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本文指出了现行评价参数Ra、Rz在反映表面几何特性上的不真实性和不糙稳定性,根据我国表面粗糙度标准的现状与实际要求,从理论上提出了表面粗糙度的新型评价参数及其定义,并进行了较全面的分析研究。文中对粗糙表面的理论数学模型也给予了具体论述与处理;借助“零交理论”与“信息论”的基础,结合赋予参数的特殊定义解决了实际测量上的问题,使理论模型达到了实用阶段;提出了从振幅域、时域和频域全面评价的观点。为利用现代测试技术创造了条件。
This paper points out the current evaluation parameters Ra, Rz in reflecting the geometric characteristics of the surface of the untrue and non-rough stability, according to the status quo and the actual requirements of the surface roughness standards in China, put forward a theoretical evaluation of the new surface roughness of the evaluation parameters and Its definition, and conducted a more comprehensive analysis. In this paper, the theoretical mathematic model of rough surface is also discussed and dealt with in detail. With the help of the theory of “zero-crossing theory” and “information theory” and the special definition of parameters, the problems in the actual measurement are solved and the theoretical model reaches the practical stage ; Put forward from the amplitude domain, time domain and frequency domain comprehensive evaluation point of view. For the use of modern test technology to create the conditions.