Patent ID: 7513724

Claim:
A tool for chip removing machining, comprising: a basic body having a hole, which has a rotationally symmetrical basic shape defined by a geometrical center axis, and opens in a front mouth; a detachable body having a front head and a rear male element; and a drawbar, which includes a rear part and a front part in which a first coupling means is included to, by a mechanical engagement with a second coupling means included in the male element of the detachable body, transfer axial forces between the drawbar and the detachable body, the male element of the detachable body being retractable into and projectable out of said hole by means of the drawbar, wherein each one of the two coupling means includes two axially separated ridges which extend at an angle to the center axis, a front ridge being formed in the male element of the detachable body between a first groove proximate the head of the detachable body and a second groove connecting to a rear ridge, the first groove being shallower than the second groove such that a bottom thereof is located at a greater radial distance from the center axis than a bottom of the second groove, and a first groove in the first coupling means being situated between a front and a rear ridge of the first coupling means, while a second groove is situated behind the rear ridge of the first coupling means, wherein bottoms of respective grooves and crests of respective ridges are situated in respective imaginary planes which are perpendicular to the center axis.