Investigating the Role of Auditory Perception of Cutting Process Conditions in CNC Machining

K. Jarosz, Yunbo Zhang, R. Liu
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引用次数: 1

Abstract

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.
切削过程条件听觉感知在数控加工中的作用研究
在工业4.0时代,加工声音已广泛应用于刀具状态监测系统、虚拟加工环境、远程加工解决方案中。然而,对于有经验的机械师如何在真实的加工环境中根据他们的听力来检测刀具磨损和不适当的切削条件,人们只给予了有限的关注。本文旨在实验调查和分析CNC操作员在切割过程中的听觉感知,以及他们利用听觉和专业知识检测不利切割条件和故障的能力。从声压级(SPL)的角度分析了加工环境中的声音。确定声音样本采集的最佳位置,并记录音频数据以供将来分析。进行了模拟工艺故障的实验切削试验,由具有不同经验程度的机械师观察工艺,聆听加工声音,并试图确定切削条件是否正常或是否发生故障。研究的主要目标是分析操作人员如何利用他们的各种感官来监控过程,并调查训练有素的专业人员在切割过程监督和监控中的声音和听觉感知的作用。声压级测量表明,在加工环境中,声压变化很大,根据麦克风的位置,这将影响录制的加工声音的质量和音量。切削试验表明,机械师使用各种感官来确定加工过程中的故障,主要依靠听觉刺激,其他因素,如工件的振动或视觉检查,在评估切削过程条件和结果方面具有次要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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