Chip forming cutting insert with internal cooling
AssigneeSandvik Aktiebolag
InventorStig Lagerberg
Life of this patent
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Abstract
A cutting insert is cooled during chip removing machining of a workpiece by conducting cooling medium through a porous supporting body of the insert. The cooling medium enters the insert through an inlet formed therein at a location remote from a cutting edge of the insert and exits the insert through an outlet formed in the insert at a location proximate the cutting edge. The discharged cooling medium impinges on, and cools, the workpiece.
Claims8
A cutting insert having a cutting edge for chip removing machining, the cutting insert including a supporting body comprising a porous material forming a microporous structure throughout the supporting body to conduct a flow of cooling medium, the supporting body having an outer periphery including an upper surface and a side face, the supporting body being enveloped by a shell substantially impermeable to cooling medium, the shell including a wear body disposed on the upper surface of the supporting body and forming the cutting edge, the shell having at least two openings exposing the supporting body, a first of the openings disposed remotely from the cutting edge and serving as an entrance for cooling medium, and a second of the openings disposed at an upper end of the side face beneath the cutting edge and serving as an exit for cooling medium to cool the cutting edge, the outer periphery of the supporting body defining an inner volume, the microporous structure occupying the entire inner volume.
Dependencies are inferred from the claim text.