A Method for Calculating the Output Indicators of Turning

Rate of wear, tool life, cutting force and cutting temperature belong to output indicators of turning. To study and analyze these indicators, experimental studies are traditionally used, which require considerable material, financial and time resources. Reference literature and scientific publications contain power functions generalizing the results of experimental research on allowable cutting speeds, the main component of force and the torque. These functions reflect the limited conditions with regard to tool and workpiece materials and are true for tools without wear. A method for calculating the output indicators of turning is proposed based on the developed model. It establishes a mutual relationship with the cutting mode settings, geometrical parameters of the tool and the characteristics of hard alloy and machined material. The calculations are based on the equation of tool wear speed versus the cutting speed and the surface hardness of the tool material. The proposed method makes it possible to determine and analyze the output indicators without conducting labour intensive experimental studies. Experiments are used only for validation and refinement of the calculation results.

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