Detachable chipbreaker for a cutting insert
AssigneeKennametal Inc.
InventorsEdward J. Oles, John J. Prizzi
Life of this patent
Estimating the term…
Abstract
A cutting insert which includes a holder that contains a pocket and a hard insert that has a rake surface. The hard insert is contained within the pocket so as to present a cutting edge. The cutting insert also includes a chipbreaker which comprises a plate with a bottom surface. The chipbreaker is attached to the cutting insert (or optionally to the holder) so that the plate is spaced above the rake surface of the hard insert a first distance forming a conduit for passage of the chips away from the cutting insert. The conduit is defined at least in part by the rake surface of the cutting insert and the bottom surface of the chipbreaker plate.
Claims31
A cutting insert assembly which comprising:
- a holder containing a pocket;
- a cutting insert having a rake surface, the cutting insert being contained within the pocket so as to present a cutting edge;
- a chipbreaker comprising a plate with a bottom surface, the chipbreaker being attached to the cutting insert so that the plate being spaced above the rake surface of the cutting insert a first distance forming a conduit for passage of the chips through the conduit in a direction generally parallel to the rake surface of the cutting insert and away from the cutting edge of the cutting insert wherein the conduit being defined at least in part by the rake surface of the cutting insert and the bottom surface of the chipbreaker plate.
A chipbreaker for use in conjunction with a cutting insert assembly which has a holder containing a pocket and a cutting insert having a rake surface and at least two flanks surfaces, and the cutting insert being contained within the pocket so as to present a cutting edge, the chipbreaker comprising:
- a plate with a bottom surface wherein the bottom surface generally faces the rake surface of the cutting insert, the plate being spaced above the rake surface of the cutting insert a first distance, and a conduit having opposite open ends and being defined at least in part by the rake surface of the cutting insert and the bottom surface of the chipbreaker plate.
A chipbreaker for use in conjunction with a cutting insert assembly which has a holder containing a pocket and a cutting insert having a rake surface and at least two flank surfaces, and the cutting insert being contained within the pocket so as to present a cutting edge, the chipbreaker comprising:
- a plate with a bottom surface wherein the bottom surface generally faces the rake surface of the cutting insert, the plate being spaced above the rake surface of the cutting insert a first distance, and a conduit having opposite ends and being defined at least in part by the rake surface of the cutting insert and the bottom surface of the chipbreaker plate;
- the plate having an exterior edge, and the exterior edge being spaced rearwardly of the cutting edge of the cutting insert;
- and
- wherein the plate having a distal edge, and the distal edge being in the same vertical plane as its corresponding flank surface of the cutting insert.
A chipbreaker for use in conjunction with a cutting insert assembly which has a holder containing a pocket and a cutting insert having a rake surface and at least two flank surfaces, and the cutting insert being contained within the pocket so as to present a cutting edge, the chipbreaker comprising:
- a plate with a bottom surface wherein the bottom surface generally faces the rake surface of the cutting insert, the plate being spaced above the rake surface of the cutting insert a first distance, and a conduit having opposite open ends and being defined at least in part by the rake surface of the cutting insert and the bottom surface of the chipbreaker plate;
- and
- wherein the chipbreaker further including a base portion integral with the plate, and the base portion containing a passage, and the cutting insert containing a threaded bore adjacent to the pocket, and a fastener passing through the passage and engaging the threaded bore so as to affix the chipbreaker to the cutting insert.
A chipbreaker for use in conjunction with a cutting insert assembly which has a holder containing a pocket and a cutting insert having a rake surface and at least two flank surfaces, and the cutting insert being contained within the pocket so as to present a cutting edge, the chipbreaker comprising:
- a plate with a bottom surface wherein the bottom surface generally faces the rake surface of the cutting insert, the plate being spaced above the rake surface of the cutting insert a first distance, and a conduit having opposite open ends and being defined at least in part by the rake surface of the cutting insert and the bottom surface of the chipbreaker plate;
- and
- wherein the chipbreaker being attached to the cutting insert, and the chipbreaker further including a base portion integral with the plate, and the base portion containing a passage whereby a fastener passing through the passage and engaging a threaded bore in the cutting insert so as to affix the chipbreaker to the cutting insert.
A cutting insert assembly comprising:
- a holder containing a pocket;
- a cutting insert having a rake surface wherein the cutting insert being contained within the pocket so as to present a cutting edge;
- and
- a chipbreaker comprising a plate with a bottom surface, the chipbreaker being attached to the holder so that the plate is spaced above the rake surface of the cutting insert a first distance forming a conduit for passage of the chips through the conduit in a direction generally parallel to the rake surface of the cutting insert and away from the cutting edge of the cutting insert wherein the conduit being defined at least in part by the rake surface of the cutting insert and the bottom surface of the chipbreaker plate.
A cutting insert assembly comprising:
- a holder containing a pocket;
- a cutting insert having a rake surface wherein the cutting insert being contained within the pocket so as to present a cutting edge;
- a chipbreaker comprising a plate with a bottom surface, the chipbreaker being attached to the holder so that the plate is spaced above the rake surface of the cutting insert a first distance forming a conduit for passage of the chips through the conduit in a direction generally parallel to the rake surface of the cutting insert and away from the cutting edge of the cutting insert wherein the conduit being defined at least in part by the rake surface of the cutting insert and the bottom surface of the chipbreaker plate;
- and
- wherein the chipbreaker having a base portion, the base portion having a rearward downward projection, the rake face of the cutting insert containing a channel that receives the rearward downward projection upon assembly of the chipbreaker to the cutting insert.
A method of removing metal from a workpiece using a cutting insert assembly comprising the steps of:
- providing a workpiece;
- providing a cutting insert assembly wherein the cutting insert assembly comprises a holder containing a pocket, and a cutting insert having a rake surface, the cutting insert being contained within the pocket so as to present a cutting edge, and a chipbreaker comprising a plate with a bottom surface, the plate generally facing the rake surface of the cutting insert and being spaced above the rake surface of the cutting insert a first distance, and a conduit having opposite open ends and being defined at least in part by the rake surface of the cutting insert and the bottom surface of the chipbreaker plate;
- moving the workpiece relative to the cutting insert whereby the cutting edge engages the workpiece thereby removing a coil of metal from the workpiece;
- and
- the metal coil impacting at least a portion of the chipbreaker thereby breaking the metal coil into smaller segments.
A method of removing metal from a workpiece using a cutting insert assembly comprising the steps of:
- providing a workpiece;
- providing a cutting insert assembly wherein the cutting insert assembly comprises a holder containing a pocket, and a cutting insert having a rake surface, the cutting insert being contained within the pocket so as to present a cutting edge, and a chipbreaker being attached to the cutting insert and comprising a plate with a bottom surface, the plate generally facing the rake surface of the cutting insert and being spaced above the rake surface of the cutting insert a first distance, and a conduit having opposite open ends and being defined at least in part by the rake surface of the cutting insert and the bottom surface of the chipbreaker plate;
- moving the workpiece relative to the cutting insert whereby the cutting edge engages the workpiece thereby removing a coil of metal from the workpiece;
- and
- the metal coil impacting at least a portion of the chipbreaker thereby breaking the metal coil into smaller segments.
Dependencies are inferred from the claim text.