Cutting processes require more energy, capital, and labor than forming and shaping operations, thus, and they should be minimized whenever possible. Unless carried out properly, cutting processes can have adverse effects on the surface integrity of the product. In spite of these limitations, cutting processes and machines are indispensable to manufacturing technology. Increasing of machining regimes leads to increasing of machining cost and also to increasing productivity rate. The advantages and limitations of machining, and the technical considerations were described in details, however there are some unsolved problems from optimization point of view. In case of multitool machining process when cutters engaged simultaneously or sequentially to define the optimal machining mode that gives maximum productivity rate is important problem. Machining operations cannot be carried out efficiently and economically without a fundamental knowledge of the complex interactions among these elements. This article considers solution of optimal multitool machining processes from the estimate of the productivity rate and machining costs.

machining, productivity, optimization, economics