Study of the moment of inertia ratio of feed axes of machining centers to servo motors(2nd) - Impact of the moment of inertia ratio on the cutting performance of machining centers -

In the past very few papers have reported the interrelation between servo motor specifications and feed axes of machine tools. In the former paper "Study of the Moment of Inertia Ratio of Feed Axes of Machining Centers to Servo Motors", the interrelation between the moment of inertia ratio and the kinds of actual machining centers as well as their typical work pieces was studied. Based on this study, the interrelation between the moment of inertia ratio of machining center feed axes to servo motors and actual cutting results by a machining center is studied in this 2nd paper. At First three groups of servo motors are prepared with the similar output torque but different moment of inertia. Then these three groups of servo motors are one after another installed in the same machining center, and real machining is carried out under the same cutting conditions. The results of this show that the servo motors with relatively low moment of inertia contribute to high cycle machining, while those with relatively high moment of inertia contribute to high precision and fine surface machining. These results are consistent with the ones in the former paper. © 2019 Japan Society for Precision Engineering. All rights reserved.