Patent ID: 8998543
Filing Date: 2015-04-07
Classification: B21C,B23B,B23G,B23P,Y10T

Abstract:
1. A blank for producing a cutting tool, the blank comprising: at least two inner bores for conducting fluids; a substantially continuous outer diameter; and at least a first portion, a second portion, and a third portion along a longitudinal axis of the blank, the inner bores in the first portion each being formed substantially rectilinear and parallel to the longitudinal axis of the blank, the inner bores in the second portion each having a first twist with a first twist angle greater than zero, and the first twist angle of at least one of the inner bores differing from the first twist angle of at least one other of the inner bores, the blank obtained by a continuous pressing operation wherein the third portion is between the first portion and the second portion, wherein in the third portion each inner bore: