Cutting insert with cooling channel
AssigneeSandvik Aktiebolag
InventorStig Lagerberg
Life of this patent
Estimating the term…
Abstract
A cutting insert for chipforming machine has a tip face with a cutting edge. Grooves are formed in the top face and extend toward the cutting edge. Chip-deflecting projections extend upwardly from the top face and are situated in spaces formed between adjacent grooves. A jet of cooling fluid is directed toward inner ends of the grooves and travels between the projections and within the grooves toward the cutting edge.
Claims14
A metal-cutting insert for chip removing machining, comprising a top side, a bottom side, a side surface extending between the top side and the bottom side, and a metal-cutting edge disposed between the top side and the side surface;
- the top side including a plurality of upwardly open grooves, each groove extending transversely toward the cutting edge from a groove inner end to a groove outer end, the groove outer end terminating at least closely adjacent the cutting edge for conducting cooling fluid toward the cutting edge;
- projections projecting upwardly from the top surface and defining chip deflectors arranged in alternating relationship with the grooves;
- at least an outer portion of each projection being disposed closer to the cutting edge than is the inner end of an adjacent groove;
- the outer ends of the grooves intersecting the top side at a location disposed at a lower elevation than an uppermost portion of each projection;
- wherein the outer ends of adjacently disposed ones of the grooves are spaced apart by a land defined by the top face, a width of the land being greater than a width of the outer end of each of the grooves.
A method of supplying cooling fluid to a metal-cutting edge of a metal-cutting insert during chip removing machining of a metallic workpiece, the cutting insert being of polygonal shape as viewed in top plan and comprising a top side, a bottom side, a number of side surfaces extending between the top side and the bottom side, and a cutting edge disposed between the top side and at least one of the side surfaces;
- the top side including a plurality of upwardly open grooves, each groove extending transversely toward the cutting edge from a groove inner end to a groove outer end, the groove outer end terminating at least closely adjacent the cutting edge for conducting cooling fluid toward the cutting edge;
- projections projecting upwardly from the top surface and defining chip deflectors arranged in alternating relationship with the grooves;
- at least a portion of each projection disposed closer to the cutting edge than is the inner end of an adjacent groove;
- the method comprising directing a jet of cooling fluid toward the grooves from a location spaced inwardly from the inner ends of the grooves, whereby the cooling fluid travels between the projections and within the respective grooves toward the cutting edge.
Dependencies are inferred from the claim text.