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US 6,739,327 B2Granted
Cutting tool with hardened tip having a tapered base
AssigneeThe Sollami Company
InventorPhillip A. Sollami
Life of this patent
Estimating the term…
Abstract
A cutting tool has a centrally located tungsten carbide insert brazed into a seat at the forward end of the tool. The seat has a circular mouth and rearward of the mouth is a frustoconical inner wall. At the bottom of the seat is a transverse surface. A tungsten carbide insert is brazed into the seat and the base of the insert is complementary in shape to the seat. A second annular insert may also be brazed into a complementary shaped annular seat that surrounds the centrally located seat.
Claims20
A cutting tool comprising
- a tool body having a longitudinal axis, a tapered cutting portion, a radial flange axially behind said tapered cutting portion and a cylindrical shank behind said radial flange,
- an insert made of a hardened material,
- said insert having a forward cutting end and a tapered central body axially behind said forward cutting end, and a rearward end,
- said central body tapering from a larger forward diameter to a smaller rearward diameter,
- said tool body having a seat in said forward end of said tapered cutting portion,
- said seat having a mouth and a tapering inner wall extending rearwardly from said mouth,
- a portion of said central body extending into said seat and a portion of said central body extending outward of said seat,
- a portion of said tapered central body of said insert complementary to a portion of said tapering inner wall of said seat, and
- said rearward end of said insert bonded in said seat of said tool body.
6 more elements
A cutting tool comprising
- a tool body having a longitudinal axis, a tapered cutting portion, a radial flange axially behind said tapered cutting portion and a cylindrical shank behind said radial flange,
- said tool body having a seat in said forward end of said tapered cutting portion,
- said seat having a mouth and a tapering inner wall extending rearwardly from said mouth,
- an insert made of a hardened material,
- said insert having a forward cutting end, a tapered central body axially behind said forward cutting end, and a rearward surface rearward of said tapered central body,
- said tapered central body having a forward portion and a rearward portion,
- said forward portion of said tapered central body extending outward of said mouth,
- said seat having an inner surface complementary to said rearward portion of said tapered central body, and
- said rearward portion of said tapered central body and said rearward surface of said insert bonded into said seat.
6 more elements
A cutting tool comprising
- a tool body having a longitudinal axis, a tapered cutting portion, a radial flange axially behind said tapered cutting portion and a cylindrical shank behind said radial flange,
- an insert made of a hardened material,
- said insert having a forward cutting end and a base axially behind said forward cutting end,
- said base having a tapered surface tapering from a larger forward diameter to a smaller rearward diameter,
- said tool body having a seat in said forward end of said tapered cutting portion,
- said seat having a mouth and a tapering inner wall extending rearwardly from said mouth complementary to said base of said insert,
- a first plurality of protrusions spaced around said tapered surface for spacing said tapered surface from said tapering inner wall of said seat,
- a second plurality of protrusions spaced around said tapered surface for spacing said tapered surface from said tapering inner wall, and
- all of said first plurality of protrusions nearer said rearward diameter than any of said second plurality of protrusions.
6 more elements
Dependencies are inferred from the claim text.