Cutting tool
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 17, 2014
Grant Date -
Jul 5, 2012
app pub date -
Sep 23, 2009
filing date -
Sep 23, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cutting tool is designed to prevent chip packing. The cutting tool includes a body that rotates about an axis center, a hole portion that is open in a tip end surface of the body, a wall portion that is formed of the hole portion and an outer circumferential surface of the body, a notch portion that is communicated with the hole portion, and a blade portion that is formed or held at a portion where the notch portion intersects with the tip end surface of the wall portion. The blade portion includes an inner side surface that passes through an inner end portion of a bottom blade and intersects with a rake surface through a ridge line. The inner side surface is inclined so that a distance between the inner side surface and the axis center is increased towards a direction opposite to the rotational direction of the body.
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