The grinding machine spindle is mainly used for supporting gears, pulleys, and other gears to transmit motion and torque. The motion accuracy and structural stiffness of the spindle are important factors determining the quality and efficiency of grinding processing. The main indicators for measuring the characteristics of grinding machine spindles are rotational accuracy, stiffness, and speed adaptability
① Rotation accuracy: The radial and axial runout that occurs in the direction that affects machining accuracy during spindle rotation (see form and position tolerances) is mainly determined by the manufacturing and assembly quality of the spindle and bearings
② Dynamic and static stiffness: mainly determined by the bending stiffness of the spindle, the stiffness and damping of the bearings.③ Speed adaptability: The maximum allowed speed and speed range are mainly determined by the structure and lubrication of the bearing, as well as the heat dissipation conditions
Maintenance of grinding machine spindle
To reduce the working temperature of bearings, lubricating oil is often used.
. Lubrication methods include oil air lubrication, oil circulation lubrication, oil mist lubrication, and spray lubrication. When using these methods, the following points should be noted:1. When using oil circulation lubrication, ensure that the oil level in the spindle constant temperature oil tank is sufficient. The advantage of cyclic lubrication is that, while meeting lubrication requirements, it can reduce frictional heating and absorb a portion of the heat from the spindle components
2. Oil air lubrication is exactly the opposite of oil circulation lubrication
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