FIELD: process engineering. ^ SUBSTANCE: rotary cutter is shaped to polygonal body with cutting edge shaped to polygon in pane perpendicular to its rotational axis. Cutting part of polygonal body with separation grooves made at body vertices consists of N teeth with straight cutting edge and tooth face surface made at angle to cutting plane varying fro two to five degrees. Polygonal body vertices may be rounded to r=0.1-0.4 mm. ^ EFFECT: simplified cutter grinding. ^ 2 cl, 6 dwg
