TOOL WEAR MONITORING IN MACHINING PROCESSES THROUGH WAVELET ANALYSIS

机译：小波分析在加工过程中的刀具磨损监测

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A new approach for tool wear monitoring in machining processes based on wavelet transform is presented. The discrete wavelet transformation (DWT) is used to extract feature vectors from vibration signals measured during turning. The feature vectors form an observation sequence, which is a sequence of vectorized parameters consisting of average energy at each scale of the wavelet decomposition. Vibration signals in the feed direction are used for detailed analysis. A series of experiments were then conducted to evaluate the effectiveness of the wavelet-based approach. The feature vectors for sharp and worn tools gave distinct patterns, which were classified using a 3-state hidden Markov model. Experimental results showed the effectiveness of the approach in detecting a sharp and a worn tool.

机译：提出了一种基于小波变换的加工过程中刀具磨损监测的新方法。离散小波变换（DWT）用于从车削过程中测得的振动信号中提取特征向量。特征向量形成观察序列，该观察序列是由小波分解的每个尺度上的平均能量组成的向量化参数序列。进给方向的振动信号用于详细分析。然后进行了一系列实验，以评估基于小波方法的有效性。锋利且磨损的工具的特征向量给出了不同的模式，这些模式使用三态隐藏马尔可夫模型进行了分类。实验结果表明，该方法在检测锋利和磨损的工具方面是有效的。

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来源
《The 2001 North American Manufacturing Research Conference (NAMRC), May 22-25, 2001, Gainesville, Florida》|2001年|p.399-406|共8页
会议地点 Gainesville(FL);Gainesville(FL)
作者
Litao Wang; Mostafa G. Mehrabi; Elijah Kannatey-Asibu;
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作者单位

Engineering Research Center for Reconfigurable Machining Systems Department of Mechanical Engineering University of Michigan Ann Arbor, Ml 48109-2125;

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会议组织
原文格式 PDF
正文语种 eng
中图分类机械、仪表工业;
关键词
turning; tool wear; process monitoring; discrete wavelet transform; feature extraction; observation sequence; hidden markov models (HMMs);

机译：转弯工具磨损；过程监控；离散小波变换特征提取;观察顺序隐藏的马尔可夫模型（HMM）;

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1. Simple machine learning allied with data-driven methods for monitoring tool wear in machining processes [J] . de Farias Adalto, de Almeida Sergio Luiz Rabelo, Delijaicov Sergio, The International Journal of Advanced Manufacturing Technology . 2020,第9a12期

机译：简单的机器学习，采用数据驱动方法，用于监控加工过程中的工具磨损
2. Monitoring tool wear using wavelet package decomposition and a novel gravitational search algorithm-least square support vector machine model [J] . Kong Dongdong, Chen Yongjie, Li Ning Proceedings of the Institution of Mechanical Engineers, Part C. Journal of mechanical engineering science . 2020,第3期

机译：监控工具磨损使用小波包分解和一种新颖的引力搜索算法 - 最小二乘支持向量机模型
3. Tool wear condition monitoring based on wavelet transform and improved extreme learning machine [J] . Laddada Soufiane, Si-Chaib Med Ouali, Benkedjouh Tarak, Proceedings of the Institution of Mechanical Engineers, Part C. Journal of mechanical engineering science . 2020,第5期

机译：基于小波变换和改进的极限学习机的工具磨损条件监控
4. Tool wear monitoring in machining processes through wavelet analysis [C] . Litao Wang, Mostafa G. Mehrabi, Elijah Kannatey-Asibu Jr. North American manufacturing research conference . 2001

机译：通过小波分析加工过程的工具磨损监测
5. Tool Wear Monitoring Based on Fractal Analysis of Cutting Force Signals While Machining Titanium Alloy Within CFRP/Titanium Stack [D] . Jamshidi, Maryam. 2018

机译：基于切割力信号分形分析的工具磨损监测在CFRP /钛堆中加工钛合金的同时
6. Tool Wear Prediction in Ti-6Al-4V Machining through Multiple Sensor Monitoring and PCA Features Pattern Recognition [O] . Alessandra Caggiano 2018

机译：通过多传感器监控和PCA特征模式识别在Ti-6Al-4V加工中的刀具磨损预测
7. : "This paper deals with the functionality of the flaked stone assemblages from several Neolithic sites of the NE of the Iberian Peninsula. The chronological framework ranges from the mid-6th to the mid-4th millennium cal. BCE, which corresponds to the Early and Middle Neolithic. This long period ranges from the arrival of the first farming communities in the Iberian Peninsula, around 5600-5500 cal. BCE, to 3600-3500 cal. BCE, two millennia later, when Neolithic communities had stably occupied most of the available territory, from the mountainous areas of the Pyrenees to the coastal areas of the Mediterranean.In this context, the NE of the Iberian Peninsula is one of the areas where a major number of use-wear analyses have been carried out, especially for what concerns the Neolithic period. This is mainly due to the interest shown by the directors of the excavations and by the Spanish use-wear specialists as well; both participated and cooperated in order to enlarge the number of contexts studied, making the NE of the Iberian Peninsula one of the areas of Europe with the largest number of ‘functional studies’. As a result, today we have a reliable picture of the type of lithic tools used by the first farming groups, how they were used, and which needs they were satisfying.The methodology employed for this type of analysis is today broadly shared by most use-wear specialists. A stereoscopic microscope is used together with a reflected-light microscope for the analysis of the archaeological specimens. Afterwards, the observed use-wear traces are compared with the traces from experimental tools. This study primarily made use of the tools preserved at the ‘Traceoteque’ of the Institución Milà y Fontanals of the CSIC of Barcelona.This paper presents the results obtained for the different types of analysed sites and the relative lithic assemblages. In this way, tools from different contexts are compared: open-air sites, caves and rock-shelters, pit-sites, burials, and mining sites. Such a diversity of contexts allowed for the exploration of the existence of recurrences and differences in the functionality of the lithic tools from one site to another. The results obtained have also provided information on some aspects related to the economic processes carried out at the different sites, caves, rock-shelters and open-air contexts. It has been possible to gain fresh data on the types of tasks carried out and their relative importance for each site, their relation with the geographical and environmental context and the natural resources available there. In addition, analysing tools recovered from burials – mainly individual inhumations – provided information on the relationships between the buried individuals and the working tools, in particular exploring the relationships between sex and age patterns and the types of tools deposited as goods.In conclusion, use-wear analysis allowed for the exploration of a variety of issues; from technical aspects related to the production and management of the lithic resources to social aspects related to the subsistence activities and the individuals that carried them out." [O] . Gibaja Bao, Juan Francisco, Mazzucco, Niccolo 2015

机译：：“本文研究了伊比利亚半岛东北部几个新石器时代遗址的片状石材组合的功能。时间框架从公元前6世纪中叶到4世纪中叶，分别对应于早期和早期。新石器时代中期，这段时间的长短是从伊比利亚半岛的第一个农业社区到来，大约在公元前5600-5500 cal，到了两千年后的3600-3500 BCE，当时新石器时代的社区稳定地占据了大部分可用土地。从比利牛斯山脉山区到地中海沿岸地区。在这种情况下，伊比利亚半岛东北部是进行过大量使用磨损分析的地区之一，尤其是在关注方面新石器时代，这主要是由于发掘负责人和西班牙使用服装专家表现出的浓厚兴趣；他们参与和合作以扩大孔蒂的数量xts进行了研究，使伊比利亚半岛的NE成为“功能研究”数量最多的欧洲地区之一。结果，今天我们可以可靠地了解第一批耕作小组使用的石器工具的类型，使用方法以及它们满足的需求。今天，大多数使用方法广泛共享用于这种类型的分析的方法穿专家。立体显微镜与反射光显微镜一起用于分析考古样本。然后，将观察到的使用磨损痕迹与实验工具的痕迹进行比较。这项研究主要利用了巴塞罗那CSIC的米拉·丰塔纳尔研究所的“ Traceoteque”中保存的工具。本文介绍了针对不同类型的分析地点和相对石器组合所获得的结果。通过这种方式，可以比较来自不同环境的工具：露天场所，洞穴和岩石避难所，露天场所，埋葬场所和采矿场所。如此多样的上下文允许探索重复性的存在以及从一个站点到另一个站点的石器工具的功能差异。所获得的结果还提供了与在不同地点，洞穴，避难所和露天环境中进行的经济过程有关的某些方面的信息。可以获得有关所执行任务的类型及其对每个站点的相对重要性，它们与地理和环境环境以及那里可用自然资源的关系的新数据。此外，对从墓葬中回收的工具（主要是个人遗体）进行分析，可提供有关被掩埋的个体与工作工具之间关系的信息，尤其是探索性别与年龄模式之间的关系以及作为商品存放的工具的类型。磨损分析允许探索各种问题；从与石器资源的生产和管理有关的技术方面到与自给活动及其实施者有关的社会方面。”

TOOL WEAR MONITORING IN MACHINING PROCESSES THROUGH WAVELET ANALYSIS

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