我厂机械加工车间的六角车床和自动车床的送料管是由普通铁管制成。当机床开动运转时,送料管内的金属棒料随着床头箱主轴的旋转打击送料管壁,发出的噪声达100分贝。为了保护工人的身体健康,我们研制了一种密封式消声送料管(见示意图)。 该送料管由双层管道壳和双层管盖,泡沫塑 I plant mechanical processing workshop hexagonal lathe and automatic lathe feed tube is made of ordinary iron pipe. When the machine tool starts running, the metal bar inside the feeding tube blows the feeding tube wall with the rotation of the headstock spindle, and the noise emitted reaches 100 dB. In order to protect the health of workers, we have developed a sealed muffler feed tube (see diagram). The feed tube consists of double pipe shell and double tube cover, foam