Cutter service life prediction method based on small sample multi-type parameters

Abstract

The invention relates to a cutter service life prediction method based on small sample multi-type parameters. The method comprises the steps of determining multi-type cutter parameters, executing the parameters xi, i=1,2,..., p which affect the service life of a cutter in the process of predicting the service life of the cutter, obtaining small sample cutter service life experiment data, determining each parameter value in the steps, finishing a cutter service life cutting experiment to obtain small sample cutter service value under a cutter parameter combination, building a dynamic prediction model, determining a new prediction model iterative direction according to the mean square error, the prediction square and PRESS of the prediction module obtained each time, obtaining a better prediction module by adopting corresponding iterative parameters, finishing the iterative process of the prediction model until the variation error of the service life of the cutter is in a set range, and obtaining the final cutter service life prediction module. The cutter service life prediction method based on the small sample multi-type parameters takes the influence on the service of the cutter from the parameters in the design, manufacturing and use processes of the cutter into account, thereby obtaining the more accurate cutter service life prediction module and better providing basic guarantee data for production.

Description

technical field [0001] The invention relates to the field of tool life prediction, in particular to a tool life prediction method based on small samples and multiple types of parameters. Background technique [0002] Tool life, as an important parameter to determine the cost and effect of machining, has always been a research focus and hot spot in machining research. [0003] In the prior art, the Taylor formula is used to calculate the tool life. The Taylor formula is a widely used empirical formula for tool life prediction obtained on the basis of a large number of experiments. The impact of tool life has been strictly and carefully studied, and the impact of other parameters on tool life cannot be distinguished, so it is impossible to determine the main factors that affect or determine tool life. [0004] In view of the above-mentioned defects, the author of the present invention has finally obtained this creation through long-term research and practice. Contents of th...

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Problems solved by technology

[0003] In the prior art, the Taylor formula is used to calculate the tool life. The Taylor formula is a widely used empirical formula for tool life prediction obtained on the basis of a large number of experiments. The impact of tool life has been strictly and carefully studied, and the impact of other parameters on tool life cannot be distinguished, so it is impossible to determine the main factors that affect or determine tool life

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