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本文从加工表面完整性观点讨论了磨削表面层烧伤的实质,指出影响烧伤的主导因素是磨削温度。介绍了用最大熵谱分析,红外系统及光纤—红外系统,通过磨削火花温度,对磨削表面层烧伤进行在线控制的研究。研究结果证明,磨削火花温度所表达的过程是平稳的过程,集中的火花束温度与磨削温度变化规律一致。当磨削表面层烧伤,火花温度变化的特征可用最大熵谱分析进行辨识。
In this paper, the essence of the burn on the surface layer is discussed from the viewpoint of the surface integrity. It is pointed out that the main factor affecting the burn is the grinding temperature. The maximum entropy spectrum analysis, infrared system and optical fiber - infrared system are introduced to study the on - line control of burned surface layer by grinding spark temperature. The results show that the process expressed by the grinding spark temperature is a smooth process, and the concentration of the spark plume is consistent with the variation of the grinding temperature. When grinding the surface layer burns, the characteristics of the spark temperature change can be identified by maximum entropy spectral analysis.