Why does the CNC machine CNC machine tool spindle produce noise? How to do?
Noise is a major pollution in our environmental pollution.Long-term in an environment with excessive noise can cause great damage to hearing.In many CNC machine tools,since the spindle's shifting system still uses several drive shafts,gears and bearings,vibration noise,friction noise and impact noise are inevitably generated during operation.Therefore,the hearing health of CNC machining operators is a very difficult problem.Why does the CNC machining CNC machine tool spindle produce noise?How to do?
Jiexiang CNC machining center gives you the following analysis.The variable speed of the main drive system of CNC machine tool is controlled by computer under the condition that the machine tool does not stop working,so it is more continuous and more representative than the noise generated by ordinary machine tools..
The mechanical system is subjected to any exciting force from the outside,and the system will vibrate in response to this exciting force.This vibrational energy propagates throughout the system.When propagating to the surface of the radiation,this energy is converted into a pressure wave that is transmitted through the air,ie,acoustic radiation.
Therefore,the three steps of excitation response,system internal transmission and acoustic radiation are the formation process of vibration noise,friction noise and impact noise.
(1)The main drive system of CNC machine tools mainly relies on gears to complete the shifting and transmission.Therefore,the meshing transmission of the gears is one of the main noise sources.
(2)The assembly,pre-tightening force,concentricity,lubrication condition,load on the bearing,and radial clearance of the bearing and the journal and the bearing hole have a great influence on the noise.Moreover,the manufacturing deviation of the bearing itself largely determines the noise of the bearing.
The harm of noise to the human body is systemic,which can cause changes in the auditory system as well as non-auditory systems.The early stages of these effects are mainly physiological changes,and long-term exposure to relatively strong noise can cause pathological changes.Solving the noise problem of CNC machining CNC machine tools is beneficial to the protection of hearing and the protection of CNC machining CNC machine tools.