Cutting tool with hardened insert
AssigneeThe Sollami Company
InventorPhillip A. Sollami
Life of this patent
Estimating the term…
Abstract
A cutting tool has a tool body with a hardened insert brazed into a cylindrical seat having a given diameter at the forward end of the tool body. The insert has a cutting tip portion, a generally cylindrical base portion positioned behind the tip, and a frustoconical midsection extending from the tip section to the base section. The base section of the insert has a diameter substantially less than the diameter of the seat and a plurality of radial projection extending outward of the base section assist in aligning the base section within the seat prior to brazing the parts together.
Claims4
A cutting tool comprising
- a tool body having a cutting portion and a cylindrical mounting portion positioned axially behind said cutting portion,
- a seat in a forward end of said cutting portion, said seat having a generally cylindrical wall with a given diameter,
- a hardened insert in said seat, said insert having a tip portion and a base portion, said base portion defining a cylinder having a diameter substantially less than said given diameter,
- a plurality of projections extending radially outward of said base portion,
- said projections having outer ends defining a diameter a little less than said given diameter wherein said plurality of projections centrally position said base within said seat,
- said base having arcuate portions wherein each of said arcuate portions is a portion of said cylinder defined by said base,
- said arcuate portions having an angular width about a circumference of said base,
- said projections having an angular width about said circumference of said base,
- said angular width of said arcuate portions being at least twice said angular width of said projections, and
- said insert bonded into said seat.
A hardened insert for brazing into the seat of a tool body, said seat having cylindrical walls and a given diameter, said insert comprising
- a tip portion and a base portion, said base portion defining a cylinder having a diameter substantially less than said given diameter,
- a plurality of projections extending radially outward of said base portion,
- said projections having outer ends defining a diameter a little less than said given diameter wherein said plurality of projections centrally positions said base within said seat,
- said base having arcuate portions wherein each of said arcuate portions is a portion of said cylinder defined by said base,
- said arcuate portions having an angular width about a circumference of said base,
- said projections having an angular width about said circumference of said base, and
- said angular width of said arcuate portions being at least twice said angular width of said projections.
Dependencies are inferred from the claim text.