摘要
为降低金刚石圆锯片在石材切割时产生的锯切噪声,选取常规锯片、打孔锯片、切缝锯片以及在基体上开鼻型径向槽、开孔与夹层的 5种典型金刚石圆锯片,利用Workbench软件对其模态、行波振动进行分析,研究其对行波振动的影响.结果表明:直径为 180和 230 mm的常规锯片出现行波共振,产生强烈噪声;直径为 105、115和 350 mm的常规锯片不出现行波共振.直径为 180和 230 mm的切缝锯片δ值偏大,有效避开了行波共振;直径为 115和 350 mm的切缝锯片δ值偏小,其降噪效果差;而直径为 105 mm的夹层锯片δ值偏大,降噪效果好.5种直径锯片采用开鼻形径向槽、雨滴孔和阻尼夹层的设计方案,其δ值分别为8.13%、7.21%、6.01%、6.39%和7.00%,可进一步避开行波共振,其降噪效果更好.
Abstract
In order to reduce the sawing noise generated by diamond circular saw blades during stone processing,five typical diamond circular saw blades were selected for modal analysis and traveling wave vibration analysis by using Workbench software.The study explored the impact of various saw blade designs,including conventional saw blades,perforated saw blades,slit saw blades,and saw blades with nose-shaped radial grooves,holes,and interlayers,on travel-ing wave vibrations.The results show that the traveling wave resonance occurs in the conventional saw blades with dia-meters of 180 mm and 230 mm,causing strong noise.Conventional saw blades with diameters of 115 mm,350 mm and 105 mm do not show traveling wave resonance.The δ value for the 180 mm and 230 mm saw blades is too large,which effectively presents traveling wave resonance.The δ value for the 115 mm and 350 mm saw blade is too small,which does not reduce noise very well.The δ value for the 105 mm sandwich saw blade is too large and has a significant ef-fect on noise reduction.To avoid traveling wave resonance and enhance noise reduction,five design schemes incorpor-ating radial grooves,raindrop holes,and damping interlayers are proposed for various blade diameters.The resulting δ values are 8.13%,7.21%,6.01%,6.39%,and 7.00%,respectively.
维普
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