Cutting insert
AssigneeSantrade Ltd.
InventorJorgen V. Wiman
Life of this patent
Estimating the term…
Abstract
The present invention relates to a cutting insert (11) for length turning, inwards turning and outwards transversal turning having a generally rhombic or triangular basic form with a cutting edge (14), a cutting edge (15) and a transversal turning edge (18). The transversal turning edge (18) is arranged to cut and break coarse but short chips (21) and the cutting edge (14) is at the same time arranged to cut fine and continuous chips (22) to obtain a good surface fineness during the transversal turning operation.
Claims14
A cutting insert adapted for length turning, inwards turning, and transversal turning operations, said insert comprising:
- a body having a pair of cutting edges converging at an angle less than ninety degrees to form a cutting nose for performing a cutting operation during length turning and inwards turning operations, and
- a protruding cutter portion situated at an end of at least one of said converging cutting edges and protruding transversely beyond a plane containing said at least one converging cutting edge, said protruding portion forming a transverse cutter edge, at least a section of which faces away from said nose to cut coarse and short chips during a transversal turning operation wherein said protruding portion leads said cutting nose, and a portion of said at least one cutting edge disposed adjacent said cutting nose cuts finishing chips.
A method of performing a transversal turning operation on a workpiece by means of an insert which comprises a body having a pair of cutting edges converging at an angle less than ninety degrees to form a cutting nose, and a protruding cutter portion situated at an end of at least one of said cutting edges and protruding transversely beyond a plane containing said at least one converging cutting edge, said protruding portion forming a transverse cutter edge, a section of which faces away from said nose, said method comprising the step of relatively moving said insert and said workpiece such that said protruding cutter portion leads said cutting nose and said transverse cutter edge cuts coarse and short chips and a portion of said at least one cutting edge disposed adjacent said nose cuts finishing chips.
Dependencies are inferred from the claim text.