Patent ID: 8714886

Claim:
A double-sided indexable threading cutting insert ( 14 ), comprising: two opposite end surfaces ( 16 ) and a common periphery ( 18 ) extending therebetween, the periphery ( 18 ) comprising exactly five identical peripheral sections ( 34 ) and exactly five identical peripheral segments ( 32 ), each peripheral segment ( 32 ) extending between two adjacent peripheral sections ( 34 ), each peripheral section ( 34 ) comprising two adjacent abutment sections ( 40 ) located between two rake faces ( 36 ), in a plan view of each end surface ( 16 ) each abutment section ( 40 ) lies on a portion of an imaginary five-pointed star having five outer vertices ( 24 ) alternating with five inner vertices ( 26 ), the outer vertices ( 24 ) being radially outward of the inner vertices ( 26 ) with each outer vertex ( 24 ) forming a tip point of the star; and five cutting portions ( 28 ), each cutting portion ( 28 ) being associated with a respective peripheral segment ( 32 ) and outer vertex ( 24 ), each cutting portion ( 28 ) extending outwardly, and each cutting portion ( 28 ) having two opposite cutting tips ( 30 ).