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US 11,491,561 B2Granted
Milling tool with coolant flow grooves
AssigneeSandvik Intellectual Property AB
InventorGaetano Pittala
Life of this patent
Estimating the term…
Abstract
A cutting tool having an elongate cutting head provided with a plurality of teeth and flutes in which a plurality of cooling grooves are recessed at a land region of each tooth between a cutting edge and a trailing edge. The grooves at the land do not extend to and are physically separated from the cutting edge to provide a tool optimized for cutting via radially consistent cutting edges and the promotion of heat exchange and dissipation from the rearward side/region of the teeth.
Claims14
A milling tool comprising:
- an elongate cutting head having a longitudinal axis and a plurality of teeth extending axially along the head;
- each tooth having a rake face terminated at a radially outer region by a cutting edge and a clearance face terminated at a radially outer region by a trailing edge, wherein, for each tooth, a radial distance from the longitudinal axis to the cutting edge is greater than a radial distance from the longitudinal axis to the trailing edge;
- a plurality of flutes, each flute being defined between the rake face and the clearance face of respective adjacent teeth;
- a land defined between the cutting and the trailing edges at each tooth;
- a plurality of grooves recessed in the trailing edge and extending into the clearance face and the land of each tooth, wherein the grooves are configured to direct coolant fluid towards the cutting edge, wherein each of the grooves extend at the land in a direction from the trailing edge to the cutting edge and terminates before reaching the cutting edge, wherein a distance by which each of the plurality of grooves extends widthwise across the land from the trailing edge towards the cutting edge is in the range equal to or less than 80% of a width of the land between the cutting edge and the trailing edge in a direction aligned perpendicular to a longitudinal direction along which the cutting edge and the trailing edge extend;
- and
- at least one coolant passage extending axially along the head, the at least one coolant passage having at least one terminal end positioned at a region of at least one of the flutes.
4 more elements
Dependencies are inferred from the claim text.