirements. For example, when measuring length, when the accuracy is required to be in the range of 1mm, a steel ruler can be used.

when the accuracy is required to be in the range of 0.1mm, a vernier caliper is generally used; when the accuracy is required to be 0.01mm, a micrometer or a hundred sub-meter; when the accuracy of 0.001mm is required, a comparator is required. If the accuracy of the inspection equipment is lower than the accuracy required by the tested object, it cannot meet the quality inspection requirements at all, and care must be taken to prevent it.

The level of inspection operation technology directly affects the inspection accuracy. Whether it is self-inspection by maintenance personnel or inspection by full-time inspectors, operators are required to be proficient in the inspection equipment used and to clarify the inspection requirements of the inspection objects. For this reason, attention must be paid to the improvement of inspection technology, special training must be given to the use of special and important inspection equipment, and various inspectors must be relatively stable.

Any inspection result will inevitably have errors, and its impact is multifaceted. For this reason, the following aspects should be prevented and eliminated:

(1) The inspection equipment has its own accuracy grade, and it should be calibrated regularly, and attention should be paid to maintenance and storage to maintain its due accuracy;

　　

(2) Correct the error caused by temperature. Among the environmental factors that affect inspection accuracy, the influence of temperature is the largest. For example, the influence of linear expansion in length inspection, the sexual change caused by temperature change in electronic devices, etc., should be corrected as necessary in more precise measurement;

(3) The errors caused by improper operation or inaccurate readings are mostly accidental errors, so the average value of multiple measurements can be taken, which can greatly reduce the degree of error.

(4) Establish sound and reasonable inspection rules and regulations. A reasonable inspection system is a guarantee for the organization of the inspection work.

As an expert in machine parts research for many years, we can give you some professional advice to a certain extent. If you want to know more about machine parts after reading the above, you can get a comprehensive solution by contacting us.

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