Vinogradov

pp. 43-59

pp. 74-87

pp. 42-55

pp. 1-15

pp. 22-58

pp. 124-135

pp. 21-33

An approach to decision making on practicability of purchasing new metal-cutting machinery in the context of processing’s prime cost was proposed; this is an actual problem for many machine builders which upgrade their machine tool population. It was shown that the cutting speed that provides minimal prime cost is a key to this problem. A formula for estimating the lowest prime cost of cutting action was derived. The author analyzed key factors influencing the solution to the problem of practicability of purchasing a new metal-cutting tool. It was also shown that it is impossible to reduce the prime cost of processing by increasing cutting speed. The only way to reduce the prime cost of processing by new equipment is a decrease in auxiliary time. The area of unprofitability of old machinery replacement was determined.