A cutting insert includes a cutting edge extending obliquely relative to a center line of the insert. A chip breaking recess is spaced inwardly from the cutting edge and extends parallel hereto. A drill tool contains three inserts situated along a common diameter. The center insert has a cutting edge radially overlapping the cutting edges of the other two inserts. Each of the cutting edges of the other two inserts extends axially rearwardly and radially outwardly.
申请公布号
DE69124953(T2)
申请公布日期
1997.06.12
申请号
DE1991624953T
申请日期
1991.12.18
申请人
SANDVIK AB, SANDVIKEN, SE
发明人
NYSTROEM, LEIF, S-810 28 JAERBO, SE;LAGERHOLM, CLAES, S-811 61 SANDVIKEN, SE;YAKAMAVICH, ANTHONY F., JR., GLENWOOD, NEW JERSEY, US