Study of the Moment of Inertia Ratio of Feed Axes of Machining Centers to Servo Motors (4th)

―Impact of the Moment of Inertia Ratio on the Fine Surface Machining of Machining Centers―

Abstract

In the former papers “Study of the Moment of Inertia Ratio of Feed Axes of Machining Centers to Servo Motors (2nd,3rd)", the interrelation between the moment of inertia ratio of a machine feed axes to servo motors and actual cutting results by a machining center, and also machine feed axes movement driven by the servo motors is studied. The results of these trials 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.

Among those experiments, however, the ones about the fine surface machining were conducted with only one test workpiece. As the fine surface machining has been emerging as a key production technology for smart electronics devises as well as precision dies and molds, the experiments with actual workpieces machined in actual workshops are necessary to confirm the conclusion in the former papers. With this reason plural actual workpieces typically representing recent trend of the fine surface field are machined in this paper through the same process shown in the former ones.