Patent ID: 7445411
Filing Date: 2008-11-04
Classification: B23B,Y10T

Abstract:
1. A rotary cutting tool having a longitudinal axis of rotation and comprising: a conduit, for passage of fluid, formed in the cutting tool and extending generally axially, an insert pocket opening out to a peripheral surface of the cutting tool via an aperture, the insert pocket communicating with the conduit, a cutting insert slidably retained in the insert pocket, the cutting insert being slidable from a retracted position to an extended position by means of fluid pressure applied by the fluid which bears against and biases the cutting insert towards the extended position, wherein in the extended position at least a portion of the cutting insert protrudes from the aperture beyond the peripheral surface of the cutting tool; and a threaded holding member configured to prevent the cutting insert from exiting the insert pocket and limit rotation of the cutting insert around an insert axis (B) of the cutting insert.