Failure Analysis of Precision Machine Tool Bearing Wear

Failure Analysis of Precision Machine Tool Bearings

Introduction

Precision machine tool bearings are important components used in modern machine tools and equipment, especially in high-precision machine tools. The motion accuracy and speed performance of machine tools are directly related to the quality of bearings. In addition, in the process of bearing use, because the operating conditions are relatively harsh, the load is relatively large, and the precision of assembly is difficult, the bearing is highly prone to failure and it is necessary to carry out failure analysis to select a suitable bearing and reduce the probability of bearing failure in the process of bearing use.

Analysis of Failure Mechanism of Precision Machine Tool Bearings

At present, the main failure mechanism of precision machine tool bearings includes overload, vibration, shock and improper assembly, which are mainly caused by raw material defects and wrong installation direction of bearings.

(1) Overload. Due to the complexity of the internal structure of the bearing and the imbalance of the load in use, some parts of the bearing are subjected to an excessive load, causing the bearing to fail quickly.

(2) Vibration caused by layout and unfavorable installation positions. As the bearing position can affect the bearing performance, any unwise installation will cause the bearing vibration, resulting in serious damage to the bearing.

(3) Shock damage. During the installation process, if the handling is careless, the bearing will be hit by foreign objects and vibration and shock damage will occur.

(4) Improper assembly. Improper assembly and selection will cause abnormal noise and vibration, resulting in bearing damage and bearing failure.

The above is the main failure mechanism of precision machine tool bearings.

Analysis of Causes of Failure of Precision Machine Tool Bearings

The main cause of bearing failure include raw material defects, improper installation and bearing components.

(1) Raw material defects. If the material properties of the bearing are not up to standard, the characteristics of the bearing will not meet the requirements of use, resulting in bearing failure.

(2) Improper installation. During the installation process, if the installation procedures and series are not correct, the bearing will fail due to improper installation.

(3) Bearing components. If the bearing components are not up to standard, the bearing cannot function properly and is more likely to fail.

Precautions for Use of Precision Machine Tool Bearings

The following are some tips to avoid bearing failure in precision machine tools:

(1) Select the appropriate bearing according to the requirements: The type, position and environmental requirements of the bearing should be considered when purchasing.

(2) Correct assembly procedure: The bearing should be clean and installed in the correct direction according to the instructions.

(3) Correct tightening of mounting bolts: Bolts should not be too tight or too loose.

(4) Inspection and maintenance before use: Inspect the bearing for any signs of damage and wear. Replace if necessary.

Conclusion

Precision machine tool bearings are key components of the machine tool, and improper selection and use can lead to bearing failure. Therefore, it is important to select the right bearing, pay attention to correct installation and use, pay attention to regular inspection and maintenance to ensure the normal use of bearings. By understanding and understanding the above-mentioned failure analysis principles of precision machine tool bearings, potential problems can be avoided and equipment downtime can be reduced.

Analysis of Bearing Wear Loss for Precision Machine Tool

The precision machine tool is a major equipment for the production and processing of various products. Its main function is to ensure the machining accuracy of workpieces. Bearing is an important part of the precision machine tool. Poor maintenance or bearing damage in the production process will directly affect the machining accuracy, work efficiency and production cost. Therefore, the bearing wear of the precision machine tool needs to be closely monitored and detected in time to ensure the normal operation of the whole machine.

In the process of the machine tool, the wear loss of the bearing is mainly caused by the lubricating oil not meeting the requirements and the poor sealing, resulting in the bearing inner race, outer race, rolling element being subject to corrosion and rust, flaking and seizure, so that the bearing is less able to bear load.

In order to avoid bearing wear, operators need to pay attention to machine lubrication. Reasonable lubrication can reduce emissions and reduce the wear of precision machine tool bearings. At the same time, the bearings of the machine should be inspected regularly, and the worn bearings should be replaced timely. In addition, the cleanness of the bearing environment should also be optimized, so as to avoid dust and sundries entering the bearing and corroding or damaging the bearing.

Therefore, the operator should pay attention to the daily maintenance and lubrication of the precision machine tool. Good maintenance and lubrication can reduce the wear of the bearing and ensure the machining accuracy of the machine tool.