发明授权
- 专利标题: Cutting insert
- 专利标题(中): 切削刀片
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申请号: US711707申请日: 1996-08-30
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公开(公告)号: US5791831A公开(公告)日: 1998-08-11
- 发明人: Takamasa Shimano , Tatsuo Arai , Takayoshi Saito
- 申请人: Takamasa Shimano , Tatsuo Arai , Takayoshi Saito
- 申请人地址: JPX 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: JPX Tokyo
- 优先权: JPX5-008653 19930121
- 主分类号: B23C5/20
- IPC分类号: B23C5/20 ; B23C5/22
摘要:
A cutting insert having a generally polygonal tabular form, includes a main cutting edge formed along at least one of the ridges or edges of the upper and lower surfaces which oppose each other in the direction of the thickness of the tabular form, and a face connected to the main cutting edge is formed on the flank or flanks which surround and define the upper and lower surfaces. The face includes a convex curved surface and an angle of intersection between the convex curved surface and one of the upper and lower surfaces progressively changes. The angle of intersection between the convex curved surface and one of the upper and lower surfaces progressively increases or decreases along the length of the face from the face end adjacent to a free end of the tool to a face end adjacent to the base end of the tool. In a preferred embodiment, a flat surface is disposed on each side of the convex curved surface and each flat surface intersects one of the upper and lower surfaces at a constant angle. The flat surface adjacent to the face end adjacent to the free end of the tool intersects with one of the upper and lower surfaces at an angle which is greater or smaller than the angle of intersection between the flat surface adjacent to the face end adjacent to the base end of the tool and one of the upper and lower surfaces of the cutting insert.