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Improved dynamic compensation for accurate cutting force measurements in milling applications

机译：改进的动态补偿功能，可在铣削应用中进行精确的切削力测量

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摘要

Accurate cutting-force measurements appear to be the key information in most of the machining related studies as they are fundamental in understanding the cutting processes, optimizing the cutting operations and evaluating the presence of instabilities that could affect the effectiveness of cutting processes. A variety of specifically designed transducers are commercially available nowadays and many different approaches in measuring cutting forces are presented in literature. The available transducers, though, express some limitations since they are conditioned by the vibration of the surrounding system and by the transducer's natural frequency. These parameters can drastically affect the measurement accuracy in some cases; hence an effective and accurate tool is required to compensate those dynamically induced errors in cutting force measurements. This work is aimed at developing and testing a compensation technique based on Kalman filter estimator. Two different approaches named "band-fitting" and "parallel elaboration" methods, have been developed to extend applications of this compensation technique, especially for milling purpose. The compensation filter has been designed upon the experimentally identified system's dynamic and its accuracy and effectiveness has been evaluated by numerical and experimental tests. Finally its specific application in cutting force measurements compensation is described.
机译：准确的切削力测量似乎是大多数与加工相关的研究的关键信息，因为它们对于理解切削过程，优化切削操作和评估可能影响切削过程有效性的不稳定性至关重要。如今，各种专门设计的换能器在市场上都可以买到，并且在文献中提出了许多测量切削力的方法。但是，可用的传感器存在一些局限性，因为它们受周围系统的振动和传感器的固有频率限制。在某些情况下，这些参数会严重影响测量精度。因此，需要一种有效而准确的工具来补偿切削力测量中那些动态引起的误差。这项工作旨在开发和测试基于卡尔曼滤波器估计器的补偿技术。已经开发了两种不同的方法，分别称为“带拟合”和“平行加工”方法，以扩展该补偿技术的应用，尤其是用于铣削目的。补偿滤波器是根据实验确定的系统的动态特性设计的，其准确性和有效性已通过数值和实验测试进行了评估。最后描述了其在切削力测量补偿中的具体应用。

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  • 来源
    《Mechanical systems and signal processing》 |2015年第3期|314-324|共11页
  • 作者

    A. Scippa; L. Sallese; N. Grossi; G. Campatelli;

  • 作者单位

    Department of Industrial Engineering, University of Firenze, via di Santa Marta 3, 50139 Firenze, Italy;

    Department of Industrial Engineering, University of Firenze, via di Santa Marta 3, 50139 Firenze, Italy;

    Department of Industrial Engineering, University of Firenze, via di Santa Marta 3, 50139 Firenze, Italy;

    Department of Industrial Engineering, University of Firenze, via di Santa Marta 3, 50139 Firenze, Italy;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Milling; Cutting forces; Experimental measurements;

    机译：铣削切削力;实验测量;

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