Patent ID: 8876446

Claim:
A cutting tool ( 20 ) comprising a cutting insert ( 22 ) removably securable in a tool shank ( 24 ) by means of a clamping bolt ( 26 ); the tool shank ( 24 ) extending along a longitudinal axis (A 1 ), and having spaced apart first and second protuberances ( 28 , 30 ) protruding from an end portion ( 32 ) thereof; the first protuberance ( 28 ) having a through bore ( 36 ) and the second protuberance ( 30 ) having a threaded bore ( 38 ), the through bore ( 36 ) and the threaded bore ( 38 ) extending coaxially along a bore axis (A 2 ), the cutting insert ( 22 ) having a body portion ( 40 ) and a cutting portion ( 42 ); the body portion ( 40 ) having a cut-out ( 44 ) extending along a cut-out axis (A 3 ) from a first side surface ( 46 ) to an opposing second side surface ( 48 ) and opening out to a bottom surface ( 50 ) extending therebetween, the cut-out ( 44 ) including at least one undercut ( 52 ), and the clamping bolt ( 26 ) having a bolt shank ( 60 ) extending away from a bolt head ( 62 ) along a bolt axis (A 5 ); the bolt shank ( 60 ) having a threaded portion ( 64 ) distal from the bolt head ( 62 ) and at least one bolt locking portion ( 66 ), wherein: the first and second side surfaces ( 46 , 48 ) are located between the first and second protuberances ( 28 , 30 ), and each of the at least one undercut ( 52 ) has at least one undercut sub-surface ( 54 ) with respect to a forward direction (F), and wherein the clamping bolt ( 26 ) can be rotated about its bolt axis (A 5 ); from a locked position wherein the threaded portion ( 64 ) is threadingly engaged in the threaded bore ( 38 ) and the at least one bolt locking portion ( 66 ) is located directly forward of the at least one undercut sub-surface ( 54 ) of one of the at least one undercut ( 52 ), to an un-locked position wherein the threaded portion ( 64 ) remains threadingly engaged in the threaded bore ( 38 ) and no portion of the bolt shank ( 60 ) is located directly forward of any of the at least one undercut sub-surface ( 54 ) of any of the at least one undercut ( 52 ).