公开(公告)号：EP1161323A1

公开(公告)日：2001-12-12

申请号：EP99967456.7

申请日：1999-12-20

申请人： U.S. Synthetic Corporation

发明人： JENSEN, Kenneth, M. ,  MIESS, David ,  POPE, Bill, J.

IPC分类号： B24D3/00 ,  B24D17/00 ,  B24D18/00 ,  B23P15/28

CPC分类号： E21B10/5673 ,  B22F7/06 ,  B22F2005/001 ,  B22F2005/005 ,  B22F2998/00 ,  B22F2998/10 ,  B23B27/143 ,  B23B2200/081 ,  B23P15/28 ,  E21B10/5676 ,  E21B2010/566 ,  Y10T407/118 ,  Y10T407/235 ,  Y10T407/24 ,  Y10T407/245 ,  B22F5/00 ,  B22F3/1208

摘要： A method or process for making polycrystalline diamond or polycrystalline CBN cutting tools (Superabrasives) (501), which have integral chip-breaking features (504) is disclosed. This method involves pressing a die or other rigid component against either an outer can cover or the diamond or CBN region directly. This invention provides economical manufacture of diamond chip-breaker tools (501), while avoiding unnecessary EDM EDG, grinding or laser processes. This process forms the chip-breaker (504) on the upper surface of the diamond region (503), during or prior to sintering. This invention permits a wide variety of chip-breaker (504) or other diamond surface features, while minimizing cost and processing steps. Disclosed embodiments include: pressing through the can assembly; pressing within the assembly by introducing a rigid component in the can; and pressing two cans together with an intervening rigid component imposing the desired diamond surface features.