| 在线监测刀具磨损过程的频段相干函数法 |
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| 引用本文： | 李晓谦 卢秉恒. 在线监测刀具磨损过程的频段相干函数法[J]. 西安交通大学学报, 1992, 26(6): 33-38,50 |
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| 作者姓名： | 李晓谦 卢秉恒 |
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| 作者单位： | 西安交通大学机械工程系(李晓谦，卢秉恒)，西安交通大学机械工程系(顾崇衔) |
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| 摘 要： | 基于切削过程中刀杆振动的动态特性,建立了借以反映刀具磨损的物理模型和数学模型,由此提出了通过检测刀杆上两主振模态方向上振动加速度信号的频段相干函数来在线监测车刀的磨损过程,并制定了相应的判别准则。试验结果表明,该法灵敏度较高,抗切削条件干扰性强,具有良好的应用前景。
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| 关 键 词： | 刀具 磨损 监测 频段相干函数 |
METHOD OF COHERENCE FUNCTION IN A FREQUENCY BAND USED IN ON-LINE MONITORING OF TOOL WEAR |
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| Li Xiaoqian,Lu Bingheng,Gu Chongxian. METHOD OF COHERENCE FUNCTION IN A FREQUENCY BAND USED IN ON-LINE MONITORING OF TOOL WEAR[J]. Journal of Xi'an Jiaotong University, 1992, 26(6): 33-38,50 |
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| Authors: | Li Xiaoqian Lu Bingheng Gu Chongxian |
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| Affiliation: | Li Xiaoqian;Lu Bingheng;Gu Chongxian Department of Mechanical Engineering |
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| Abstract: | Based on the vibration behaviour of tool holder in metal cutting, physical and mathematicalmodels describing tool wear process are established. Therefrom a new method fot on-line monitoring ofthe tool wear in turning operation via examining the coherence function in a frequency band isproposed. Besides, the criterion for tool wear judgement is formulated. Experimental results show thatthis method is highly sensitive to tool wear and anti-interference to cutting conditions. It gives a goodpromise for real use. |
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| Keywords: | cutting tools wear monitoring |
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