发明申请
US20220168824A1 BASE MATERIAL FOR HARD SINTERED MATERIAL, HARD SINTERED MATERIAL, AND CUTTING TOOL
有权
基本信息:
- 专利标题： BASE MATERIAL FOR HARD SINTERED MATERIAL, HARD SINTERED MATERIAL, AND CUTTING TOOL
- 申请号：US17441096 申请日：2020-03-25
- 公开(公告)号：US20220168824A1 公开(公告)日：2022-06-02
- 发明人： Toshihiko MATSUO , Masayuki KOSHIYAMA , Koji FUKATA , Yoichi HAMADA
- 申请人： MITSUBISHI MATERIALS CORPORATION
- 申请人地址： JP Tokyo
- 专利权人： MITSUBISHI MATERIALS CORPORATION
- 当前专利权人： MITSUBISHI MATERIALS CORPORATION
- 当前专利权人地址： JP Tokyo
- 优先权： JP2019-058625 20190326
- 国际申请： PCT/JP2020/013297 WO 20200325
- 主分类号： B23C5/10
- IPC分类号： B23C5/10 ; B23P15/34
摘要：
A base material for a hard sintered material has a multi-stage columnar shape having a central axis and extending in an axial direction of the central axis. The base material includes a smaller-diameter portion, a larger-diameter portion, a base material end surface located between a one end portion in the axial direction of an outer peripheral surface of the larger-diameter portion and the other end portion in the axial direction of the smaller-diameter portion, and facing toward the one end portion in the axial direction, and a first inclined portion disposed in at least a portion in a circumferential direction of an annular corner portion to which an outer peripheral surface of the larger-diameter portion and the base material end surface are connected. The first inclined portion is located inward in a radial direction toward the one end portion in the axial direction.