Cutting insert for a milling cutter
AssigneeTaeguTec India P Ltd.
InventorKedar Suresh Bhagath
Life of this patent
Estimating the term…
Abstract
A fully indexable square cutting insert has four side surfaces connecting to two end surfaces. At the intersection of each side surface with an end surface is a primary cutting edge which extends from an insert corner and along a first side surface, in a downward direction towards a median plane. A wiper extends from the same insert corner and along an adjacent side surface, in an upward direction away from the median plane, to rise above an abutment surface of an associated end surface. The geometry of the cutting insert and of the insert pocket in which the insert is seated are such that the primary cutting edge has a positive axial angle (helix), while the insert has an overall negative axial angle for providing axial clearance and an overall negative radial angle for providing radial clearance.
Claims20
A double-ended indexable cutting insert comprising:
- first and second substantially square end surfaces facing opposite directions, each end surface having an associated abutment surface and four associated insert corners;
- four side surfaces connecting the first and second end surfaces to form a total of eight edges, each edge comprising a primary cutting edge, a wiper and a transitive edge connecting the primary cutting edge to the wiper, at least the primary cutting edge and the wiper occupying a common plane in an end view of the cutting insert;
- a median plane located mid-way between the first and second end surfaces and passing through the four side surfaces;
- wherein:
- each insert corner has associated therewith:
- an associated primary cutting edge extending from said each insert corner in a downward direction towards the median plane;
- and
- an associated wiper extending from said each insert corner in an upward direction away from the median plane, said wiper rising above an associated abutment surface with respect to the median plane.
A milling cutter having an axis of rotation R and comprising:
- a cutter body having a front face connecting to a peripheral surface and at least one insert pocket opening out to both the front face and the peripheral surface;
- and
- a double-ended indexable cutting insert seated in the at least one insert pocket, the cutting insert comprising:
- first and second substantially square end surfaces facing opposite directions, each end surface having an associated abutment surface and four associated insert corners;
- four side surfaces connecting the first and second end surfaces to form a total of eight edges, each edge comprising a primary cutting edge, a wiper and a transitive edge connecting the primary cutting edge to the wiper, at least the primary cutting edge and the wiper occupying a common plane in an end view of the cutting insert;
- a median plane located mid-way between the first and second end surfaces and passing through the four side surfaces;
- wherein:
- each insert corner has associated therewith:
- an associated primary cutting edge extending from said each insert corner in a downward direction towards the median plane;
- and
- an associated wiper extending from said each insert corner in an upward direction away from the median plane, said wiper rising above an associated abutment surface with respect to the median plane.
Dependencies are inferred from the claim text.