The spindle of precision surface grinder is mainly used to support transmission parts such as gears and pulleys, and transfer motion and torque. Now let's talk about the standard of measuring the performance of precision surface grinder spindle.
1、 The motion accuracy and structural stiffness of the spindle are important factors to determine the machining quality and efficiency of the grinder.
1. Rotation accuracy: when the spindle rotates, the radial and axial runout in the direction affecting the machining accuracy (see form and position tolerance) mainly depends on the manufacturing and assembly quality of the spindle and bearing.
2. Dynamic and static stiffness: mainly determined by the bending stiffness of the spindle, the stiffness and damping of the bearing.
3. Speed adaptability: the allowable higher speed and speed range are mainly determined by the bearing structure, lubrication and heat dissipation conditions.
2、 Maintenance of grinder spindle
Lubricating oil is often used to reduce the working temperature of bearings. Lubrication methods include oil air lubrication, oil circulation lubrication, oil mist lubrication and injection lubrication. When using these methods, we should pay attention to the following points:
1. When using oil circulation lubrication, the oil quantity of spindle thermostatic oil tank should be enough. The advantage of circulating lubrication is that under the condition of satisfying lubrication, it can reduce friction heat and absorb part of the heat of spindle assembly.
2. The oil air lubrication method only needs to fill 10% of the bearing space capacity.
The above is about to measure the performance of precision surface grinder spindle standards, I hope to help you.
On 2018-08-08 11:45:46
