Patent ID: 8764351

Claim:
An indexable cutting insert ( 100 , 100 ′) having an insert longitudinal axis (A), an insert lateral axis (B) and an insert vertical axis (C), the cutting insert ( 100 , 100 ′) comprising: two opposite insert end surfaces ( 102 ), and a peripheral surface ( 106 ) extending therebetween; two opposite cutting portions ( 108 , 110 ) and a clamping portion ( 112 ) located therebetween, arranged along the insert longitudinal axis (A), wherein: each of the cutting portions ( 108 , 110 ) comprises a rake surface ( 114 ), a front relief flank ( 116 ) and two side relief flanks ( 118 ), with a cutting edge ( 120 ) formed at an intersection of the rake surface ( 114 ) and the front relief flank ( 116 ), the side relief flanks ( 118 ) defining a first width (W 1 ); the clamping portion ( 112 ) does not include the cutting edges ( 120 ), and comprises: first and second side abutment surfaces ( 122 , 123 ) extending between the two insert end surfaces ( 102 ), the first and second side abutment surfaces ( 122 , 123 ) defining a second width (W 2 ), the second width (W 2 ) being greater than the first width (W 1 ), two opposite elongated resilient beams ( 125 ) with a flexibility aperture ( 124 ) therebetween, the flexibility aperture ( 124 ) opening out to the first and second side abutment surfaces ( 122 , 123 ), each of the resilient beams ( 125 ) is located between a respective one of the insert end surfaces ( 102 ) and the flexibility aperture ( 124 ), the flexibility aperture ( 124 ) being spaced apart from the cutting portions ( 108 , 110 ), the only resilient portions of the cutting insert ( 100 , 100 ′) are the two resilient beams ( 125 ).