Head Replaceable Cutting Tool
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United States of America Patent
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N/A
Issued Date -
Jun 6, 2013
app pub date -
Dec 5, 2012
filing date -
Dec 6, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A cutting tool has a cutting head and a shank. The cutting head has a body, a head threaded portion, a first helical head surface and a second helical head surface. The shank has a cylindrical portion, a shank threaded portion, a first helical contact surface and a second helical contact surface. The head threaded portion screw-engages the shank threaded portion. The first helical head surface is parallel to the thread of the head threaded portion and the first helical contact surface is parallel to the thread of the shank threaded portion. The second helical head surface and the second helical contact surface are inclined reversely to the first helical head surface and the first helical contact surface, respectively. The first helical head surface comes into surface contact with the first helical contact surface. The second helical head surface comes into surface contact with the second helical contact surface.
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