Investigating the Role of Auditory Perception of Cutting Process Conditions in CNC Machining
Investigating the Role of Auditory Perception of Cutting Process Conditions in CNC Machining
复制标题
研究数控加工中切削工艺条件的听觉感知的作用
DOI：
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
R. Liu
中科院分区：
文献类型：
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作者：
K. Jarosz;Yunbo Zhang;R. Liu
在工业4.0时代，加工声音已被广泛应用于刀具状态监控系统、虚拟加工环境和远程加工解决方案中。然而，人们对了解经验丰富的机械师如何根据他们在真实的加工环境中的听力来检测刀具磨损和不当切削条件的关注有限。本文旨在通过实验研究和分析数控机床操作人员在切削过程中的听觉感知，以及他们利用听觉和专业知识检测不利切削条件和故障的能力。从声压级的角度对加工环境中的噪声进行了分析。确定了声音样本采集的最佳位置，并记录了音频数据以供将来分析。进行了模拟过程故障的实验性切削测试，其中具有不同程度经验的机械师观察过程，听取加工声音，并试图确定切削条件是否正常或是否发生故障。主要的研究目标是分析如何以及操作员可以监控过程中使用他们的各种感官和调查的声音和听觉感知的专业人员在切割过程中的监督和监测的作用。SPL测量表明，声压在加工环境中变化很大，这预计会影响记录的加工声音的质量和音量，这取决于麦克风的位置。切削试验表明，机械师使用各种感官来确定过程中的故障，最重要的是依赖于听觉刺激，其他因素，如振动或工件的视觉检查，在评估切削过程条件和结果时具有次要影响。
In the era of Industry 4.0, the machining sound has been extensively adopted in tool condition monitoring systems, virtual machining environment, and remote machining solutions. However, only limited attention has been paid to understand how experienced machinists detect tool wear and improper cutting conditions based on their hearing in the real machining environment. This paper aims to experimentally investigate and analyze the auditory perception of CNC operators during the cutting process and their capabilities of detecting unfavorable cutting conditions and faults using their sense of hearing and expertise. The sound in the machining environment was analyzed in the aspect of sound pressure levels (SPL). Optimal positions for sound sample acquisition were determined and audio data was recorded for future analysis. Experimental cutting tests with simulated process faults were conducted, where machinists with varying degrees of experience observed the process, listened to the machining sound and tried to determine whether cutting conditions were normal or if faults occurred. The primary research goal was to analyze how well operators can monitor the process using their various senses and to investigate the role of sound and auditory perceptions of trained professionals in cutting process supervision and monitoring. SPL measurements have shown that the sound pressure varies substantially in the machining environment, which is expected to affect the quality and volume of recorded machining sound depending on microphone positioning. Cutting tests have shown that the machinists use various senses to determine faults in the process, relying most significantly on auditory stimuli, with other factors, such as vibrations or visual examination of the workpiece having a secondary effect in the assessment of cutting process conditions and outcomes.