Cutting tool and processing method by the same

Details Cutting tool and processing method by the same Cutting tool and processing method by the same

2007-10-02

2011-11-08

Howell, Daniel (Department: 3726)

Cutting by use of rotating axially moving tool

Processes

Bit detachable

C408S11500B

Reexamination Certificate

active

08052355

ABSTRACT:
A cutting tool is provided to process a processed member having an opening portion with a curved inner surface, so that a through hole is formed and a part of the inner surface of the opening portion corresponding to the through hole is processed. The through hole extends from a surface of the processed member to reach the opening portion. The cutting tool includes a shank member, and a processing member having a smaller diameter than the shank member. A groove portion of the processing member has a cutting edge, and a chip evacuation groove through which chip is expelled outward. A self guide portion of the processing member is arranged between the groove portion and the shank member and provided with a substantially cylindrical shape, to guide the cutting edge toward the part of the inner surface of the opening portion corresponding to the through hole in the processing.

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patent: 2918954 (1959-12-01), Miller
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patent: U-7-037531 (1995-07-01), None
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patent: 1775235 (1992-11-01), None
Office Action mailed Apr. 26, 2011 issued in the corresponding JP application No. 2006-272237 with English translation thereof.

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