Abstract: Dimensional theory is used syatematically for atudying a series of problema of metal cutting, namely cutting ! Force. And turning moment,cutting temperature and wenr of tools, Some defects or, errors in the references [8][12] are also pointed. Out.The principles of experiments and the method for .deriving the, empirical equations of. Determining axial force and turning moment for drilling with twist drills are.discussed in details on the.Basis of experimental data[13]. From the discussion, it is shown that in research of drilling with twist drills theinfluence of transverse edge as an independent fator can be neglected; and if the influence of dimensionless. Number su/a is neglected, the exponent of S(feed perrevolution) in the empirical equation will be augmented It has been point out that by further. Application of the theory of similitude to the research of metal cutting,the cquations in terms of dimensionless numbers call beused on a more complete and more rigorous theoretical basis.

Key words: Hybrid algorithm, Inverse scheduling, Uncertain processing parameter, Shop scheduling