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An Approach Based on Process Signature Modeling for Roundness Evaluation of Manufactured Items

机译：基于过程签名模型的制造产品圆度评估方法

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摘要

In evaluating the geometrical characteristics of mechanical part, cleverness may be added with the definition of an empirical model representing the "signature" left by the manufacturing process used to make the part. This manufacturing signature is the systematic pattern that characterizes all the features machined with that process. If such a model is available, it may be exploited to enhance geometrical inspection accuracy. In this paper, an approach for geometrical inspection of machined profiles is proposed. This approach consists in computing form deviations by reconstructing the actual profile using a frequency model of process signature. The method has been thoroughly investigated in different simulated scenarios and benefits in terms of improved accuracy are demonstrated. Within the paper, a case study, related to roundness of mechanical parts obtained by turning, is used. The relationships between the number of sampled points and fitting algorithms are also pointed out.
机译：在评估机械零件的几何特性时，可以在经验模型的定义中添加一些技巧，这些经验模型表示用于制造零件的制造过程所留下的“特征”。这种制造特征是系统的模式，它表征了该过程中加工的所有特征。如果有这样的模型，则可以利用它来提高几何检查的准确性。本文提出了一种加工轮廓的几何检验方法。该方法在于通过使用过程签名的频率模型重建实际轮廓来计算形状偏差。该方法已在不同的模拟场景中进行了深入研究，并在提高准确性方面得到了好处。在本文中，使用了一个案例研究，该案例研究涉及通过车削获得的机械零件的圆度。指出了采样点数量与拟合算法之间的关系。

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