公开(公告)号：US20190210124A1

公开(公告)日：2019-07-11

申请号：US15864600

申请日：2018-01-08

Applicant: Kennametal Inc.

Inventor： Joseph Slusarcyk ,  Thomas J. Long, II ,  Tim J. Marshall ,  Ronald Louis Dudzinsky

IPC: B23C5/20 ,  B23C5/22

CPC classification number: B23C5/202 ,  B23C5/109 ,  B23C5/207 ,  B23C5/22 ,  B23C5/2221 ,  B23C2200/0416 ,  B23C2200/0438 ,  B23C2200/08 ,  B23C2200/125 ,  B23C2200/168 ,  B23C2210/0414 ,  B23C2210/0428 ,  B23C2210/045 ,  B23C2210/28 ,  B23C2226/27 ,  B23C2240/24

Abstract: A compression milling cutter includes a shank and a front cutting portion that terminates at a leading end of the milling cutter. The front cutting portion has a first circumferential row of one or more insert receiving pockets proximate a leading end of the milling cutter, and a second circumferential row of one or more insert receiving pockets, each insert receiving pocket configured to receive a respective indexable cutting insert. The cutting insert mounted in the first circumferential row has a positive axial rake angle, A, and the indexable cutting insert mounted in an insert pocket of the second circumferential row has a negative axial rake angle, B. Because of the different axial rake angles, chips generated during a machining operation flow in opposite directions, thereby creating a compression zone disposed between the first and second circumferential rows. This compression zone replicates the cutting action of a solid end mill, particularly when machining fiber reinforced plastic materials.

公开(公告)号：US10525539B2

公开(公告)日：2020-01-07

申请号：US15864600

申请日：2018-01-08

Applicant: Kennametal Inc.

Inventor： Joseph Slusarcyk ,  Thomas J. Long, II ,  Tim J. Marshall ,  Ronald Louis Dudzinsky

IPC: B23C5/08 ,  B23C5/20 ,  B23C5/22 ,  B23C5/10

Abstract: A compression milling cutter includes a shank and a front cutting portion that terminates at a leading end of the milling cutter. The front cutting portion has a first circumferential row of one or more insert receiving pockets proximate a leading end of the milling cutter, and a second circumferential row of one or more insert receiving pockets, each insert receiving pocket configured to receive a respective indexable cutting insert. The cutting insert mounted in the first circumferential row has a positive axial rake angle, A, and the indexable cutting insert mounted in an insert pocket of the second circumferential row has a negative axial rake angle, B. Because of the different axial rake angles, chips generated during a machining operation flow in opposite directions, thereby creating a compression zone disposed between the first and second circumferential rows. This compression zone replicates the cutting action of a solid end mill, particularly when machining fiber reinforced plastic materials.