CUTTING TOOL
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United States of America Patent
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Issued Date -
Jan 24, 2013
app pub date -
Mar 4, 2010
filing date -
Mar 4, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
To provide a cutting tool in which the amount of waste of a main body unit and a cutting head can be suppressed and oscillation at the time of a cutting process can be suppressed. In a cutting tool 100, a helisert 20 made of steel that is lower in rigidity than cemented carbide is provided between an external screw unit 32 and an internal screw unit 11. Accordingly, the external screw unit 32 and the internal screw unit 11 are prevented from being brought into contact with each other, so that a thread 33 of the external screw unit 32 and a thread 12 of the internal screw unit 11 can be prevented from being damaged. Further, oscillation of a cutting head 30 against the main body unit 10 can be absorbed by providing the helisert 20 between the external screw unit 32 and the internal screw unit 11 because steel is lower in rigidity than cemented carbide.
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