Cutting insert, cutting tool, and method for manufacturing machined product
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United States of America Patent
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Oct 15, 2024
Grant Date -
N/A
app pub date -
Feb 25, 2020
filing date -
Feb 26, 2019
priority date (Note) -
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Abstract
A cutting insert may include an upper surface, a lower surface, a front lateral surface and a rear lateral surface. The upper surface may include a first upper cutting edge and an upper constraining surface. The lower surface may include a lower constraining surface. The lower constraining surface may include a lower groove. The lower groove may include a first region, a second region and a third region. The first region may be located on a side opposite to the upper constraining surface. A wedge angle of the first region may be a first angle, a wedge angle of the second region may be a second angle, and a wedge angle of the third region may be a third angle. The first angle may be smaller than each of the second angle and the third angle.
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