Noise is everywhere in life, the car on the road, the gear in the machine, the hustle and bustle of downtown, let a person be agitated, noise disturbing, not reassuring work and study life, had a great influence on people's body and mind. But there is a group of practitioners in machine tools, all day to listen to let a person depressed these machine noise, physique, also KuangYu, to solve the problem of noise has become an important problem. For a product, the size of the noise is an important indicator to measure the transmission function of the machine tool, basic modern machine tool is given priority to with synchronous belt transmission. You should from what respect to control? On the one hand, from the sound source control. Noise mainly comes from the functioning of the synchronous belt and synchronous belt wheel, pulley itself due to its shape and the actual results, there are some error between belt tooth and can't a good fit is also likely to bring noise, with two belts circle turn noise because of the unbalanced centrifugal force. To solve the noise should choose good quality high precision synchronous belt and synchronous belt wheel. On the other hand, can begin to find a way to from the route of transmission. After operation, mesh belt and belt wheel drives the movement of the gas and air noise generation. Solution: synchronous belt wheel and belt between the width of the narrow as far as possible, while the synchronous belt width and transmit power has a direct relationship, through calculation to find the median good tradeoff noise and transmission power. It is not difficult to solve noise, mainly pay more attention in the use of some details how much can reduce noise pollution, from the point of view of acoustics, sound object vibration propagation, need vibration and transmission media. In the two aspects can fundamentally solve the problem of noise, also staff a quiet working environment.