Title:
リーマの製造方法
Document Type and Number:
Japanese Patent JP7388615
Kind Code:
B2
Abstract:
A reamer is rotated about a central axis and has, in a direction along a central axis, a tool front end and a tool rear end that is an end opposite to the tool front end. The reamer includes a blade on a tool front end side. The blade has, on a circumferential surface, a chamfered cutting edge located on the tool front end side, a circumferential cutting edge contiguous to an end of the chamfered cutting edge on a tool rear end side, and a margin that is a surface contiguous to the circumferential cutting edge. The circumferential cutting edge includes a front end portion between a first position and a second position, the first position being an end on a chamfered cutting edge side, the second position having a distance of 1 mm from the first position in a direction of extension of the circumferential cutting edge. As viewed from a direction passing through the central axis and the circumferential cutting edge and being orthogonal to the central axis, a maximum length of chipping in a direction orthogonal to the direction of extension of the circumferential cutting edge is less than 10 µm at the front end portion, the chipping extending from the circumferential cutting edge to the margin.
Inventors:
Masashi Yamada
Masaaki Kojiro
Jun Okamoto
Taishi Takeshita
Kai Kosuke
Victory Fukuda
Masaaki Kojiro
Jun Okamoto
Taishi Takeshita
Kai Kosuke
Victory Fukuda
Application Number:
JP2022095052A
Publication Date:
November 29, 2023
Filing Date:
June 13, 2022
Export Citation:
Assignee:
Sumitomo Electric Hardmetal Co., Ltd.
Sumitomo Electric Tools Net Co., Ltd.
Asahi Tool Manufacturing Co., Ltd.
Sumitomo Electric Tools Net Co., Ltd.
Asahi Tool Manufacturing Co., Ltd.
International Classes:
B23P15/46; B23D77/00
Domestic Patent References:
| JP5016060U | ||||
| JP8071845A | ||||
| JP56126325U | ||||
| JP2006088229A | ||||
| JP2007245297A |
Foreign References:
| WO2018206704A1 |
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office