关键词: 降噪套筒；工艺装备；风动扳手；高分子材料

Abstract: In the assembly process of bolts and nuts, our commonly used impact wrenches and sockets are common assembly tools. The impact wrench and socket produce a large noise due to the impact between the impact plate and the impact shaft inside the impact wrench during the process of tightening the bolt. In this paper, the noise source in the assembly process of impact air gun and sleeve is analyzed in depth, and a new structure sleeve is developed by using polymer materials such as carbon fiber and glass fiber on the basis of the original steel structure sleeve. On the basis of ensuring the original function and performance of the sleeve, the medium of sound propagation is changed, the amplitude of the sound is reduced, and the noise is reduced by 4 decibels compared with the general steel sleeve.

Key words: Noise reduction sleeve; Process equipment; Wind-activated wrench; Polymer material