公开(公告)号：US20180141136A1

公开(公告)日：2018-05-24

申请号：US15359717

申请日：2016-11-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： John S. AGAPIOU ,  Martin S. KRAMER ,  Michael HEROLD ,  Narasimha KRAMADHATI

IPC: B23C5/18 ,  B23C3/34 ,  B24C1/00 ,  C23C4/126 ,  C23C4/129 ,  C23C4/134 ,  C23C4/131 ,  C23C4/02 ,  C23C4/06

CPC classification number: C23C4/06 ,  B23B27/145 ,  B23B29/03 ,  B23B41/12 ,  B23B2200/204 ,  B23B2200/205 ,  B23B2215/242 ,  B23B2220/12 ,  B23B2226/315 ,  B23C3/34 ,  B24C1/00 ,  C23C4/02 ,  C23C4/126 ,  C23C4/129 ,  C23C4/131 ,  C23C4/134 ,  F02F1/00 ,  F02F2200/00

Abstract: A tool insert includes first, second, and third teeth arranged on a surface of the tool insert. The first tooth is arranged at a proximal end of the tool insert surface and has an angled leading end and a first tooth height. The second tooth is spaced from the first tooth by a first distance along the surface of the tool insert and has a second tooth height greater than the first tooth height. The third tooth is spaced from the second tooth by a second distance along the surface of the tool insert and has an extending angled portion. The first tooth forms a first groove in a bore surface. The second tooth increases the depth of the first groove. The third tooth provides at least one micro-scratch to one of the first groove and the bore surface.