Chip breaker pockets
AssigneeKennametal Inc.
InventorsCui Lu, Jie Cai, Wei Zhao, Jianzhen Gao, Jia Wang
Life of this patent
Estimating the term…
Abstract
A hole finishing tool includes a shank, a body, and a plurality of cutting inserts. The body extends axially from the shank. The body includes ribs. Each of the ribs include a respective pocket. Each cutting insert is attached to the respective pocket of the respective rib. Each cutting insert includes a cutting edge and a chip breaker pocket. The chip breaker pocket is disposed in a rake face of the cutting insert. The chip breaker pocket includes a front boundary and a chip wall. The front boundary is parallel to the cutting edge. The chip wall is disposed at a rotation angle relative to the cutting edge. The rotation angle ranges between 0° to 50°.
Claims25
A hole finishing tool comprising:
- a shank;
- a body extending axially from the shank, the body comprising ribs, each of the ribs comprising a respective pocket;
- and
- a plurality of cutting inserts, each cutting insert attached to the respective pocket of the respective rib;
- wherein each cutting insert comprises:
- a cutting edge;
- and
- a chip breaker pocket disposed in a rake face, the chip breaker pocket comprising:
- a front boundary parallel to the cutting edge;
- and
- a chip wall disposed at a rotation angle relative to the cutting edge, the rotation angle ranging between 0° to 50°.
A cutting insert comprising:
- a cutting edge;
- and
- a chip breaker pocket disposed in a rake face, the chip breaker pocket comprising:
- a front boundary parallel to the cutting edge;
- and
- a chip wall disposed at a rotation angle relative to the cutting edge, the rotation angle ranging between 0° to 50°.
A method of cutting a workpiece comprising:
- rotating a hole finishing tool to cut the workpiece;
- flowing a chip cut from the workpiece into a chip breaker pocket of the hole finishing tool;
- curling the chip off a surface of the chip breaker pocket to cause it to turn over and flow backwards onto the workpiece;
- and then
- breaking the chip against the workpiece.
Dependencies are inferred from the claim text.