Cutting tool including an internal coolant system and fastener for a cutting tool including an internal coolant system
AssigneeKennametal Inc.
InventorsX. Daniel Fang, Jean-Luc Dufour, David J. Wills
Life of this patent
Estimating the term…
Abstract
A cutting insert fastener adapted to secure a cutting insert to a cutting tool holder. The fastener comprises a fastener head portion comprising at least one feature adapted to direct a coolant fluid to an insert cutting edge of a cutting insert when the cutting insert is secured to a cutting tool holder by the cutting insert fastener. Cutting tools comprising internal coolant systems and fastened with a cutting insert fastener comprising a fastener head portion with at least one feature adapted to direct a coolant fluid to an insert cutting edge are also disclosed.
Claims19
A fastener adapted to secure a cutting insert to a tool holder, the cutting insert having a top face, a fastening bore and a cutting edge, the fastener comprising:
- a head portion at least partially disposed within the fastening bore of the cutting insert, the head portion, comprising:
- a frustom-shaped sealing surface;
- and
- a recess extending radially inward from the frustom-shaped sealing surface;
- and
- an axial fastening portion adapted to secure the fastener to a tool holder when the fastener is positioned through the fastening bore of the cutting insert, and wherein a cavity is defined by at least a portion of the axial fastening portion of the fastener and at least a portion of the fastening bore of the cutting insert when the axial fastener portion secures the cutting insert, and wherein the cavity is in fluid communication with a coolant bore in the tool holder such that a coolant fluid passes from the coolant bore, through the cavity, and is directed by the recess onto the top face and toward the cutting edge of the cutting insert.
A cutting tool comprising:
- a tool holder including a coolant bore;
- a cutting insert including a top face and a cutting edge and a fastening bore, wherein the fastening bore comprises a frustom-shaped first mating surface;
- and
- a fastener adapted to secure the cutting insert to the tool holder, the fastener comprising a head portion at least partially disposed within the fastening bore of the cutting insert and an axial fastening portion adapted to secure the fastener to a tool holder;
- wherein when the cutting insert is secured to the tool holder by passing the axial fastening portion through the fastening bore, the fastening bore and the fastener define a cavity fluidly communicating with the coolant bore and adapted to direct a coolant through the cutting insert and toward the head portion;
- wherein the head portion comprises:
- a frustom-shaped second mating surface structured to securely abut a portion of the frustom-shaped first mating surface of the fastening bore when the fastener is secured through the fastening bore;
- and
- a recess extending radially inward from the frustom-shaped second mating surface, wherein the recess opens directly to the top face of the cutting insert so as to direct a coolant fluid onto the top face and toward the cutting edge of the cutting insert.
Dependencies are inferred from the claim text.