Cutting tool with cooling mechanism and a cutting insert and tool holder therefor

A cutting element comprising top and bottom faces and at least one side face extending therebetween, a cutting portion and a cooling portion, said cutting portion having a rake surface on at least one of said top and bottom faces, a relief surface on said side face, and a cutting edge defined at the intersection between the rake surface and the relief surface, said cooling portion comprising:

• a portion of at least one of the top and bottom faces other than the rake surface, disposed at a location more remote from the cutting edge than the rake surface and constituting an operative surface;
• and
• a cooling nozzle integrally formed therewith and having a cooling aperture directed at the cutting edge at an acute angle with respect to the rake surface, said rake surface being disposed between the cutting edge and the cooling aperture;
• wherein said cooling nozzle is constituted by at least one side wall extending traverse to said operative surface and an upper face extending traverse to said at least one side wall so that said cooling aperture is delimited by said operative surface, said at least one side wall, and said upper face;
• and
• wherein said cutting element is further formed with a cooling channel extending between said bottom face and said top face and being in fluid communication with said nozzle for provision of a cooling fluid thereto.