NC 命令補正方式による高精度旋削加工 : 簡易加工誤差予測曲線とそのデータベースの利用

概要

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This study deals with a compensation system of machining error in turning which has been developed by adopting a simplified predictive function and modifying previously nominal NC commands. The predictive function can be expressed as an exponential curve of which variable is a cutting length. Its coefficients of amplitude and responsibility are determined based on the method of least squares from experimental measurements. They are installed into an auto NC programming tool in the form of a data base of predictive functions. The nominal depth of cut in an NC command is modified to be reduced by the motion resolution of the cutting tool post at each position of cutting length where the machining error is estimated to exceed the motion resolution. Through the experiments the machining accuracy is achieved within few μm in diameter. The experimental results are illustrated and the conclusions are briefly mentioned.
社団法人精密工学会の論文
1991-07-05