Effect of Geometrical Parameter Cutting Edge on the Toroidal Forming Surface of a Solid End Mill

¹ Dept. of Cutting Tools and Shaping Technologies, Moscow State University of Technology “STANKIN”, RU-127055, Moscow, Russia;
² Dept. of High-Efficiency Processing Technologies, Moscow State University of Technology “STANKIN”, RU-127055, Moscow, Russia
³ Lab. of Micromachining Technologies, Moscow State University of Technology “STANKIN”, RU-127055, Moscow; Russia;
⁴ Center of Cognitive Technologies and Machine Vision, Moscow State University of Technology “STANKIN”, RU-127055, Moscow; Russia;

^* PMPivkin@gmail.com; phone +74999729520

Published online: 26 April 2021

Abstract

Solid end mill with a toroidal forming section are the most productive solutions in the field of processing difficult-to-process materials. The process of forming the cutting geometry of such cutters is performed on grinding machines with CNC with the use of abrasive grinding wheels. The formation of the cutting edge on the toroidal section is carried out by discrete movements of the working bodies of the machine in accordance with the control program. The disadvantage of the stepper drive used in CNC machines is the limited discreteness of the described trajectory resulted in the loss of accuracy when forming radius, arc, spherical and toroidal sections. Loss of accuracy in the formation of elements of the working geometry of a solid end mill can negatively affect the tool life, and the structural strength of the joints of the transition of working surfaces. The study is aimed at identifying the necessary and sufficient number of points that describe the spatial shape of the cutting edge with acceptable loss of accuracy.