REPLACEABLE CUTTING BLADE FOR MILLING CUTTER Russian patent published in 1994 - IPC

FIELD: metal machining. SUBSTANCE: cutting blade has at least one cutting edge, contour of which is defined between front cutting surface and relieved back surface of blade. Relieved back surface has two parts. Contours of first part are defined between cutting edge and intermediate part of relieved back surface and contours of second part are defined between intermediate part and base of blade. First part constitutes first angle of relieved back surface, which is considerably larger than second angle of relieved back surface represented by second part. EFFECT: improved efficiency. 12 cl, 15 dwg