How does the CNC machine spindle produce noise and how to solve it?

In many CNC Lathe Machines, vibration,noise and frictional noise are unavoidable due to the fact that a number of drive shafts, gears and bearings are used in the mainshaft transmission system.

While main drive system speed of CNC Lathe Machine does not stop working in the state, controlled by the computer to complete. So cnc Lathe Machine noise is more continuous than ordinary lathe machine.

Outside force subjected mechanical system to produce vibration.The vibration energy transmit throughout the system. When it transmit to the radiation surface, the energy will be converted into a pressure wave, which is passed through the air, forming acoustic radiation.

Therefore, excitation response, internal transmission and acoustic radiation, there three steps are forming process of vibration noise, frictional noise and impulse noise.

1 CNC machine tool main drive system is mainly by gear to complete the speed change and transmission . Therefore, the engaging transmission drive is one of the main noise source.

2 Bearing ,lubrication conditions and radial clearance of bearings etc also have a great impact on the noise.