Parting blade and blade holder configured for conveyance of pressurized coolant

摘要

A cutting tool assembly includes a parting blade and a blade holder for holding same. The cutting tool assembly is configured for conveying pressurized coolant via the blade holder to a cutting portion of the parting blade. The blade holder includes a deceleration chamber configured for reducing impact of the pressurized coolant against the parting blade.

主权项

1. An elongated parting blade having unitary one-piece construction and comprising:
opposing first and second side surfaces extending between parallel first and second longitudinal mounting edges and between opposing first and second end edges which extend transverse to the longitudinal mounting edges; each of the first and second longitudinal mounting edges comprises a tapered shape configured to facilitate longitudinal sliding motion of the parting blade, when the parting blade is retained by a blade holder; a cutting portion which is associated with the first longitudinal mounting edge and the first end edge; and a blade passageway configured for conveyance of coolant and extending
from a blade inlet aperture formed in at least one of the side surfaces, the blade inlet aperture being closer to the second longitudinal mounting edge than to the first longitudinal mounting edge and the blade inlet aperture being located between the first and second longitudinal mounting edges,to a blade outlet aperture located at the cutting portion, the blade outlet aperture being closer to the first longitudinal mounting edge than to the second longitudinal mounting edge; wherein: the blade outlet aperture is located in the cutting portion so as to direct coolant to pass above a rake surface and towards a forward cutting edge of a cutting insert, when a cutting insert is retained in the parting blade.