Development of a parametric model for calculating cutting forces for external cylindrical turning of steel 20CrMNTi

Abstract

Abstract The paper presents a mathematical model for calculating the cutting force when processing 20crmnti steel with the Sandvik CNMG 120408 16P25T tool. The stand based on the 16d25 machine is presented. It allows measuring the actual values of the spindle speed, longitudinal feed, cutting depth, and cutting force. The results are transmitted to the computer via the LTR-EU-8 workstation with galvanically isolated LTE modules and a synchronization interface. According to the test results, the obtained theoretical model has a deviation from the actual measurements of no more than 0.12%. It is shown that the calculation results provided by the leading tool manufacturers are expected to be overstated. The difference in cutting forces can be more than 1.5 times.