| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: proposed cutting plate comprises pair of opposite face surfaces, pair of opposite auxiliary and pair of opposite main surfaces. Every face and main surfaces have two main cutting edges and two auxiliary cutting edges. Every main and adjoining auxiliary cutting edges are connected via angular cutting edge. To increase milling precision, each auxiliary surface has two grooves. Each said groove has bottom and reaches adjoining face surface. Every groove bottom and adjoining face surface intersect along groove edge. At least one section of the latter forms rear cutting edge arranged cross wise to be connected with adjoining auxiliary cutting edge. Milling cutter comprises body with front face accommodating multiple cutting plate seats. Note here that rear cutting edge corresponding to cutting front surface extends radially outside the body peripheral surface. Method of milling consists in using milling cutter with multiple cutting plates. To increase precision of milling, milling cutter is fed axially downward with respect to workpiece. Note that, at least parts of main and auxiliary cutting edges of every plate mill the workpiece. Milling cutter axial travel is interrupted for a certain time interval during which it penetrates into workpiece to make at least one part of cutting main and auxiliary cutting edges producing recess in workpiece. Now, the milling cutter is move up axially to allow at least a part of cutting main and auxiliary edges to remove material located axially above workpiece. ^ EFFECT: higher accuracy of milling. ^ 7 cl, 5 dwg |
