Reamer with radial relief and cutting land
AssigneeK-Line Industries, Inc.
InventorsDavid A. Kammeraad, James E. Koats
Life of this patent
Estimating the term…
Abstract
A finish reamer adapted to finish ream bronze-based valve guides and valve inserts is disclosed. The reamer includes a body section having a plurality of spiral flutes formed therein. The flutes define a plurality of cutting blades. Each cutting blade has an axially extending radial relief formed therein, and a land with a margin having a non-uniform width that is smaller near its leading end and larger near its trailing end.
Claims20
A finish reamer adapted to finish ream a hard material, said finish reamer comprising:
- a reamer member having a back tapered body section, said body section having a plurality of flutes that define a plurality of cutting blades, each cutting blade having an axially extending radial relief formed therein for dissipating heat during reamer operation that extends along a longitudinal portion of said cutting blade, each of said cutting blades including a surface-finish portion rearwardly of each of said radial relief, each of said cutting blades including a cutting edge and a land, each of said lands including a margin and a heel, with the heel being oriented at a relief angle to said margin, each said margin including a length and a non-uniform width that varies along the length in a predetermined manner chosen to improve heat dissipation and tool efficiency.
A finish reamer adapted to finish ream a valve guide insert, the finish reamer comprising:
- a body section having a plurality of flutes formed therein;
- said flutes defining a plurality of cutting blades;
- and
- each said cutting blade having an axially and longitudinally extending radial relief formed therein, and further having a land with a margin, the margin having a non-uniform width that is smaller near a leading portion of each cutting blade and larger near a trailing portion of each cutting blade.
A finish reamer adapted to finish ream a hard material, said finish reamer comprising:
- an elongated member having a body section with flutes defining a plurality of cutting blades, each of said cutting blades including a cutting edge and a land, each of said lands including a margin having an edge in common with said cutting edge and a heel, said heel being orientated at a relief angle to said margin, an initial width of said margin being about 14 to 30 percent or less of the overall width of said land, and a trailing width of said margin being about 32 to 62 percent or more of the overall width of said land.
A finish reamer adapted to finish ream a hard material, the finish reamer comprising:
- a reamer member having a back tapered body section, said body section having a plurality of flutes that define a plurality of cutting blades, each cutting blade having an axially extending radial relief formed therein for dissipating heat during reamer operation that extends along a longitudinal portion of said cutting blades, each of said cutting blades including a surface-finish portion rearwardly of each of said radial relief, each of said cutting blades including a cutting edge and a land, each of said lands including a margin and a heel, with the heel being oriented at a relief angle to said margin, each said margin including a length and a portion along the length having a width that is less than or equal to about 0.007 inches and that is less than half of a width of the land.
Dependencies are inferred from the claim text.