Experiments are conducted in CNC machine using Taguchi’s principles. Results from experimentation are used to train and test the developed neural network models. The performance of the developed hybrid neural network models is measured in terms of computational accuracy and speed. Confirmatory tests are done to validate this approach. From Table 6 the predictive error computed using NNPSO is less compared with other developed models. The reason is that NNPSO model searches solution in the search space different from other neural network models. It maintains a internal memory to store the Gbest and Pbest solutions. Each individual in the population tries to emulate the Gbest and Pbest solutions in the memory by updating two PSO equations. But NNGA model iteratively searches for several good individuals in the population, and make the population to emulate the best solutions found in that generation through reproduction, crossover and mutation operators. Hence it requires substantial computational time to perform decision making whereas back propagation algorithm training network may converge to a set of sub-optimal weights. Hence the effectiveness of NNPSO model in finding the true global optimal solution is competent than the other neural network models. The developed neural network model with PSO predicts the output with an accuracy of error is hardly less than 2%.