What are the ways to reduce the noise of precision parts processing?

In our parts processing industry, in the process of precision parts processing, it is inevitable that there will be noise. This noise will not only interfere with the normal work of technicians, but also be a kind of noise pollution; so is there any way to reduce these noises? Appear? The following is from British United Industry Co., Limited. to tell you:
 
1. Civilized production: More than 30% of gear transmission noise is caused by burrs and bumps. Some precision parts processing factories remove burrs and bumps before assembling the gearbox, which is a passive approach.

2. Noise control measures based on mechanical principles:
1) Improve the structure of mechanical equipment and apply new materials to reduce noise. With the development of material technology, various new materials have emerged, and the production of machine parts with some large internal friction, high damping alloys, and high-strength plastics has become Reality.
2) To improve the machining accuracy and assembly quality of parts, the noise control from the mechanical principle mainly depends on the links of research and development, production and assembly, and generally takes noise reduction measures before leaving the factory. In the later use and maintenance process, avoid no-load and overload of mechanical equipment, and choose good lubricating grease can reduce noise.