Cutting insert with internal cooling, mold and method for manufacture thereof

Abstract

A cutting insert is provided, comprising a top surface, a bottom surface, a plurality of side surfaces spanning therebetween, and a cutting edge formed at an intersection of the side surface and a forwardly-disposed portion of the top the surface. It further comprises a cooling cavity projecting into the insert, a top end thereof being disposed further forwardly than an open bottom end thereof. The cooling cavity defines at least one molding axis such that a solid element having the shape of the cooling cavity and completely inserted therein may be retracted intact therefrom along a linear path parallel to the molding axis. A circumscribing portion is formed on the side surfaces encircling the cutting insert. The circumscribing portion is formed parallel to the molding axis and has a non-zero height along its entire extent. The cutting insert does not extend beyond the circumscribing portion.

1 - 15 . (canceled) 
     
     
         16 . A press-mold for manufacturing a cutting element including a top surface and a bottom surface generally parallel thereto, and a cavity having a characterizing axis, said characterizing axis being angled to the top or bottom surface between 35-65°; said press mold comprising:
 a male member; and 
 a female member; 
 wherein each of the male and female members have a base surface angled at between 35-65° to a pressing axis of the press-mold, the base surfaces being used to form the top and bottom surface of the cutting element, and at least the male member further having a projection oriented generally along the pressing axis, configured for forming the cavity.