Roughing end mill
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 12, 2018
Issued Date -
N/A
app pub date -
Nov 6, 2014
filing date -
Nov 12, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
In a roughing end mill, an end mill main body is provided with: a peripheral cutting edge; an end cutting edge; and a corner cutting edge formed between the peripheral cutting edge and the end cutting edge. A roughing part having a waveform pattern of recesses and protrusions is formed in the peripheral cutting edge, and a phase of the recesses and protrusions of the roughing part of one chip discharge flute is shifted with respect to that of the other chip discharge flute adjacent to the one chip discharge flute. A foremost protrusion of the roughing part of one peripheral cutting edge is located closer to a distal end of the end mill main body than those of the other peripheral cutting edges, a peak of the foremost protrusion of the one peripheral cutting edge is aligned with another peak of the corner cutting edge adjacent to the one peripheral cutting edge. Also, a peak of a foremost protrusion of the roughing part of each of the other peripheral cutting edges is connected to another peak of the corner cutting edge adjacent to the other peripheral cutting edge by another straight portion extending in a linear manner.
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