小型圆盘锯机锯切声功率的计算分析

Calculation Analysis of Cutting Sound Power in Small-Sized Disk Saw Machine

以小型圆盘锯机为研究对象 ,通过对锯切过程中主要声源及受力分析 ,明确了主要锯切噪声是由锯齿高频脉冲激励引起锯片和工件的局部高频脉冲振动所产生的。并用大型有限元结构分析软件 ANSYS计算得到了单元速度值 ,根据结构振动声辐射理论 ,对圆盘锯机的锯切噪声进行了定量计算分析。理论计算值与实测结果的比较表明 。

With the small sized disk saw machine as the research object,and through the analysis of the main sound source and action force of the small sized disk saw machine,it indicates that the main cutting noise is produced by the local high frequency pulse vibration of saw blades and workpiece. Using the speed response values of saw blades and workpiece calculated by the large scale finite element analysis software ANSYS,the cutting noise of the disk saw machine is calculated and analyzed quantificationally in accordance with structural sound radiation theory. As compared with the practically measured results, the analysis and the calculation theory established in this paper about cutting noise of the small sized disk saw machine is correct.