Invention Grant
- Patent Title: Method for manufacturing cubic boron nitride cutting tool and cubic boron nitride cutting tool
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Application No.: US14415496Application Date: 2013-12-27
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Publication No.: US10160083B2Publication Date: 2018-12-25
- Inventor: Naoki Watanobe , Katsumi Okamura , Hiroki Yonekura , Yosuke Korogi
- Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
- Applicant Address: JP Itami-shi
- Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
- Current Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
- Current Assignee Address: JP Itami-shi
- Agency: Oliff PLC
- Priority: JP2013-071821 20130329
- International Application: PCT/JP2013/085028 WO 20131227
- International Announcement: WO2014/155890 WO 20141002
- Main IPC: B23B27/18
- IPC: B23B27/18 ; B23B27/14 ; B24B3/34

Abstract:
A method for manufacturing a cubic boron nitride cutting tool including a base metal and sintered cubic boron nitride compact at a corner portion of the base metal, capable of improving the accuracy of the center height and reducing the angle of inclination or width of a negative rake face; and the cubic boron nitride cutting tool. The method includes grinding the compact by pressing it against an end face of a grindstone of a grinder to form flank and rake faces on the compact while the base metal of the cutting tool is held by a chuck of the grinder, so that the compact is substantially ground. The rake face is formed to be recessed from a top face of the base metal or only a portion of the compact that protrudes from a base-metal rake face is ground while the tool is continuously held by the chuck.
Public/Granted literature
- US20150202730A1 METHOD FOR MANUFACTURING CUBIC BORON NITRIDE CUTTING TOOL AND CUBIC BORON NITRIDE CUTTING TOOL Public/Granted day:2015-07-23
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