| 金刚石圆锯片不同转速下的横向振动分析 |
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| 引用本文： | 赵民,李旭.金刚石圆锯片不同转速下的横向振动分析[J].金刚石与磨料磨具工程,2016,36(5):60-63. |
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| 作者姓名： | 赵民 李旭 |
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| 作者单位： | 沈阳建筑大学 机械工程学院, 沈阳 100168 |
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| 基金项目： | 住建部“高速加工石材金刚石刀具关键技术研究”（2012-K3-44） |
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| 摘 要： | 由于大直径金刚石圆锯片的径厚比>200，属于薄板类工具，所以抗弯能力有限。金刚石圆锯片在高速切削过程中常常引起振动，一旦该振动频率与其他外部激振频率发生共振，振幅将会快速增大。利用激光位移传感器，对金刚石圆锯片横向振动测量，研究其在不同转速范围内的横向振动问题。通过转速-振幅曲线，得出圆锯片的横向振幅与转速的变化规律。结果表明:锯片横向振幅随转速增加而增加。在锯片工作转速范围内，其振幅值较小，超过工作转速振幅急剧增加。内径100 mm，外径2300 mm的圆锯片在转速达到300 r/min时，振幅是外径800 mm圆锯片的3.5倍，外径3600 mm的圆锯片同等情况下振幅是外径800 mm圆锯片的7倍。
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| 关 键 词： | 金刚石圆锯片 转速 横向振动 |
Transverse vibration analysis of diamond saw blade at different speeds |
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| ZHAO Min,LI Xu.Transverse vibration analysis of diamond saw blade at different speeds[J].Diamond & Abrasives Engineering,2016,36(5):60-63. |
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| Authors: | ZHAO Min LI Xu |
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| Affiliation: | School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 100168, China |
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| Abstract: | Diamond circular saw blade has become the most important cutting tool during the stone machining and has been used widely in cutting stones.Because the ratio of diameter to thickness is usually larger than 200,the bending ability of blades is limited.Diamond saw blade could also cause vibration in high speed cutting.Once the frequency is close to other external excitation frequency,resonance will occur and the amplitude will increase rapidly.In order to measure lateral vibration of diamond saw blades,the lateral vibration problems at different speed range is studied by using laser displacement sensor.Through analyzing the curve between the speed and the amplitude,the variation rule between the lateral amplitude and the speed of saw blade is concluded.Resultsshow that amplitude of saw blade will increase with the increase of saw blade revolution and remains small in working revolving range.When revolution of saw blade is out of its working range,the amplitude will increase quickly.As with the saw blades with inner diameter of 100 mm,at revolution of 300 r/min,amplitude of blades with outer diameter(OD)2300 mm is 3.5 times as much as that of blades with OD 800 mm,and amplitude of blades with OD 3600 mm is 7 times as much as that of OD 800 mm blades. |
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