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The maintenance method of the dynamic and static pressure spindle of the external cylindrical grinder is crucial for ensuring the accuracy of the machine tool and extending the service life of the spindle. Here are some key maintenance methods:
1、 Inspection and maintenance of fuel supply system
Oil supply pressure and oil quality inspection:
Before using the spindle, it should be ensured that the oil supply system is operating normally and the total oil supply pressure reaches the specified value (such as 2MPa).
Regularly check the quality and oil level of the spindle oil to ensure that it is clean and free of impurities, and filter or replace the spindle oil every six months as needed. If the spindle oil is found to be severely deteriorated or has many deposits, it should be replaced immediately.
It is strictly prohibited to use spindle oil that does not comply with regulations, and to avoid mixing liquids or impurities such as water, cutting fluid, and grinding fluid into the spindle oil.
Cleaning of oil supply pipelines and joints:
When connecting oil pipes and joints in the oil supply system, spindle oil should be used to clean the pipes, joints, and joint installation holes to ensure that the oil supply pipes are clean and unobstructed.
Regularly check whether the return oil pipeline is unobstructed. If oil leakage is found on the spindle end face, the spindle should be stopped immediately and the return oil system should be checked.
2、 Daily inspection of spindle
Inspection of spindle rotation status:
Before starting, gently rotate the grinding wheel shaft by hand to check if the spindle can rotate easily without any obstruction.
Regularly check whether the rotation direction and speed of the spindle meet the requirements, and strictly prohibit overspeed operation and incorrect spindle rotation direction.
Inspection of foreign objects on the spindle:
Any slight error in precision parts can affect the machining process, so it is necessary to regularly check the cleanliness of the dynamic and static pressure spindles to ensure that no foreign objects enter.
3、 Lubrication and cooling of the spindle
Inspection and replacement of lubricating oil:
Regularly check the lubricating oil of the spindle to ensure that the lubricating oil is sufficient and of good quality. Lubricate according to the machine operation instructions to reduce the friction at the spindle connection and extend the service life of the spindle.
The selection of lubricating oil should be based on the characteristics and model of the machine tool, and the supplier should be consulted to ensure the use of the correct oil.
Inspection of cooling system:
Check if the cooling system is functioning properly to ensure that the spindle is adequately cooled during the machining process and to avoid damage caused by overheating.
4、 Electrical connection and parameter setting of spindle
Inspection of electrical connections:
Regularly check the electrical connections of the dynamic and static pressure spindles to ensure their stability. If any electrical connection problems are found, they should be replaced in a timely manner.
Reasonable setting of processing parameters:
Reasonable machining parameters should be set during the use of the spindle to avoid heavy cutting, high speed, and other unsuitable working conditions, in order to protect the spindle from damage.
5、 Other precautions
Do not strike or collide:
It is strictly prohibited to strike the spindle components to avoid spindle collision and prevent spindle deformation or damage.
Regular inspection and maintenance:
Regularly conduct a comprehensive inspection of the spindle, including bearing wear, temperature, vibration, and fastening of connecting bolts, to ensure that the spindle is in good working condition.
Professional training and operation:
Operators should receive professional training to understand the structure, performance, and maintenance methods of the spindle, ensuring correct and safe operation and maintenance of the spindle.
In summary, the maintenance method of the dynamic and static pressure spindle of the external cylindrical grinder involves multiple aspects such as inspection and maintenance of the oil supply system, daily inspection of the spindle, lubrication and cooling of the spindle, electrical connection and parameter setting of the spindle, and other precautions. Through regular maintenance and upkeep, the accuracy and stability of the spindle can be ensured, extending its service life.
