一、前言 随着机床质量的不断提高,噪音已经成为机床质量的主要技术指标之一。为了评定机床噪音,就需要测定噪音的仪器,通常都采用分贝仪。但这种仪器在国内尚无商品可购。鉴于评定机床噪音工作的需要,我们参考了西安交通大学的资料,并得到山东大学教师的帮助,采用FD-1型测量放 I. Introduction With the continuous improvement of the quality of machine tools, noise has become one of the main technical indicators of machine tool quality. In order to assess the machine noise, you need to measure the noise of the instrument, usually using decibel instrument. However, there is no such product available in China. In view of the need to assess the work of machine noise, we refer to the information of Xi’an Jiaotong University, and with the help of Shandong University teachers, the use of FD-1-type measurement